How to set filter operator

[Lilia]

Can you tell me how can I set a default filter operator (for example "Is equal to") when I add a new filter criteria and I change the members drop down?

[Maya]

Hello Lilia,

Please take a look at this forum thread. Does the solution suggested there corresponds to your requirements ?
 

Best wishes,
Maya
the Telerik team

[Lilia]

Can you give me an example with RadDataFilter. I have this in xaml:

<telerik:RadDataFilter x:Name="dataFilterSearchCriteria"
                        EditorTemplateSelector="{StaticResource EditorTemplateSelector}"
                        AutoGenerateItemPropertyDefinitions="False"
                        CanUserCreateCompositeFilters="False"
                        Margin="0,0,0,0"
                        Canvas.ZIndex="1">
    <telerik:RadDataFilter.ItemPropertyDefinitions>
        <my:ItemPropertyDefinition DisplayName="Franchise name selector"
                                    PropertyName="Name"
                                    PropertyType="{Binding Source={StaticResource types}, Path=String}" />
        <my:ItemPropertyDefinition DisplayName="Date From"
                                    PropertyName="DateFrom"
                                    PropertyType="{Binding Source={StaticResource types}, Path=DateTime}" />
        <my:ItemPropertyDefinition DisplayName="Date To"
                                    PropertyName="DateTo"
                                    PropertyType="{Binding Source={StaticResource types}, Path=DateTime}" />
    </telerik:RadDataFilter.ItemPropertyDefinitions>
</telerik:RadDataFilter>

And I've tried to do this in "FilterOperatorsLoading" event, but it didn't do nothing:

var comboBox = ((RadDataFilter)e.TriggerSource).ChildrenOfType<RadComboBox>()
                .Where(b => b.Name == "PART_SimpleFilterOperatorComboBox")
               .FirstOrDefault();
if (comboBox != null)
{
     comboBox.SelectedIndex = 0;
}

[Lilia]

I found my mistake. The problem was that I wasn't selecting the right ComboBox. Here is the right code:

var comboBox = ((RadDataFilter)e.TriggerSource).ChildrenOfType<RadComboBox>()
                           .Where(b => b.Name == "PART_SimpleFilterOperatorComboBox")
                           .LastOrDefault();
if (comboBox != null)
{
   comboBox.SelectedIndex = 0;
}

I replaces FirstOrDefault with LastOrDefault to select the last added ComboBox.

[Rossen Hristov]

Hi Lilia,

Can you please answer the question that my colleague asked in your other thread first.

Thank you.

Kind regards,
Ross
the Telerik team