CodeClass.DerivedTypes Property

Gets a collection of objects derived from this CodeClass object. Not implemented in Visual C#.

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

Syntax

'Declaration
ReadOnly Property DerivedTypes As CodeElements

CodeElements DerivedTypes { get; }

property CodeElements^ DerivedTypes {
    CodeElements^ get ();
}

abstract DerivedTypes : CodeElements with get

function get DerivedTypes () : CodeElements

Property Value

Type: EnvDTE.CodeElements
A CodeElements collection.

Remarks

DerivedTypes returns a CodeElements collection of the types that derive from this CodeClass. DerivedTypes only returns types that derive from CodeClass within a single project, not across other projects or languages. If the code element is a vsCMElementInterface, then the returned collection also includes CodeClass objects that implement the interface.

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 DerivedTypesExample(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)

        ' Find the namespace's children.
        Dim types As String
        Dim elem As CodeElement
        For Each elem In cls.DerivedTypes
            types &= elem.Name & vbCrLf
        Next

        MsgBox(cls.Name & " has the following derived types:" & _
            vbCrLf & vbCrLf & types)
    Catch ex As Exception
        MsgBox(ex.Message)
    End Try

End Sub

public void DerivedTypesExample(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);

        // Find the namespace's children.
        string types = "";
        
        foreach (CodeElement elem in cls.DerivedTypes)
            types += elem.Name + "\r\n";

        MessageBox.Show(cls.Name + 
            " has the following derived types:\r\n\r\n" + types);
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}

.NET Framework Security

• Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

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#)