Gridview sorting: SortDirection always Ascending
- by Julien N
Hi !
I have a gridview and I need to sort its elements when the user clicks on the header.
Its datasource is a List object.
The aspx is defined this way :
<asp:GridView ID="grdHeader" AllowSorting="true" AllowPaging="false"
AutoGenerateColumns="false" Width="780" runat="server" OnSorting="grdHeader_OnSorting" EnableViewState="true">
<Columns>
<asp:BoundField DataField="Entitycode" HeaderText="Entity" SortExpression="Entitycode" />
<asp:BoundField DataField="Statusname" HeaderText="Status" SortExpression="Statusname" />
<asp:BoundField DataField="Username" HeaderText="User" SortExpression="Username" />
</Columns>
</asp:GridView>
The code behind is defined this way :
First load :
protected void btnSearch_Click(object sender, EventArgs e)
{
List<V_ReportPeriodStatusEntity> items = GetPeriodStatusesForScreenSelection();
this.grdHeader.DataSource = items;
this.grdHeader.DataBind();
}
when the user clicks on headers :
protected void grdHeader_OnSorting(object sender, GridViewSortEventArgs e)
{
List<V_ReportPeriodStatusEntity> items = GetPeriodStatusesForScreenSelection();
items.Sort(new Helpers.GenericComparer<V_ReportPeriodStatusEntity>(e.SortExpression, e.SortDirection));
grdHeader.DataSource = items;
grdHeader.DataBind();
}
My problem is that e.SortDirection is always set to Ascending.
I have webpage with a similar code and it works well, e.SortDirection alternates between Ascending and Descending.
What did I do wrong ?
