This is the error I get. Removing all numeric columns and the error goes away

 

Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.] Telerik.Web.UI.GridHeaderContextMenu.get_FilterNumericBoxFirstCondition() +85 Telerik.Web.UI.RadGrid.SerializeColumnDataForContextFilterMenu(GridColumn column, GridTableView tableView, Dictionary`2 _columnData) +1132 Telerik.Web.UI.RadGrid.InitializeDesktopGridTableViewData(GridTableView tableView, Dictionary`2 data) +15042 Telerik.Web.UI.RadGrid.InitializeGridTableViewData(GridTableView tableView) +97 Telerik.Web.UI.RadGrid.InitializeGridTableViewsRecursive(GridTableView tableView) +77 Telerik.Web.UI.RadGrid.DescribeProperties(IScriptDescriptor descriptor) +4548 Telerik.Web.UI.RadGrid.DescribeComponent(IScriptDescriptor descriptor) +49 Telerik.Web.UI.RadCompositeDataBoundControl.Telerik.Web.IControl.DescribeComponent(IScriptDescriptor descriptor) +42 Telerik.Web.UI.ScriptRegistrar.GetScriptDescriptors(Control control) +184 Telerik.Web.UI.ScriptRegistrar.GetScriptDescriptors(WebControl control) +31 Telerik.Web.UI.RadCompositeDataBoundControl.GetScriptDescriptors() +30 Telerik.Web.UI.RadCompositeDataBoundControl.System.Web.UI.IScriptControl.GetScriptDescriptors() +43 System.Web.UI.ScriptControlManager.RegisterScriptDescriptors(IScriptControl scriptControl) +128 System.Web.UI.ScriptManager.RegisterScriptDescriptors(IScriptControl scriptControl) +49 Telerik.Web.UI.RadCompositeDataBoundControl.RegisterScriptDescriptors() +74 Telerik.Web.UI.RadCompositeDataBoundControl.RenderContents(HtmlTextWriter writer) +67 Telerik.Web.UI.RadGrid.RenderContents(HtmlTextWriter writer) +94 Telerik.Web.UI.GridBaseDataList.Render(HtmlTextWriter writer) +122 Telerik.Web.UI.RadGrid.Render(HtmlTextWriter writer) +195 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 Telerik.Web.UI.ControlRenderer.Render(HtmlTextWriter writer) +147 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +208 System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +8 System.Web.UI.Control.Render(HtmlTextWriter writer) +10 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +208 System.Web.UI.UpdatePanel.RenderChildren(HtmlTextWriter writer) +256 System.Web.UI.UpdatePanel.Render(HtmlTextWriter writer) +37 Telerik.Web.UI.OurUpdatePanel.Render(HtmlTextWriter writer) +461 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 Telerik.Web.UI.PreControlToAjaxify.Render(HtmlTextWriter writer) +190 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +208 System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +8 System.Web.UI.Control.Render(HtmlTextWriter writer) +10 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +208 System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +173 System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +31 System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output) +53 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100 System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +40 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +208 System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +8 System.Web.UI.Control.Render(HtmlTextWriter writer) +10 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +208 System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +8 System.Web.UI.Page.Render(HtmlTextWriter writer) +29 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 Telerik.Web.UI.RadAjaxControl.RenderPageInAjaxMode(HtmlTextWriter writer, Control page) +1108 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +109 System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +8 System.Web.UI.Page.Render(HtmlTextWriter writer) +29 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3060 ​

I am trying to drag a row from RadGrid and drop to RadTreeView. I looked at some old demos, but they don't seem to be working for me.

Please help.

Hi,

My wizard has multiple pages and each page has a splitter, something like this:

 

I just want to check that what I am doing is correct and is supported because I am seeing some strange behaviour where two different splitter's 'ResizeWithParentPane' settings are affecting each other.

 

Hello,

I create dynamically RadComboboxes and change properties when some informations are choose but when my page is refresh with the postBack i can't see the change because they haven't ajaxified. So ... What is the syntax for ajaxified on server-side these RadComboboxes ?

 

Thanks a lot for your help,

Alexander

I am using AjAX RAD CONTROLS 2012. I have a radgrid setup with a master/details hierarchy and everything works well. Also note that in the details row I have a details table with a button. When the button is presses it fires the OnItemCommand. The only problem is that when The OnItemCommand event command fires with the master/details hierarchy opened and in the OnItemCommand event a call to the grid’s rebind method the hierarchy collapses. What is the best way to keep the master/details stay opened on a rebind?

Thanks for all of your help.


Steve Holdorf

Hello Team,
                   How to pass ResourceType values to another ResourceType when i select a value  from  ResourceType i need selected value to be placed in another ResourceType in telerik scheduler.

 <telerik:radscheduler id="MyRadSchedulerRD" runat="server" datakeyfield="ID" datastartfield="Start"

                                            advancedform-enablecustomattributeediting="true" datasubjectfield="Subject" daystarttime="08:00:00"
                                            dayendtime="21:00:00" timezoneoffset="00:00:00" datadescriptionfield="Description"
                                            dataendfield="End" width="800px" skin="Default" onappointmentcommand="RadScheduler1_AppointmentCommand"
                                            onformcreated="RadScheduler1_FormCreated" onappointmentupdate="RadScheduler_AppointmentUpdate"
                                            overflowbehavior="Expand" onclientappointmentediting="OnClientAppointmentEditing"
                                            startinsertinginadvancedform="true" datarecurrencefield="" onclienttimeslotclick="insertAppointment"
                                            onclientappointmentclick="editAppointment">
                                            <%--<AdvancedForm EnableResourceEditing="false" />--%>
                                             <AdvancedForm Modal="true"></AdvancedForm>                                             
                                             <WeekView HeaderDateFormat="dd/MM/yyyy"></WeekView>
                                            <AppointmentTemplate>
                                                <span><b>
                                                    <%# Eval("Subject") %>:&nbsp;</b></span><span style="font-style: italic;">
                                                        <%# Eval("Description") %></span>
                                                         <span style="font-style: italic;"></span>                                                                                                            
                                     
                                            </AppointmentTemplate>

                                          <%--   <ResourceTypes>
                                                                 <telerik:radcombobox id="ddAssigns" runat="server" width="200" height="200" emptymessage="Select User"
                                            datasourceid="ObjectDataSourceAssignedTo" datatextfield="OName" datavaluefield="AssignTo">
               </telerik:radcombobox>
                                             </ResourceTypes>--%>
                                             <ResourceTypes>
                                                <telerik:ResourceType KeyField="ViewATFlag" Name="Type*" TextField="ViewATFlagText" ForeignKeyField="ViewATFlag"
                                                    DataSourceID="ObjectDataSourceTypes" />
                                            </ResourceTypes>
                                              <ResourceTypes>
                                                <telerik:ResourceType KeyField="AssignTo" Name="Assigned To*" TextField="OName" ForeignKeyField="AssignTo"
                                                    DataSourceID="ObjectDataSourceAssignedTo" />
                                            </ResourceTypes>
                                            <ResourceTypes>
                                                <telerik:ResourceType KeyField="Apptype" Name="Property Type*" TextField="ResType" ForeignKeyField="Apptype"
                                                    DataSourceID="Propertytype" />
                                            </ResourceTypes>
                                            <ResourceTypes>
                                               <telerik:ResourceType KeyField="PropTo" Name="Sale*" TextField="OProp" ForeignKeyField="PropTo"
                                                    DataSourceID="ObjectDataSourcePropTo" />
                                            </ResourceTypes>
                                            <%--<ResourceTypes>
                                               <telerik:ResourceType KeyField="PropTolet" Name="Letting*" TextField="OProplet" ForeignKeyField="PropTolet"
                                                    DataSourceID="ObjectDataSourcePropTolet" />
                                            </ResourceTypes>                                                              
                                                           --%>   
                                            <ResourceTypes>
                                                <telerik:ResourceType KeyField="ViewValFlag" Name="Flag" TextField="ResText" ForeignKeyField="ViewValFlag"
                                                    DataSourceID="ObjectDataSourceResource" />
                                            </ResourceTypes>          
                                            <ResourceTypes>
                                                <telerik:ResourceType KeyField="AppStatus" Name="Status*" TextField="ResText" ForeignKeyField="AppStatus"
                                                    DataSourceID="AppointmentTypesDataSource" />
                                            </ResourceTypes>
                                            <ResourceStyles>
                                                <telerik:ResourceStyleMapping Key="1" Text="Viewing" ApplyCssClass="rsCategoryBlue" />
                                                <telerik:ResourceStyleMapping Key="2" Text="Valuation" ApplyCssClass="rsCategoryRed" />
                                                <telerik:ResourceStyleMapping Key="3" Text="Follow Up" ApplyCssClass="rsCategoryGreen" />
                                            </ResourceStyles>                                                                       
                                        </telerik:radscheduler>​

I use Rad Editor on Sitecore.

(Sitecore is a CMS tool .http://www.sitecore.net/)

 As described below , span tags are erased one .

 

　<span class="link-blank-right">
    <span class="icn"><a href="#">sample</a></span>
    </span>
    ↓↓↓
    <span class="icn"><a href="#">sample</a></span>

 

This is what I will reproduce even in the demo site .

http://demos.telerik.com/aspnet-ajax/editor/examples/overview/defaultcs.aspx

Please tell me how to resolve .

 

I have Page A and Page B. Page A has "RadWindow" panel which show on condition and Page B is the "Thank you page". When user goes from Page A to Page B using submit button. So Page A is cached. When user clicks back button on browser in Page B. users are seeing cached page and it is never hitting to server check validation. So I used below code to remove cache

 

If I use above code I page is load blank page (shown below). because it lost data. User doesn't like this page to display. So they don't want to display. Is it possible reload page when we pressed back button? How?

 

If I dont show RadWindow, I can hit to server for validation. Is there anyway we can handle from RadControls?

I am trying to run code behind when a row is deleted but am having trouble triggering OnDeleteCommand. It doesn't even seem like it is posting back which seems to be related to ajax but am not sure what I need to add or change to get it to trigger.

VB:

 ASPX:

Hi,
I have implemented custom export functionality to export RadGrid data.
I have added a menu “Export All Columns” to HeaderContextMenu of Grid, which when clicked Grid data should be exported to CSV.

RadGrid is ajaxified using RadAjaxManager:
    <telerik:RadAjaxManager runat="server" ID="RadAjaxManager1" OnAjaxRequest="RadAjaxManager1_AjaxRequest">
        <telerik:AjaxSetting AjaxControlID="RadAjaxManager1">
            <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="PanelVendor" />
                    <telerik:AjaxUpdatedControl ControlID="pnlGrid" LoadingPanelID="RadAjaxLoadingPanel1" />
                <telerik:AjaxUpdatedControl ControlID="RadWindowManager1" />
            </UpdatedControls>
        </telerik:AjaxSetting>        <AjaxSettings>
        <telerik:AjaxSetting AjaxControlID="UsersGrid">
            <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="UsersGrid" />
            </UpdatedControls>
        </telerik:AjaxSetting>
        </AjaxSettings>
    </telerik:RadAjaxManager>

Following this link http://www.telerik.com/support/code-library/export-radgrid-content-to-excel-word-csv-pdf-with-ajax-enabled , I have added javascript code to disable ajax and make standard postback:
function onRadAjaxRequestStart(ajaxManager, eventArgs) {
    if (eventArgs.EventTargetElement.value != undefined && eventArgs.EventTargetElement.value.indexOf("Export") != -1) {
        eventArgs.set_enableAjax(false);
        ajaxManager.set_enableAJAX(false);
    }
}

Now this all works fine and data is exported to CSV when “Export All Columns” header menu is clicked.
But the RadAjaxLoadingPanel is displayed on the grid and it does not go away even after CSV is downloaded.

What do I need to do so that RadAjaxLoadingPanel does not appear while exporting?