Hello,

When using the whdg i get the next error when having it filled with much data. Can you help me fix the problem?

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Async request failed
 

[InvalidOperationException]: Error during serialization or deserialization using the JSON JavaScriptSerializer. The length of the string exceeds the value set on the maxJsonLength property.

   at System.Web.Script.Serialization.JavaScriptSerializer.Serialize(Object obj, StringBuilder output, SerializationFormat serializationFormat)

   at System.Web.Script.Serialization.JavaScriptSerializer.Serialize(Object obj, StringBuilder output)

   at Infragistics.Web.UI.Framework.CallbackObject.GetResponse(String viewState, String eventValidation, Object[] additionalScripts)

   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)

[HttpUnhandledException]: Exception of type 'System.Web.HttpUnhandledException' was thrown.

   at System.Web.UI.Page.HandleError(Exception e)

   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

   at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

   at System.Web.UI.Page.ProcessRequest()

   at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context)

   at System.Web.UI.Page.ProcessRequest(HttpContext context)

   at ASP.action_aspx.ProcessRequest(HttpContext context) in c:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\daedc96b\c3d05c5f\App_Web_c0vxitgo.3.cs:line 0

   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()

   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

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I have just upgraded to the newest service release, so that won't be the problem. I also put an update in my web.config telling JSOn to have a length of 40000000, so that should not be the problem too. And the last thing i tried was add paging to the whdg, but that did not help either.

Any ideas would be very welcome.

this is my grid:

<ig:WebHierarchicalDataGrid ID="whdgAction" runat="server"
                        AutoGenerateBands="False" AutoGenerateColumns="False"
                        DataKeyFields="AccommodationId" DataMember="Accommodations" Height="600px"
                        Key="RootBand" oninit="whdgAction_InitializeGrid" Width="98%" CssClass="margin1pct">
                        <ClientEvents RowExpanded="rowExpanded" RowCollapsed="rowCollapsed"/>
                        <Bands>
                            <ig:Band AutoGenerateColumns="False" DataKeyFields="AccommodationId, PriceId"
                                DataMember="Packages" Key="ChildBand">
                                <Columns>
                                    <ig:TemplateDataField Key="checkField" Width="50px">
                                        <ItemTemplate>
                                            <div style="text-align: center;">
                                                <input type="checkbox" id="cCK<%# DataBinder.Eval(((Infragistics.Web.UI.TemplateContainer)Container).DataItem, "AccommodationId") %>"
                                                <%# (bool)DataBinder.Eval(((Infragistics.Web.UI.TemplateContainer)Container).DataItem, "Selected") == true ? "checked=\"checked\"" : "" %>
                                                onclick="selectChild(this)"/>
                                            </div>
                                        </ItemTemplate>
                                    </ig:TemplateDataField>
                                </Columns>
                            </ig:Band>
                        </Bands>
                        <Columns>
                            <ig:TemplateDataField Key="checkField" Width="50px">
                                <%--<HeaderTemplate>
                                    <div style="text-align: center;">
                                        <input type="checkbox" id="ckHeader" onclick="selectHeader()" />
                                    </div>
                                </HeaderTemplate>--%>
                                <ItemTemplate>
                                    <div style="text-align: center;">
                                        <input type="checkbox" id="pCK<%# DataBinder.Eval(((Infragistics.Web.UI.TemplateContainer)Container).DataItem, "AccommodationId")%>"
                                        onclick="selectParent(this)" disabled="disabled"/>
                                    </div>
                                </ItemTemplate>
                            </ig:TemplateDataField>
                        </Columns>
                        <Behaviors>
                            <ig:Filtering EnableInheritance="True">
                            </ig:Filtering>
                            <ig:EditingCore EnableInheritance="True">
                                <Behaviors>
                                    <ig:CellEditing EnableInheritance="True">
                                    </ig:CellEditing>
                                </Behaviors>
                            </ig:EditingCore>
                            <ig:Paging Enabled="true" PageSize="20">
                            </ig:Paging>
                        </Behaviors>
                    </ig:WebHierarchicalDataGrid>

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regards,

     René