Set PropertyName for TextFilterDescriptor nested property

[Yurii]

Good afternoon, I would like to know if it is possible to use nested properties in DataGrid FilterDescriptors, as my attempts do not result in the expected behavior. Here is the sample code I am using:

<telerik:RadDataGrid x:Name="dataGrid">
   <telerik:RadDataGrid.Columns>
      <telerik:DataGridTextColumn HeaderText="Property" "PropertyName="Property.NestedProperty" />
   </telerik:RadDataGrid.Columns>
   <telerik:RadDataGrid.FilterDescriptors>
      <telerik:TextFilterDescriptor PropertyName="Property.NestedProperty" Operator="EqualsTo" Value="Value" />
   </telerik:RadDataGrid.FilterDescriptors>
</telerik:RadDataGrid>

[Martin Ivanov]

Hi Yurii,

The TextFilterDescriptor  doesn't support nested properties, but you can use the NestedTextFilterDescriptor  and its ItemPropertyGetter property. For example:

 var filterDescriptor = new NestedPropertyTextFilterDescriptor();
 filterDescriptor.PropertyName = "Property";
 filterDescriptor.Operator = Telerik.Maui.Controls.Compatibility.Common.Data.TextOperator.EqualsTo;
 filterDescriptor.Value = "Value";
 filterDescriptor.ItemPropertyGetter = (x) =>
 {
     return ((ChildObject)x).NestedProperty;
 };
 dataGrid.FilterDescriptors.Add(filterDescriptor);

 

Basically, you can assign the root property name as PropertyName of the descriptor and then in the property getter function, you will get this object. You can use it to fetch the needed nested property.

I also attached a sample project showing this. I hope it helps.

Regards,
Martin Ivanov
Progress Telerik