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CodeAttributeArgument Class

Represents an argument used in a metadata attribute declaration.


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

public class CodeAttributeArgument

The CodeAttributeArgument type exposes the following members.

Public methodCodeAttributeArgument()Initializes a new instance of the CodeAttributeArgument class.
Public methodCodeAttributeArgument(CodeExpression)Initializes a new instance of the CodeAttributeArgument class using the specified value.
Public methodCodeAttributeArgument(String, CodeExpression)Initializes a new instance of the CodeAttributeArgument class using the specified name and value.

Public propertyNameGets or sets the name of the attribute.
Public propertyValueGets or sets the value for the attribute argument.

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 a hash function for a particular type. (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.)

CodeAttributeArgument can be used to represent either the value for a single argument of an attribute constructor, or a value with which to initialize a property of the attribute.

The Value property indicates the value of the argument. The Name property, when used, indicates the name of a property of the attribute to which to assign the value.

Attribute declarations are frequently initialized with a number of arguments that are passed into the constructor of the attribute at run time. To provide arguments to the constructor for an attribute, add a CodeAttributeArgument for each argument to the Arguments collection of a CodeAttributeDeclaration. Only the Value property of each CodeAttributeArgument needs to be initialized. The order of arguments within the collection must correspond to the order of arguments in the method signature of the constructor for the attribute.

You can also set properties of the attribute that are not available through the constructor by providing a CodeAttributeArgument that indicates the name of the property to set, along with the value to set.

The following code creates a class, and adds code attributes to declare that the class is serializable and obsolete.

using System;
using System.CodeDom;
using System.CodeDom.Compiler;

public class CodeGenExample
    static void Main()
        // Declare a new type called Class1.
        CodeTypeDeclaration class1 = new CodeTypeDeclaration("Class1");

        // Use attributes to mark the class as serializable and obsolete.
        CodeAttributeDeclaration codeAttrDecl =
            new CodeAttributeDeclaration("System.Serializable");

        CodeAttributeArgument codeAttr =
            new CodeAttributeArgument( new CodePrimitiveExpression("This class is obsolete."));
        codeAttrDecl = new CodeAttributeDeclaration("System.Obsolete", codeAttr);

        // Create a C# code provider
        CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp");

        // Generate code and send the output to the console
        provider.GenerateCodeFromType(class1, Console.Out, new CodeGeneratorOptions());

// The C# code generator produces the following source code for the preceeding example code:
// [System.Serializable()]
// [System.Obsolete("This class is obsolete.")]
// public class Class1 {
// }

.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.

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