XML常用操作之一

using System;


using System.Data;


using System.Configuration;


using System.Web;


using System.Web.Security;


using System.Web.UI;


using System.Web.UI.WebControls;


using System.Web.UI.WebControls.WebParts;


using System.Web.UI.HtmlControls;


public partial class _Default : System.Web.UI.Page




...{


protected void Page_Load(object sender, EventArgs e)




...{


}


//读取数据


protected void Button1_Click(object sender, EventArgs e)




...{


DataSet ds = new DataSet();


ds.ReadXml(Server.MapPath("book.xml"));


if (ds.Tables.Count > 0)




...{


this.GridView1.DataSource = ds;


this.GridView1.DataBind();


}


}


//过滤数据


protected void Button2_Click(object sender, EventArgs e)




...{


DataSet ds = new DataSet();


ds.ReadXmlSchema(Server.MapPath("book.xsd"));


ds.ReadXml(Server.MapPath("book.xml"));





DataView dv = new DataView(ds.Tables[0]);


dv.Sort = "price desc";


//dv.RowFilter = "title = 'database设计'";


this.GridView1.DataSource = dv;


this.GridView1.DataBind();


}


//添加记录


protected void Button3_Click(object sender, EventArgs e)




...{


DataSet ds = new DataSet();


ds.ReadXml(Server.MapPath("book.xml"));


ds.ReadXmlSchema(Server.MapPath("book.xsd"));


DataTable dt = ds.Tables[0];


DataRow dr = dt.NewRow();


dr[0] = "1";


dr[1] ="2";


dr[2] = "3";


dt.Rows.Add(dr);


// ds.Tables.Add(dt);


ds.WriteXml(Server.MapPath("book.xml"));


this.GridView1.DataSource = ds;


this.GridView1.DataBind();


}


//更新数据


protected void Button4_Click(object sender, EventArgs e)




...{


DataSet ds = new DataSet();


ds.ReadXml(Server.MapPath("book.xml"));


ds.ReadXmlSchema(Server.MapPath("book.xsd"));


for (int i = 0; i < ds.Tables[0].Rows.Count; i++)




...{


if (ds.Tables[0].Rows[i]["title"].ToString().Trim() == "asp.net")




...{


for (int j = 0; j < ds.Tables[0].Columns.Count; j++)




...{


ds.Tables[0].Rows[i][j] = j;


}


}


}


ds.AcceptChanges();


ds.WriteXml(Server.MapPath("book.xml"));


this.GridView1.DataSource = ds;


this.GridView1.DataBind();


}


protected void Button5_Click(object sender, EventArgs e)




...{


this.del(10);


}


//删除记录


private void del(int strid)




...{


DataSet ds = new DataSet();


ds.ReadXml(Server.MapPath("book.xml"));


ds.ReadXmlSchema(Server.MapPath("book.xsd"));


ds.Tables[0].Rows[strid].Delete();


ds.AcceptChanges();


ds.WriteXml(Server.MapPath("book.xml"));


this.GridView1.DataSource = ds;


this.GridView1.DataBind();


}


}