如何让DataGrid自动生成序号

答案：在DataGrid的第一列自动生成序号，如下图：

    代码实现： 
前台（WebForm1.aspx）： 
<asp:DataGrid id="grdCustomer" style="Z-INDEX: 102; LEFT: 30px; POSITION: absolute; TOP: 152px" runat="server" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" BackColor="White" CellPadding="3" Font-Size="X-Small" AutoGenerateColumns="False"> 
<SelectedItemStyle Font-Bold="True" ForeColor="White" BackColor="#669999"> 
</SelectedItemStyle> 
<AlternatingItemStyle BackColor="#FFF2F2"></AlternatingItemStyle> 
<ItemStyle ForeColor="#000066" BackColor="#FAFFF9"></ItemStyle> 
<HeaderStyle Font-Bold="True" ForeColor="White" BackColor="#006699"></HeaderStyle> 
<FooterStyle ForeColor="#000066" BackColor="White"></FooterStyle> 
<Columns> 
<asp:TemplateColumn HeaderText="序号"> 
<ItemTemplate> 
<asp:label id="lable1" runat=server><%#GetCount()%></asp:label> 
</ItemTemplate> 
</asp:TemplateColumn> 
<asp:BoundColumn DataField="CustomerID" HeaderText="客户ID"></asp:BoundColumn> 
<asp:BoundColumn DataField="CompanyName" HeaderText="公司名称"></asp:BoundColumn> 
<asp:BoundColumn DataField="City" HeaderText="城市"></asp:BoundColumn> 
<asp:BoundColumn DataField="Address" HeaderText="地址"></asp:BoundColumn> 
</Columns> 
</asp:DataGrid> 
 
 
后台（WebForm1.aspx.cs）： 
int count; 
private void Page_Load(object sender, System.EventArgs e) 
{ 
     if(!IsPostBack) 
     { 
SqlConnection cnn = new SqlConnection(); 
cnn.ConnectionString = "data source=localhost;initial catalog=Northwind;password=;" 
         +"persist security info=True;user id=sa;workstation id=APJ062;packet size=4096"; 
          string sqlstr = "select Top 10 CustomerID, CompanyName, City, Address from Customers"; 
         cnn.Open(); 
         SqlDataAdapter ad = new SqlDataAdapter(sqlstr,cnn); 
         DataTable dt = new DataTable(); 
         ad.Fill(dt); 
grdCustomer.DataSource = dt; 
         grdCustomer.DataBind(); 
     } 
//自动记数函数，在前台调用 
public int GetCount() 
{ 
     return ++count ; 
} 

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