(一)XML Readers和Writers类
(二)什么时候使用XmlReader和XmlWriter类
XmlReader类
? You need to only read the document.
? The document is huge.
? You need to keep the memory footprint small.
? You want to work with many XML documents that are a reasonable size.
? You do not want to access various parts of the document randomly.
XmlWriter类
? You want to only write content.
? You want to keep the memory footprint small.
? You are writing huge XML documents and looking for better performance.
(三)Reader类
- XmlTextReader类
使用XmlTextReader类打开XML文档：
1: using System;
2: using System.Xml;
3: using System.IO;
4: using System.Text;
5:
6: public partial class Default7 : System.Web.UI.Page
7: {
8: protected void Page_Load(object sender, EventArgs e)
9: {
10:
11: }
12: protected void Button1_Click(object sender, EventArgs e)
13: {
14: XmlTextReader reader;
15: if (RadioButton1.Checked)
16: {
17: reader = new XmlTextReader(TextBox1.Text);
18: }
19: if (RadioButton2.Checked)
20: {
21: FileStream stream = File.OpenRead(TextBox1.Text);
22: reader = new XmlTextReader(stream);
23: stream.Close();
24: reader.Close();
25: }
26: if (RadioButton3.Checked)
27: {
28: MemoryStream ms = new MemoryStream();
29: byte[] data = ASCIIEncoding.ASCII.GetBytes(TextBox1.Text);
30: ms.Write(data, 0, data.Length);
31: reader = new XmlTextReader(ms);
32: //some processing code
33: ms.Close();
34: reader.Close();
35: }
36: Response.Write("XML Document Opened Successfully!");
37: }
38: }
- XmlValidatingReader类
- XmlNodeReader类