XML、DataSet、DataGrid结合写成广告管理程序(下)(转载)


答案：作者：http://www.aspcn.com 飞刀

上一节中，由于XML文件占了很大的篇幅，只好把源程序贴在这一页了。

也是很长的哟，大家有性子看才行：）

　 

<% @ Page Language="C#" ResponseEncoding="gb2312" %>
<% @ Import Namespace="System.Data" %>
<% @ Import Namespace="System.Xml" %>
<% @ Import Namespace="System.IO" %>
<Script Language="C#" Runat="Server">
DataSet ds;        //定义公用的DataSet
DataView dv;    //定义公用的DataView
string SortField;
string sPath;
public void Page_Load(Object src,EventArgs e)
{
    if(State["adxml"]==null)
    {
        sPath = Server.MapPath(".") + "\\AdBanners\\ad_gb.xml";
        ds = new DataSet();
        ds.ReadXml(sPath);
        State["adxml"] = ds;
    }
    else
    {
        ds = (DataSet)State["adxml"];
    }
    dv = ds.Tables[0].DefaultView;
    dv.Sort = "ImageUrl";

    if(!Page.IsPostBack)
    {
        CreateTable();
    }
}

//捆绑Binder
public void CreateTable()
{

    dgXML.DataSource = dv;
    dgXML.DataBind();
}

//翻页时
public void dgXML_Changed(Object sender,DataGridPageChangedEventArgs e)
{
    CreateTable();
}

//删除
public void DelItem(Object sender,DataGridCommandEventArgs e)
{
    if(((LinkButton)e.CommandSource).CommandName == "del") 
    {
        //首先取得当前更新页的行数与CurrentPageIndex
        int CPI = (int)dgXML.CurrentPageIndex;
        int EII = (int)e.Item.ItemIndex;
        int row = CPI*5+EII;    

        lb.Text = row.ToString();
    
        //删除
        dv.Delete(row);
    
        dgXML.EditItemIndex = -1;
        ds.WriteXml(sPath);
    
        CreateTable();
    }
}

//取消
public void dgXML_Cancel(Object sender,DataGridCommandEventArgs e)
{
    dgXML.EditItemIndex = -1;
    CreateTable();
}

//编辑
public void dgXML_Edit(Object sender,DataGridCommandEventArgs e)
{
    dgXML.EditItemIndex = (int)e.Item.ItemIndex;
    CreateTable();
}

//更新
public void dgXML_Update(Object sender, DataGridCommandEventArgs e)
{
    try
    {
        //首先取得当前更新页的行数与CurrentPageIndex
        int CPI = (int)dgXML.CurrentPageIndex;
        int EII = (int)e.Item.ItemIndex;
        int row = CPI*5+EII;
        //lb.Text = row.ToString();

        //取得各项值
        
        string ImageUrl            = ((TextBox)e.Item.Cells[2].Controls[0]).Text;
        string NavigateUrl        = ((TextBox)e.Item.Cells[3].Controls[0]).Text; 
        string AlternateText    = ((TextBox)e.Item.Cells[4].Controls[0]).Text;
        string Keyword            = ((TextBox)e.Item.Cells[5].Controls[0]).Text;
        string Impressions        = ((TextBox)e.Item.Cells[6].Controls[0]).Text;
        
        dv.Delete(row);

        
        DataRow dr = ds.Tables[0].NewRow();
        dr[0]    =    ImageUrl;
        dr[1]    =    NavigateUrl;
        dr[2]    =    AlternateText;
        dr[3]    =    Keyword;
        dr[4]    =    Impressions;
        ds.Tables[0].Rows.Add(dr);
        ds.WriteXml(sPath);
    }
    catch(Exception ee)
    {
        lb.Text = ee.ToString();
    }

    dgXML.EditItemIndex = -1;
    CreateTable();


}

public void PanelShow(Object sender,EventArgs e)
{
    AddItem.Visible = true;
}

public void AddItem_Click(Object sender,EventArgs e)
{
    DataRow dr = ds.Tables[0].NewRow();
    dr[0]    =    mUrl.Text;
    dr[1]    =    aUrl.Text;
    dr[2]    =    mText.Text;
    dr[3]    =    aKey.Text;
    dr[4]    =    aTime.Text;
    ds.Tables[0].Rows.Add(dr);
    ds.WriteXml(sPath);
    CreateTable();
    AddItem.Visible=false;
}
</script>
<html>
<head>
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:DataGrid id="dgXML" runat="server"
AllowPaging="True"
PageSize="10"
BorderColor="black"
BorderWidth="1"
CellPadding="3"
Font-Name="Verdana"
Font-Size="8pt"
HeaderStyle-BackColor="#aaaadd"
PagerStyle-Mode="NumericPages"
PagerStyle-HorizontalAlign="Right"
PagerStyle-PrevPageText="前页"
PagerStyle-NextPageText="后页"
OnPageIndexChanged="dgXML_Changed"
OnEditCommand="dgXML_Edit"
OnCanc
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