DocumentBase.XMLBeforeDelete 事件

在用户从文档中删除 XML 元素时发生。 如果同时从文档中删除多个元素（例如，在剪切和粘贴 XML 时），则会针对删除的每个元素引发该事件。

命名空间：  Microsoft.Office.Tools.Word
程序集：  Microsoft.Office.Tools.Word.v4.0.Utilities（在 Microsoft.Office.Tools.Word.v4.0.Utilities.dll 中）

语法

声明
Public Event XMLBeforeDelete As DocumentEvents2_XMLBeforeDeleteEventHandler

public event DocumentEvents2_XMLBeforeDeleteEventHandler XMLBeforeDelete

示例

下面的代码示例演示 XMLAfterInsert 和 XMLBeforeDelete 事件的事件处理程序。 此代码在从该文档删除 XMLNode 之前，将 XMLNode 添加到该文档之后，显示一条消息。 若要测试此代码示例，请使用**“XML 结构”任务窗格向文档添加 XML 元素，然后用“编辑”菜单上的“撤消键入”和“恢复键入”**选项进行测试。 此示例假定当前文档映射到有效的 XML 架构。 若要使用此示例，请从文档级项目内的 ThisDocument 类中运行此示例。

Private Sub DocumentXMLBeforeAndAfterInsert()
    AddHandler Me.XMLAfterInsert, AddressOf ThisDocument_XMLAfterInsert
    AddHandler Me.XMLBeforeDelete, AddressOf ThisDocument_XMLBeforeDelete
End Sub 

Private Sub ThisDocument_XMLBeforeDelete(ByVal DeletedRange As Word.Range, ByVal OldXMLNode As Word.XMLNode, ByVal InUndoRedo As Boolean)
    If InUndoRedo Then
        MessageBox.Show(OldXMLNode.BaseName & " element is about to be deleted as a result" _
            & " of an undo or redo operation.")
    Else
        MessageBox.Show(OldXMLNode.BaseName & " element is about to be deleted.")
    End If
End Sub

Private Sub ThisDocument_XMLAfterInsert(ByVal NewXMLNode As Word.XMLNode, ByVal InUndoRedo As Boolean)
    If InUndoRedo Then
        MessageBox.Show(NewXMLNode.BaseName & " element was " & "inserted as a result " _
            & "of an undo or redo operation.")
    Else
        MessageBox.Show(NewXMLNode.BaseName & " element was inserted.")
    End If
End Sub

private void DocumentXMLBeforeAndAfterInsert()
{
    this.XMLAfterInsert +=
        new Word.DocumentEvents2_XMLAfterInsertEventHandler(
        ThisDocument_XMLAfterInsert);

    this.XMLBeforeDelete +=
        new Word.DocumentEvents2_XMLBeforeDeleteEventHandler(
        ThisDocument_XMLBeforeDelete);
}

void ThisDocument_XMLBeforeDelete(Word.Range DeletedRange,
    Word.XMLNode OldXMLNode, bool InUndoRedo)
{
    if (InUndoRedo)
    {
        MessageBox.Show(OldXMLNode.BaseName +
            " element is about to be deleted as a result" +
            " of an undo or redo operation.");
    }
    else
    {
        MessageBox.Show(OldXMLNode.BaseName +
            " element is about to be deleted.");
    }
}

void ThisDocument_XMLAfterInsert(Word.XMLNode NewXMLNode,
    bool InUndoRedo)
{
    if (InUndoRedo)
    {
        MessageBox.Show(NewXMLNode.BaseName + " element was " +
            "inserted as a result of an undo or redo operation.");
    }
    else
    {
        MessageBox.Show(NewXMLNode.BaseName + " element was inserted.");
    }
}

.NET Framework 安全性

• 对直接调用方的完全信任。此成员不能由部分信任的代码使用。有关更多信息，请参见通过部分受信任的代码使用库。

请参见

参考

DocumentBase 类

Microsoft.Office.Tools.Word 命名空间