2009-04-16 74 views
0

比方說,我有一個XmlNode的:如何從XmlNode中刪除文本?

<A>1</A> 

如何從中刪除文本,所以我得到:的

<A /> 

代替:

<A></A> 

下面是一個單元測試,顯示了我到目前爲止所嘗試的。

[Test] 
    public void RemoveXmlTextTest() 
    { 
    string xmlString = @"<B><A>1</A></B>";   
    XmlDocument doc = new XmlDocument(); 
    doc.LoadXml(xmlString); 
    XmlNode testNode = doc.SelectSingleNode("//A"); 

    //1. Set innerText to string.Empty - not working 
    //testNode.InnerText = String.Empty; 

    //2. Call removeAll - not working   
    //testNode.RemoveAll(); 

    //3. testNode has one child with name '#text' - remove it - not working 
    //testNode.RemoveChild(testNode.FirstChild); 

    //4. Replace node with a new empty one - working but extremally ugly :(
    //All references to testNode still points to the old one !!!! 
    testNode.ParentNode.ReplaceChild(doc.CreateElement(testNode.Name), testNode); 

    //Is there some better way to do it? 

    testNode = doc.SelectSingleNode("//A"); 
    Assert.AreEqual("<A />", testNode.OuterXml); 
    } 

回答

2

您是否嘗試過將XmlElement.IsEmpty設置爲true?

(顯然這意味着要鑄造到XmlElement,但這是問題的唯一情況。)