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Client OnRowDropping handler is called when other events occur

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Paul
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Paul asked on 16 May 2016, 12:51 AM

I have a RadGrid with several client event handlers enabled. If I include an OnRowDropping handler, it gets invoked before either of the other two event handlers (OnRowDblClick and OnRowContextMenu). If I remove the OnRowDropping handler the other two work correctly.

<telerik:RadGrid ID="RadGridPapers" runat="server"
    AutoGenerateColumns="false"
    ShowGroupPanel="false"
             
    OnItemDataBound     ="RadGridPapers_ItemDataBound"
    OnItemCommand       ="RadGridPapers_ItemCommand"
    OnRowDrop           ="RadGridPapers_RowDrop"
    >
    <clientsettings AllowRowsDragDrop="true">
        <Selecting AllowRowSelect="true" EnableDragToSelectRows="false" />
        <ClientEvents
            OnRowDblClick="rowDoubleClick"
            OnRowContextMenu="RowContextMenu"
            OnRowDropping="rowDropping"
            />
    </clientsettings>
 
    <MasterTableView Name="MasterTablePapers"
        DataKeyNames="abstractID"
        Caption="Unscheduled Abstracts (double-click to schedule next, or drag to a timeslot above, or right-click to assign status)"
        NoMasterRecordsText="(No unscheduled Abstracts in this session.)"
        AllowAutomaticInserts="true" AllowAutomaticUpdates="true" AllowAutomaticDeletes="false"
        AllowPaging="false" AllowSorting="false" AllowFilteringByColumn="false"
        EnableLinqGrouping="false"
        CommandItemDisplay="None"
        TableLayout="Fixed" Width="100%"
        >
        <GroupByExpressions>
            <telerik:GridGroupByExpression>
                <SelectFields>
                    <telerik:GridGroupByField FieldAlias="Status" FieldName="dispositionName" HeaderValueSeparator=": " />
                </SelectFields>
                <GroupByFields>
                    <telerik:GridGroupByField FieldName="dispositionID" SortOrder="Ascending" />
                </GroupByFields>
            </telerik:GridGroupByExpression>
        </GroupByExpressions>

 

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Kostadin
Telerik team
answered on 18 May 2016, 12:31 PM
Hi Paul,

The cause for this issue is that the client logic is executed fast enough to create a drag-able row which fires the OnRowDropping client event. A possible solution is to check if the row is dropped on the same row as the dragged one. I will forward this issue to one of our developers and they will investigate the issue further.

Regards,
Kostadin
Telerik
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Paul
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answered on 22 May 2016, 03:55 PM
Thank you Kostadin! I fixed the problem by adding a GridDragDropColumn so the double-click and right-click anywhere else in the row do not initiate the row drag. It's working fine now.
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Doug
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answered on 27 Mar 2018, 06:58 PM
Was ever fixed by Telerik?  I am running into this issue now.
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Paul
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answered on 27 Mar 2018, 07:01 PM
I don't know if it was fixed. Once I implemented the above-mentioned workaround by changing the UI a bit I stopped testing the original use. But the workaround has been completely stable.
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Doug
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answered on 27 Mar 2018, 07:05 PM
Thanks for confirming Paul.  I am not sure my manager will be acceptable with this workaround, but I will float it by him.  To clarify what you did; you basically added a "handle" in the form of a column, that user has to click on in order to drag row?
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Kostadin
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Paul
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