CodeClass.RemoveBase 方法

發行項
08/12/2011

從基底清單中移除物件。

命名空間： EnvDTE
組件： EnvDTE (在 EnvDTE.dll 中)

語法

'宣告
Sub RemoveBase ( _
    Element As Object _
)

void RemoveBase(
    Object Element
)

void RemoveBase(
    Object^ Element
)

abstract RemoveBase : 
        Element:Object -> unit

function RemoveBase(
    Element : Object
)

參數

Element
型別：System.Object
必要項。CodeElement 或集合中某一項目的名稱。

備註

必要項。 CodeElement 或集合中某一項目的名稱。

被移除的項目可以是集合中某個 CodeElement 物件，也可以是集合中某個唯一項目的名稱。

注意事項
在特定類型的編輯之後，程式碼模型項目 (例如類別、結構、函式、屬性、委派等) 的值可能不具決定性，表示其值不一定維持相同。如需詳細資訊，請參閱使用程式碼模型探索程式碼 (Visual Basic) 的＜程式碼模型項目值可以變更＞一節。

範例

 Sub RemoveBaseExample(ByVal dte As DTE2)

    ' NOTE: This example requires a reference to the 
    '       System.Collections namespace.

    ' 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)

        If MsgBox("Remove all bases from " & cls.Name & "?", _
            MsgBoxStyle.YesNo) = MsgBoxResult.Yes Then
            ' Remove every base except System.Object.
            Dim bases As New ArrayList()
            Dim base As CodeElement
            For Each base In cls.Bases
                If base.FullName <> ConvertFullName( _
                    cls.ProjectItem.ContainingProject.CodeModel, _
                    "System.Object") Then
                    bases.Add(base)
                End If
            Next

            For Each base In bases
                cls.RemoveBase(base)
            Next
        End If
    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 RemoveBaseExample(DTE2 dte)
{
    // NOTE: This example requires a reference to the 
    //       System.Collections namespace.

    // 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);

        if (MessageBox.Show("Remove all bases from " + cls.Name + "?", 
            "", MessageBoxButtons.YesNo) == DialogResult.Yes)
        {
            // Remove every base except System.Object.
            ArrayList bases = new ArrayList();
            
            foreach (CodeElement baseElement in cls.Bases)
            {
                if (baseElement.FullName != ConvertFullName(
                    cls.ProjectItem.ContainingProject.CodeModel, 
                    "System.Object"))
                    bases.Add(baseElement);
            }

            foreach (CodeElement baseElement in bases)
                cls.RemoveBase(baseElement);
        }
    }
    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;
}