New rows not showing until another action done

[Eddie]

Hello,

I have an app that creates grids programmatically and then populates them (in unbound mode) with data.  However I don't actually see the rows displayed in the grids until I do some other activity.  For example if I add another new row manually, or reorder columns, etc.  then suddenly I will see all the previously added rows.  I tried putting in a call to Refresh() for each grid when I was done adding rows but that didn't seem to help.

        private void populateGroupFactControls()
        {
            var level2Grids = from fact in activeJob.FactSet
                              where fact.Level == 1 && fact.DataTypeDesc == p.factTypeGroup
                              select new
                                         {
                                             GridName = uiUtility.CreateFactGridName(fact.FactName),
                                             Rows =
                                                  from childFact in activeJob.FactSet
                                                  where childFact.Level == 2 && childFact.ParentFactID == fact.FactID
                                                  join factValue in activeDataElement.Values
                                                  on childFact.FactID equals factValue.FactID
                                                  group factValue by factValue.GroupInstanceID
                                                  into rowCells
                                                  select new
                                                     {
                                                         RowID = rowCells.Key,
                                                         Cells = rowCells
                                                     }
                                         };

            foreach(var grid in level2Grids)
            {
                var gridControl = (RadGridView) groupFactTable.Controls.Find(grid.GridName, true).First();
                gridControl.Rows.Clear();
                foreach(var row in grid.Rows)
                {
                    GridViewRowInfo newRow = gridControl.Rows.AddNew();
                    newRow.Cells[p.RowID].Value = row.RowID;
                    foreach(var cell in row.Cells)
                    {
                        newRow.Cells[cell.FactID].Value = cell.InstanceValue;
                    }
                }
                gridControl.Refresh(); // Doesn't seem to help
            }
            groupFactTable.Refresh(); // Doesn't seem to help either
        }

Another consideration is that the grids are all being held in a TableLayoutPanel control  (groupFactTable in the above code sample).  I also tried calling the Refresh method for that parent control but that didn't help either.

I'm using the Jan 2009 version (8.2.0.0) of the RadGridView.  Any thoughts would be greatly appreciated.

Thanks!

Eddie

[Jack]

Hi Eddie,

Thank you for contacting us.

You should call the Update method of the GridElement instead of calling the Refresh method. Consider the code snippet below:

gridControl.GridElement.Update(GridUINotifyAction.Reset);

If this does not help, please send us your application so we can test it and find the best solution. I am looking forward to your reply.

Kind regards,
Jack
the Telerik team

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[Eddie]

Jack,

Thanks much for your prompt response.  Unfortunately that did not work either.  I did find a work-around in the meantime: if I change the SortExpressions of the grids via gridControl.MasterGridViewTemplate.SortExpressions.Add() then they do display all the rows properly. 

I set up a small test project consisting of a simple table layout control and generated two unbound grids within it, then added some rows to them.  Everything worked fine in that case, so it is something about my specific project that is causing the issue.

My work around is fine for now, because I was going to be adding default sorting to the grids anyways, but I thought I'd post this to the discussion in case any other users ran into the same issue.

Thanks again for your help!

-Eddie

[Jack]

Hello Eddie,

I am glad to hear that you have found a solution for this issue. Do not hesitate to contact us if you have other questions.

All the best,
Jack
the Telerik team

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