The while loop

This executes the statement or code block until the condition evaluates to true. In this expression evaluates before the execution of code-block, if expression evaluates to false, loop terminates and no statement or code-block execute. Take a look at the following code snippet:

private static void WhileStatementExample() 
{ 
WriteLine("while example"); 
Write("Enter repeatitive length:"); 
int length = Convert.ToInt32(ReadLine()); 
int count = 0; 
while (count < length) 
    { 
       count++; 
       WriteLine(newstring('*', count)); 
    } 
}   

The preceding code executes the while statement repeatedly until expression evaluates to false.