C#While Loop

Loops

Loops can execute a block of code as long as a specified condition is reached.

Loops are handy because they save time, reduce errors, and they make code more readable.

C# While Loop

Thewhile loop loops through a block of code as long as a specified condition isTrue:

while (condition) {  // code block to be executed}

In the example below, the code in the loop will run, over and over again, as long as a variable (i) is less than 5:

int i = 0;while (i < 5) {  Console.WriteLine(i);  i++;}

The Do/While Loop

Thedo/while loop is a variant of thewhile loop. This loop will execute the code block once, before checking if the condition is true, then it willrepeat the loop as long as the condition is true.

do {  // code block to be executed}while (condition);

The example below uses ado/while loop. The loop will always be executed at least once, even if the condition is false, because the code block is executed before the condition is tested:

int i = 0;
do {  Console.WriteLine(i);  i++;}while (i < 5);