号 |
内容 |
1 |
Taye |
2 |
BOx |
3 |
Glass |
4 |
StarCraft |
一、正序
A、AllowPaging=False情况下,使用以下方法就可以实现:
1<asp:DataGrid id="DataGrid1" runat="server">
2 <Columns>
3 <asp:TemplateColumn>
4 <ItemTemplate>
5 <%# Container.ItemIndex + 1%>
6 </ItemTemplate>
7 </asp:TemplateColumn>
8 </Columns>
9 </asp:DataGrid>
2 <Columns>
3 <asp:TemplateColumn>
4 <ItemTemplate>
5 <%# Container.ItemIndex + 1%>
6 </ItemTemplate>
7 </asp:TemplateColumn>
8 </Columns>
9 </asp:DataGrid>
不过更有趣的方法是使用这个方法:
1<asp:DataGrid id="DataGrid1" runat="server">
2 <Columns>
3 <asp:TemplateColumn>
4 <ItemTemplate>
5 <%# this.DataGrid1.Items.Count + 1%>
6 </ItemTemplate>
7 </asp:TemplateColumn>
8 </Columns>
9</asp:DataGrid>
2 <Columns>
3 <asp:TemplateColumn>
4 <ItemTemplate>
5 <%# this.DataGrid1.Items.Count + 1%>
6 </ItemTemplate>
7 </asp:TemplateColumn>
8 </Columns>
9</asp:DataGrid>
也许有些人会觉得很奇怪为什么Items.Count会这样,而不是出来全部总合,但如果你了解绑定的过程时就容易理解。[从上面来看就是在ItemCreated事件中进行绑定所以得到的Items.Count刚好是当前的序号]
B、AllowPaging="True"下,如果DataGrid支持分页则可以如下:
1<asp:DataGrid id="DataGrid1" runat="server" AllowPaging="True">
2 <Columns>
3 <asp:TemplateColumn>
4 <ItemTemplate>
5 <%# this.DataGrid1.CurrentPageIndex * this.DataGrid1.PageSize + Container.ItemIndex + 1%>
6 </ItemTemplate>
7 </asp:TemplateColumn>
8 </Columns>
9</asp:DataGrid>
2 <Columns>
3 <asp:TemplateColumn>
4 <ItemTemplate>
5 <%# this.DataGrid1.CurrentPageIndex * this.DataGrid1.PageSize + Container.ItemIndex + 1%>
6 </ItemTemplate>
7 </asp:TemplateColumn>
8 </Columns>
9</asp:DataGrid>
二、倒序的方法
序号 |
内容 |
4 |
Taye |
3 |
BOx |
2 |
Glass |
1 |
StarCraft |
由上面可以知道使用this.DataGrid1.Items.Count - Container.ItemIndex + 1方法是不可能实现的,得到值而且全会为1,分页的情况下更是一样.所以一开始我们就要取得数据源的行数:
1private int rowscount = 0;
2 protected int RowsCount
3 {
4 get{ return rowscount;}
5 set{ this.rowscount = value; }
6 }
7
8 private void Page_Load(object sender, System.EventArgs e)
9 {
10 // 在此处放置用户代码以初始化页面
11 if(!IsPostBack)
12 this.BindData();
13 }
14 private void BindData()
15 {
16 SqlConnection cn = new SqlConnection("server=(local);database=NorthWind;uid=sa;pwd=");
17 string str=@"SELECT Employees.EmployeeID, Orders.EmployeeID
18 FROM Employees INNER JOIN
19 Orders ON Employees.EmployeeID = Orders.EmployeeID ";
20 SqlDataAdapter sqlda = new SqlDataAdapter(str,cn);
21 DataSet ds = new DataSet();
22 sqlda.Fill(ds);
23 this.RowsCount = ds.Tables[0].Rows.Count;
24 this.DataGrid1.DataSource = ds;
25 this.DataGrid1.DataBind();
26}
2 protected int RowsCount
3 {
4 get{ return rowscount;}
5 set{ this.rowscount = value; }
6 }
7
8 private void Page_Load(object sender, System.EventArgs e)
9 {
10 // 在此处放置用户代码以初始化页面
11 if(!IsPostBack)
12 this.BindData();
13 }
14 private void BindData()
15 {
16 SqlConnection cn = new SqlConnection("server=(local);database=NorthWind;uid=sa;pwd=");
17 string str=@"SELECT Employees.EmployeeID, Orders.EmployeeID
18 FROM Employees INNER JOIN
19 Orders ON Employees.EmployeeID = Orders.EmployeeID ";
20 SqlDataAdapter sqlda = new SqlDataAdapter(str,cn);
21 DataSet ds = new DataSet();
22 sqlda.Fill(ds);
23 this.RowsCount = ds.Tables[0].Rows.Count;
24 this.DataGrid1.DataSource = ds;
25 this.DataGrid1.DataBind();
26}
1<asp:DataGrid id="DataGrid1" runat="server" AllowPaging="True">
2 <Columns>
3 <asp:TemplateColumn>
4 <ItemTemplate>
5 <%# RowsCount - DataGrid1.CurrentPageIndex * DataGrid1.PageSize - Container.ItemIndex %>
6 </ItemTemplate>
7 </asp:TemplateColumn>
8 </Columns>
9 </asp:DataGrid>
2 <Columns>
3 <asp:TemplateColumn>
4 <ItemTemplate>
5 <%# RowsCount - DataGrid1.CurrentPageIndex * DataGrid1.PageSize - Container.ItemIndex %>
6 </ItemTemplate>
7 </asp:TemplateColumn>
8 </Columns>
9 </asp:DataGrid>
coolly
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