The DataGridView implements it's own tooltips for cells by default.
You'll have to set DataGridView.ShowCellToolTips to False before a tooltip control you've added will work.
Well, it works fine for me...
So you've added a tooltip control to your form (lets say "ToolTip1"). And then you set the dynamic property on the datagridview: DataGridView1.ToolTip on ToolTip1 = "some text"
And then you set DataGridView1.ShowCellToolTips = False
And then when you run the program and mouse over the DataGridView and wait, no tooltip displays?
That sounds odd... Is there anything else going on when the DataGridView has a MouseOver or MouseEnter event? Anything changing focus?
I set all properties at Design time. The tooltip shows for all the other controls except for this grid.
Not sure if it matters, The grid is "DataBound" , and it is placed on a panel.