[Solved] Custom sort/filter function

[Spam Basura]

Hi all, i have an issue related with the automatic sort/filter capabilities of the RadGridView control.

The problem is that i'm using a very complex type as the ItemSource of the grid... basically is a generic representation of a table as Dictionay<int, Dictionary<string, object>>, where "int" represents the index of the row, and then a dictionary to save the values of the columns indexed by the column name.

The data displays correctly using a conversor, but fails when ordering or filtering.

The question: Is possible to define a custom sort/filter function as a Conversor in the RadGridView, to resolve this?.

Any suggestion?.

Thx.

[Rossen Hristov]

Hello Spam Basura,

You can implement custom sorting by attaching to the Sorting event like demonstrated in this online example.

For custom filtering, you can create your own Custom Filtering Control as demonstrated in this online example. For a step-by-step tutorial please read my blog post Custom Filtering with RadGridView for Silverlight.

The main point for both is that you should be creating, adding and removing the appropriate descriptors to the FilterDescriptors and SortDescriptors collections. It is up to you to what they will contain.

I hope this helps.

Regards,
Ross
the Telerik team

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[Spam Basura]

Thank you Mr. Telerik, I have especified the Sorting event as follows and is working correctly:

        /// <summary>
        /// Manejador de la ordenación del grid de datos
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void f_rgv_GridDatos_Sorting(object sender, Telerik.Windows.Controls.GridViewSortingEventArgs e)
        {
            //Evitar la ordenación automática
            e.Cancel = true;

            //Definir la ordenación para la propiedad especificada
            using (f_rgv_GridDatos.DeferRefresh())
            {
                f_rgv_GridDatos.SortDescriptors.Clear();

                if (e.NewSortingState != Telerik.Windows.Controls.SortingState.None)
                {
                    //Definir la ordenación para el campo especificado (cada valor es del tipo KeyPairValue)
                    f_rgv_GridDatos.SortDescriptors.Add(new Telerik.Windows.Data.SortDescriptor
                    {
                        Member = "Value['" + e.SortPropertyName + "']",
                        SortDirection = (e.NewSortingState == Telerik.Windows.Controls.SortingState.Ascending) ? System.ComponentModel.ListSortDirection.Ascending : System.ComponentModel.ListSortDirection.Descending
                    });
                }
            }
        }

Hope this helps other people