FireandForget delegate - c#
- by uno
I came across this link, link text
In the article, where the author has definition of this method
static void WriteIt(string first, string second, int num)
I changed that in my test app to this
static void WriteIt(CustomerObject Customer)
{
fileIO.CreateFile(XMLUtil.Serialize(Customer));
}
Where
public static string Serialize(object o)
{
System.Xml.Serialization.XmlSerializerNamespaces ns = new System.Xml.Serialization.XmlSerializerNamespaces();
ns.Add("", "");
return Serialize(o, ns);
}
public static string Serialize(object o, XmlSerializerNamespaces ns)
{
try
{
using (System.IO.MemoryStream m = new System.IO.MemoryStream())
{
//serialize messagelist to xml
XmlSerializer serializer = new XmlSerializer(o.GetType(), "");
if (ns != null)
serializer.Serialize(m, o, ns);
else
serializer.Serialize(m, o);
m.Position = 0;
byte[] b = new byte[m.Length];
m.Read(b, 0, b.Length);
return System.Text.UTF8Encoding.UTF8.GetString(b);
}
}
catch (Exception ex)
{
return "Ex = " + ex.ToString();
}
}
This method always gives an exception
static void EndWrapperInvoke (IAsyncResult ar)
{
wrapperInstance.EndInvoke(ar);
ar.AsyncWaitHandle.Close();
}
Stacktrace:
Server stack trace:
at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
at System.Delegate.DynamicInvokeImpl(Object[] args)
at System.Delegate.DynamicInvoke(Object[] args)
at SRC.FileMover.ThreadUtil.InvokeWrappedDelegate(Delegate d, Object[] args)
at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs)
at System.Runtime.Remoting.Messaging.StackBuilderSink.PrivateProcessMessage(RuntimeMethodHandle md, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs)
at System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(IMessage msg, IMessageSink replySink)
Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.EndInvokeHelper(Message reqMsg, Boolean bProxyCase)
at System.Runtime.Remoting.Proxies.RemotingProxy.Invoke(Object NotUsed, MessageData& msgData)
at SRC.FileMover.ThreadUtil.DelegateWrapper.EndInvoke(IAsyncResult result)
at SRC.FileMover.ThreadUtil.EndWrapperInvoke(IAsyncResult ar)
at System.Runtime.Remoting.Messaging.AsyncResult.SyncProcessMessage(IMessage msg)
at System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(IMessage msg, IMessageSink replySink)
at System.Runtime.Remoting.Proxies.AgileAsyncWorkerItem.DoAsyncCall()
at System.Runtime.Remoting.Proxies.AgileAsyncWorkerItem.ThreadPoolCallBack(Object o)
at System.Threading._ThreadPoolWaitCallback.WaitCallback_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallbackInternal(_ThreadPoolWaitCallback tpWaitCallBack)
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback(Object state)
UPDATE 1:
Trying to run my app and get the full exception. It seems like its happening at different locations. I will repost my ? again shortly. I think it may be wise if I can post my application. Can i upload a .zip file or is it better to just post the .cs code that I am using?
