asp.net アプリケーションで webmethod を呼び出すと、例外が発生します。そして、私はSql Server Dbでセッションをソートしています。
<sessionState mode="SQLServer"
allowCustomSqlDatabase="true"
sqlConnectionString="Password=Shiny365;Data Source=192.168.0.102;Integrated Security=false;Initial Catalog=test;User ID=sa" timeout="1440"/>
これが私のコードです。
[WebMethod]
[ScriptMethod(UseHttpGet = true)]
public static object GetMenusByTabId(int tabId)
{
var menuManager = new MenuManager();
List<MenuManager> menus = null;
AgencyManager user = (AgencyManager)HttpContext.Current.Session["UserCredential"];
if (user == null)
return new { status = false };
menus = menuManager.GetAllMenusByTabId(tabId, user.RoleId);
HttpContext.Current.Session["MenusWithActivities"] = menus;
List<MenuManager> parentMenus = menus
.Where(m => m.ParentId == 0)
.ToList<MenuManager>();
foreach (var parentMenu in parentMenus)
{
parentMenu.Children = menus
.Select(m => new
{
ParentId = m.ParentId,
MenuId = m.MenuId,
Name = m.Name,
Url = m.Url,
Icon = m.Icon,
ActivityView = m.ActivityView
})
.Where(m => m.ParentId == parentMenu.MenuId && m.ActivityView==true)
.ToList<object>();
}
return parentMenus.Select(m => new
{
MenuId = m.MenuId,
Name = m.Name,
Icon = m.Icon,
Children = m.Children
});
}
MenuManagerandAgencyManagerをシリアル化可能としてマークしました。
このWebMethodを呼び出すと、次のエラーが発生します。
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.
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: 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.
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:
[SerializationException: Type '<>f__AnonymousType2`6[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]' in Assembly 'App_Web_oi13h5hv, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' is not marked as serializable.]
System.Runtime.Serialization.FormatterServices.InternalGetSerializableMembers(RuntimeType type) +10458455
System.Runtime.Serialization.FormatterServices.GetSerializableMembers(Type type, StreamingContext context) +230
System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitMemberInfo() +121
System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter, SerializationBinder binder) +178
System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.Serialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter, SerializationBinder binder) +51
System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Serialize(Object graph, Header[] inHeaders, __BinaryWriter serWriter, Boolean fCheck) +540
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph, Header[] headers, Boolean fCheck) +131
System.Web.Util.AltSerialization.WriteValueToStream(Object value, BinaryWriter writer) +1666
[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) +1754
System.Web.SessionState.SessionStateItemCollection.WriteValueToStreamWithAssert(Object value, BinaryWriter writer) +34
System.Web.SessionState.SessionStateItemCollection.Serialize(BinaryWriter writer) +628
System.Web.SessionState.SessionStateUtility.Serialize(SessionStateStoreData item, Stream stream) +240
System.Web.SessionState.SessionStateUtility.SerializeStoreData(SessionStateStoreData item, Int32 initialStreamSize, Byte[]& buf, Int32& length, Boolean compressionEnabled) +62
System.Web.SessionState.SqlSessionStateStore.SetAndReleaseItemExclusive(HttpContext context, String id, SessionStateStoreData item, Object lockId, Boolean newItem) +135
System.Web.SessionState.SessionStateModule.OnReleaseState(Object source, EventArgs eventArgs) +798
System.Web.SessionState.SessionStateModule.OnEndRequest(Object source, EventArgs eventArgs) +139
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +136
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +69