Datagridview mouse hover

I have the code following:

Code:

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    Private Sub dgPackage_CellToolTipTextNeeded(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellToolTipTextNeededEventArgs) Handles dgPackage.CellToolTipTextNeeded
        e.ToolTipText = "Me"
    End Sub

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This code will make every column to show the tooltip as long as mouse hover to the column. May I know how can I change the code so that only when the mouse hover on the first column then only it will show?