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C# WinForms: Trouble getting tooltip near mouse coordinate

Posted on 2012-08-15
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Last Modified: 2012-08-15
I have a DataGridView and need to show a tool tip at the cursor displaying the full contents of the entire row.  But this call seems to fail:

            this.addSpecialtyToolTip.Show("Test tip", myDataGridView, 0, 0);

However, this one works:

            this.addSpecialtyToolTip.Show("Test tip", myOkButton, 0, 0);


But I do not want the tool tip over the OK button.

I did not the DataGridView has a bool property "ShowCellToolTips", but when I call

myDataGridView.ShowCellToolTips = true, nothing displays.

Any ideas what I am missing?
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Question by:newbieweb
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Accepted Solution

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Robert Schutt earned 2000 total points
ID: 38296364
If you have ShowCellToolTips = true, then an 'internal' tooltip is shown when a cell value is too long to display. Set it to false and you can set individual tooltips like this:
this.myDataGridView.Rows[0].Cells[0].ToolTipText = "Test tip cell";

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Assisted Solution

by:Robert Schutt
Robert Schutt earned 2000 total points
ID: 38296373
Sorry, got that mixed up, ShowCellToolTips = true shows cell tooltips (duh). But by default will only show the full value if it's too long to show in the cell as it is. So use the cell tooltip for that. Otherwise, to use your own tooltip, you need to set ShowCellToolTips = false.
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Author Comment

by:newbieweb
ID: 38297163
Mine will always be lober than an individual cell's width.  But your code does not work.  I did the following:

myDataGridView.ShowCellToolTips = true;
myDataGridView.Rows[0].Cells[0].ToolTipText = "Test cell tip";

What am I missing?
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Author Closing Comment

by:newbieweb
ID: 38297228
Got it working as you described.  Thanks.
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