C# 创建新的 XML 元素
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Create new XML Element
提问by Fred
I have this XML file:
我有这个 XML 文件：
<div>
<span id="1">
<a class="time">
25 April 2013 - 11:41PM #3
</a>
<p class="post">
Blog Page Created
</p>
<br/>
</span>
</div>
I know this is the exact format for HTML, but still, this is a XML file.
我知道这是 HTML 的确切格式，但仍然是一个 XML 文件。
My problem is that I want to create another span tag.
我的问题是我想创建另一个 span 标签。
This tag should be added above the tag that already exists.
这个标签应该添加在已经存在的标签之上。
I tried some code but its all just a mess and now I am even more confused to how to achieve this.
我尝试了一些代码，但它只是一团糟，现在我对如何实现这一目标更加困惑。
I am doing C# ASP.NET.
我在做 C# ASP.NET。
The end output should look like this:
最终输出应如下所示：
<div>
<span id="2">
<a class="time">
25 April 2013 - 3:00PM #3
</a>
<p class="post">
Blog Page Created
</p>
<br/>
</span>
<span id="1">
<a class="time">
25 April 2013 - 3:00PM #3
</a>
<p class="post">
Blog Page Created
</p>
<br/>
</span>
</div>
采纳答案by Fred
Ok so this is the answer, for anyone who wants to see:
好的，这就是答案，对于任何想看的人：
//This list gets populated somewhere else with all the existing id's...
List<int> allId = new List<int>();
doc = new XmlDocument();
doc.Load(Server.MapPath("../data/blog.xml"));
XmlNodeList list = doc.SelectNodes("div/span");
int newId = 1;
for (int i = 0; i < list.Count + 1; i++)
{
if (allId.Contains(newId))
{
newId++;
}
else
{
string blogText = txtCreateBlog.Text;
string blogDate = DateTime.Now.Day + " " + DateTime.Now.ToString("MMMM") + " " + DateTime.Now.Year + " - " + DateTime.Now.ToString("hh:mm tt") + " #" + newId.ToString();
XmlNode newNode = doc.SelectSingleNode("div/span[@id=\"1\"]");
XmlElement span = doc.CreateElement("span");
span.SetAttribute("id", newId.ToString());
doc.DocumentElement.PrependChild(span);
span.SelectSingleNode("div/span[@id=\"" + newId.ToString() + "\"]");
XmlNode newNode2 = doc.SelectSingleNode("div/span[@id=\"" + newId.ToString() + "\"]");
XmlElement a = doc.CreateElement("a");
a.SetAttribute("class", "time");
a.InnerText = blogDate.ToString();
span.AppendChild(a);
XmlNode newNode3 = doc.SelectSingleNode("div/span[@id=\"" + newId.ToString() + "\"]");
XmlElement p = doc.CreateElement("p");
p.SetAttribute("class", "post");
p.InnerText = blogText.ToString();
span.AppendChild(p);
XmlNode newNode4 = doc.SelectSingleNode("div/span[@id=\"" + newId.ToString() + "\"]");
XmlElement br = doc.CreateElement("br");
span.AppendChild(br);
doc.Save(Server.MapPath("../data/blog.xml"));
}
回答by Sam I am says Reinstate Monica
here's something to get you started
这里有一些东西可以让你开始
XmlDocument xDoc = new XmlDocument();
xDoc.Load("XMLFile1.xml");
XmlElement span = xDoc.CreateElement("span");
xDoc.DocumentElement.AppendChild(span);
xDoc.Save("XMLFile1.xml");
you can look at the XmlDocumentdocumentation for more functionality
您可以查看XmlDocument文档以了解更多功能
the linq-to-sql XDocument, works similarly.
linq-to-sql XDocument 的工作原理类似。
