External component has thrown an exception

#External component has thrown an exception windows#

We have had some success removing third party controls that probably do custom drawing etc, but our app uses a lot of third party controls and it is not acceptable for us to do this to any great extent.ДЄs far as the cause of the problem goes - I think it has something to do with the order in which the win32 window handles are created and how that differs when you call showdialog vs. I'm still stumped on this showdialog problem. We fixed the string measurement problems by centralising the functionality around a central measurestring method that used a form that was always around (like your main form/login form or whatever is appropriate) to measure the strings. In my project, which is encountering exactly the same problems, the problems have been caused by custom drawing and use of the CreateGraphics method on a control to do string measurement. I found a thread early last year that I have since lost that explained some of the issues that might be causing this. I have a similarly horrible problem that I can't replicate. No-one has ever heard of this or can think of anything that could cause it !! 13:58:47,850 ERROR - : External component has thrown an exception.ДЄt ()ДЄt ()ДЄt (OrderMode orderMode, CentralOrder order)ДЄt ()ДЄt _DoubleClick(Object sender, EventArgs e)ДЄt .OnDoubleClick(EventArgs e)ДЄt C1.(EventArgs e)ДЄt .WmMouseUp(Message& m, MouseButtons button, Int32 clicks)ДЄt .WndProc(Message& m)ДЄt C1.ScrollableControl.WndProc(Message& m)ДЄt .OnMessage(Message& m)ДЄt .WndProc(Message& m)ДЄt .Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam). As it is, I'm really not confident about rolling out my application with unexplained, random exceptions. If I can give any more information that might help solve, please let me know. Maybe this will solve the issue, could it be the forms are trying to construct & having a problem with JIT when running from the network share When I finally deploy, I think I'll be installing on the servers & using NGEN.

It seems I'm not alone with this problem, this thread has most in common with the symptons I'm experiencing.(post by Charles at the bottom) Once a form has this error, it cannot be opened again until the application is shut down and restarted.Only seems to happen on forms been displayed with.Most forms will be retriving data as they construct. The application is using remoting over TCP, this provides all the business objects and various data (DAL).

#External component has thrown an exception windows#

Application runs from a network share, hosted on a windows server.Only seems to happen in thin-client mode.The Citrix machines running the application are on Windows 2000.Perhaps something installed on the server that is conflictingД¬an anyone from MS help with this or point me inВ a direction A bit more information. Forgot to mention, I'm not getting this problem on any 'fat clients', only when running the application through terminal services. I'll check on objects, but I'm not sure if that's going to be the issue. Use a memory profiler and check whether all the objects have been disposed. Im guessing it might be a problem with your objects dispose. Would appreciate any advice on this one.the exception itself is fairly ambiguous! However, this is not running in XP so I don't think it applies EnableVisualStyles is to blame & a call to Application.DoEvents() just after calling EnableVisualStyle is the solution. There have been a few posts that suggest Application. I've seen a few other people reporting this issue (in exactly the same scenario, winforms app running over terminal services), but with no resolution. One post mentions a faulty network connection to blame, but our network is pretty solid & we run a number of other applications from shares. Can anyone think of what would be causing this error - why is it only happening every now & then (the worst sort of errors!). The application is running in a Citrix terminal server environment, the assemblies themselves are running from a network share. I can close the application and restart it, then I can view the form without the error It doesn't seem to happen on any particular form, just pops up now & again. Seems to happen when trying to display a form with a call to. I'm getting this error really sporadically in my Winforms app. Posted: Windows Forms General, External component has thrown an exception Index вЂ№ Windows Forms вЂ№ Windows Forms General External component has thrown an exception