CodeClass.DerivedTypes 属性

项目
10/25/2012

获取从此 CodeClass 对象派生的对象的集合。未在 Visual C# 中实现。

命名空间： EnvDTE
程序集： EnvDTE（在 EnvDTE.dll 中）

语法

声明
ReadOnly Property DerivedTypes As CodeElements

CodeElements DerivedTypes { get; }

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

abstract DerivedTypes : CodeElements

function get DerivedTypes () : CodeElements

属性值

类型：EnvDTE.CodeElements
一个 CodeElements 集合。

备注

DerivedTypes 返回从此 CodeClass 派生的类型的 CodeElements 集合。 DerivedTypes 仅返回单个项目内由 CodeClass 派生的类型，而不能跨其他项目或语言。如果代码元素为 vsCMElementInterface，则返回的集合还包括实现该接口的 CodeClass 对象。

备注

在进行某些类型的编辑之后，代码模型元素（如类、结构、函数、特性、委托等）的值可能是非确定性的，这意味着不能指望它们的值总是保持不变。有关更多信息，请参见使用代码模型查找代码 (Visual Basic) 中的“代码模型元素的值可能会更改”一节。

示例

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);
    }
}