CodeLabeledStatement Class
Represents a labeled statement or a stand-alone label.
System.CodeDom::CodeObject
System.CodeDom::CodeStatement
System.CodeDom::CodeLabeledStatement
Assembly: System (in System.dll)
The CodeLabeledStatement type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | CodeLabeledStatement() | Initializes a new instance of the CodeLabeledStatement class. |
![]() | CodeLabeledStatement(String) | Initializes a new instance of the CodeLabeledStatement class using the specified label name. |
![]() | CodeLabeledStatement(String, CodeStatement) | Initializes a new instance of the CodeLabeledStatement class using the specified label name and statement. |
| Name | Description | |
|---|---|---|
![]() | EndDirectives | Gets a CodeDirectiveCollection object that contains end directives. (Inherited from CodeStatement.) |
![]() | Label | Gets or sets the name of the label. |
![]() | LinePragma | Gets or sets the line on which the code statement occurs. (Inherited from CodeStatement.) |
![]() | StartDirectives | Gets a CodeDirectiveCollection object that contains start directives. (Inherited from CodeStatement.) |
![]() | Statement | Gets or sets the optional associated statement. |
![]() | UserData | Gets the user-definable data for the current object. (Inherited from CodeObject.) |
| Name | Description | |
|---|---|---|
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | ToString | Returns 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.
Note |
|---|
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."); // } // }
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
