使用工具提示类在网格列(winforms)上添加工具提示,是否可能?

可以向现有控件添加工具提示。我从来没有用过radgridview,所以我只能给你一个大致的方向。

ToolTip tooltip = new ToolTip();
tooltip.SetToolTip(grid, "your caption here");
tooltip.Popup += HandleToolTipPopup;
tooltip.AutoPopDelay = {time to display tooltip};

private void HandleToolTipPopup(object sender, PopupEventArgs e)
{
    Point mouseLocation = Control.MousePosition;
    Point relativeLocation = grid.PointToClient(mouseLocation);

    // Check to see if it is within the area to popup on.
    // Set e.Cancel to false if not.
}