I am getting the following error when using RadMultiSelect with over 13000 records:

Error InnerException Message: Error during serialization or deserialization using the JSON JavaScriptSerializer. The length of the string exceeds the value set on the maxJsonLength property.
 Error InnerException StackTrace:    at System.Web.Script.Serialization.JavaScriptSerializer.Serialize(Object obj, StringBuilder output, SerializationFormat serializationFormat)
   at Telerik.Web.UI.AdvancedJavaScriptSerializer.Serialize(Object obj)
   at Telerik.Web.UI.RadMultiSelect.DescribeItems(IScriptDescriptor descriptor)
   at Telerik.Web.UI.RadMultiSelect.DescribeComponent(IScriptDescriptor descriptor)
   at Telerik.Web.UI.ScriptRegistrar.GetScriptDescriptors(Control control)
   at Telerik.Web.UI.RadDataBoundControl.GetScriptDescriptors()
   at System.Web.UI.ScriptControlManager.RegisterScriptDescriptors(IScriptControl scriptControl)
   at Telerik.Web.UI.RadDataBoundControl.RegisterScriptDescriptors()
   at Telerik.Web.UI.RadDataBoundControl.Render(HtmlTextWriter writer)
   at Telerik.Web.UI.RadMultiSelect.Render(HtmlTextWriter writer)
   at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)

I already have <jsonSerialization maxJsonLength="2147483647"> in my web.config but still errors out.

Telerik.Web.UI Version: 2022.2.622.45

Seems similar to this issue: https://www.telerik.com/forums/maxjsonlength-exceeded-in-radmap

But updating to higher version than 2020 didn't seem to solve it. Was the fix only for RadMap?

Hello,

is it possible to show the Marker Tooltips initially (code behind)?

i didnt find any example.

I have a large dataset of employees.

I want to load one node initially and all other node collapsed and load other node on demand.

But this control is loading complete data on page load which is making it slow.

is there any way to rebind the org chart on expand and bind all child nodes?

RadEditor is closing the source element that is nested inside the video element . For example, in the attached screen shots show the “source” element which we add it to Rich text field. After we save the Rich Text field and open it again, we see the source element is closed. Is there a configuration setting that would allow us to bypass the closure of the source element?

Hi,

I'm getting the following exception multiple time throughout the application in error log. It's very difficult to identify the exact reason for exception occurrence as the application is vast to debug in depth. Also, I'm using Telerik Control as well as Telerik Reporting in multiple place in the application. The version of Telerik.Web.UI which I am currently using is 2023.1.323.45

EXCEPTION URL :

https://adba.roc-p.com:443/Telerik.Web.UI.WebResource.axd?type=rau

EXCEPTION MESSAGE :

System.ArgumentException: Illegal characters in path.     at System.IO.Path.CheckInvalidPathChars(String path, Boolean checkAdditional)     at System.IO.Path.GetExtension(String path)     at Telerik.Web.UI.AsyncUploadHandler.ProcessUploadedFile()     at Telerik.Web.UI.HandlerRouter.ProcessHandler(String handlerKey, HttpContext context)     at Telerik.Web.UI.WebResource.ProcessRequest(HttpContext context)     at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()     at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)     at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Can anyone please provide all the possible reason behind this exception along with its step to resolve. Any help will be highly appreciated!

NOTE :

I have already visited multiple forum in which it is mentioned that this issue occurs in the previous version of the Telerik.Web.UI. Please confirm whether the exception mentioned above still exist in the version of Telerik.Web.UI which I am currently using i.e. 2023.1.323.45. And If not then please provide the possible reason that we need to verify on our end.

I need to import a spreadsheet into a dataset. The spreadsheets have rows and columns of data, but some of the columns are totaled at the bottom. I think this is giving me error when trying to use the DataTableFormatProvider.Export.

So I want to open the file and read the cells row by row. Are there any examples on how to open a spreadsheet and walk through it row by row?

I'd like to use the tab strip as a filter for a RadGrid below it -- meaning, I won't be using a multipage view but rather every tab will have the same content, just the filter for the radgrid will change based on which tab is selected.

I am using a hierarchical tab scenario, so the primary tabs (pid's are null, therefore root) are usernames, and the underlying ones are prior years of tickets they had. This all works perfectly -- top tabs are their names, and when they click on them, the "current year" of tickets as well as any tickets that are still open are shown (even if they're from prior years). If they want to look at past years, they'd just click on the tab that represents that year number. Each click event fires off a re-bind for the RadGrid below.

All works fine, except for this one problem - once a tab is active, if a user clicks that same tab again, I don't get another click event firing. I'd like to use this re-click as a "refresh" event (meaning the datagrid would re-query the underlying datasource to get up to the minute results).

In the attached picture, if a user selects the first tab (ChCurrier), then selects 2022 to look at last year's tickets, there is no way for him to then re-select the current year's tickets by clicking on ChCurrier again - the click event won't fire because it's already active/selected.