Expand|Select|Wrap|Line Numbers
- <%@ Page language="C#" %>
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
- "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <script runat="server">
- void SortButton_Click(Object sender, EventArgs e)
- {
- String expression = "";
- SortDirection direction;
- // Create the sort expression from the values selected
- // by the user from the DropDownList controls. Multiple
- // columns can be sorted by creating a sort expression
- // that contains a comma-separated list of field names.
- expression = SortList1.SelectedValue + "," + SortList2.SelectedValue;
- // Determine the sort direction. The sort direction
- // applies only to the second column sorted.
- switch (DirectionList.SelectedValue)
- {
- case "Ascending":
- direction = SortDirection.Ascending;
- break;
- case "Descending":
- direction = SortDirection.Descending;
- break;
- default:
- direction = SortDirection.Ascending;
- break;
- }
- // Use the Sort method to programmatically sort the GridView
- // control using the sort expression and direction.
- CustomersGridView.Sort(expression, direction);
- }
- </script>
- <html >
- <head runat="server">
- <title>GridView Sort Example</title>
- </head>
- <body>
- <form id="form1" runat="server">
- <h3>GridView Sort Example</h3>
- <table>
- <tr>
- <td>
- Sort by:
- <asp:dropdownlist ID="SortList1"
- runat="server">
- <asp:listitem Selected="true">CustomerID</asp:listitem>
- <asp:listitem>CompanyName</asp:listitem>
- <asp:listitem>Address</asp:listitem>
- <asp:listitem>City</asp:listitem>
- <asp:listitem>PostalCode</asp:listitem>
- <asp:listitem>Country</asp:listitem>
- </asp:dropdownlist>
- </td>
- <td colspan="2">
-
- </td>
- </tr>
- <tr>
- <td>
- Then by:
- <asp:dropdownlist ID="SortList2"
- runat="server">
- <asp:listitem Selected="true">CustomerID</asp:listitem>
- <asp:listitem>CompanyName</asp:listitem>
- <asp:listitem>Address</asp:listitem>
- <asp:listitem>City</asp:listitem>
- <asp:listitem>PostalCode</asp:listitem>
- <asp:listitem>Country</asp:listitem>
- </asp:dropdownlist>
- </td>
- <td>
- Sort order:
- </td>
- <td>
- <asp:radiobuttonlist id="DirectionList"
- runat="server">
- <asp:listitem selected="true">Ascending</asp:listitem>
- <asp:listitem>Descending</asp:listitem>
- </asp:radiobuttonlist>
- </td>
- </tr>
- </table>
- <asp:button id="SortButton"
- text="Sort"
- onclick="SortButton_Click"
- runat="Server"/>
- <br/>
- <hr/>
- <br/>
- <asp:gridview id="CustomersGridView"
- datasourceid="CustomersSource"
- autogeneratecolumns="true"
- emptydatatext="No data available."
- allowpaging="true"
- runat="server">
- </asp:gridview>
- <!-- This example uses Microsoft SQL Server and connects -->
- <!-- to the Northwind sample database. Use an ASP.NET -->
- <!-- expression to retrieve the connection string value -->
- <!-- from the Web.config file. -->
- <asp:sqldatasource id="CustomersSource"
- selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
- connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
- runat="server"/>
- </form>
- </body>
- </html>