CodeIterationStatement Class

Represents a for statement, or a loop through a block of statements, using a test expression as a condition for continuing to loop.

Namespace:  System.CodeDom
Assembly:  System (in System.dll)

public class CodeIterationStatement : CodeStatement

A CodeIterationStatement can represent a for loop or while loop.

The InitStatement property specifies the statement to execute before the first loop iteration. The TestExpression property specifies the loop continuation expression, which must evaluate to true at the end of each loop iteration for another iteration to begin. The IncrementStatement property specifies the statement to execute at the end of each loop iteration. The Statements property specifies the collection of statements to execute within the loop.

This example demonstrates using a CodeIterationStatement to represent a for loop.

// Declares and initializes an integer variable named testInt.
CodeVariableDeclarationStatement testInt = new CodeVariableDeclarationStatement(typeof(int), "testInt", new CodePrimitiveExpression(0) );

// Creates a for loop that sets testInt to 0 and continues incrementing testInt by 1 each loop until testInt is not less than 10.
CodeIterationStatement forLoop = new CodeIterationStatement(
    // initStatement parameter for pre-loop initialization. 
    new CodeAssignStatement( new CodeVariableReferenceExpression("testInt"), new CodePrimitiveExpression(1) ),
    // testExpression parameter to test for continuation condition. 
    new CodeBinaryOperatorExpression( new CodeVariableReferenceExpression("testInt"), 
        CodeBinaryOperatorType.LessThan, new CodePrimitiveExpression(10) ),
    // incrementStatement parameter indicates statement to execute after each iteration. 
    new CodeAssignStatement( new CodeVariableReferenceExpression("testInt"), new CodeBinaryOperatorExpression( 
        new CodeVariableReferenceExpression("testInt"), CodeBinaryOperatorType.Add, new CodePrimitiveExpression(1) )),
    // statements parameter contains the statements to execute during each interation of the loop. 
    // Each loop iteration the value of the integer is output using the Console.WriteLine method. 
    new CodeStatement[] { new CodeExpressionStatement( new CodeMethodInvokeExpression( new CodeMethodReferenceExpression( 
        new CodeTypeReferenceExpression("Console"), "WriteLine" ), new CodeMethodInvokeExpression( 
        new CodeVariableReferenceExpression("testInt"), "ToString" ) ) ) } );

// A C# code generator produces the following source code for the preceeding example code: 

//     int testInt = 0; 
//     for (testInt = 1; (testInt < 10); testInt = (testInt + 1)) { 
//        Console.WriteLine(testInt.ToString());


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
Was this page helpful?
(1500 characters remaining)
Thank you for your feedback

Community Additions

© 2014 Microsoft