Changing cursor during CellFormatting

[Tinus]

Hi,

I want to display a hand cursor for my first column in RadGridView. Unfortunately there's no Cursor property. What can I use here?

      private void rgvOrders_CellFormatting(object sender, CellFormattingEventArgs e)
      {
         if (e.CellElement.ColumnIndex == 0)
         {
            if (!e.CellElement.Font.Underline)
            {
               e.CellElement.Font = new Font(e.CellElement.Font, FontStyle.Underline);
               e.CellElement.ForeColor = Color.Blue;
               // I want something like this
               // e.CellElement.Cursor = Cursors.Hand;
            }
         }
      }

Regards
Martin

[Tinus]

Ok, goes like this

      private void rgvOrders_CellFormatting(object sender, Telerik.WinControls.UI.CellFormattingEventArgs e)
      {
         if (e.CellElement.ColumnIndex == 0)
         {
            e.CellElement.Font = new Font(rgvOrders.Font, FontStyle.Underline);
            e.CellElement.ForeColor = Color.Blue;
            e.CellElement.MouseEnter += new EventHandler(CellElement_MouseEnter);
            e.CellElement.MouseLeave += new EventHandler(CellElement_MouseLeave);
         }
      }

      private void CellElement_MouseEnter(object sender, EventArgs e)
      {
         (sender as GridCellElement).ForeColor = Color.Purple;
         (sender as GridCellElement).GridControl.Cursor = Cursors.Hand;
      }

      private void CellElement_MouseLeave(object sender, EventArgs e)
      {
         (sender as GridCellElement).ForeColor = Color.Blue;
         (sender as GridCellElement).GridControl.Cursor = Cursors.Default;
      }

[Jack]

Hello Tinus,

I am glad to hear that you have found a solution yourself. Maybe a better solution would be processing the MouseMove and MouseLeave events of RadGridView. You should check the element under the mouse by using the GetElementAtPoint method of the ElementTree. Take a look at my sample:

void radGridView1_MouseMove(object sender, MouseEventArgs e)
{
    GridDataCellElement cell = this.radGridView1.ElementTree.GetElementAtPoint(e.Location) as GridDataCellElement;
    if (cell != null && cell.ColumnIndex == 0)
    {
        cell.ForeColor = Color.Purple;
        this.radGridView1.Cursor = Cursors.Hand;
    }
    else
    {
        if (cell != null)
        {
            cell.ForeColor = Color.Blue;
        }
        this.radGridView1.Cursor = Cursors.Default;
    }
}

I hope this helps. Should you have any further questions, feel free to ask.

Sincerely yours,
Jack
the Telerik team

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[Tinus]

Thanks for the feedback, I will use your recommendation.

Regards
Martin

[Rawad]

Dear 

I tried your solution but it's giving the following error:

Unable to cast object of type 'Telerik.WinControls.UI.RadGridViewElement' to type 'Telerik.WinControls.UI.GridDataCellElement'


here is my code: 
  
Private Sub RadGridView1_MouseMove(sender As System.Object, e As System.Windows.Forms.MouseEventArgs) Handles RadGridView1.MouseMove
        Dim RadElement = Me.RadGridView1.ElementTree.GetElementAtPoint(e.Location)
        Dim cell As GridDataCellElement = DirectCast(RadElement, GridDataCellElement)
        If Not IsNothing(cell) AndAlso cell.ColumnIndex = 1 Then
            cell.GridControl.Cursor = Cursors.Hand
        Else
            If Not IsNothing(cell) Then
                cell.GridControl.Cursor = Cursors.Default
            End If
        End If
    End Sub

[Stefan]

Hi Rawad,

Thank you for writing.

The approach suggested in this thread concerns earlier version of RadGridView (from 2009). With the latest version you can use the MouseMove event:

void radGridView1_MouseMove(object sender, MouseEventArgs e)
{
    GridCellElement hoveredCell = radGridView1.ElementTree.GetElementAtPoint(e.Location) as GridCellElement;
    if (hoveredCell != null && hoveredCell.ColumnInfo.Name == "StringColumn")
    {
        radGridView1.Cursor = Cursors.Cross;
    }
    else
    {
        radGridView1.Cursor = Cursors.Default;
    }
}

I hope this helps.

Regards,
Stefan
Telerik

 

 

[Rawad]

Dear Stefan

Thanks for your reply.
I'm using the MouseMove event, but it's giving me error when I cast to the object to "GridCellElement" 
I resolved by using   Try  Catch,  knowing that it's not good solution

    Private Sub RadGridView1_MouseMove(sender As System.Object, e As System.Windows.Forms.MouseEventArgs) Handles RadGridView1.MouseMove
        Dim RadElement = Me.RadGridView1.ElementTree.GetElementAtPoint(e.Location)
        Try
            Dim cell As GridCellElement = DirectCast(RadElement, GridCellElement)
            If Not IsNothing(cell) AndAlso cell.ColumnIndex = 1 AndAlso cell.RowIndex >= 0 Then
                cell.GridControl.Cursor = Cursors.Hand
            Else
                If Not IsNothing(cell) Then
                    cell.GridControl.Cursor = Cursors.Default
                End If
            End If
        Catch ex As Exception
            RadGridView1.Cursor = Cursors.Default
        End Try
    End Sub

[Stefan]

Hello,

Well, that 's because you are using DirectCast, instead of try case. Here is the correct code:

Private Sub radGridView1_MouseMove(sender As Object, e As MouseEventArgs)
    Dim hoveredCell As GridCellElement = TryCast(radGridView1.ElementTree.GetElementAtPoint(e.Location), GridCellElement)
    If hoveredCell IsNot Nothing AndAlso hoveredCell.ColumnInfo.Name = "StringColumn" Then
        radGridView1.Cursor = Cursors.Cross
    Else
        radGridView1.Cursor = Cursors.[Default]
    End If
End Sub

You can also use our online converter to convert between C# and VB.

I hope this helps.

Regards,
Stefan
Telerik

 

 

[Rawad]

Thanks Stefan. Well noted.
it's working good now.