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XML常用操作之一

2013年12月08日 ⁄ 综合 ⁄ 共 2776字 ⁄ 字号 评论关闭
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();
    }

}

 

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