Hi All,
I have a grid which displays thousands of rows.I want to select all rows on a button click.I used the following approach. But it takes lot of time .
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Can anybody suggest me an alternative which is faster?.
Thanks
Abja
Hi Abja,
The fastest way to select all rows is to add the entire row collection to the ultragrid's selected.Rows collection:
ultragrid1.Selected.Rows.AddRange(ultragrid1.Rows.All)
Regrads,
Rico
Hi,
Thanks for your reply.It was really helpful.I required to cast objects to objects of Rows array .
grdEmpMessage.Selected.Rows.AddRange((UltraGridRow[) grdEmpMessage.Rows.All);
Thanks,
There's a KB article on this: HOWTO:What is the best way to programmatically select all rows in the grid?
I have an UltraGrid whose RowSelectorHeaderStyle is set to SeparateElement.The UltraGrid has one root band and some child bands.
I implemented the selection of all rows in a band by clicking the BandHeader's element.Is it possible to select only all sibling rows of a child band by clicking the BandHeader? I don't know how to get the sibling rows collection when you just have the BandHeader...
here is what I do:Private Sub ugTableGrid_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles ugTableGrid.ClickDim mainElem As Infragistics.Win.UIElement = Me.ugTableGrid.DisplayLayout.UIElementDim mousePos As Point = Me.ugTableGrid.PointToClient(Control.MousePosition)Dim elem As Infragistics.Win.UIElement = mainElem.ElementFromPoint(mousePos)Dim Header As BandHeader = NothingIf elem IsNot Nothing Then If elem.GetAncestor(GetType(RowSelectorHeaderUIElement)) IsNot Nothing Then Header = TryCast(elem.GetContext(), BandHeader) End IfEnd IfIf Header IsNot Nothing Then Me.ugTableGrid.Selected.Rows.Clear() SelectChildBandRows(Me.ugTableGrid.Rows, Header.Band.Key)End IfEnd Sub
As you can see I am geting the BandHeader from the context. But the BandHeader doesn't supports the sibling rowscollection.
Your suggestions don't work :(
TryCast(elem.GetContext(), RowsCollection) -> Returns Nothing&TryCast(elem.GetContext(), UltraGridRow) -> Returns Nothing
I'm pretty sure you can get the rows collection from the UIElement using the GetContext method.
GetContext is a method on the UIElement class which tried to get some real object that is related to the UIElement itself.
What UIElement are you using?
Try passing in a type of RowsCollection, or maybe UltraGridRow. If either of those returns non-null, that should give you a link to the collection of rows you want to select.