GridView使用XmlDataSource控件来操作Xml数据的更新
前台代码：
<div style="float:left">
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
BackColor="#DEBA84" BorderColor="#DEBA84" BorderStyle="None" BorderWidth="1px"
CellPadding="3" CellSpacing="2" DataSourceID="XmlDataSource1" Height="223px"
onrowupdating="GridView1_RowUpdating" Width="561px">
<FooterStyle BackColor="#F7DFB5" ForeColor="#8C4510" />
<RowStyle BackColor="#FFF7E7" ForeColor="#8C4510" />
<Columns>
<asp:BoundField DataField="title" HeaderText="title" SortExpression="title" />
<asp:BoundField DataField="img" HeaderText="img" SortExpression="img" />
<asp:BoundField DataField="url" HeaderText="url" SortExpression="url" />
<asp:BoundField DataField="target" HeaderText="target"
SortExpression="target" />
<asp:CommandField ShowSelectButton="True" />
<asp:CommandField ShowEditButton="True" />
</Columns>
<PagerStyle ForeColor="#8C4510" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#A55129" Font-Bold="True" ForeColor="White" />
</asp:GridView>
<asp:XmlDataSource ID="XmlDataSource1" runat="server"
DataFile="~/viewerData.xml"></asp:XmlDataSource>
</div>
<div style="float:left;">
<asp:Button ID="btnRefresh" Text="更新" runat="server"
onclick="btnRefresh_Click" />
</div>
后台代码：
public partial class _Default : System.Web.UI.Page
{
DataSet ds = new DataSet();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
DataLoad();
}
}
private void DataLoad()
{
GridView1.DataSourceID = "XmlDataSource1";
GridView1.DataBind();
}
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
string strTitle = ((TextBox)GridView1.Rows[e.RowIndex].Cells[0].Controls[0]).Text.ToString();
string strImgPath = ((TextBox)GridView1.Rows[e.RowIndex].Cells[1].Controls[0]).Text.ToString();
string strUrl = ((TextBox)GridView1.Rows[e.RowIndex].Cells[2].Controls[0]).Text.ToString();
string strTarget = ((TextBox)GridView1.Rows[e.RowIndex].Cells[3].Controls[0]).Text.ToString();
GridViewRow gvr=GridView1.Rows[e.RowIndex];
string filepath = Server.MapPath("viewerData.xml");
ds.ReadXml(filepath);
DataRow dr = ds.Tables[1].Rows[gvr.DataItemIndex];
dr[0] = strTitle;
dr[1] = strImgPath;
dr[2] = strUrl;
dr[3] = strTarget;
ds.WriteXml(filepath);
GridView1.DataSourceID = "XmlDataSource1";
GridView1.DataBind();
e.Cancel = true;//表示取消使用GridView的缺省的数据更新操作
GridView1.EditIndex = -1;//要退出编辑模式，把GridView对象的当前编辑行设成-1
//GridView会自动设法调用XmlDataSource的update方法（通过IDataSourceConrol/DataSourceView接口），但是XmlDataSource不支持自动更新
}
protected void btnRefresh_Click(object sender, EventArgs e)
{
DataLoad();
}
}
