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CodeLabeledStatement Class

Represents a labeled statement or a stand-alone label.

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

public ref class CodeLabeledStatement : public CodeStatement

The CodeLabeledStatement type exposes the following members.

Public methodCodeLabeledStatement()Initializes a new instance of the CodeLabeledStatement class.
Public methodCodeLabeledStatement(String)Initializes a new instance of the CodeLabeledStatement class using the specified label name.
Public methodCodeLabeledStatement(String, CodeStatement)Initializes a new instance of the CodeLabeledStatement class using the specified label name and statement.

Public propertyEndDirectivesGets a CodeDirectiveCollection object that contains end directives. (Inherited from CodeStatement.)
Public propertyLabelGets or sets the name of the label.
Public propertyLinePragmaGets or sets the line on which the code statement occurs. (Inherited from CodeStatement.)
Public propertyStartDirectivesGets a CodeDirectiveCollection object that contains start directives. (Inherited from CodeStatement.)
Public propertyStatementGets or sets the optional associated statement.
Public propertyUserDataGets the user-definable data for the current object. (Inherited from CodeObject.)

Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

CodeLabeledStatement represents a label and optionally, an associated statement. A label can be used to indicate the target of a CodeGotoStatement.

The Statement property is optional. To create only a label, leave the Statement property uninitialized.


Not all languages support goto statements and labels, so you should test wheter a code generator supports goto statements and labels by calling the Supports method with the GotoStatements flag.

The following example code demonstrates use of a CodeGotoStatement and a CodeLabeledStatement to redirect program flow.

// Declares a type to contain the example code.
CodeTypeDeclaration^ type1 = gcnew CodeTypeDeclaration( "Type1" );

// Declares an entry point method.
CodeEntryPointMethod^ entry1 = gcnew CodeEntryPointMethod;
type1->Members->Add( entry1 );

// Adds a goto statement to continue program flow at the "JumpToLabel" label.
CodeGotoStatement^ goto1 = gcnew CodeGotoStatement( "JumpToLabel" );
entry1->Statements->Add( goto1 );

// Invokes Console.WriteLine to print "Test Output", which is skipped by the goto statement.
array<CodeExpression^>^temp = {gcnew CodePrimitiveExpression( "Test Output." )};
CodeMethodInvokeExpression^ method1 = gcnew CodeMethodInvokeExpression( gcnew CodeTypeReferenceExpression( "System.Console" ),"WriteLine",temp );
entry1->Statements->Add( method1 );

// Declares a label named "JumpToLabel" associated with a method to output a test string using Console.WriteLine.
array<CodeExpression^>^temp2 = {gcnew CodePrimitiveExpression( "Output from labeled statement." )};
CodeMethodInvokeExpression^ method2 = gcnew CodeMethodInvokeExpression( gcnew CodeTypeReferenceExpression( "System.Console" ),"WriteLine",temp2 );
CodeLabeledStatement^ label1 = gcnew CodeLabeledStatement( "JumpToLabel",gcnew CodeExpressionStatement( method2 ) );
entry1->Statements->Add( label1 );

// A C# code generator produces the following source code for the preceeding example code: 
//    public class Type1  
//    { 
//        public static void Main()  
//        { 
//            goto JumpToLabel; 
//            System.Console.WriteLine("Test Output");
//            JumpToLabel: 
//            System.Console.WriteLine("Output from labeled statement.");
//        } 
//    }

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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