CodeCompileUnit Class
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CodeCompileUnit Class


Provides a container for a CodeDOM program graph.

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


public ref class CodeCompileUnit : CodeObject


Initializes a new instance of the CodeCompileUnit class.


Gets a collection of custom attributes for the generated assembly.


Gets a CodeDirectiveCollection object containing end directives.


Gets the collection of namespaces.


Gets the referenced assemblies.


Gets a CodeDirectiveCollection object containing start directives.


Gets the user-definable data for the current object.(Inherited from CodeObject.)


Determines whether the specified object is equal to the current object.(Inherited from Object.)


Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)


Serves as the default hash function. (Inherited from Object.)


Gets the Type of the current instance.(Inherited from Object.)


Creates a shallow copy of the current Object.(Inherited from Object.)


Returns a string that represents the current object.(Inherited from Object.)

CodeCompileUnit provides a container for a CodeDOM program graph.

CodeCompileUnit contains a collection that can store CodeNamespace objects containing CodeDOM source code graphs, along with a collection of assemblies referenced by the project, and a collection of attributes for the project assembly.

A CodeCompileUnit can be passed to the GenerateCodeFromCompileUnit method of an ICodeGenerator implementation along with other parameters to generate code based on the program graph contained by the compile unit.


Some languages support only a single namespace that contains a single class in a compile unit.

The following code example constructs a CodeCompileUnit that models the program structure of a simple "Hello World" program. This code example is part of a larger example that also produces code from this model, and is provided for the CodeDomProvider class.

// Build a Hello World program graph using 
// System::CodeDom types.
static CodeCompileUnit^ BuildHelloWorldGraph()
    // Create a new CodeCompileUnit to contain 
    // the program graph.
    CodeCompileUnit^ compileUnit = gcnew CodeCompileUnit;

    // Declare a new namespace called Samples.
    CodeNamespace^ samples = gcnew CodeNamespace( "Samples" );

    // Add the new namespace to the compile unit.
    compileUnit->Namespaces->Add( samples );

    // Add the new namespace import for the System namespace.
    samples->Imports->Add( gcnew CodeNamespaceImport( "System" ) );

    // Declare a new type called Class1.
    CodeTypeDeclaration^ class1 = gcnew CodeTypeDeclaration( "Class1" );

    // Add the new type to the namespace's type collection.
    samples->Types->Add( class1 );

    // Declare a new code entry point method.
    CodeEntryPointMethod^ start = gcnew CodeEntryPointMethod;

    // Create a type reference for the System::Console class.
    CodeTypeReferenceExpression^ csSystemConsoleType = gcnew CodeTypeReferenceExpression( "System.Console" );

    // Build a Console::WriteLine statement.
    CodeMethodInvokeExpression^ cs1 = gcnew CodeMethodInvokeExpression( csSystemConsoleType,"WriteLine", gcnew CodePrimitiveExpression("Hello World!") );

    // Add the WriteLine call to the statement collection.
    start->Statements->Add( cs1 );

    // Build another Console::WriteLine statement.
    CodeMethodInvokeExpression^ cs2 = gcnew CodeMethodInvokeExpression( csSystemConsoleType,"WriteLine", gcnew CodePrimitiveExpression( "Press the Enter key to continue." ) );

    // Add the WriteLine call to the statement collection.
    start->Statements->Add( cs2 );

    // Build a call to System::Console::ReadLine.
    CodeMethodReferenceExpression^ csReadLine = gcnew CodeMethodReferenceExpression( csSystemConsoleType, "ReadLine" );
    CodeMethodInvokeExpression^ cs3 = gcnew CodeMethodInvokeExpression( csReadLine, gcnew array<CodeExpression^>(0) );

    // Add the ReadLine statement.
    start->Statements->Add( cs3 );

    // Add the code entry point method to
    // the Members collection of the type.
    class1->Members->Add( start );
    return compileUnit;

.NET Framework
Available since 1.1

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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