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答案： 我们再来看看ASP.net的源代码：
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; file://定义公用的DataSet
DataView dv; file://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();
}
}
file://捆绑Binder
public void CreateTable()
{
dgXML.DataSource = dv;
dgXML.DataBind();
}
file://翻页时
public void dgXML_Changed(Object sender,DataGridPageChangedEventArgs e)
{
CreateTable();
}
file://删除
public void DelItem(Object sender,DataGridCommandEventArgs e)
{
if(((LinkButton)e.CommandSource).CommandName == "del")
{
file://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();
file://删除
dv.Delete(row);
dgXML.EditItemIndex = -1;
ds.WriteXml(sPath);
CreateTable();
}
}
file://取消
public void dgXML_Cancel(Object sender,DataGridCommandEventArgs e)
{
dgXML.EditItemIndex = -1;
CreateTable();
}
file://编辑
public void dgXML_Edit(Object sender,DataGridCommandEventArgs e)
{
dgXML.EditItemIndex = (int)e.Item.ItemIndex;
CreateTable();
}
file://更新
public void dgXML_Update(Object sender, DataGridCommandEventArgs e)
{
try
{
file://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;
file://lb.Text = row.ToString();
file://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"
OnCancelCommand="dgXML_Cancel"
OnUpdateCommand="dgXML_Update"
OnItemCommand="DelItem"
AutoGenerateColumns="false"
＞
＜property name="Columns"＞
＜asp:ButtonColumn HeaderText="删除" Text="删除" CommandName="del" /＞
＜asp:EditCommandColumn EditText="修改" CancelText="取消" UpdateText="更新" ItemStyle-Wrap="false"
HeaderText="操作区" HeaderStyle-Wrap="false" /＞
＜asp:BoundColumn HeaderText="图片地址(相对)" SortField="ImageUrl" DataField="ImageUrl" /＞
＜asp:BoundColumn HeaderText="链接URL" SortField="NavigateUrl" DataField="NavigateUrl" /＞
＜asp:BoundColumn HeaderText="图片说明" SortField="AlternateText" DataField="AlternateText" /＞
＜asp:BoundColumn HeaderText="类别" SortField="Keyword" DataField="Keyword" /＞
＜asp:BoundColumn HeaderText="显示时间" SortField="Impressions" DataField="Impressions" /＞
＜/property＞
＜/asp:DataGrid＞
＜hr＞
＜asp:Button id="vi" Text="添加新项" OnClick="PanelShow" runat="server"/＞
＜br＞
＜asp:Panel id="AddItem" runat="server" Visible="false"＞
＜table＞
＜tr Bgcolor="#aaaadd"＞＜td colspan=2＞添加新的广告页面＜/td＞＜/tr＞
＜tr＞
＜td＞广告图片URL:＜/td＞
＜td＞＜asp:TextBox id="mUrl" runat="server" Text="http://" /＞＜/td＞
＜/tr＞
＜tr＞
＜td＞广告链接地址:＜/td＞
＜td＞＜asp:TextBox id
