Image in a command column

[Malcolm]

Hi,

I've looked at a few examples of this but they don't appear to work. I'm getting an error when actually assigning the image. The error is Exception has been thrown by the target of an invocation.

The code that I'm trying is:

Private Sub rgvItems_CellFormatting(ByVal sender As Object, ByVal e As CellFormattingEventArgs) Handles rgvItems.CellFormatting
    If TypeOf e.CellElement.ColumnInfo Is GridViewCommandColumn AndAlso Not (TypeOf e.CellElement.RowElement Is GridTableHeaderRowElement) Then
        Dim column As GridViewCommandColumn = DirectCast(e.CellElement.ColumnInfo, GridViewCommandColumn)
        If column.Name = "PLButton" Then
            Dim element As RadButtonElement = DirectCast(e.CellElement.Children(0), RadButtonElement)
            element.DisplayStyle = Telerik.WinControls.DisplayStyle.Image
            ' This is an example of course
            element.Image = ImageList.Images(0)
            'e.CellElement.StringAlignment = StringAlignment.Center
            'Me.ApplyThemeToElement(element, "ControlDefault")
        End If
    End If
End Sub

The line where it seems to fail is element.image = imagelist.images(0). The imagelist is an image list surprisingly enough and it has images in it. They are being used elsewhere to populate an image column in the grid view.

Is there anything obvious stands out?

Thanks

[Richard Slade]

Hello,

I've just tried the following in an existing grid, inside the CellFormatting event

If TypeOf e.CellElement.ColumnInfo Is GridViewCommandColumn AndAlso Not (TypeOf e.CellElement.RowElement Is GridTableHeaderRowElement) Then
    Dim column As GridViewCommandColumn = DirectCast(e.CellElement.ColumnInfo, GridViewCommandColumn)
    If column.Name = "Button" Then
        Dim element As RadButtonElement = DirectCast(e.CellElement.Children(0), RadButtonElement)
        element.DisplayStyle = Telerik.WinControls.DisplayStyle.Image
        ' This is an example of course
        element.Image = Image.FromFile("C:\Users\Richard\Pictures\img.gif")
        'e.CellElement.StringAlignment = StringAlignment.Center
        'Me.ApplyThemeToElement(element, "ControlDefault")
    End If
End If

and it all worked fine. Please could you try this (taking an Image from file from yuor own machine) and see if that works please.
Thanks
Richard

[Malcolm]

Ah ha! It would seem that I can load from file, including the image I was trying to load (a PNG). But why not from the image list? I'm already using that to populate images in an image column.

Seems a weird one really.

Cheers!

[Richard Slade]

Hi Stephen,

I haven't been able to replicate your issue at the moment. Please can you post here a small sample and i'll be happy to take a look at it for you
Richard

[Malcolm]

Richard, I'm a complete idiot. My imagelist was called StatusImages. D'oh. Fixed now.

Colour me exceptionally embarresed!

[Richard Slade]

Not to worry. Happens to us all!
All the best
Richard