Моят Telerik RadGrid няма да сортира, без значение какъв код поставям в него. Опитах много неща и всеки път, когато щракна върху заглавките, стрелката и цветът ще се променят, но данните ще останат в същия ред. Това е последната ми част от кода. (Получих това от уебсайта на Telerik) Моля, кажете ми какво правя грешно тук.
<telerik:RadGrid runat="server" ID="radProductsGrid" Skin="Default" AllowSorting="true"
AllowPaging="true" OnSortCommand="radProductsGrid_SortCommand"
OnNeedDataSource="radProductsGrid_NeedDataSource" AutoGenerateColumns= "false"
GridLines="None" ShowGroupPanel="false" PageSize="100">
<telerik:GridBoundColumn ReadOnly="true" AllowFiltering="true" SortExpression="ItemNumber" DataField="ItemNumber" HeaderText="Item Number" UniqueName="ItemNumber">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn ReadOnly="true" AllowFiltering="true" SortExpression="ProductName" DataField="ProductName" HeaderText="Product Name" UniqueName="ProductName">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn ReadOnly="true" AllowFiltering="true" SortExpression="CategoryName" DataField="CategoryName" HeaderText="Category Name" UniqueName="CategoryName">
</telerik:GridBoundColumn>
protected void radProductsGrid_SortCommand(object sender, GridSortCommandEventArgs e)
{
GridTableView tableView = e.Item.OwnerTableView;
if (e.SortExpression == "ItemNumber")
{
e.Canceled = true;
GridSortExpression expression = new GridSortExpression();
expression.FieldName = "ItemNumber";
if (tableView.SortExpressions.Count == 0 || tableView.SortExpressions[0].FieldName != "ItemNumber")
{
expression.SortOrder = GridSortOrder.Descending;
}
else if (tableView.SortExpressions[0].SortOrder == GridSortOrder.Descending)
{
expression.SortOrder = GridSortOrder.Ascending;
}
else if (tableView.SortExpressions[0].SortOrder == GridSortOrder.Ascending)
{
expression.SortOrder = GridSortOrder.None;
}
tableView.SortExpressions.AddSortExpression(expression);
tableView.Rebind();
}
}