Hello,
I want to change the cursor type when the mouse goes over a certain column in a dataview. I've the following code:
Private Sub DataGridView1_MouseHover(ByVal sender As Object, ByVal e As System.EventArgs) Handles DataGridView1.MouseHover
If DataGridView1.CurrentCell.ColumnIndex = 7 Then
DataGridView1.Cursor = Cursors.Help
Else
DataGridView1.Cursor = Cursors.Default
End If
End Sub
The problem is that when entering the DataView, the cursors goes over the headers and I receive an error because there is no CurrentCell!
Can annyone help me please
Thanks,
Joao Pinto
Mouse hover DataGridView
Neotech
I would use a datagridview HitTestInfo to see what cell the mouse is over. I dont think it is likely that the mouse is over the current cell. You should also set the cursor back to the default when you leave the datagridview.
Private Sub DataGridView1_MouseHover(ByVal sender As Object, ByVal e As System.EventArgs) Handles DataGridView1.MouseHover
Dim pt As New Point
Dim hti As DataGridView.HitTestInfo
Try
pt = Me.PointToClient(MousePosition)
Catch ex As Exception
Return
End Try
hti = DataGridView1.HitTest(pt.X, pt.Y)
If hti.Type = DataGridViewHitTestType.Cell AndAlso hti.ColumnIndex = 1 Then
DataGridView1.Cursor = Cursors.Hand
Else
DataGridView1.Cursor = Cursors.Default
End If
End Sub
Private Sub DataGridView1_MouseLeave(ByVal sender As Object, ByVal e As System.EventArgs) Handles DataGridView1.MouseLeave
DataGridView1.Cursor = Cursors.Default
End Sub
Nima_Don
try using the Cursor class instead or rather check to see if there is a current cell before changing the cursor...better error handling. Example:
if Me.DataGridView.CurrentCell <> DBNull.Value then
'it *maybe* DBNull.Value but check to see if there is a value in the CurrentCell by stepping through the debugger and making sure the mouse/cursor hover overs the empty cell to see the value of CurrentCell
if Me.DataGridView.CurrentCell.ColumnIndex = 7 then
Me.DataGridView.Cursor = Cursors.Help
else
Me.DataGridView.Cursor = Cursors.Default
end if
end if