[Solved] GridView Filtering Issue in latest release

[Martin Hamilton]

I had to revert back to 2026.2.520 because of the issues with 026.2.702

The dropdown is broken and I can't release a new build of apps to customers

And now, I found issues with gridview filtering that has worked forever in all previous builds.

After reverting back to 520 these two line work properly again.

So, I'm just writing to let you know that you should look into the next build after 702 to ensure that the 2 lines below function.

Basically, I created a usercontrol and dropped the grid onto the control.

But when I tried to drop the user control onto a form - it threw a error box and wouldn't allow the control to be dropped on the form.

Using trial and error I found that by REMing out 1 or both of the 2 lines below the Usercontrol could be dropped onto the form again.

.MasterTemplate.EnableFiltering = True

.MasterTemplate.DataView.BypassFilter = False
Here is the full routine that I use to clean up the GridView in most instances.

   Friend Sub GridInitializeGridProperties(ByVal oRadGridView As Telerik.WinControls.UI.RadGridView, ByVal Optional EnableFiltering As Boolean = True, ByVal Optional EnableExcelFiltering As Boolean = True)
       Try
           With oRadGridView
               .AutoSizeRows = True
               .TableElement.SearchHighlightColor = Color.Orange
               .Dock = DockStyle.Fill
               .ReadOnly = True
               .AllowAddNewRow = False
               .AllowDeleteRow = False
               .AllowEditRow = False
               .AutoScroll = True
               .EnableFastScrolling = True
               .SelectionMode = GridViewSelectionMode.FullRowSelect
               .AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill
               .ShowNoDataText = False
               .EnableAnalytics = False
               .MasterTemplate.BestFitColumns()
               .EnableAlternatingRowColor = True
               .EnableGrouping = False
               .AllowDragToGroup = False
               If EnableFiltering Then
                   .EnableFiltering = True
                   .ShowFilteringRow = True
                   .MasterTemplate.EnableFiltering = True
                   .MasterTemplate.DataView.BypassFilter = False
               End If
               If EnableExcelFiltering Then
                   .ShowHeaderCellButtons = True
               End If
           End With
       Catch ex As Exception
       End Try
   End Sub
 
I'm not concerned about it just now because I reverted back to the previous release - but something more than just the dropdown combos seems to be amiss.

[Nadya | Tech Support Engineer]

Hello, Martin,

I am sorry to hear that you are having difficulties with our latest releases. I would like to clarify that we provided a hot fix for the issue with the comboboxes and it is already available in our  2026.2.715 version. Is it possible to test with this version as well and let me know if it works on your side? 

Regarding the filtering behavior in RadGridView, we have not made any recent changes that would affect this functionality. I created a sample project to reproduce the described scenario; however, filtering works correctly on my side, and I am not encountering any errors.

To help us investigate further, could you please either modify my sample project to reproduce the issue or provide a new sample project in which the problem occurs? This would allow us to examine the behavior in the appropriate context and identify the root cause. Thank you for your understanding.

Regards,
Nadya | Tech Support Engineer
Progress Telerik

[Martin Hamilton]

Hi Nadya

Thank you for your prompt response.... yea, I'm not 100% sure about the filtering issue - there could be other factors influencing things but I can say that after reverting back, the issue disappeared.

I have a question about 2026.2.715 because I did download it but it isn't in an installer format it's just a zip file with all of the DLLs.  So, what do I do?  Do I simply extract the dlls  and overwrite the existing ones??? 

Seems like a strange question but I was just wondering "if i do that" will it affect the GAC or anything??