Hi,

I have a webdatagrid were I enabled sorting, but it doesn't seem to work, I receive a javascript error.

Error: Sys.ArgumentException: Cannot deserialize. The data does not correspond to valid JSON.
Parameter name: data

Here you have a sample of the webdatagrid

<ig:WebDataGrid ID="WebDataGrid1" runat="server" DataKeyFields="ID" AutoGenerateColumns="False" EnableAjax="true" Width="602px" ShowFooter="true">
<Columns>
    <ig:TemplateDataField Key="DateTime" Width="150px">
        <ItemTemplate>
            <%#DataBinder.Eval(CType(Container, Infragistics.Web.UI.TemplateContainer).DataItem, "DateTime")%>
        </ItemTemplate>
        <Header Text="DateTime" />
    </ig:TemplateDataField>
    <ig:TemplateDataField Key="Component" Width="363px">
        <ItemTemplate>
            <%#DataBinder.Eval(CType(Container, Infragistics.Web.UI.TemplateContainer).DataItem, "Component")%>
        </ItemTemplate>
        <Header Text="Component" />
    </ig:TemplateDataField>
    <ig:TemplateDataField Key="Sevirity" Width="65px">
        <ItemTemplate>
            <img src="img/sevirity<%#DataBinder.Eval(CType(Container, Infragistics.Web.UI.TemplateContainer).DataItem, "Sevirity").ToString().Trim()%>.png" alt="" />
        </ItemTemplate>
        <Header Text="Sevirity" />
    </ig:TemplateDataField>
</Columns>
<Behaviors>
    <ig:Sorting SortingMode="Multi" Enabled="true">
        <ColumnSettings>
            <ig:SortingColumnSetting ColumnKey="DateTime" Sortable="true"/>
            <ig:SortingColumnSetting ColumnKey="Component" Sortable="true"/>
            <ig:SortingColumnSetting ColumnKey="Sevirity" Sortable="true"/>
        </ColumnSettings>
    </ig:Sorting>
</Behaviors>
</ig:WebDataGrid>

I have a DataTable which I bind to the WebDataGrid.

WebDataGrid1.DataSource = dt
WebDataGrid1.DataBind()

How can I fix this problem?

Edit:

I was able to catch the following information:

Source: Infragistics35.Web.v9.1

Class: Sorting

Stacktrace:

   at Infragistics.Web.UI.GridControls.Sorting.BehaviorEvents_PreRender(Object sender)
   at Infragistics.Web.UI.GridControls.GridBehaviorEvents.RenderingContentHandler.Invoke(Object sender)
   at Infragistics.Web.UI.GridControls.GridBehaviorEvents.OnRenderingContent()
   at Infragistics.Web.UI.GridControls.GridRenderer.RenderContents(HtmlTextWriter writer)
   at Infragistics.Web.UI.Framework.RunBot.HandleRenderContents(HtmlTextWriter writer, RendererBase renderer)
   at Infragistics.Web.UI.GridControls.WebDataGrid.GetRenderHTML()
   at Infragistics.Web.UI.GridControls.WebDataGrid.CallbackRender(CallbackObject callbackObject)
   at Infragistics.Web.UI.Framework.Data.FlatDataBoundControl.Infragistics.Web.UI.IControlCallback.CallbackRender(CallbackObject callbackObject)
   at Infragistics.Web.UI.Framework.RunBot.CallbackRenderRecursive(CallbackObject callbackObject)
   at Infragistics.Web.UI.Framework.RunBot.RenderFormCallBack(HtmlTextWriter writer, Control control)
   at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
   at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
   at System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer)
   at System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer)
   at System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output)
   at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
   at System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer)
   at Infragistics.Web.UI.Framework.RunBot.RenderPageCallBack(HtmlTextWriter writer, Control control)
   at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
   at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
   at System.Web.UI.Page.Render(HtmlTextWriter writer)
   at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)