DataSet转化为Xml，Xml转化为DataSet，Ado.net中使用方法DataSet.WriteXml()和DataSet.ReadXml()，由于有多个重载方法，所以这里有多条路径可以实现，可谓条条大道通罗马。这里我就把所有的用法来尝试下，希望给大家有个借鉴作用。

因为DataSet.ReadXml()和DataSet.WriteXml()共8种重载方法，前四种是不带架构的，后四种带架构。这里举出带架构的4种方法。

/// <summary>         /// DataSet和Xml之间的转换         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void DsAndXml_Click(object sender, EventArgs e)

{             //自定义一个DataSet，里面有一列a，一行值为"hello world!"，Xml数据从这个数据集中来读取

DataSet dsWrite = new DataSet();

DataTable dt = new DataTable();

dt.Columns.Add("a", typeof(string));

DataRow dr = dt.NewRow();

dr[0] = "hello world!";

dt.Rows.Add(dr);

dsWrite.Tables.Add(dt);

//自定义一个DataSet用来从xml中读取数据

DataSet dsRead = new DataSet();

int k = Convert.ToInt32(this.textBox1.Text.ToString());

switch(k)

{           case 1:

Stream stream = new FileStream(@System.AppDomain.CurrentDomain.BaseDirectory.ToString()+"Test.txt", FileMode.OpenOrCreate, FileAccess.ReadWrite);

//dsWrite.WriteXml(stream);

dsWrite.WriteXml(stream, XmlWriteMode.WriteSchema);

stream.Close();

dsRead.ReadXml(@System.AppDomain.CurrentDomain.BaseDirectory.ToString() + "Test.txt");

break;

case 2:

dsWrite.WriteXml(@System.AppDomain.CurrentDomain.BaseDirectory.ToString() + "Test.txt");

dsRead.ReadXml(@System.AppDomain.CurrentDomain.BaseDirectory.ToString() + "Test.txt");

break;

case 3:

StringBuilder s1 = new StringBuilder();

TextWriter tw1 = new StringWriter(s1);

System.Xml.XmlTextWriter xtw1= new System.Xml.XmlTextWriter(tw1);

dsWrite.WriteXml(xtw1,XmlWriteMode.WriteSchema);

string xml1 = s1.ToString();                     //读入

TextReader tr1 = new StringReader(xml1);

dsRead.ReadXml(tr1,XmlReadMode.ReadSchema);

//System.Xml.XmlReader xr = System.Xml.XmlReader.Create(tr1);

//dsRead.ReadXml(xr);

break;

case 4:

StringBuilder s = new StringBuilder();

TextWriter tw = new StringWriter(s);

dsWrite.WriteXml(tw, XmlWriteMode.WriteSchema);

string xml = s.ToString();

TextReader tr = new StringReader(xml);

dsRead.ReadXml(tr,XmlReadMode.ReadSchema);

break;

default:

break;

}

}

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/feijian14/archive/2008/06/28/2593930.aspx