Search as You Type in GridViewComboBoxColumn

[Igor.Antohin]

Hello.

How to make GridViewComboBoxColumn search by DisplayMemberPath?

ItemsSource - Dictionary<Guid, string>

While searching :System.InvalidCastException Message=Invalid cast from "System.String" to "System.Guid". 

ItemsSource="{Binding Directions}"
DataMemberBinding="{Binding Direction}" 
SelectedValueMemberPath="Key"
DisplayMemberPath="Value"

IsLightweightModeEnabled="True" doesn't help 

Code in attach.