persist Datafilter

[Kamran]

I placed Datafilter on Popup window, which return FilterDescriptor. After that i add FilterDescriptor to Gridview. Up to now its working nice. If I again open popup, I want to set previous filter on Datafilter control, AS FilterDescriptor property of DataFilter is read only, kindly help me.

One other thing, I am using EditorTemplateSelector for custom input filter such as Combobox. Every time when I define EditorTemplateSelector for individual Item, it become hardcoded. I want a generic solution. DataFilter that I am using can have any collection, so its very difficult for me handle this situation. Can you send me sample solution, where i can use generic EditorTemplateSelector.

[Rossen Hristov]

Hello Kamran,

The FilterDescriptors property of RadDataFilter is read-only since it is a collection property and all collection properties are read only. You add and remove elements to a collection property, you do not assign it. So you can create a FilterDescriptor and add it to the FilterDescriptors collection of RadDataFilter. Persisting a .NET such as the FilterDescriptor is beyond the scope of our support.

As for the generic solution for your second question, I am afradi that it is not possible.

All the best,
Ross
the Telerik team

[Kamran]

Thanks for your support. I got the point, and implement this. Currently I got CompositeFilterDescriptorCollection from GridView, after that I assign this collection to RadDataFilter like
DataFilter.FilterDescriptors.Add(FilterDescriptor[0]);

But here is one issue, one extra and logical operator is added at the top of filter. Kindly find screen shot

[Rossen Hristov]

Hello Kamran,

Can you please attach a sample project with this behavior. We need to debug it in order to see what you are doing. Also, please explain what is the end-goal that you are after and we will try to modify the project if it is achievable.

Kind regards,

Ross
the Telerik team

[Kamran]

Hi Team,
   Sorry I can't share source code but i can explain scenarios, I pass gridView.FilterDescriptors to popup screen

QueueFilter(this, gridView.FilterDescriptors as FilterDescriptorCollection);

at constructor QueueFilter I set filter to RadDAtaFilter

public QueueFilter(UserControl parent, FilterDescriptorCollection Filters)

            {

            InitializeComponent();

            FilterDescriptor = Filters as CompositeFilterDescriptorCollection;          

            ItemPropertyDefinition property;

            property = new ItemPropertyDefinition("request_id", typeof(string), "RequestCode");

            RADDataFilter.ItemPropertyDefinitions.Add(property);

 

            if (FilterDescriptor.Count > 0 && !FilterDescriptor[0].ToString().Equals("Empty"))

            {

                RADDataFilter.FilterDescriptors.Clear();

               RADDataFilter.FilterDescriptors.Add(FilterDescriptor[0]);

            }

at popup return i used following code.

this.DailogReturnData = RADDataFilter.FilterDescriptors;

Grid is filtered correctly, I think when i return Filter to main screen, there is some issue. 

[Kamran]

Hi All,

Use
 RADDataFilter.FilterDescriptors.AddRange(FilterDescriptorCollection );

instead of

RADDataFilter.FilterDescriptors.Add(FilterDescriptor);