Hi EvenChen,

I have investigated your scenario but am so far unable to replicate your issue. 

In order to research this matter I would need to know what version of .NetAdvantage you are using. A sample which demonstrates the issue would be greatly appreciated. It would also help to know the type and size (# of rows) of your data source.

Please contact me if you have any questions.

Best Regards,

Petar Ivanov
Developer Support Engineer
Infragistics, Inc.
http://es.infragistics.com/support

Petar Ivanov
Developer Support Engineer
Infragistics, Inc.
http://es.infragistics.com/support

Petar Ivanov
Developer Support Engineer
Infragistics, Inc.
http://es.infragistics.com/support

Hi, I do have the same problem with my datagrid and am using version 2010 Vol3. Refer to this post for my code: http://community.infragistics.com/forums/p/60820/310160.aspx#310160

What is interesting is that I load my grid with 2 different set of data: 1 is returning me the error when I sort (filter, etc.) on the second try, but not the other set of data. When seeing that, I assumed the problem was with my datasource objects that could have a serialization problem. I changed my object list to something simpler for my testing and I still get the same error.

I dynamically create my columns:

if (this.Parameters.ReportValues.ReportId == DeserializationFailureReport)
      {
         this.AddColumn("Number", "Number", String.Empty, 7, typeof(string));
        this.AddColumn("Type", "Type", String.Empty, 9, typeof(string));
        this.AddColumn("Date", "Time", "{0:dd/MM/yyyy HH:mm:ss}", 13, typeof(DateTime));
        this.AddColumn("ErrorCode", "Code", String.Empty, 5, typeof(int));
        this.AddColumn("ErrorDescription", "Error", String.Empty, 40, typeof(string));
        this.AddColumn("Address", "Location", String.Empty, 22, typeof(string));
      }
      else if (this.Parameters.ReportValues.ReportId == WorkingReport)
      {
           this.AddColumn("Number", "Number", String.Empty, 7, typeof(string));
          this.AddColumn("ype", "Type", String.Empty, 9, typeof(string));
          this.AddColumn("Start", "Start", "{0:dd/MM/yyyy HH:mm:ss}", 13, typeof(DateTime));
          this.AddColumn("End", "Stop", "{0:dd/MM/yyyy HH:mm:ss}", 13, typeof(DateTime));
          this.AddColumn("Distance", "Distance (Km)", "{0:#0.###}", 8, typeof(Decimal));
          this.AddColumn("TimeInMinutes", "Time (hh:mm:ss)", "{0:hh\\:mm\\:ss}", 6, typeof(TimeSpan),  new FormatRecordItemValue(FormatTimeSpan));
          this.AddColumn("Qty1", "Qty1", "{0:#0.##}", 6, typeof(Decimal));
          this.AddColumn("Qty2", "Qty2", "{0:#0.##}", 6, typeof(Decimal));
          this.AddColumn("Qty3", "Qty3", "{0:#0.##}", 8, typeof(Decimal));
          this.AddColumn("Qty4", "Qty4", "{0:#0.##}", 6, typeof(Decimal));
          this.AddColumn("Qty5", "Qty5", "{0:#0.##}", 6, typeof(Decimal));
          this.AddColumn("Qty6", "Qty6", "{0:#0.##}", 6, typeof(Decimal));
      }
}

for my testing, I gave the grid a List<Test> object and Test is defined as:

[Serializable]
      public class Test
      {
          private string _number;
            private string _type;
            private DateTime _date;
            private int _errorCode;
            private string _errorDescription;
            private string _address;
            private int _report;

            public string Number
          {
              get
              {
                  return _number;
              }
              set
              {
                 _number = value;
              }
          }

        public string Type
          {
              get
              {
                  return _Type;
              }
              set
              {
                  _Type = value;
              }
          }

        public DateTime Date
          {
              get
              {
                  return _date;
              }
              set
              {
                  _date = value;
              }
          }

        public int ErrorCode
          {
              get
              {
                  return _errorCode;
              }
              set
              {
                  _errorCode = value;
              }
          }

        public string ErrorDescription
          {
              get
              {
                  return _errorDescription;
              }
              set
              {
                  _errorDescription = value;
              }
          }

        public string Address
          {
              get
              {
                  return _address;
              }
              set
              {
                  _address = value;
              }
          }

        public int Report
        {
            get
            {
                return _report;
            }
            set
            {
                _report = value;
            }
        }

      }

I populate the list, then I call this:

 this.reportDataIGGrd.ClearDataSource();
this.reportDataIGGrd.DataKeyFields = "Report";
this.reportDataIGGrd.DataSource = lst;
this.reportDataIGGrd.DataBind();

In the page_load, I set the datasource back with the list when filtering, sorting or paging is done:

if (!String.IsNullOrEmpty(this.Request.Form["hdnGridAction"]))
{
 this.reportDataIGGrd.DataSource = lst;
}

Here's my grid in the aspx:

<asp:UpdatePanel ID="dataGridUpdPnl" runat="server" >
                                <ContentTemplate>
                                    <input type="hidden" id="hdnGridAction" name="hdnGridAction" />
                                    <ig:WebDataGrid ID="reportDataIGGrd" runat="server" AutoGenerateColumns="false" InitialExpandDepth="-1"
                                         EnableDataViewState="true" DataKeyFields="Report" EnableAjax="true"
                                        AjaxIndicator-Enabled="True" AjaxIndicator-BlockArea="Control" AjaxIndicator-BlockCssClass="ig_AjaxIndicatorBlock" Height="100%" Width="100%"
                                        InitialDataBindingDepth="-1" >
                                        <Columns>
                                        </Columns>
                                        <Behaviors>
                                            <ig:Activation Enabled="true" />
                                            <ig:Selection RowSelectType="Multiple" CellClickAction="Row" Enabled="true" />
                                            <ig:Sorting SortingMode="Single" Enabled="true"  SortingClientEvents-ColumnSorting="SetGridAction" SortingClientEvents-ColumnSorted="ClearGridAction"/>
                                            <ig:Filtering Alignment="Top" Visibility="Visible" Enabled="true" AnimationEnabled="true" FilteringClientEvents-DataFiltering="SetGridAction" FilteringClientEvents-DataFiltered="ClearGridAction"  />
                                            <ig:Paging PagerAppearance="Both" PagerMode="NumericFirstLast"    PagingClientEvents-PageIndexChanging="SetGridAction" PagingClientEvents-PageIndexChanged="ClearGridAction"
                                                    QuickPages="3" PageSize='<%$ appSettings:PageSize_ReportDataMapGrid%>'
                                                    FirstPageText="First" LastPageText="Last" > 
                                                </ig:Paging>
                                        </Behaviors>
                                        <EmptyRowsTemplate>
                                            <div style="text-align: center;">
                                                <br />
                                                <br />
                                                <img src="Images/information.gif" alt="!" align="middle" />
                                                &nbsp;&nbsp;&nbsp;
                                                <asp:Label ID="noDataLabel" runat="server" Text="No records found." Font-Size="Small"
                                                    ForeColor="#000099" Font-Bold="True">
                                                </asp:Label>
                                            </div>
                                        </EmptyRowsTemplate>
                                        <ErrorTemplate>
                                            <div style="text-align: center; width: 800px;">
                                                <img src="Images/error.png" alt="!" align="middle" />
                                                &nbsp;&nbsp;&nbsp;
                                                <asp:Label ID="errorLabel" runat="server" Text="An error has occurred! Please contact support."
                                                    Font-Size="Small" ForeColor="#CC0000" Font-Bold="True">
                                                </asp:Label>
                                            </div>
                                        </ErrorTemplate>
                                        <ClientEvents Initialize="intializeGrid" />
                                       
                                    </ig:WebDataGrid>
                                   
                                </ContentTemplate>
                                <Triggers>
                                    <asp:AsyncPostBackTrigger ControlID="btnClear" EventName="Click" />
                                </Triggers>
                            </asp:UpdatePanel>