CodeConditionStatement 类

定义

public ref class CodeConditionStatement : System::CodeDom::CodeStatement

[System.Runtime.InteropServices.ComVisible(true)]
[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDispatch)]
[System.Serializable]
public class CodeConditionStatement : System.CodeDom.CodeStatement

type CodeConditionStatement = class
    inherit CodeStatement

Public Class CodeConditionStatement
Inherits CodeStatement

继承

Object

CodeObject

CodeStatement

CodeConditionStatement

属性

ComVisibleAttribute ClassInterfaceAttribute SerializableAttribute

示例

此示例演示CodeConditionStatement如何使用来if表示语句和else块。This example demonstrates using a CodeConditionStatement to represent an if statement with an else block.

// Create a CodeConditionStatement that tests a boolean value named boolean.
array<CodeStatement^>^temp0 = {gcnew CodeCommentStatement( "If condition is true, execute these statements." )};
array<CodeStatement^>^temp1 = {gcnew CodeCommentStatement( "Else block. If condition is false, execute these statements." )};

// The statements to execute if the condition evalues to false.
CodeConditionStatement^ conditionalStatement = gcnew CodeConditionStatement( gcnew CodeVariableReferenceExpression( "boolean" ),temp0,temp1 );

// A C# code generator produces the following source code for the preceeding example code:
// if (boolean) 
// {
//     // If condition is true, execute these statements.
// }
// else {
//     // Else block. If condition is false, execute these statements.
// }        

        // Create a CodeConditionStatement that tests a boolean value named boolean.
        CodeConditionStatement conditionalStatement = new CodeConditionStatement(
            // The condition to test.
            new CodeVariableReferenceExpression("boolean"),
            // The statements to execute if the condition evaluates to true.
            new CodeStatement[] { new CodeCommentStatement("If condition is true, execute these statements.") },
            // The statements to execute if the condition evalues to false.
            new CodeStatement[] { new CodeCommentStatement("Else block. If condition is false, execute these statements.") } );

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

        // if (boolean) 
        // {
            //     // If condition is true, execute these statements.
        // }
        // else {
        //     // Else block. If condition is false, execute these statements.
            // }        

' Create a CodeConditionStatement that tests a boolean value named boolean.
 Dim conditionalStatement As New CodeConditionStatement( _
      New CodeVariableReferenceExpression("boolean"), _
      New CodeStatement() {New CodeCommentStatement("If condition is true, execute these statements.")}, _
      New CodeStatement() {New CodeCommentStatement("Else block. If condition is false, execute these statements.")})

' A Visual Basic code generator produces the following source code for the preceeding example code:

' If [boolean] Then
'     'If condition is true, execute these statements.
' Else
'     'Else block. If condition is false, execute these statements.

注解

CodeConditionStatement可用于表示包含条件表达式的代码、条件表达式计算结果true为时要执行的语句的集合, 以及条件表达式计算结果时要执行的语句的可选集合。到false。CodeConditionStatement can be used to represent code that consists of a conditional expression, a collection of statements to execute if the conditional expression evaluates to true, and an optional collection of statements to execute if the conditional expression evaluates to false. 在许多语言中if以语句的形式生成。 CodeConditionStatementA CodeConditionStatement is generated in many languages as an if statement.

Condition属性指示要测试的表达式。The Condition property indicates the expression to test. 如果TrueStatements要测试的表达式的计算结果为true, 则属性包含要执行的语句。The TrueStatements property contains the statements to execute if the expression to test evaluates to true. 如果FalseStatements要测试的表达式的计算结果为false, 则属性包含要执行的语句。The FalseStatements property contains the statements to execute if the expression to test evaluates to false.

构造函数

属性

方法

适用于