Пожалуйста, обработайте событие OnSorting
<asp:GridView ID="gidtest" runat="server" AutoGenerateColumns="False" BackColor="White"
BorderColor="#CC9966" BorderStyle="None" BorderWidth="1px" CellPadding="4" Width="100%"
AllowPaging="True" **AllowSorting="True"**
OnPageIndexChanging="gidtest_PageIndexChanging" OnSorting="gidtest_Sorting"
>
<Columns>
<asp:BoundField DataField="MinistryName" HeaderText="Name" SortExpression="Ministry Name"
ItemStyle-Width="40%" >
<ItemStyle Width="40%"></ItemStyle>
</asp:BoundField>
</Columns>
<FooterStyle BackColor="#FFFFCC" ForeColor="#330099" />
<HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="#FFFFCC" />
<PagerStyle BackColor="#FFFFCC" ForeColor="#330099" HorizontalAlign="Center" />
<PagerSettings FirstPageText="first" LastPageText="last" Mode="NumericFirstLast" PageButtonCount="2"/>
<RowStyle BackColor="White" ForeColor="#330099" />
<SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="#663399" />
<SortedAscendingCellStyle BackColor="#FEFCEB" />
<SortedAscendingHeaderStyle BackColor="#AF0101" />
<SortedDescendingCellStyle BackColor="#F6F0C0" />
<SortedDescendingHeaderStyle BackColor="#7E0000" />
</asp:GridView>
protected void gidtest_Sorting(object sender, GridViewSortEventArgs e)
{
try
{
//Retrieve the table from the session object.
DataTable dt = GetData();
if (dt != null)
{
//Sort the data.
dt.DefaultView.Sort = e.SortExpression + " " + **GetSortDirection**(e.SortExpression);
gidtest.DataSource = dt;
gidtest.DataBind();
}
}
catch (Exception ex)
{
throw ex;
}
}
private string GetSortDirection(string column)
{
// By default, set the sort direction to ascending.
string sortDirection = "ASC";
// Retrieve the last column that was sorted.
string sortExpression = ViewState["SortExpression"] as string;
if (sortExpression != null)
{
// Check if the same column is being sorted.
// Otherwise, the default value can be returned.
if (sortExpression == column)
{
string lastDirection = ViewState["SortDirection"] as string;
if ((lastDirection != null) && (lastDirection == "ASC"))
{
sortDirection = "DESC";
}
}
}
// Save new values in ViewState.
ViewState["SortDirection"] = sortDirection;
ViewState["SortExpression"] = column;
return sortDirection;
}