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Manfred
550
Select non-grouped rows only from a selected group
posted

Hello,

I'd like to mark the non-grouped rows in a selected group in order to copy those selected rows.

Unfortunately, selecting with "GetAllNonGroupByRows" in
   "this.ultraGrid1.Selected.Rows.AddRange( this.ultraGrid1.Rows.GetAllNonGroupByRows() );"
gets me all non-grouped rows, whereas I only like to select the non-grouped rows of a previously selected, certain group.

Looping through like in the following lines is pretty copious, is there a better way than that?

UltraGridRow[ allRowsNotGrouped = gridReport.Rows.GetAllNonGroupByRows(); //all non-grouped rows
List<UltraGridRow> allRowsNotGroupedInSelectedGroup = new List<UltraGridRow>();
foreach (UltraGridRow row in allRowsNotGrouped)
{
  if (row.ParentRow.Selected == true)  // select rows only from the selected group
  {
    allRowsNotGroupedInSelectedGroup.Add(row);
  }
}
UltraGridRow[ allRowsNotGroupedInSelectedGroup2 = (UltraGridRow[)allRowsNotGroupedInSelectedGroup.ToArray(); //
gridReport.Selected.Rows.AddRange((UltraGridRow[)allRowsNotGroupedInSelectedGroup2);

Moreover, the last line throws an exception ("Object reference not set to an instance of an object."), although the array "allRowsNotGroupedInSelectedGroup2" is filled with rows.

 


 

  • 469350
    Verified Answer
    Offline posted

     Hi,

        GetAllNonGroupByRows is a method on a rows collection. You don't have to call it on the root level collection - what you want is to call it on the child rows collection under the selected GroupByRow.

        Something like this: 

                // Get the selected row and cast it to a GroupByRow, if possible.
                UltraGridGroupByRow groupByRow = this.ultraGrid1.Selected.Rows[0] as UltraGridGroupByRow;
               
                // Make sure that it really was a GroupByRow.
                if (groupByRow != null)
                {
                    // Get all of the selected GroupByRow's child rows that are not GroupByRows.
                    UltraGridRow[ childRows = groupByRow.Rows.GetAllNonGroupByRows();

                    // Clear any existing selection.
                    this.ultraGrid1.Selected.Rows.Clear();

                    // Select all the child rows.
                    if (childRows != null && childRows.Length > 0)
                        this.ultraGrid1.Selected.Rows.AddRange(childRows);
                }