CodeClass2.Bases 属性

2011-08-12

获取此代码类派生自的类的集合。

命名空间： EnvDTE80
程序集： EnvDTE80（在 EnvDTE80.dll 中）

语法

声明
ReadOnly Property Bases As CodeElements
    Get

CodeElements Bases { get; }

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

abstract Bases : CodeElements

function get Bases () : CodeElements

属性值

类型：EnvDTE.CodeElements
一个 CodeElements 集合。

实现

CodeClass.Bases

备注

Bases 是 CodeElements 的超类型。对于 Visual Basic 和 Visual C#，除非代码类型为 CodeInterface 或 CodeInterface2，否则在该集合中始终只有一个元素。

提示

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

[Visual Basic]

Sub BasesExample(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 CodeClass2 = _
            CType(sel.ActivePoint.CodeElement( _
            vsCMElement.vsCMElementClass), CodeClass2)

        ' Enumerate the CodeClass's bases.
        Dim bases As String = ""
        Dim elem As CodeElement2
        For Each elem In cls.Bases
            bases &= elem.FullName & vbCrLf
        Next

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

[C#]

public void BasesExample(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;
        CodeClass2 cls = 
            (CodeClass)sel.ActivePoint.get_CodeElement2(
            vsCMElement.vsCMElementClass);

        // Enumerate the CodeClass's bases.
        string bases = "";
        foreach (CodeElement2 elem in cls.Bases)
        {
        bases += elem.FullName + Environment.NewLine;
        }

        MessageBox.Show(cls.Name + " has the following bases:" + 
            Environment.NewLine + Environment.NewLine + bases);
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}