The GridViewComboBox column is used to display lookup data in user friendly manner. For our demo we bind RadGridView for WPF to a collection of custom Location objects.

As you may notice – each location has a selectable Country field.  Here is the underlying ‘data model’:

public class Location {  public int CountryID { get; set; }  public string CityName { get; set; } } public class Country {  public int ID { get; set; }  public string Name { get; set; } }  

The location object contains the integer CountryID. Each CountryID corresponds to a certain country and with the help of GridViewComboBoxColumn we see some human readable country names instead of the underlying numeric IDs.

Now The Problem:

Unfortunately the filter control does not know that our Country IDs are associated with Country objects, so it displays the ...

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