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Object reference not set to an instance of an object
posted

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

I have a webdatagrid Infragistics NetAdvantage 2011.2 defined as follows

<asp:UpdatePanel ID="up_gridCustomers" runat="server" ChildrenAsTriggers="False" UpdateMode="Conditional">
<ContentTemplate>
<ig:WebDataGrid ID="uwg_gridCustomers" runat="server" Height="300px" StyleSetName="XSALESNRO1" StyleSetPath="~/ig_res" AutoCRUD="true"  Width="800px" DefaultColumnWidth="100px" AutoGenerateColumns="True">                                                                                           
 <Behaviors>      
<ig:Selection RowSelectType="Single" Enabled="true" />                                                                                  
<ig:Paging PagerAppearance="Bottom" PageSize="50" Enabled="true" />
<ig:RowSelectors Enabled="true" RowNumbering="true" />
<ig:ColumnMoving Enabled="true" />
<ig:ColumnResizing Enabled="true" />
<ig:Filtering Alignment="Top" Visibility="Visible" Enabled="true" AnimationEnabled="true" />
<ig:Sorting SortingMode="Single" Enabled="true" />                                                                                                                                                                                       
<ig:VirtualScrolling Enabled="true" ScrollingMode="Deferred" />
</Behaviors>                                                                                           
</ig:WebDataGrid>                                                                                                                                                                           
</ContentTemplate>
</asp:UpdatePanel>

 

When I select a row I works perfect.

But when I select a cell and then pressed link_button any object that has a process for the server side it generates the following message

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

 

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

- <Errors xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

  <Procedure>/content/editTablesCustomers.a</Procedure>

  <Date>2/13/2012 2:38:58 PM</Date>

  <Message>Object reference not set to an instance of an object.</Message>

  <StackTrace>at Infragistics.Web.UI.GridControls.Selection.LoadPositionalProperty(Int32 index, Object value) at Infragistics.Web.UI.Framework.ObjectBase.LoadClientPropsTransactionList(Dictionary`2 list) at Infragistics.Web.UI.GridControls.Selection.LoadClientPropsTransactionList(Dictionary`2 list) at Infragistics.Web.UI.Framework.ObjectBase.LoadTransactionList(Boolean deferLoadPostDataProcessing) at Infragistics.Web.UI.Framework.ObjectBase.Infragistics.Web.UI.IClientState.LoadTransationList(Boolean deferLoadPostDataProcessing) at Infragistics.Web.UI.GridControls.GridBot.LoadClientObjectsTransactionList() at Infragistics.Web.UI.Framework.RunBot.HandleRaisePostDataChangedEvent() at Infragistics.Web.UI.GridControls.GridBot.HandleRaisePostDataChangedEvent() at Infragistics.Web.UI.Framework.Data.FlatDataBoundControl.RaisePostDataChangedEvent() at System.Web.UI.Page.RaiseChangedEvents() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)</StackTrace>

  </Errors>

 

Be possible that can help me on how to solve this problem?