Net8:xml read-write operation "XML file instance of AD control"

The original Published time: 2008-08-05--from my Baidu article [imported by moving tools]

"With the DataList control, the DataList control learns, mostly knowing that other buttons CommandName properties should be changed to Edit,update,delete"

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;

Using System.Xml;
Using System.Xml.XPath;

public partial class _default:system.web.ui.page
{
protected void Page_Load (object sender, EventArgs e)
{
if (! IsPostBack)
{
Fill ();
}

}

protected void Fill ()
{
DataSet ds=new DataSet ();
Ds. READXML (Server.MapPath ("~/app_data/ad.xml"));
Datalist1.datasource=ds. Tables[0]. DefaultView;
Datalist1.databind ();

session["DST"]=DS;
}

protected void Button1_Click (object sender, EventArgs e)
{

}
protected void Datalist1_selectedindexchanged (object sender, EventArgs e)
{

}
protected void Datalist1_editcommand (object source, DataListCommandEventArgs e)
{
Datalist1.edititemindex = E.item.itemindex;
Fill ();
}
protected void Datalist1_updatecommand (object source, DataListCommandEventArgs e)
{
DataSet ds = (DataSet) session["DST"];
Ds. Tables[0]. rows[e.item.itemindex]["IMAGEURL"] = ((TextBox) E.item.findcontrol ("TextBox2")). Text.tostring ();
Ds. Tables[0]. rows[e.item.itemindex]["NAVIGATEURL"] = ((TextBox) E.item.findcontrol ("TextBox5")). Text.tostring ();
Ds. Tables[0]. rows[e.item.itemindex]["AlternateText"] = ((TextBox) E.item.findcontrol ("TextBox1")). Text.tostring ();
Ds. Tables[0]. rows[e.item.itemindex]["Keyword"] = ((TextBox) E.item.findcontrol ("TextBox3")). Text.tostring ();
Ds. Tables[0]. rows[e.item.itemindex]["Impressions"] = ((TextBox) E.item.findcontrol ("TextBox4")). Text.tostring ();

session["DST"] = ds;
Ds. WRITEXML (Server.MapPath ("~/app_data/ad.xml"));

        Datalist1.edititemindex=-1;
        Fill ();
   }
    protected void Datalist1_cancelcommand (object source, DataListCommandEventArgs e)
     {
        datalist1.edititemindex =-1;
        Fill ();
   }
    protected void Datalist1_deletecommand (object source, DataListCommandEventArgs e)
     {
        DataSet ds = (DataSet) session["DST"];
        ds. Tables[0]. Rows.remove (ds. Tables[0]. Rows[e.item.itemindex]);
        session["DST"] = ds;
        ds. WRITEXML (Server.MapPath ("~/app_data/ad.xml"));

Fill ();
}
protected void Button5_click (object sender, EventArgs e)
{
DataSet ds = (DataSet) session["DST"];
DataRow dr = ds. Tables[0]. NewRow ();

dr["ImageUrl"] = URL. Text.tostring ();
dr["NAVIGATEURL"] = ng. Text.tostring ();
dr["AlternateText"] = na. Text.tostring ();
dr["Keyword"] = kw. Text.tostring ();
dr["Impressions"] = QZ. Text.tostring ();

Ds. Tables[0]. Rows.Add (DR);
session["DST"] = ds;

Ds. WRITEXML (Server.MapPath ("~/app_data/ad.xml"));
Fill ();
DIV1. Visible = false;
Panel1.visible = false;
}
protected void Button7_click (object sender, EventArgs e)
{
Panel1.visible = true;
Na. Focus ();
}
protected void LinkButton1_Click (object sender, EventArgs e)
{
DIV1. Visible = true;
Ng. Focus ();
}
protected void Button6_click (object sender, EventArgs e)
{
String name = Fu. Filename.tostring ();
int size = Convert.ToInt32 (fu. Postedfile.contentlength);
String type1 = Fu. PostedFile.ContentType.ToString ();
String type = Type1. Substring (0, 5);

        if (type = = "image")
        {
            Fu. Postedfile.saveas (Server.MapPath ("~/img/") + name);
            img. IMAGEURL = Server.MapPath ("~/img/") + name;
            URL. Text = Server.MapPath ("~/img/") + name;
       }
        Else
        {
             URL. Text = "not allowed type";
       }
   }
    protected void Button8_click (object sender, EventArgs e)
    {
         Response.Redirect ("default2.aspx");
   }
}

----------------------------------------------

Content of Ad.xml:

<?xml version= "1.0" standalone= "yes"?>
<Advertisements>
<Ad>
<ImageUrl>~/img/logo.gif</ImageUrl>
<NavigateUrl>http://www.hc115.com</NavigateUrl>
<AlternateText> Hongcheon Pharmaceutical </AlternateText>
<Keyword> Hospital Evaluation </Keyword>
<Impressions>50</Impressions>
</Ad>
<Ad>
<ImageUrl>http://www.baidu.com/img/baidu_logo_rw_0808_hzl.gif</ImageUrl>
<NavigateUrl>http://www.baidu.com</NavigateUrl>
<AlternateText> Baidu </AlternateText>
<Keyword> Baidu </Keyword>
<Impressions>60</Impressions>
</Ad>
<Ad>
<ImageUrl>F:\wuwenjie\net8\img\iask.gif</ImageUrl>
<NavigateUrl>http://www.iask.com</NavigateUrl>
<AlternateText> Love Q </AlternateText>
<Keyword> Love Search </Keyword>
<Impressions>30</Impressions>
</Ad>
</Advertisements>

Net8:xml read-write operation "XML file instance of AD control"