DataSet轉化為Xml，Xml轉化為DataSet，Ado.net中使用方法DataSet.WriteXml()和DataSet.ReadXml()，由于有多個重載方法，所以這里有多條路徑可以實現，可謂條條大道通羅馬。這里我就把所有的用法來嘗試下，希望給大家有個借鑒作用。?????

因為DataSet.ReadXml()和DataSet.WriteXml()共8種重載方法，前四種是不帶架構的，后四種帶架構。這里舉出帶架構的4種方法。??????

/// <summary>???????? /// DataSet和Xml之間的轉換???????? /// </summary>???????? /// <param name="sender"></param>???????? /// <param name="e"></param>???????? private void DsAndXml_Click(object sender, EventArgs e)????????

{???????????? //自定義一個DataSet，里面有一列a，一行值為"hello world!"，Xml數據從這個數據集中來讀取????????????

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);????????????

//自定義一個DataSet用來從xml中讀取數據????????????

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();???????????????????? //讀入????????????????????

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;??????????????

}????????

}?????

本文來自CSDN博客，轉載請標明出處：http://blog.csdn.net/feijian14/archive/2008/06/28/2593930.aspx

轉載于:https://www.cnblogs.com/uwking/archive/2011/04/13/2014584.html

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