Very simple problem. 

How to get a CLB with only one item ever checked? There's a simple property to allow only single-select, but not one for 'only allow one box to be checked at a time'

How to do this, from inside the 'ItemCheckedChanged' event handler, without causing a stack overflow, as the previously cheked items are un-checked?

I feel this must be really easy - am I just missing something?

Hi,

I'm looking for a way to forbid resizing a task but allow users to move them to another time.

If found issues about blocking events (https://www.telerik.com/forums/how-to-disable-edit-add-new-delete-items), but it implies to "cancelstart" on the dragDropService.

I can't find an event that gives me enough information to choose between "allow" and "cancel" modification if its "move" or "resize"

ps: I had to remove packages of the solution so it respects the 20MB limit, hope that won't cause any trouble.

Thanks for your time and help.

Simon.

hi 

what bottom border text box control not show after enable Embedded Label

I would be great if the RadProgresBar control was a bit more tolerant of values whih are > max value.

OK, so this is a programming errot, but the error message the user sees is a bit extreme - a .NET error.

Perhaps the Telelrik framework might just ignore these values which are > max value , and just set to 'max value'.

I've made the change to the App.config file to set to use the 'Fluent' Theme for all forms everywhere in the application:

 <add key="TelerikWinFormsThemeName" value="Fluent" />

..which looks perfect in the Designer, but the runtime is still using some other theme.

 Designer

 Runtime

The form does not specify a Theme, so I thought it would use the 'Fluent' theme which I specified.

Do I need to do something else to make the runtime form use the right theme? I'm confused....

I'm experimenting thia for almost one week. I almost read every post in forum and also other sources. problem is simle. I want to flash a grid cell when value changes. It works them column and row count is small but when grid is in fullscreen form with 20 columns and lets say 100 rows, cells sometimes blink, sometimes not. I noticed that when you decrease blink time it doenst work. when you go up to 150 ms and up it works. this tells me it has something todo with refresh rate or something. same problem exists with other solution approaches in forum.

Can I kindly ask you yo provide a working a flashing cell sample. I really tried to use every event, every suggestion in this forum.... and also its not first time I face the problem. Last year I had again and at the end I gave up and didnt use flashing function in my project. But this time I reaaly need this.

And also I should mention that this is a very common practice nowadays, so radgrid should able to handle that.

best.

' at the form load event..   
radGrid1.DataSource = sampleDataTable()
   
Private Function sampleDataTable() As DataTable
        Dim table1 = New DataTable("prices")
        table1.Columns.Add("id")
        table1.Columns.Add("Symbol")
        table1.Columns.Add("BuyPrice")
        table1.Columns.Add("MarketPrice")
        For i = 1 To 20
            table1.Columns.Add("Extra Column " & i)
        Next
        For i = 1 To 100
            table1.Rows.Add(i, "Stock A, "10", "10", "10", "10", "10", "10", "10", "10", "10", "10", "10", "10", "10", "10", "10", "10", "10", "10", "10", "10", "10", "10")
        Next
        Return table1
End Function
    
Private Sub radGrid1_CellValueChanged(sender As Object, e As DataGridViewCellEventArgs) Handles radGrid1.CellValueChanged

        radGrid1.Rows(e.RowIndex).Cells(e.ColumnIndex).Style.BackColor = Color.Lime

        Dim t1 As Task = Task.Run(Sub()
                                      System.Threading.Thread.Sleep(180)
                                      radGrid1.Rows(e.RowIndex).Cells(e.ColumnIndex).Style.BackColor = oldcolor
                                  End Sub)

End Sub
    

Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click

' change some random cells

        Dim r As Integer = random.Next(1, 10)
        Dim c As Integer = random.Next(1, 6)

        radGrid1.Rows(r).Cells(c).Value = Now.ToLongTimeString

End Sub
    

Hi all, I'm trying to do something very similar to the WPF Custom Shape example; add controls to a shape in some sort of container (panel,...)

WPF Example desired in Winforms

Is there a Winforms version of this example somewhere?

Future Request:  I think (IMHO) that there should be a section for this.  Defining a Custom Shape, Adding Controls, Setting Custom Connection Points, Adding the new shape to the Toolbox, Configuring the Properties Editor, and setting up Drag-Drop.  If you are creating a custom shape all of these are parts of the effort.  The Documentation is all spread out over each element with no real guiding document to cover what all is possible/necessary to get a working shape (that i could find anyway).

Hi

Is there any way to use callout instead of tooltiptext in radstepprogress control

such that when i point to StepItemIndicatorElement the callout display the first header text

if yes , can you give me a sample please

Best regards

Atfat

Hi

Is there any way to use callout instead of tooltiptext in radstepprogress control

if yes , can you give me a sample please

Best regards

Atfat

hi

how show cell time like hh:mm

GridViewDateTimeColumn column = (GridViewDateTimeColumn)this.radGridView1.Columns["Date"];

column.FormatString = "{0:hh.mm}";      //hour.minutes