GridViewDataColumn Filtering

[Ohad]

I have the following code:

<telerik:GridViewDataColumn DataMemberBinding="{Binding CreatedBy.Name}" Header="Name"/>
<telerik:GridViewDataColumn DataMemberBinding="{Binding EventObject.TextData}" Header="User Text"/>

public UserType CreatedBy { get; set; }

public object EventObject { get; set; }

in another class:

public string TextData { get; set; }

 

In the first column, there is a filter icon, and it filters correctly. However, in the second column, there is no filter icon. Could you explain why this might be and how to resolve the issue?

 

[Dimitar]

Hi Ohad, 

I have examined this and I am wondering why the EventObject property is of type object. Can't you use a base type that contains the TextData property? For example: 

public class EventObjectBase
{
    public string TextData { get; set; }
}
public class TestEventObject : EventObjectBase
{
    public string TextData2 { get; set; }
}

I am looking forward to your reply.

 

[Ohad]

It is of type object because EventObject may be one of many different types.

[Dimitar]

Hi Ohad,

I have examined this and it is not supported at the moment. We have a feature request that will allow this. You can track its progress, subscribe to status changes, and add your comment to it here: Add support for sorting/filtering/grouping of the additional properties that are not present for all items.

As a workaround, you can create an object that has this property and use it for the column. I have attached a small project that shows this. 

I want to apologize for the inconvenience this is causing you.

Regards,
Dimitar
Progress Telerik

[Ohad]

Okay thanks!

Can you explain to me what I need to do so that I only have an option for Contains?

I don't want the And/Or

     private void OnFilterOperatorsLoading(object sender, FilterOperatorsLoadingEventArgs e)
        {
            if (e.Column.Header.ToString() == "A")
            {
                var notWanted = new List<FilterOperator>();

                foreach (FilterOperator eAvailableOperator in e.AvailableOperators)
                {
                    if (eAvailableOperator != FilterOperator.Contains)
                    {
                        notWanted.Add(eAvailableOperator);
                    }
                }

                notWanted.ForEach(f => e.AvailableOperators.Remove(f));
                e.DefaultOperator1 = FilterOperator.Contains;
            }
        }

[Dimitar]

Hi Ohad, 

I tested your approach with the sample app (used the Name column) and it works. I have attached a screenshot that shows this. 

Let me know what I am missing.