Hi Team,

We are encountered some issue with Xamdatagrid control while using SelectedItems AddRange() method.

This issue occurred with 11.2 binaries.

Please find the code snippet.

PFXDataGrid is derived from XamDataGrid

/// <summary>

        /// Called when [select all].

        /// </summary>

        /// <param name="control">The control.</param>

        private static void OnSelectAll(PFXDataGrid control)

        {

            if (control.IsSelectAllAllowed)

            {

                if (control.Records != null && control.Records.Count > 0)

                {

                    control.OnSelectAllExecution = true;

                    allDataRecordColl.Clear();

                    Utility.GetAllDataRecordsofGrid(allDataRecordColl, control.ViewableRecords);

                    Record[] _records = new Record[allDataRecordColl.Count];

                    allDataRecordColl.CopyTo(_records, 0);

                    control.SelectedItems.Records.Clear();

                    control.SelectedItems.Records.AddRange(_records);

                    control.OnSelectAllExecution = false;

                }

            }

        }

/// <summary>

        /// Gets all data recordsof grid.

        /// </summary>

        /// <param name="allDataRecordColl">All data record coll.</param>

        /// <param name="records">The records.</param>

        public static void GetAllDataRecordsofGrid(IList<Record> allDataRecordColl, IList<Record> records)

        {  

            IList<Record> recColl = records as IList<Record>;

            foreach (Record rec in recColl)

            {

                if (rec is GroupByRecord || rec is ExpandableFieldRecord)

                {

                    GetAllDataRecordsofGrid(allDataRecordColl,rec.ViewableChildRecords);

                }

                else

                {                   

                    if (rec is DataRecord && rec.Index != -1)

                    {

                        allDataRecordColl.Add(rec);

                        if (rec.HasChildren)

                        {

                            GetAllDataRecordsofGrid(allDataRecordColl, rec.ViewableChildRecords);

                        }

                    }

                }

            }

        }

We are getting exception while setting AddRange method, Please find the attached screenshot for your kind reference.

control.SelectedItems.Records.AddRange(_records);

Stack Track details as below:

System.NullReferenceException occurred

  Message=Object reference not set to an instance of an object.

  Source=InfragisticsWPF4.DataPresenter.v11.2

  StackTrace:

       at Infragistics.Windows.DataPresenter.DataPresenterBase.SelectedItemHolder.SelectionPositionSortComparer.CompareRecord(Record recordX, Record recordY)

       at Infragistics.Windows.DataPresenter.DataPresenterBase.SelectedItemHolder.SelectionPositionSortComparer.CompareRecord(Record recordX, Record recordY)

       at Infragistics.Windows.DataPresenter.DataPresenterBase.SelectedItemHolder.SelectionPositionSortComparer.CompareRecord(Record recordX, Record recordY)

       at Infragistics.Windows.DataPresenter.DataPresenterBase.SelectedItemHolder.SelectionPositionSortComparer.CompareRecord(Record recordX, Record recordY)

       at Infragistics.Windows.DataPresenter.SelectedRecordCollection.AddRange(Record[] records, Boolean ensureRecordsOrdered, Boolean fireSelectionChangeEvent)

       at Infragistics.Windows.DataPresenter.SelectedRecordCollection.AddRange(Record[] records)

       at CCH.CommonUIFramework.Controls.PFXDataGrid.OnSelectAll(PFXDataGrid control) in D:\Guruprasad\CCH\R2011-4.11\Main\Common\Source\CommonControls\Controls\DataGrid\PFXDataGrid.cs:line 1722

  InnerException:

Thanks,

Guruprasad Gowda