XNode.ReplaceWith 方法

定義

多載

範例

以下範例使用此方法，將節點內容替換為不同內容。

XElement xmlTree = new XElement("Root",
    new XElement("Child1", "child1 content"),
    new XElement("Child2", "child2 content"),
    new XElement("Child3", "child3 content"),
    new XElement("Child4", "child4 content"),
    new XElement("Child5", "child5 content")
);
XElement child3 = xmlTree.Element("Child3");
child3.ReplaceWith(
    new XElement("NewChild", "new content")
);
Console.WriteLine(xmlTree);

Dim xmlTree As XElement = _
        <Root>
            <Child1>child1 content</Child1>
            <Child2>child2 content</Child2>
            <Child3>child3 content</Child3>
            <Child4>child4 content</Child4>
            <Child5>child5 content</Child5>
        </Root>

Dim child3 As XElement = xmlTree.<Child3>(0)
child3.ReplaceWith(<NewChild>new content</NewChild>)
Console.WriteLine(xmlTree)

此範例會產生下列輸出：

<Root>
  <Child1>child1 content</Child1>
  <Child2>child2 content</Child2>
  <NewChild>new content</NewChild>
  <Child4>child4 content</Child4>
  <Child5>child5 content</Child5>
</Root>

備註

關於可傳遞給此方法的有效內容詳情，請參閱 XElement 與 XDocument 物件的有效內容。

這種方法會提升事件ChangedChanging。

它 XContainer 將子節點儲存為單一連結串列 XNode 的物件。 這表示方法 ReplaceWith 必須遍歷父容器下方的直接子節點清單。 因此，使用這種方法可能會影響你的表現。

public:
 void ReplaceWith(System::Object ^ content);

public void ReplaceWith(object content);

public void ReplaceWith(object? content);

member this.ReplaceWith : obj -> unit

Public Sub ReplaceWith (content As Object)

XElement xmlTree = new XElement("Root",
    new XElement("Child1", "child1 content"),
    new XElement("Child2", "child2 content"),
    new XElement("Child3", "child3 content"),
    new XElement("Child4", "child4 content"),
    new XElement("Child5", "child5 content")
);
XElement child3 = xmlTree.Element("Child3");
child3.ReplaceWith(
    new XElement("NewChild", "new content")
);
Console.WriteLine(xmlTree);

Dim xmlTree As XElement = _
        <Root>
            <Child1>child1 content</Child1>
            <Child2>child2 content</Child2>
            <Child3>child3 content</Child3>
            <Child4>child4 content</Child4>
            <Child5>child5 content</Child5>
        </Root>

Dim child3 As XElement = xmlTree.<Child3>(0)
child3.ReplaceWith(<NewChild>new content</NewChild>)
Console.WriteLine(xmlTree)

<Root>
  <Child1>child1 content</Child1>
  <Child2>child2 content</Child2>
  <NewChild>new content</NewChild>
  <Child4>child4 content</Child4>
  <Child5>child5 content</Child5>
</Root>

public:
 void ReplaceWith(... cli::array <System::Object ^> ^ content);

public void ReplaceWith(params object[] content);

public void ReplaceWith(params object?[] content);

member this.ReplaceWith : obj[] -> unit

Public Sub ReplaceWith (ParamArray content As Object())

XElement srcTree = new XElement("Root",
    new XElement("Element1", 1),
    new XElement("Element2", 2),
    new XElement("Element3", 3),
    new XElement("Element4", 4),
    new XElement("Element5", 5)
);
XElement xmlTree = new XElement("Root",
    new XElement("Child1", 1),
    new XElement("Child2", 2),
    new XElement("Child3", 3),
    new XElement("Child4", 4),
    new XElement("Child5", 5)
);
XElement child3 = xmlTree.Element("Child3");
child3.ReplaceWith(
    from el in srcTree.Elements()
    where (int)el > 3
    select el
);
Console.WriteLine(xmlTree);

Dim srcTree As XElement = _
        <Root>
            <Element1>1</Element1>
            <Element2>2</Element2>
            <Element3>3</Element3>
            <Element4>4</Element4>
            <Element5>5</Element5>
        </Root>

Dim xmlTree As XElement = _
        <Root>
            <Child1>1</Child1>
            <Child2>2</Child2>
            <Child3>3</Child3>
            <Child4>4</Child4>
            <Child5>5</Child5>
        </Root>

Dim child3 As XElement = xmlTree.<Child3>(0)
child3.ReplaceWith( _
    From el In srcTree.Elements() _
    Where (CInt(el) > 3) _
    Select el)

Console.WriteLine(xmlTree)

<Root>
  <Child1>1</Child1>
  <Child2>2</Child2>
  <Element4>4</Element4>
  <Element5>5</Element5>
  <Child4>4</Child4>
  <Child5>5</Child5>
</Root>