CodeClass.AddImplementedInterface Method

  • Article

Adds an interface to the list of inherited objects.

Namespace:  EnvDTE
Assembly:  EnvDTE (in EnvDTE.dll)

Syntax

'Declaration
Function AddImplementedInterface ( _
    Base As Object, _
    Position As Object _
) As CodeInterface

CodeInterface AddImplementedInterface(
    Object Base,
    Object Position
)

CodeInterface^ AddImplementedInterface(
    Object^ Base, 
    Object^ Position
)

abstract AddImplementedInterface : 
        Base:Object * 
        Position:Object -> CodeInterface

function AddImplementedInterface(
    Base : Object, 
    Position : Object
) : CodeInterface

Parameters

  • Base
    Type: System.Object

    Required. The interface the class will implement. This is either a CodeInterface or a fully-qualified type name.

  • Position
    Type: System.Object

    Optional. Default = 0. The code element after which to add the new element. If the value is a CodeElement, then the new element is added immediately after it.

    If the value is a Long, then AddImplementedInterface indicates the element after which to add the new element.

    Because collections begin their count at 1, passing 0 indicates that the new element should be placed at the beginning of the collection. A value of -1 means the element should be placed at the end.

Return Value

Type: EnvDTE.CodeInterface
A CodeInterface object.

Remarks

AddImplementedInterface adds a reference to an interface that the CodeClass implements. AddImplementedInterface does not insert method stubs for the interface members.

Visual C++ requires the colon-separated (::) format for its fully qualified type names. All other languages support the period-separated format.

The correctness of the arguments is determined by the language behind the code model.

Note

The values of code model elements such as classes, structs, functions, attributes, delegates, and so forth can be non-deterministic after making certain kinds of edits, meaning that their values cannot be relied upon to always remain the same. For more information, see the section Code Model Element Values Can Change in Discovering Code by Using the Code Model (Visual Basic).

Examples

 Sub AddImplementedInterfaceExample(ByVal dte As DTE2)

    ' Before running this example, open a code document from a project
    ' and place the insertion point inside a class definition.
    Try
        ' Retrieve the CodeClass at the insertion point.
        Dim sel As TextSelection = _
            CType(dte.ActiveDocument.Selection, TextSelection)
        Dim cls As CodeClass = _
            CType(sel.ActivePoint.CodeElement( _
            vsCMElement.vsCMElementClass), CodeClass)
        Dim cm As CodeModel = _
            cls.ProjectItem.ContainingProject.CodeModel

        ' Add a new implemented interface to the class.
        cls.AddImplementedInterface(ConvertFullName(cm, _
            "System.IDisposable"))
    Catch ex As Exception
        MsgBox(ex.Message)
    End Try

End Sub

Function ConvertFullName(ByVal cm As CodeModel, _
    ByVal fullName As String) As String

    ' Convert a .NET type name into a C++ type name.
    If (cm.Language = CodeModelLanguageConstants.vsCMLanguageVC) Or _
        (cm.Language = CodeModelLanguageConstants.vsCMLanguageMC) Then
        Return fullName.Replace(".", "::")
    Else
        Return fullName
    End If

End Function

public void AddImplementedInterfaceExample(DTE2 dte)
{
    // Before running this example, open a code document from a project
    // and place the insertion point inside a class definition.
    try
    {
        // Retrieve the CodeClass at the insertion point.
        TextSelection sel = 
            (TextSelection)dte.ActiveDocument.Selection;
        CodeClass cls = 
            (CodeClass)sel.ActivePoint.get_CodeElement(
            vsCMElement.vsCMElementClass);
        CodeModel cm = cls.ProjectItem.ContainingProject.CodeModel;

        // Add a new implemented interface to the class.
        cls.AddImplementedInterface(ConvertFullName(cm, 
            "System.IDisposable"), -1);
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}

string ConvertFullName(CodeModel cm, string fullName)
{
    // Convert a .NET type name into a C++ type name.
    if ((cm.Language == CodeModelLanguageConstants.vsCMLanguageVC) || 
        (cm.Language == CodeModelLanguageConstants.vsCMLanguageMC))
        return fullName.Replace(".", "::");
    else
        return fullName;
}

.NET Framework Security

See Also

Reference

CodeClass Interface

EnvDTE Namespace

Other Resources

How to: Compile and Run the Automation Object Model Code Examples

Discovering Code by Using the Code Model (Visual Basic)

Discovering Code by Using the Code Model (Visual C#)