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Steve Hager
80
Ultragrid tooltip won't reshow
posted

I'm dynamically setting the tooltip for a grid depending on which rows are selected. The problem is I have to click away from the grid after I select the rows and then move the mouse back over the grid for the tool tip to display.

private void _toolTip_Popup(object sender, PopupEventArgs e)
{        	
    if (e.AssociatedControl != CurveGrid)
    {
        e.Cancel = true;
        return;
    }

    var dates = CurveGrid.Selected.Rows.All.Cast<UltraGridRow>()?.Select(r => r.GetCellValue("Date")).OfType<DateTime>().ToList();
    if (dates.Any())
    {               
        _toolTip.Popup -=_toolTip_Popup;
        _toolTip.SetToolTip(CurveGrid, $"CUSTOM TEXT GOES HERE");
        _toolTip.Popup +=_toolTip_Popup;
    }
    else
    {
        e.Cancel = true;
    }
}

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  • 2155
    Offline posted

    Hello Steve,

    If you assign a tooltip to a control, then it works via the MouseHover event. This event will only fire once when the mouse moves into the control and stays there for a certain interval, and it will not fire again until the mouse leaves the control and comes back in. So you really cannot use SetToolTip like this to show a tooltip for a part of a control like a row.

    If you would like a dynamic tooltip, I suggest you take a look at a sample implementation of UltraToolTipManager in the product sample at '\Samples\Legacy\Misc\CS\ToolTipManager\ToolTips with Context CS'.

    I have also created a sample that demonstrates the usage of UltraToolTipManager. In the attached sample, I set up a tooltip at UltraGrid's MouseEnterElement and show the number of current selected rows if there are more than one rows are selected.

    UltraGrid_Tooltip.zip

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