Hi everybody,

we are extensively using your great new RadVirtualGrid.

We currently have this problem:

If an underlying data item of a row is being edited in a separate editor or values have been updated by database queries: how do we force an update on the cell?

Obviously somehow the event CellValueNeeded has to be refired; but how do we do that?

We already tried:

MyVirtualGrid.Invalidate()
MyVirtualGrid.Refresh();
MyVirtualGrid.Update();

Thanx in advance,

regards

Ronald

Hi Team, 

I guess this is something i  either cannot find or i am missing something in tutorials, 

I want to have a tree which binds to my custom list  and i want to use load on demand feature , 

i did find  solution in patches ,

1) load on demand examples only creates new RadTreeNode whereas i want to bind my custom object

2) binding custom object example shows how to bind a object list with levels known at design time. 

Any sample code or direction will be highly appreciated.  

I'm building a grid where a GridViewComboBox will have its list dynamically updated based on the selection of an item in a previous column.  I've read numerous posts about how to and how not to do this and they all make sense but I'm having one tiny problem that I cannot resolve (its because of my newness to this Grid I'm sure!)

Here's the code:

Private Sub ATGrid_EditorRequired(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.EditorRequiredEventArgs) Handles ATGrid.EditorRequired
   If ATGrid.CurrentColumn.Name.ToLower = "messagecodetype" Then
      If e.EditorType Is GetType(RadComboBoxEditor) Then
         RemoveHandler DirectCast(e.Editor, RadComboBoxEditor).ValueChanged, AddressOf Editor_ValueChanged
         AddHandler DirectCast(e.Editor, RadComboBoxEditor).ValueChanged, AddressOf Editor_ValueChanged
      End If
   End If
End Sub

See where it says "RadComboBoxEditor" ?  My Visual Studio 2017 code says, "RadComboBoxEditor not defined"

My form imports the following:

Imports Telerik.WinControls
Imports Telerik.WinControls.UI

but clearly this object is either not exposed or not found in either namespaces.  Can someone direct me to the correct namespace, please?

Thanks much!

-Curtis

I need to load a "Dropdown & List" with images and data from a SQL Server table but not if I load the options with Entity Framework or some other option.

Could someone help me or recommend some similar example please?

In attempting to make use of this control there are a number of series issues with it.

Firstly, when attempting to add ranges to the range collection via the properties in visual studio 2017, this doesn't work.

What happens is the ranges you add are created in the Designer.cs of the form you are working on, but are not associated with the TrackBar you created them from.  (see attachment 1.) If you click the ranges collection again after adding one of the ranges, it naturally shows up empty. So currently the only way to add ranges is to do so programmatically. 
Secondly, performance issues, setting the maximum of of the trackbar to 1000+ and it becomes unreasonably slow, and unresponsive.

Thirdly, Assigning a value that exceeds ranges of the minimum or maximum, results in a popup message stating "The Value should be between minimum and maximum" no exception is thrown. (this looks like it was supposed to be a design time response) 

Setting a range to the start and end points to the minimum and maximum values of the trackbar, often results in one of the thumbs not being visible on the screen after loading. (see second attachment) 

I've seen elsewhere on the forum that the suggested performance fix was to apply basically scaling to the trackbar to reduce the number of elements that it needs to render, but when using the control to say track the position of media in seconds, scaling doesn't really work. 

Hi,

The mouse up, double click and, mouse down events do not fire inside the radmaskededit box control. They only fire when clicking on the edge of the control. The events work fine for the regular masked edit box.

Please advise.

Regards

Mohammed