Question

i am using vb.net 2.0 and i would like to set an icon or image in a DataGridViewButtonColumn. I know the class has no member for it. Anyone has an idea?

Answer 1

Best answer is from http://social.msdn.microsoft.com/forums/en-US/csharpgeneral/thread/b0dfb55c-8bad-4c2d-aa72-36d8c138484e/

But as usual, you Google vb.Net and get answers in C#. I use C# to vb.net tool on the developerfusionwebsite to help me convert to vb.net but usually end up changing a fair amount.

Once you have a pointer this one is quite easy really.

In the dataGridView_CellPainting event add something like this

Private Sub InvoiceLinesDataGridView_CellPainting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellPaintingEventArgs) Handles InvoiceLinesDataGridView.CellPainting

    If e.ColumnIndex = 3 AndAlso e.RowIndex >= 0 Then
        e.Paint(e.CellBounds, DataGridViewPaintParts.All)

        Dim bmpFind As Bitmap = My.Resources.binoc16_h1
        Dim ico As Icon = Icon.FromHandle(bmpFind.GetHicon)
        e.Graphics.DrawIcon(ico, e.CellBounds.Left + 3, e.CellBounds.Top + 3)
        e.Handled = True
    End If
End Sub

Just to explain this a little, I wanted to use a resource which is a bitmap so I am converting that to an icon also. This works really well for me and I get a proper button column with an image. The column index is a bit rough as that could change so I was looking to refer using the column name – shouldn’t be too hard but you get the idea. SO much easier than the other options I have see around that get you making an extended custom column type.

This really should have just been part of the original control and I cannot fathom why MS crippled the grid so much. I have been trying to use third party controls like Telerik but the originals always seem to be more stable so am now seeing if I can stick with vanilla controls and adding my on extensions where required.