Radgridview's filter icon and data doesn't get updated programmatically

[Naresh Kapse]

Hi,

When I set the filters on the RadGridView programmatic-ally, the icon of the filtered column doesn't update itself. (Even the filtered column doesn't show the filtered data).

In the following code,        

The "Country" column get filtered but will not update the icon. The filter pop-up doesn't contain the filtered data.

Is there any way, how we could achieve this.

using System.Windows.Controls;

using Telerik.Windows.Controls;

using Telerik.Windows.Data;

namespace Ticket226810

{

public partial class Page : UserControl

{

public Page()

{

InitializeComponent();

playersGrid.ItemsSource = Club.GetPlayers();  //some data is assigned to the grid

}

void OnEnglishOnlyUnchecked(object sender, System.Windows.RoutedEventArgs e)

{

this.playersGrid.FilterDescriptors.Clear();

}

void OnEnglishOnlyChecked(object sender, System.Windows.RoutedEventArgs e)

{             // The "Country" column get filtered but will not update the icon. The filter pop-up doesn't contain the filtered data.

this.playersGrid.FilterDescriptors.Add(new FilterDescriptor("Country", FilterOperator.IsEqualTo, "England"));

}

}

}

Thanks,
Kapser.

[Rossen Hristov]

Hi Naresh Kapse,

There is a way to do this. Let me explain.

The way you have done it does not work because RadGridView cannot detect which column exactly do you want to filter. There may be many columns that are bound to the same field.

In case you want to filter the grid as though you are filtering it from the UI, you will have to add a special descendant of the FilterDescriptor class called ColumnFilterDescriptor. This class is the same as FilterDescriptor but it knows which column to filter and the grid will respect it.

I have prepared an extensive tutorial on how to do this here.

Let me know if there are problems or questions.

All the best,
Ross
the Telerik team

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[Naresh Kapse]

Hey Ross,

Thanks for the solution. It worked.