Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

public: static System::String ^ Format(IFormatProvider ^ provider, System::String ^ format, System::Object ^ arg0, System::Object ^ arg1, System::Object ^ arg2);

public static string Format(IFormatProvider provider, string format, object arg0, object arg1, object arg2);

public static string Format(IFormatProvider? provider, string format, object? arg0, object? arg1, object? arg2);

static member Format : IFormatProvider * string * obj * obj * obj -> string

Public Shared Function Format (provider As IFormatProvider, format As String, arg0 As Object, arg1 As Object, arg2 As Object) As String

Parameters

Returns

A copy offormat in which the format items have been replaced by the string representations ofarg0,arg1, andarg2.

Exceptions

Remarks

This method uses thecomposite formatting feature to convert three expressions to their string representations and to embed those representations in a string. In performing the conversion, the method uses culture-sensitive formatting or a custom formatter. The method converts eachObject argument to its string representation by calling itsToString(IFormatProvider) method or, if the object's corresponding format item includes a format string, by calling itsToString(String,IFormatProvider) method. If these methods don't exist, it calls the object's parameterlessToString method.

However, when calling theString.Format method, it's not necessary to focus on the particular overload that you want to call. Instead, you can call the method with an object that provides culture-sensitive or custom formatting and acomposite format string that includes one or more format items. You assign each format item a numeric index; the first index starts at 0. In addition to the initial string, your method call should have as many additional arguments as it has index values. For example, a string whose format items have indexes of 0 and 1 should have 2 arguments; one with indexes 0 through 5 should have 6 arguments. The language compiler will then resolve your method call to a particular overload of theString.Format method.

For more detailed documentation on using theString.Format method, seeGet started with the String.Format method andWhich method do I call?.

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

public: static System::String ^ Format(IFormatProvider ^ provider, System::String ^ format, System::Object ^ arg0, System::Object ^ arg1);

public static string Format(IFormatProvider provider, string format, object arg0, object arg1);

public static string Format(IFormatProvider? provider, string format, object? arg0, object? arg1);

static member Format : IFormatProvider * string * obj * obj -> string

Public Shared Function Format (provider As IFormatProvider, format As String, arg0 As Object, arg1 As Object) As String

Parameters

Returns

A copy offormat in which format items are replaced by the string representations ofarg0 andarg1.

Exceptions

Remarks

This method uses thecomposite formatting feature to convert two expressions to their string representations and to embed those representations in a string. In performing the conversion, the method uses culture-sensitive formatting or a custom formatter. The method converts eachObject argument to its string representation by calling itsToString(IFormatProvider) method or, if the object's corresponding format item includes a format string, by calling itsToString(String,IFormatProvider) method. If these methods don't exist, it calls the object's parameterlessToString method.

However, when calling theString.Format method, it's not necessary to focus on the particular overload that you want to call. Instead, you can call the method with an object that provides culture-sensitive or custom formatting and acomposite format string that includes one or more format items. You assign each format item a numeric index; the first index starts at 0. In addition to the initial string, your method call should have as many additional arguments as it has index values. For example, a string whose format items have indexes of 0 and 1 should have 2 arguments; one with indexes 0 through 5 should have 6 arguments. The language compiler will then resolve your method call to a particular overload of theString.Format method.

For more detailed documentation on using theString.Format method, seeGet started with the String.Format method andWhich method do I call?.

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

public: static System::String ^ Format(System::String ^ format, System::Object ^ arg0, System::Object ^ arg1);

public static string Format(string format, object arg0, object arg1);

public static string Format(string format, object? arg0, object? arg1);

static member Format : string * obj * obj -> string

Public Shared Function Format (format As String, arg0 As Object, arg1 As Object) As String

Parameters

Returns

A copy offormat in which format items are replaced by the string representations ofarg0 andarg1.

Exceptions

Remarks

This method uses thecomposite formatting feature to convert the value of two expressions to their string representations and to embed those representations in a string.

However, when calling theString.Format method, it's not necessary to focus on the particular overload that you want to call. Instead, you can call the method with acomposite format string that includes one or more format items. You assign each format item a numeric index; the first index starts at 0. In addition to the initial string, your method call should have as many additional arguments as it has index values. For example, a string whose format items have indexes of 0 and 1 should have 2 arguments; one with indexes 0 through 5 should have 6 arguments. The language compiler will then resolve your method call to a particular overload of theString.Format method.

For more detailed documentation on using theString.Format method, seeGet started with the String.Format method andWhich method do I call?.

Example: Format two arguments

This example uses theFormat(String, Object, Object) method to display time and temperature data stored in a genericDictionary<TKey,TValue> object. Note that the format string has three format items, although there are only two objects to format. This is because the first object in the list (a date and time value) is used by two format items: The first format item displays the time, and the second displays the date.

Dictionary<DateTime, Double> temperatureInfo = new Dictionary<DateTime, Double>(); temperatureInfo.Add(new DateTime(2010, 6, 1, 14, 0, 0), 87.46);temperatureInfo.Add(new DateTime(2010, 12, 1, 10, 0, 0), 36.81);Console.WriteLine("Temperature Information:\n");string output;   foreach (var item in temperatureInfo){   output = String.Format("Temperature at {0,8:t} on {0,9:d}: {1,5:N1}°F",                           item.Key, item.Value);   Console.WriteLine(output);}// The example displays output like the following://       Temperature Information://       //       Temperature at  2:00 PM on  6/1/2010:  87.5°F//       Temperature at 10:00 AM on 12/1/2010:  36.8°F

open Systemopen System.Collections.Genericlet temperatureInfo = Dictionary<DateTime, float>() temperatureInfo.Add(DateTime(2010, 6, 1, 14, 0, 0), 87.46)temperatureInfo.Add(DateTime(2010, 12, 1, 10, 0, 0), 36.81)printfn $"Temperature Information:\n"for item in temperatureInfo do   String.Format("Temperature at {0,8:t} on {0,9:d}: {1,5:N1}°F", item.Key, item.Value)   |> printfn "%s"// The example displays output like the following://       Temperature Information://       //       Temperature at  2:00 PM on  6/1/2010:  87.5°F//       Temperature at 10:00 AM on 12/1/2010:  36.8°F

Imports System.Collections.GenericModule Example   Public Sub Main()      Dim temperatureInfo As New Dictionary(Of Date, Double)       temperatureInfo.Add(#6/1/2010 2:00PM#, 87.46)      temperatureInfo.Add(#12/1/2010 10:00AM#, 36.81)            Console.WriteLine("Temperature Information:")      Console.WriteLine()      Dim output As String         For Each item In temperatureInfo         output = String.Format("Temperature at {0,8:t} on {0,9:d}: {1,5:N1}°F", _                                item.Key, item.Value)         Console.WriteLine(output)      Next   End SubEnd Module' The example displays the following output:'       Temperature Information:'       '       Temperature at  2:00 PM on  6/1/2010:  87.5°F'       Temperature at 10:00 AM on 12/1/2010:  36.8°F

See also

• Formatting Types in .NET
• Composite Formatting
• Standard Date and Time Format Strings
• Custom Date and Time Format Strings
• Standard Numeric Format Strings
• Custom Numeric Format Strings
• Standard TimeSpan Format Strings
• Custom TimeSpan Format Strings
• Enumeration Format Strings

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

public: static System::String ^ Format(IFormatProvider ^ provider, System::Text::CompositeFormat ^ format, ReadOnlySpan<System::Object ^> args);

public static string Format(IFormatProvider? provider, System.Text.CompositeFormat format, scoped ReadOnlySpan<object?> args);

public static string Format(IFormatProvider? provider, System.Text.CompositeFormat format, ReadOnlySpan<object?> args);

static member Format : IFormatProvider * System.Text.CompositeFormat * ReadOnlySpan<obj> -> string

Public Shared Function Format (provider As IFormatProvider, format As CompositeFormat, args As ReadOnlySpan(Of Object)) As String

Parameters

Returns

The formatted string.

Exceptions

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

public: static System::String ^ Format(IFormatProvider ^ provider, System::Text::CompositeFormat ^ format, ... cli::array <System::Object ^> ^ args);

public static string Format(IFormatProvider? provider, System.Text.CompositeFormat format, params object?[] args);

static member Format : IFormatProvider * System.Text.CompositeFormat * obj[] -> string

Public Shared Function Format (provider As IFormatProvider, format As CompositeFormat, ParamArray args As Object()) As String

Parameters

Returns

The formatted string.

Exceptions

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

public: static System::String ^ Format(System::String ^ format, System::Object ^ arg0, System::Object ^ arg1, System::Object ^ arg2);

public static string Format(string format, object arg0, object arg1, object arg2);

public static string Format(string format, object? arg0, object? arg1, object? arg2);

static member Format : string * obj * obj * obj -> string

Public Shared Function Format (format As String, arg0 As Object, arg1 As Object, arg2 As Object) As String

Parameters

Returns

A copy offormat in which the format items have been replaced by the string representations ofarg0,arg1, andarg2.

Exceptions

Remarks

This method uses thecomposite formatting feature to convert the value of three expressions to their string representations and to embed those representations in a string.

However, when calling theString.Format method, it's not necessary to focus on the particular overload that you want to call. Instead, you can call the method with acomposite format string that includes one or more format items. You assign each format item a numeric index; the first index starts at 0. In addition to the initial string, your method call should have as many additional arguments as it has index values. For example, a string whose format items have indexes of 0 and 1 should have 2 arguments; one with indexes 0 through 5 should have 6 arguments. The language compiler will then resolve your method call to a particular overload of theString.Format method.

For more detailed documentation on using theString.Format method, seeGet started with the String.Format method andWhich method do I call?.

Example: Format three arguments

This example uses theFormat(String, Object, Object, Object) method to create a string that illustrates the result of a BooleanAnd operation with two integer values. Note that the format string includes six format items, but the method has only three items in its parameter list, because each item is formatted in two different ways.

string formatString = "    {0,10} ({0,8:X8})\n" +                       "And {1,10} ({1,8:X8})\n" +                       "  = {2,10} ({2,8:X8})";int value1 = 16932;int value2 = 15421;string result = String.Format(formatString,                               value1, value2, value1 & value2);Console.WriteLine(result);// The example displays the following output://                16932 (00004224)//       And      15421 (00003C3D)//         =         36 (00000024)

open Systemlet formatString =     "    {0,10} ({0,8:X8})\nAnd {1,10} ({1,8:X8})\n  = {2,10} ({2,8:X8})"let value1 = 16932let value2 = 15421String.Format(formatString, value1, value2, value1 &&& value2)|> printfn "%s"// The example displays the following output://                16932 (00004224)//       And      15421 (00003C3D)//         =         36 (00000024)

Public Module Example   Public Sub Main()      Dim formatString As String = "    {0,10} ({0,8:X8})" + vbCrLf +  _                                   "And {1,10} ({1,8:X8})" + vbCrLf + _                                   "  = {2,10} ({2,8:X8})"      Dim value1 As Integer = 16932      Dim value2 As Integer = 15421      Dim result As String = String.Format(formatString, _                                           value1, value2, value1 And value2)      Console.WriteLine(result)                             End SubEnd Module' The example displays the following output:'                16932 (00004224)'       And      15421 (00003C3D)'         =         36 (00000024)

See also

• Formatting Types in .NET
• Composite Formatting

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

public: static System::String ^ Format(IFormatProvider ^ provider, System::String ^ format, ... cli::array <System::Object ^> ^ args);

public static string Format(IFormatProvider provider, string format, params object[] args);

public static string Format(IFormatProvider? provider, string format, params object?[] args);

static member Format : IFormatProvider * string * obj[] -> string

Public Shared Function Format (provider As IFormatProvider, format As String, ParamArray args As Object()) As String

Parameters

Returns

A copy offormat in which the format items have been replaced by the string representation of the corresponding objects inargs.

Exceptions

Remarks

This method uses thecomposite formatting feature to convert four or more expressions to their string representations and to embed those representations in a string. In performing the conversion, the method uses culture-sensitive formatting or a custom formatter. The method converts eachObject argument to its string representation by calling itsToString(IFormatProvider) method or, if the object's corresponding format item includes a format string, by calling itsToString(String,IFormatProvider) method. If these methods don't exist, it calls the object's parameterlessToString method.

However, when calling theString.Format method, it's not necessary to focus on the particular overload that you want to call. Instead, you can call the method with an object that provides culture-sensitive or custom formatting and acomposite format string that includes one or more format items. You assign each format item a numeric index; the first index starts at 0. In addition to the initial string, your method call should have as many additional arguments as it has index values. For example, a string whose format items have indexes of 0 and 1 should have 2 arguments; one with indexes 0 through 5 should have 6 arguments. The language compiler will then resolve your method call to a particular overload of theString.Format method.

For more detailed documentation on using theString.Format method, seeGet started with the String.Format method andWhich method do I call?.

This example uses theFormat(IFormatProvider, String, Object[]) method to display the string representation of some date and time values and numeric values by using several different cultures.

string[] cultureNames = { "en-US", "fr-FR", "de-DE", "es-ES" };DateTime dateToDisplay = new DateTime(2009, 9, 1, 18, 32, 0);double value = 9164.32;Console.WriteLine("Culture     Date                                Value\n");foreach (string cultureName in cultureNames){   System.Globalization.CultureInfo culture = new System.Globalization.CultureInfo(cultureName);   string output = String.Format(culture, "{0,-11} {1,-35:D} {2:N}",                                  culture.Name, dateToDisplay, value);   Console.WriteLine(output);}    // The example displays the following output://    Culture     Date                                Value//    //    en-US       Tuesday, September 01, 2009         9,164.32//    fr-FR       mardi 1 septembre 2009              9 164,32//    de-DE       Dienstag, 1. September 2009         9.164,32//    es-ES       martes, 01 de septiembre de 2009    9.164,32

open Systemopen System.Globalizationlet cultureNames = [| "en-US"; "fr-FR"; "de-DE"; "es-ES" |]let dateToDisplay = DateTime(2009, 9, 1, 18, 32, 0)let value = 9164.32printfn "Culture     Date                                Value\n"for cultureName in cultureNames do    let culture = CultureInfo cultureName    String.Format(culture, "{0,-11} {1,-35:D} {2:N}", culture.Name, dateToDisplay, value)    |> printfn "%s"// The example displays the following output://    Culture     Date                                Value//    //    en-US       Tuesday, September 01, 2009         9,164.32//    fr-FR       mardi 1 septembre 2009              9 164,32//    de-DE       Dienstag, 1. September 2009         9.164,32//    es-ES       martes, 01 de septiembre de 2009    9.164,32

Imports System.GlobalizationModule Example   Public Sub Main()      Dim cultureNames() As String = { "en-US", "fr-FR", "de-DE", "es-ES" }            Dim dateToDisplay As Date = #9/1/2009 6:32PM#      Dim value As Double = 9164.32      Console.WriteLine("Culture     Date                                Value")      Console.WriteLine()            For Each cultureName As String In cultureNames         Dim culture As New CultureInfo(cultureName)         Dim output As String = String.Format(culture, "{0,-11} {1,-35:D} {2:N}", _                                              culture.Name, dateToDisplay, value)         Console.WriteLine(output)      Next       End SubEnd Module' The example displays the following output:'       Culture     Date                                Value'       '       en-US       Tuesday, September 01, 2009         9,164.32'       fr-FR       mardi 1 septembre 2009              9 164,32'       de-DE       Dienstag, 1. September 2009         9.164,32'       es-ES       martes, 01 de septiembre de 2009    9.164,32

See also

• DateTimeFormatInfo
• ICustomFormatter
• IFormatProvider
• NumberFormatInfo
• Formatting Types in .NET
• Composite Formatting
• Standard Date and Time Format Strings
• Custom Date and Time Format Strings
• Standard Numeric Format Strings
• Custom Numeric Format Strings
• Standard TimeSpan Format Strings
• Custom TimeSpan Format Strings
• Enumeration Format Strings

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

public: static System::String ^ Format(IFormatProvider ^ provider, System::String ^ format, System::Object ^ arg0);

public static string Format(IFormatProvider provider, string format, object arg0);

public static string Format(IFormatProvider? provider, string format, object? arg0);

static member Format : IFormatProvider * string * obj -> string

Public Shared Function Format (provider As IFormatProvider, format As String, arg0 As Object) As String

Parameters

Returns

A copy offormat in which the format item or items have been replaced by the string representation ofarg0.

Exceptions

Remarks

This method uses thecomposite formatting feature to convert the value of an expression to its string representation and to embed that representation in a string. In performing the conversion, the method uses culture-sensitive formatting or a custom formatter. The method convertsarg0 to its string representation by calling itsToString(IFormatProvider) method or, if the object's corresponding format item includes a format string, by calling itsToString(String,IFormatProvider) method. If these methods don't exist, it calls the object's parameterlessToString method.

However, when calling theString.Format method, it's not necessary to focus on the particular overload that you want to call. Instead, you can call the method with an object that provides culture-sensitive or custom formatting and acomposite format string that includes one or more format items. You assign each format item a numeric index; the first index starts at 0. In addition to the initial string, your method call should have as many additional arguments as it has index values. For example, a string whose format items have indexes of 0 and 1 should have 2 arguments; one with indexes 0 through 5 should have 6 arguments. The language compiler will then resolve your method call to a particular overload of theString.Format method.

For more detailed documentation on using theString.Format method, seeGet started with the String.Format method andWhich method do I call?.

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

public: static System::String ^ Format(System::String ^ format, ReadOnlySpan<System::Object ^> args);

public static string Format(string format, scoped ReadOnlySpan<object?> args);

static member Format : string * ReadOnlySpan<obj> -> string

Public Shared Function Format (format As String, args As ReadOnlySpan(Of Object)) As String

Parameters

Returns

A copy offormat in which the format items have been replaced by the string representation of the corresponding objects inargs.

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

public: static System::String ^ Format(System::String ^ format, ... cli::array <System::Object ^> ^ args);

public static string Format(string format, params object[] args);

public static string Format(string format, params object?[] args);

static member Format : string * obj[] -> string

Public Shared Function Format (format As String, ParamArray args As Object()) As String

Parameters

Returns

A copy offormat in which the format items have been replaced by the string representation of the corresponding objects inargs.

Exceptions

Remarks

This method uses thecomposite formatting feature to convert the value of four or more expressions to their string representations and to embed those representations in a string. Since theargs parameter is marked with theSystem.ParamArrayAttribute attribute, you can pass the objects to the method as individual arguments or as anObject array.

However, when calling theString.Format method, it's not necessary to focus on the particular overload that you want to call. Instead, you can call the method with acomposite format string that includes one or more format items. You assign each format item a numeric index; the first index starts at 0. In addition to the initial string, your method call should have as many additional arguments as it has index values. For example, a string whose format items have indexes of 0 and 1 should have 2 arguments; one with indexes 0 through 5 should have 6 arguments. The language compiler will then resolve your method call to a particular overload of theString.Format method.

For more detailed documentation on using theString.Format method, seeGet started with the String.Format method andWhich method do I call?.

Example: Format more than three arguments

This example creates a string that contains data on the high and low temperature on a particular date. The composite format string has five format items in the C# example and six in the Visual Basic example. Two of the format items define the width of their corresponding value's string representation, and the first format item also includes a standard date and time format string.

DateTime date1 = new DateTime(2009, 7, 1);TimeSpan hiTime = new TimeSpan(14, 17, 32);decimal hiTemp = 62.1m; TimeSpan loTime = new TimeSpan(3, 16, 10);decimal loTemp = 54.8m; string result1 = String.Format("Temperature on {0:d}:\n{1,11}: {2} degrees (hi)\n{3,11}: {4} degrees (lo)",                                date1, hiTime, hiTemp, loTime, loTemp);Console.WriteLine(result1);Console.WriteLine();     string result2 = String.Format("Temperature on {0:d}:\n{1,11}: {2} degrees (hi)\n{3,11}: {4} degrees (lo)",                                new object[] { date1, hiTime, hiTemp, loTime, loTemp });Console.WriteLine(result2);// The example displays output like the following://       Temperature on 7/1/2009://          14:17:32: 62.1 degrees (hi)//          03:16:10: 54.8 degrees (lo)//       Temperature on 7/1/2009://          14:17:32: 62.1 degrees (hi)//          03:16:10: 54.8 degrees (lo)

let date1 = DateTime(2009, 7, 1)let hiTime = TimeSpan(14, 17, 32)let hiTemp = 62.1m let loTime = TimeSpan(3, 16, 10)let loTemp = 54.8m String.Format("Temperature on {0:d}:\n{1,11}: {2} degrees (hi)\n{3,11}: {4} degrees (lo)", date1, hiTime, hiTemp, loTime, loTemp)|> printfn "%s\n"      String.Format("Temperature on {0:d}:\n{1,11}: {2} degrees (hi)\n{3,11}: {4} degrees (lo)", [| date1 :> obj; hiTime; hiTemp; loTime; loTemp |])|> printfn "%s"// The example displays output like the following://       Temperature on 7/1/2009://          14:17:32: 62.1 degrees (hi)//          03:16:10: 54.8 degrees (lo)//       Temperature on 7/1/2009://          14:17:32: 62.1 degrees (hi)//          03:16:10: 54.8 degrees (lo)

Module Example   Public Sub Main()      Dim date1 As Date = #7/1/2009#      Dim hiTime As New TimeSpan(14, 17, 32)      Dim hiTemp As Decimal = 62.1d       Dim loTime As New TimeSpan(3, 16, 10)      Dim loTemp As Decimal = 54.8d       Dim result1 As String = String.Format("Temperature on {0:d}:{5}{1,11}: {2} degrees (hi){5}{3,11}: {4} degrees (lo)", _                                           date1, hiTime, hiTemp, loTime, loTemp, vbCrLf)      Console.WriteLine(result1)      Console.WriteLine()                 Dim result2 As String = String.Format("Temperature on {0:d}:{5}{1,11}: {2} degrees (hi){5}{3,11}: {4} degrees (lo)", _                                            New Object() { date1, hiTime, hiTemp, loTime, loTemp, vbCrLf })      Console.WriteLine(result2)                                               End SubEnd Module' The example displays the following output:'       Temperature on 7/1/2009:'          14:17:32: 62.1 degrees (hi)'          03:16:10: 54.8 degrees (lo)''       Temperature on 7/1/2009:'          14:17:32: 62.1 degrees (hi)'          03:16:10: 54.8 degrees (lo)

You can also pass the objects to be formatted as an array rather than as an argument list.

using System;public class CityInfo{   public CityInfo(String name, int population, Decimal area, int year)   {      this.Name = name;      this.Population = population;      this.Area = area;      this.Year = year;   }      public readonly String Name;    public readonly int Population;   public readonly Decimal Area;   public readonly int Year;}public class Example{   public static void Main()   {      CityInfo nyc2010 = new CityInfo("New York", 8175133, 302.64m, 2010);      ShowPopulationData(nyc2010);      CityInfo sea2010 = new CityInfo("Seattle", 608660, 83.94m, 2010);            ShowPopulationData(sea2010);    }   private static void ShowPopulationData(CityInfo city)   {      object[] args = { city.Name, city.Year, city.Population, city.Area };      String result = String.Format("{0} in {1}: Population {2:N0}, Area {3:N1} sq. feet",                                     args);      Console.WriteLine(result);    }}// The example displays the following output://       New York in 2010: Population 8,175,133, Area 302.6 sq. feet//       Seattle in 2010: Population 608,660, Area 83.9 sq. feet

open Systemtype CityInfo =  { Name: string    Population: int    Area: Decimal    Year: int }let showPopulationData city =    let args: obj[] = [| city.Name; city.Year; city.Population; city.Area |]    String.Format("{0} in {1}: Population {2:N0}, Area {3:N1} sq. feet", args)    |> printfn "%s"{ Name = "New York"; Population = 8175133; Area = 302.64m; Year = 2010 }|> showPopulationData { Name = "Seattle"; Population = 608660; Area = 83.94m; Year = 2010 }      |> showPopulationData // The example displays the following output://       New York in 2010: Population 8,175,133, Area 302.6 sq. feet//       Seattle in 2010: Population 608,660, Area 83.9 sq. feet

Public Class CityInfo   Public Sub New(name As String, population As Integer, area As Decimal, year As Integer)      Me.Name = name      Me.Population = population      Me.Area = area      Me.Year = year   End Sub      Public ReadOnly Name As String   Public ReadOnly Population As Integer   Public ReadOnly Area As Decimal   Public ReadOnly Year As IntegerEnd ClassModule Example   Public Sub Main()      Dim nyc2010 As New CityInfo("New York", 8175133, 302.64d, 2010)      ShowPopulationData(nyc2010)      Dim sea2010 As New CityInfo("Seattle", 608660, 83.94d, 2010)            ShowPopulationData(sea2010)    End Sub      Private Sub ShowPopulationData(city As CityInfo)      Dim args() As Object = { city.Name, city.Year, city.Population, city.Area }      Dim result = String.Format("{0} in {1}: Population {2:N0}, Area {3:N1} sq. feet", args)      Console.WriteLine(result)    End SubEnd Module' The example displays the following output:'       New York in 2010: Population 8,175,133, Area 302.6 sq. feet'       Seattle in 2010: Population 608,660, Area 83.9 sq. feet

See also

• Formatting Types in .NET
• Composite Formatting
• Standard Date and Time Format Strings
• Custom Date and Time Format Strings
• Standard Numeric Format Strings
• Custom Numeric Format Strings
• Standard TimeSpan Format Strings
• Custom TimeSpan Format Strings
• Enumeration Format Strings

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

public: static System::String ^ Format(System::String ^ format, System::Object ^ arg0);

public static string Format(string format, object arg0);

public static string Format(string format, object? arg0);

static member Format : string * obj -> string

Public Shared Function Format (format As String, arg0 As Object) As String

Parameters

Returns

A copy offormat in which any format items are replaced by the string representation ofarg0.

Exceptions

Remarks

This method uses thecomposite formatting feature to convert the value of an expression to its string representation and to embed that representation in a string.

However, when calling theString.Format method, it's not necessary to focus on the particular overload that you want to call. Instead, you can call the method with acomposite format string that includes one or more format items. You assign each format item a numeric index; the first index starts at 0. In addition to the initial string, your method call should have as many additional arguments as it has index values. For example, a string whose format items have indexes of 0 and 1 should have 2 arguments; one with indexes 0 through 5 should have 6 arguments. The language compiler will then resolve your method call to a particular overload of theString.Format method.

For more detailed documentation on using theString.Format method, seeGet started with the String.Format method andWhich method do I call?.

Example: Formatting a single argument

The following example uses theFormat(String, Object) method to embed an individual's age in the middle of a string.

DateTime birthdate = new DateTime(1993, 7, 28);DateTime[] dates = { new DateTime(1993, 8, 16),                      new DateTime(1994, 7, 28),                      new DateTime(2000, 10, 16),                      new DateTime(2003, 7, 27),                      new DateTime(2007, 5, 27) };foreach (DateTime dateValue in dates){   TimeSpan interval = dateValue - birthdate;   // Get the approximate number of years, without accounting for leap years.   int years = ((int) interval.TotalDays) / 365;   // See if adding the number of years exceeds dateValue.   string output;   if (birthdate.AddYears(years) <= dateValue) {      output = String.Format("You are now {0} years old.", years);      Console.WriteLine(output);   }      else {      output = String.Format("You are now {0} years old.", years - 1);      Console.WriteLine(output);   }      }// The example displays the following output://       You are now 0 years old.//       You are now 1 years old.//       You are now 7 years old.//       You are now 9 years old.//       You are now 13 years old.

let birthdate = DateTime(1993, 7, 28)let dates =     [ DateTime(1993, 8, 16)       DateTime(1994, 7, 28)      DateTime(2000, 10, 16)      DateTime(2003, 7, 27)      DateTime(2007, 5, 27) ]for dateValue in dates do    let interval = dateValue - birthdate    // Get the approximate number of years, without accounting for leap years.    let years = (int interval.TotalDays) / 365    // See if adding the number of years exceeds dateValue.    if birthdate.AddYears years <= dateValue then        String.Format("You are now {0} years old.", years)    else        String.Format("You are now {0} years old.", years - 1)    |> printfn "%s"// The example displays the following output://       You are now 0 years old.//       You are now 1 years old.//       You are now 7 years old.//       You are now 9 years old.//       You are now 13 years old.

Module Example   Public Sub Main()      Dim birthdate As Date = #7/28/1993#      Dim dates() As Date = { #9/16/1993#, #7/28/1994#, #10/16/2000#, _                              #7/27/2003#, #5/27/2007# }      For Each dateValue As Date In dates         Dim interval As TimeSpan = dateValue - birthdate         ' Get the approximate number of years, without accounting for leap years.         Dim years As Integer = CInt(interval.TotalDays) \ 365         ' See if adding the number of years exceeds dateValue.         Dim output As String         If birthdate.AddYears(years) <= dateValue Then            output = String.Format("You are now {0} years old.", years)            Console.WriteLine(output)         Else            output = String.Format("You are now {0} years old.", years - 1)            Console.WriteLine(output)            End If      Next   End SubEnd Module' The example displays the following output:'       You are now 0 years old.'       You are now 1 years old.'       You are now 7 years old.'       You are now 9 years old.'       You are now 13 years old.

See also

• Formatting Types in .NET
• Composite Formatting
• Standard Date and Time Format Strings
• Custom Date and Time Format Strings
• Standard Numeric Format Strings
• Custom Numeric Format Strings
• Standard TimeSpan Format Strings
• Custom TimeSpan Format Strings
• Enumeration Format Strings

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

public: static System::String ^ Format(IFormatProvider ^ provider, System::String ^ format, ReadOnlySpan<System::Object ^> args);

public static string Format(IFormatProvider? provider, string format, scoped ReadOnlySpan<object?> args);

static member Format : IFormatProvider * string * ReadOnlySpan<obj> -> string

Public Shared Function Format (provider As IFormatProvider, format As String, args As ReadOnlySpan(Of Object)) As String

Parameters

Returns

A copy offormat in which the format items have been replaced by the string representation of the corresponding objects inargs.

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

public:generic <typename TArg0, typename TArg1, typename TArg2> static System::String ^ Format(IFormatProvider ^ provider, System::Text::CompositeFormat ^ format, TArg0 arg0, TArg1 arg1, TArg2 arg2);

public static string Format<TArg0,TArg1,TArg2>(IFormatProvider? provider, System.Text.CompositeFormat format, TArg0 arg0, TArg1 arg1, TArg2 arg2);

static member Format : IFormatProvider * System.Text.CompositeFormat * 'TArg0 * 'TArg1 * 'TArg2 -> string

Public Shared Function Format(Of TArg0, TArg1, TArg2) (provider As IFormatProvider, format As CompositeFormat, arg0 As TArg0, arg1 As TArg1, arg2 As TArg2) As String

Type Parameters

Parameters

Returns

The formatted string.

Exceptions

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

public:generic <typename TArg0, typename TArg1> static System::String ^ Format(IFormatProvider ^ provider, System::Text::CompositeFormat ^ format, TArg0 arg0, TArg1 arg1);

public static string Format<TArg0,TArg1>(IFormatProvider? provider, System.Text.CompositeFormat format, TArg0 arg0, TArg1 arg1);

static member Format : IFormatProvider * System.Text.CompositeFormat * 'TArg0 * 'TArg1 -> string

Public Shared Function Format(Of TArg0, TArg1) (provider As IFormatProvider, format As CompositeFormat, arg0 As TArg0, arg1 As TArg1) As String

Type Parameters

Parameters

Returns

The formatted string.

Exceptions

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

Source:

String.Manipulation.cs

public:generic <typename TArg0> static System::String ^ Format(IFormatProvider ^ provider, System::Text::CompositeFormat ^ format, TArg0 arg0);

public static string Format<TArg0>(IFormatProvider? provider, System.Text.CompositeFormat format, TArg0 arg0);

static member Format : IFormatProvider * System.Text.CompositeFormat * 'TArg0 -> string

Public Shared Function Format(Of TArg0) (provider As IFormatProvider, format As CompositeFormat, arg0 As TArg0) As String

Type Parameters

Parameters

Returns

The formatted string.

Exceptions