I am utilizing a asp.net Listview control which is causing a Failed to load viewstate error after a row is put in edit mode and the user clicks either update or cancel.
The ListView control is in an ascx User control that is hosted in a parent aspx page. The parent aspx code-behind calls the a bind method on the ascx page which in turn binds the ListView.
I am trying to isolate where and how this is happening but have not had any success and frankly I am out of ideas. Please offer some suggestions on what I should be looking at.
Thank you.
Here is the ViewState load error.
Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request. 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.Web.HttpException: Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request.
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:
[HttpException (0x80004005): Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request.] System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +303 System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +134 System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +218 System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +134 System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +218 System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +134 System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +218 System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +134 System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +218 System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +134 System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +218 System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +134 System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +218 System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +134 System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +218 System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +134 System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +218 System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +134 System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +218
[TargetInvocationException: Exception has been thrown by the target of an invocation.] System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner) +0 System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner) +71 System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) +261 System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +29 System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters) +19 Syncfusion.Web.UI.WebControls.CallbackControlEnabler.ViewStateToLoad(Object state) +229 Syncfusion.Web.UI.WebControls.CallbackControlEnabler.LoadViewState(Object savedState) +369 Syncfusion.Web.UI.WebControls.CallbackWebControl.LoadViewState(Object savedState) +127 System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +183 System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +134 System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +218 System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +134 System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +218 System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +134 System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +218 System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +134 System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +218 System.Web.UI.Page.LoadAllState() +312 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1661