Slowness in Scrolling GridView with GridViewComboBoxColumn

[Andrew Chan]

Hi there,

I experienced a serious slowness when scrolling the vertical bar of the gridview with gridvewcomboboxcolumn.
Below is the structure of the gridview I am using.

        <telerikGrid:RadGridView Name="gridModel" ItemsSource="{Binding Models}" ScrollViewer.HorizontalScrollBarVisibility="Visible" ScrollViewer.VerticalScrollBarVisibility="Visible" CanUserDeleteRows="False" AutoGenerateColumns="False" ShowInsertRow="False" CanUserInsertRows="False" DataLoadMode="Asynchronous">
            <telerikGrid:RadGridView.Columns>
                <telerikGrid:GridViewDataColumn DataMemberBinding="{Binding Name}" />
                <telerikGrid:GridViewComboBoxColumn Header="Division" DataMemberBinding="{Binding Division.DisplayString}" DisplayMemberPath="DisplayString" SelectedValueMemberPath="DisplayString" ItemsSource="{Binding Divisions, Source={StaticResource LookupTypes}}" />
                <telerikGrid:GridViewComboBoxColumn Header="Gender" DataMemberBinding="{Binding Gender.DisplayString}" DisplayMemberPath="DisplayString" SelectedValueMemberPath="DisplayString" ItemsSource="{Binding Genders, Source={StaticResource LookupTypes}}"   />
                <telerikGrid:GridViewComboBoxColumn Header="Age" DataMemberBinding="{Binding Age.DivisionDisplayString}" DisplayMemberPath="DisplayString" SelectedValueMemberPath="DivisionDisplayString" ItemsSource="{Binding Ages, Source={StaticResource LookupTypes}}"  />
                <telerikGrid:GridViewComboBoxColumn Header="Silhouette" DataMemberBinding="{Binding Silhouette.DivisionDisplayString}" DisplayMemberPath="DisplayString" SelectedValueMemberPath="DivisionDisplayString" ItemsSource="{Binding Silhouettes, Source={StaticResource LookupTypes}}"  />
                <telerikGrid:GridViewComboBoxColumn Header="Business Organization" DataMemberBinding="{Binding BusinessOrganization.DisplayString}" DisplayMemberPath="DisplayString" SelectedValueMemberPath="DisplayString" ItemsSource="{Binding BusinessOrganizations, Source={StaticResource LookupTypes}}"  />
                <telerikGrid:GridViewComboBoxColumn Header="Consumer Purpose" DataMemberBinding="{Binding ConsumerPurpose.DisplayString}" DisplayMemberPath="DisplayString" SelectedValueMemberPath="DisplayString" ItemsSource="{Binding ConsumerPurposes, Source={StaticResource LookupTypes}}"  />
                <telerikGrid:GridViewComboBoxColumn Header="Sport Activity" DataMemberBinding="{Binding SportActivity.DivisionDisplayString}" DisplayMemberPath="DisplayString" SelectedValueMemberPath="DivisionDisplayString" ItemsSource="{Binding SportActivities, Source={StaticResource LookupTypes}}"  />
                <telerikGrid:GridViewComboBoxColumn Header="Silhouette Type" DataMemberBinding="{Binding SilhouetteType.DivisionDisplayString}" DisplayMemberPath="DisplayString" SelectedValueMemberPath="DivisionDisplayString" ItemsSource="{Binding SilhouetteTypes, Source={StaticResource LookupTypes}}"  />
            </telerikGrid:RadGridView.Columns>
        </telerikGrid:RadGridView>

I tried to change all combo box column to data column and the performace of scrolling got much faster. Any reason why the slowness happen?

Thanks.

Regards,
Andrew

[Milan]

Hi Andrew Chan,

I have send a reply on the internal support thread. 

Kind regards,
Milan
the Telerik team