We are using RadPivotGrid and was working fine until we change the sessionState to SQLServer. And now getting the error:

Unable to serialize the session state. In 'StateServer' and 'SQLServer' mode, ASP.NET will serialize the session state objects, and as a result non-serializable objects or MarshalByRef objects are not permitted. The same restriction applies if similar serialization is done by the custom session state store in 'Custom' mode.

 Stack Trace:

 [SerializationException: Type 'Telerik.Web.UI.PivotGrid.Core.ViewModels.PivotViewModel' in Assembly 'Telerik.Web.UI, Version=2015.1.401.45, Culture=neutral, PublicKeyToken=121fae78165ba3d4' is not marked as serializable.]
System.Runtime.Serialization.FormatterServices.InternalGetSerializableMembers(RuntimeType type) +14052545
System.Runtime.Serialization.FormatterServices.GetSerializableMembers(Type type, StreamingContext context) +408
System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitMemberInfo() +420
System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter, SerializationBinder binder) +532
System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.Serialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter, SerializationBinder binder) +270
System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Serialize(Object graph, Header[] inHeaders, __BinaryWriter serWriter, Boolean fCheck) +814
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph, Header[] headers, Boolean fCheck) +322
System.Web.Util.AltSerialization.WriteValueToStream(Object value, BinaryWriter writer) +1487

[HttpException (0x80004005): Unable to serialize the session state. In 'StateServer' and 'SQLServer' mode, ASP.NET will serialize the session state objects, and as a result non-serializable objects or MarshalByRef objects are not permitted. The same restriction applies if similar serialization is done by the custom session state store in 'Custom' mode.]
System.Web.Util.AltSerialization.WriteValueToStream(Object value, BinaryWriter writer) +2252815
System.Web.SessionState.SessionStateItemCollection.WriteValueToStreamWithAssert(Object value, BinaryWriter writer) +49
System.Web.SessionState.SessionStateItemCollection.Serialize(BinaryWriter writer) +729
System.Web.SessionState.SessionStateUtility.Serialize(SessionStateStoreData item, Stream stream) +336
System.Web.SessionState.SessionStateUtility.SerializeStoreData(SessionStateStoreData item, Int32 initialStreamSize, Byte[]& buf, Int32& length, Boolean compressionEnabled) +99
System.Web.SessionState.SqlSessionStateStore.SetAndReleaseItemExclusive(HttpContext context, String id, SessionStateStoreData item, Object lockId, Boolean newItem) +3538988
System.Web.SessionState.SessionStateModule.OnReleaseState(Object source, EventArgs eventArgs) +1021
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +92
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +165

Hi,

I have a diagramming application which uses a RadToolBar to set attributes such as Bold, Italic and Underline - pretty standard stuff.

The RadToolBarButton's need to serve a dual purpose:

1. To set the attribute (e.g., Bold) of the selected object
2. To indicate the attribute setting for the selected object

I am using the check() method of the item to "highlight" it if the selected shape has that attribute set.

Unfortunately it seems that only 1 item can be checked at a time.

How do I go about checking/selecting/highlighting multiple toolbarbutton's?

Thanks in advance for any suggestion and code snippets.

Jim

Hai, i have a CommandItemTemplate at my grid, and i want to add CommandItem Refresh.

i've done it like this:

but it doesn't show the Refresh Button. How to show it?

Thank you

​

Hi,

My wizard uses postback on ActiveStepChanged, whenever Next is clicked then the cancel button appears and disappears during the postback. If I ajax the control then this seems to work, is it unusual to do this?:

The problem is that this only works when the wizard has only text, as soon as I have grid's etc. on wizard steps when I get ajax errors. Removing the code above  makes the errors disappear.

Hi,

If the user clicks next, is there a way to cancel the move to the next tab in ActiveStepChange?  or even just to set the active step back to the previous step.