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CodeCompileUnit.Namespaces Property

Gets the collection of namespaces.

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

public CodeNamespaceCollection Namespaces { get; }

Property Value

Type: System.CodeDom.CodeNamespaceCollection
A CodeNamespaceCollection that indicates the namespaces that the compile unit uses.

You can add and remove CodeNamespace objects from this collection. Each object represents a namespace.


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 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.
public static CodeCompileUnit BuildHelloWorldGraph()
    // Create a new CodeCompileUnit to contain 
    // the program graph.
    CodeCompileUnit compileUnit = new CodeCompileUnit();

    // Declare a new namespace called Samples.
    CodeNamespace samples = new CodeNamespace("Samples");
    // Add the new namespace to the compile unit.

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

    // Declare a new type called Class1.
    CodeTypeDeclaration class1 = new CodeTypeDeclaration("Class1");
    // Add the new type to the namespace type collection.

    // Declare a new code entry point method.
    CodeEntryPointMethod start = new CodeEntryPointMethod();

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

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

    // Add the WriteLine call to the statement collection.

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

    // Add the WriteLine call to the statement collection.

    // Build a call to System.Console.ReadLine.
    CodeMethodInvokeExpression csReadLine = new CodeMethodInvokeExpression(
        csSystemConsoleType, "ReadLine");

    // Add the ReadLine statement.

    // Add the code entry point method to
    // the Members collection of the type.

    return compileUnit;

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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.

Community Additions

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