Pinned Rows not showing!

[Zeev]

radGridView1.Rows[number].PinPosition = PinnedRowPosition.Top;

When i run that line the row disappears, 
I have Alot of properties off on this grid and i'm not sure which of them is the cause of this.
Need your help, what can remove/hide the row?

[Zeev]

More info:
C#
What i'm trying to do is get a Row of my choosing(via CODE not UI) and move it to the top of the list.
I fail to find an easy way for this, and nothing in the forums other than Drag&Drop which i don't need!

[Pascal]

I have the same problem right now. This are the properties I set while inilializing the GridView:

    Private Function CreateInterfaceMatrixGridView() As RadGridView
        Dim newGrid As New RadGridView With {
            .AllowRowResize = False,
            .AllowAddNewRow = False,
            .EnableGrouping = False,
            .AllowDeleteRow = False,
            .SelectionMode = GridViewSelectionMode.CellSelect,
            .AllowCellContextMenu = False,
            .AllowColumnHeaderContextMenu = False,
            .AllowRowHeaderContextMenu = False,
            .BeginEditMode = RadGridViewBeginEditMode.BeginEditProgrammatically,
            .AllowEditRow = False,
            .ShowRowHeaderColumn = False,
            .ShowColumnHeaders = False,
            .VirtualMode = False
        }

        newGrid.TableElement.BorderHighlightColor = Color.CornflowerBlue

        Dim viewDef As New TableViewDefinition
        newGrid.MasterTemplate.ViewDefinition = viewDef

        Return newGrid
    End Function

EDIT: When pinning the row AFTER "GridView.EndUpdate()" it works fine. It doesn't work when setting pinned status on row creation or after adding the row to the grid. 

[Dinko | Tech Support Engineer]

Hello Zeev,

Thank you for the provided code snippet. I have tried to follow your steps but wasn't able to observe the described behavior. My guess here is that my implementation is different from yours. Could it be possible to modify my test project to reproduce this behavior? When you run the project click on the button at the bottom to add a row pinned at the top. After adding the row to the collection I am setting it pin position. The control is in a data-bound scenario. 

Regards,
Dinko | Tech Support Engineer
Progress Telerik