GetSelectedRanges during GridSelectionChangedEventHandler

[Leow Kah Man]

Hi, During GridSelectionChangedEventHandler event, I tried to GetSelectedRanges but I keep getting the previous range. As the event is named "...Changed...", I would assume that it should be triggered only after the selection has changed. Please see attached.

GetSelectedRanges_During_SelectionChanged.zip

[Administrator]

Hi Leow,

The reason is that selection is not cleared when the user moves the currentcell out of a selected range. You need to set the ExcelLikeCurrentCell behavior to TRUE. Here is a code snippet.

this.gridControl1.ExcelLikeCurrentCell = true;

Try this code to find the newly selected range in a grid . Here is a code snippet.

private void gridControl1_SelectionChanged(object sender, Syncfusion.Windows.Forms.Grid.GridSelectionChangedEventArgs e)
{
if (e.Reason != GridSelectionReason.MouseDown && e.Reason != GridSelectionReason.Clear)
{
GridRangeInfoList g;
gridControl1.Selections.GetSelectedRanges(out g, true);
Console.WriteLine(g.Info + ":::::" + e.Reason);
}
}

Let me know if this helps.
Best Regards,
Haneef

[Leow Kah Man]

1. Select a cell,
2. hold the control button, select another cell.

Your code will prevent the 2nd one from firing, because on the 2nd time, the e.Reason is MouseDown.

If I choose to use only e.Reason != Clear,
then I will see that MouseDown gets fired twice on (1).

[Leow Kah Man]

if (!e.Range.IsEmpty
&& (
e.Reason == GridSelectionReason.SetCurrentCell
|| e.Reason == GridSelectionReason.ArrowKey
|| e.Reason == GridSelectionReason.MouseDown
)
)

Perhaps this solves my problem.
What do you think?

[Administrator]

Hi Leow,

Thanks for your update.

The reason is that when you click the specified cell, the grid clears the old selection with e.Reason = GridSelectionReason.MouseDown and also add the new selection with the same e.Reason = GridSelectionReason.MouseDown. To find the selection type( Clear/Add selection ) with e.Reason = GridSelectionReason.MouseDown, you can use below to achieve this issue.

if (e.Reason != GridSelectionReason.MouseDown && e.Reason != GridSelectionReason.Clear)

Or

if (!e.Range.IsEmpty
&& ( e.Reason == GridSelectionReason.SetCurrentCell
|| e.Reason == GridSelectionReason.ArrowKey
|| e.Reason == GridSelectionReason.MouseDown
)
)

Let me know if this helps.
Best Regards,
Haneef

[Leow Kah Man]

Yes it does, thank you.