NodeInsertAndDeleteEventHandler 委托

  • 项目

表示处理 XMLNode 控件的 AfterInsert 和 BeforeDelete 事件，以及 XMLNodes 控件的 AfterInsert 和 BeforeDelete 事件的方法。

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

语法

声明
Public Delegate Sub NodeInsertAndDeleteEventHandler ( _
    sender As Object, _
    e As NodeInsertAndDeleteEventArgs _
)

public delegate void NodeInsertAndDeleteEventHandler(
    Object sender,
    NodeInsertAndDeleteEventArgs e
)

参数

备注

当创建 NodeInsertAndDeleteEventHandler 委托时，将标识处理事件的方法。 若要使该事件与事件处理程序相关联，请将该委托的一个实例添加到事件中。 每当事件出现时就调用事件处理程序，直到移除该委托。 有关委托的更多信息，请参见事件和委托。

示例

下面的代码示例演示 AfterInsert 和 BeforeDelete 事件的事件处理程序。 这些事件处理程序在从该文档删除 XMLNode 之前，将 XMLNode 添加到该文档之后，显示一个消息框。 此示例还使用 RemoveChild 方法删除节点，并以编程方式引发 BeforeDelete 事件。 此示例假定当前文档包含一个名为 CustomerNode 的 XMLNode，它包含一个名为 CustomerDateNode 的子节点。

Private Sub XMLNodeInsertAndDelete()
    Me.CustomerNode.RemoveChild(Me.CustomerDateNode.InnerObject)
End Sub

Private Sub XMLNode_BeforeDelete(ByVal sender As Object, _
    ByVal e As Microsoft.Office.Tools.Word.NodeInsertAndDeleteEventArgs) _
    Handles CustomerDateNode.BeforeDelete

    Dim tempNode As Microsoft.Office.Tools.Word.XMLNode = _
        CType(sender, Microsoft.Office.Tools.Word.XMLNode)
    If e.InUndoRedo Then
        MsgBox(tempNode.BaseName & " element is about to be " & _
            "deleted as a result of an undo or redo operation.")
    Else
        MsgBox(tempNode.BaseName & " element is about to be " & _
            "deleted.")
    End If
End Sub

Private Sub XMLNode_AfterInsert(ByVal sender As Object, _
    ByVal e As Microsoft.Office.Tools.Word.NodeInsertAndDeleteEventArgs) _
    Handles CustomerDateNode.AfterInsert

    Dim tempNode As Microsoft.Office.Tools.Word.XMLNode = _
        CType(sender, Microsoft.Office.Tools.Word.XMLNode)

    If e.InUndoRedo Then
        MsgBox(tempNode.BaseName & " element was " & _
            "inserted as a result of an undo or redo operation.")
    Else
        MsgBox(tempNode.BaseName & " element was inserted.")
    End If
End Sub

private void XMLNodeInsertAndDelete()
{
    this.CustomerDateNode.AfterInsert +=
        new Microsoft.Office.Tools.Word.NodeInsertAndDeleteEventHandler(
        XMLNode_AfterInsert);

    this.CustomerDateNode.BeforeDelete +=
        new Microsoft.Office.Tools.Word.NodeInsertAndDeleteEventHandler(
        XMLNode_BeforeDelete);

    this.CustomerNode.RemoveChild(this.CustomerDateNode.InnerObject);
}

void XMLNode_BeforeDelete(object sender, 
    Microsoft.Office.Tools.Word.NodeInsertAndDeleteEventArgs e)
{
    Microsoft.Office.Tools.Word.XMLNode tempNode =
        (Microsoft.Office.Tools.Word.XMLNode)sender;

    if (e.InUndoRedo)
    {
        MessageBox.Show(tempNode.BaseName + " element is about to be " +
            "deleted as a result of an undo or redo operation.");
    }
    else
    {
        MessageBox.Show(tempNode.BaseName + " element is about to be " +
            "deleted.");
    }
}


void XMLNode_AfterInsert(object sender,
    Microsoft.Office.Tools.Word.NodeInsertAndDeleteEventArgs e)
{
    Microsoft.Office.Tools.Word.XMLNode tempNode =
        (Microsoft.Office.Tools.Word.XMLNode)sender;

    if (e.InUndoRedo)
    {
        MessageBox.Show(tempNode.BaseName + " element was " +
            "inserted as a result of an undo or redo operation.");
    }
    else
    {
        MessageBox.Show(tempNode.BaseName + " element was inserted.");
    }
}

请参见

参考

Microsoft.Office.Tools.Word 命名空间