Hei,

I would like to do some changes to the RichTextEditorRibbonBar's style gallery like changing the "Normal" style and adding/deleting new/existing styles.

How can I do it programmatically?

Thanks.

How to implement two MultiColumnCombobox Columns in a gridview as the second combo datasource is based on the first combo value .

When I tried this, the  values of the second combocolumn is lost except for the current row

Thanks

I am fairly new to Telerik winforms. I have this issue that I have no idea how to troubleshoot. Can someone help please? 

I made two base user controls that one contains a RadLabel and MaskedTextBox, and another contains Raddropdownlist and RadLabel. And then I put these two base user controls to third user control. Now I want to change the textbox background color of MaskedTextBox and RadDropDownList inside the third user control, when the third control is loaded.

Inside the ThirdControl_Load function, I can use the following code to change the background color of RadDropDownList: 

However, I can not do the same thing to MaskedTextBox. There is no such an option for me to get to the MaskedTextBox elements. Basically, after I type

Hi,

Just wanted to see what options I had for a custom data entry form.

I have a radDataEntry control working with a BindingNavigator, but is there a way for me to design a form with the control/layout I want and connect that to the BindingNavigator so all the populate/save functionality is there, just with my custom UI?

Cheers,

Damian

I'm working with the Trialversion and I'm trying to find out if the GridViewComboBoxColumn allows filtering based on the value of the previous column.

Datasource of GridViewComboBoxColumn :

USA      Iowa
Canada Quebec
Canada Ontario

Datagrid:

Country     ¦      State

--------------¦---------------------------------------------------------------

USA          ¦     Combobox which shows only the states of US (Colorado, Iowa)

Have somebody an example?

Thanks a lot for your help

I have a form with a grid on it, as well as some other controls. I can click between the grid and the other controls without any issues until I edit a cell using a custom editor through Editor Required. It seems that the grid may still be trying to give the control focus even through it isn't valid any more? Unfortunately the error only occurs on my test machine and not my dev machine, so I doubt that giving a sample would help. I am providing through the relevant snippets of code in the hopes that I am just doing something obviously wrong with setting up the custom editor.

First, this is the exception:

System.NullReferenceException: Object reference not set to an instance of an object.

   at Telerik.WinControls.UI.ImeSupport.CreateContext()
   at Telerik.WinControls.UI.ImeSupport.OnGotKeyboardFocus(Object sender, EventArgs e)
   at System.EventHandler.Invoke(Object sender, EventArgs e)
   at System.Windows.Forms.Control.OnGotFocus(EventArgs e)
   at Telerik.WinControls.RadControl.OnGotFocus(EventArgs e)
   at Telerik.WinControls.UI.RadGridView.OnGotFocus(EventArgs e)
   at System.Windows.Forms.Control.WmSetFocus(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at Telerik.WinControls.RadControl.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

This is the custom editor class:

    Private Class CustomTextEditor
        Inherits Telerik.WinControls.UI.RadTextBoxControlEditor
        Public Overrides Sub OnKeyDown(e As Forms.KeyEventArgs)
            Try
                If e.KeyCode = Forms.Keys.Enter Then
                    Dim Cell As Telerik.WinControls.UI.GridDataCellElement = DirectCast(Me.OwnerElement, Telerik.WinControls.UI.GridDataCellElement)
                    Dim View As Telerik.WinControls.UI.MasterGridViewTemplate = DirectCast(Cell.ViewTemplate, Telerik.WinControls.UI.MasterGridViewTemplate)
                    View.Owner.EndEdit()
                Else
                    MyBase.OnKeyDown(e)
                End If
            Catch ex As Exception
                MsgBox(ex.ToString)
            End Try
        End Sub
    End Class

I still get the exception even if I never actually process any of my custom enter key code (it just passes through to MyBase.OnKeyDown

This is the code that creates the editor

    Private Sub OnCustomEditor(sender As Object, e As Telerik.WinControls.UI.EditorRequiredEventArgs)

        Try
            e.EditorType = GetType(CustomTextEditor)
        Catch ex As Exception
            Util.Exceptions.Exception.Display(ex)
        End Try
    End Sub

I initially called e.Editor = New CustomTextEditor(), but changed to set EditorType after some examples I found. However it doesn't make any difference.

Can't confirm if this is mentioned anywhere so I wanted to let you know just in case...

For a RadDropDownList that isn't currently visible (it's added dynamically to a panel which isn't currently in focus even though the parent form itself is loaded and visible) the .Bottom and .Height properties don't return the correct values if AutoSize = true. .Height =0 and instead of giving the correct .Bottom value it returns the .Top value - I assume this is because .Height = 0.

If I leave all code exactly as it is but set AutoSize = false then .Bottom and .Height are calculated perfectly.

This is pretty counter intuitive since the RadDropDownList is 100% established except it hasn't yet been displayed. At this point there are no items in the list though so I'm guessing that might be breaking the AutoSize.