Begininvoke Error
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Sql Server Setup Has Encountered The Following Error Exception Has Been Thrown
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Sql Server Setup Has Encountered An Error When Running A Windows Installer File
Overflow the company Business Learn more about hiring developers or posting ads with us sql server setup has encountered the following error file format is not valid Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a allocations crossword clue community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up BeginInvoke throws exception up vote 8 down vote favorite 3 I have the following problem. https://support.microsoft.com/en-us/kb/975055 FindRoot is actually in a third party dll and I do not have control over it. It has to be called via Begin invoke. Sometimes, the FindRoot method throws exception. This causes my whole application to crash. Now how do I prevent my application from crashing even if FindRoot throws exception. delegate void AddRoot(double number); public static void FindRoot(double number) { throw new Exception();/// sometimes is thrown. } static void back_DoWork(object http://stackoverflow.com/questions/2287512/begininvoke-throws-exception sender, DoWorkEventArgs e) { AddRoot root = FindRoot; root.BeginInvoke(12.0, root.EndInvoke, root); } c# delegates share|improve this question edited Feb 18 '10 at 9:32 Pontus Gagge 14.3k12643 asked Feb 18 '10 at 9:30 Prashant 1,17722549 add a comment| 2 Answers 2 active oldest votes up vote 8 down vote accepted Use a callback instead of directly calling EndInvoke: using System.Runtime.Remoting.Messaging; ... static void back_DoWork() { AddRoot root = FindRoot; root.BeginInvoke(12.0, new AsyncCallback(callback), root); } static void callback(IAsyncResult result) { AddRoot dlg = (AddRoot)(((AsyncResult)result).AsyncDelegate); try { dlg.EndInvoke(result); } catch (Exception ex) { Console.WriteLine(ex.Message); } } Btw: it looks to me like you are already calling this code from a background thread. Starting yet another thread to run FindRoot() looks strange. share|improve this answer edited May 22 '13 at 11:52 Mo Patel 1,97441325 answered Feb 18 '10 at 11:22 Hans Passant 652k809511598 add a comment| up vote 3 down vote Actually the exception is caught and re-thrown when you call EndInvoke, so to catch it you need to use try around your call to EndInvoke. You may find this article useful http://msdn.microsoft.com/en-us/magazine/cc163467.aspx share|improve this answer edited Feb 18 '10 at 9:43 answered Feb 18 '10 at 9:36 Brian Rasmussen 85k25161261 add a comment| Your Answer draft saved draft discarded Sign up
here for a quick overview of the site Help Center Detailed answers http://stackoverflow.com/questions/808867/invoke-or-begininvoke-cannot-be-called-on-a-control-until-the-window-handle-has to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the sql server Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Invoke or BeginInvoke cannot be called on a control until the window handle has been created up vote 50 down vote favorite 15 sql server setup I have a SafeInvoke Control extension method similar to the one Greg D discusses here (minus the IsHandleCreated check). I am calling it from a System.Windows.Forms.Form as follows: public void Show(string text) { label.SafeInvoke(()=>label.Text = text); this.Show(); this.Refresh(); } Sometimes (this call can come from a variety of threads) this results in the following error: System.InvalidOperationException occurred Message= "Invoke or BeginInvoke cannot be called on a control until the window handle has been created." Source= "System.Windows.Forms" StackTrace: at System.Windows.Forms.Control.MarshaledInvoke(Control caller, Delegate method, Object[] args, Boolean synchronous) at System.Windows.Forms.Control.Invoke(Delegate method, Object[] args) at System.Windows.Forms.Control.Invoke(Delegate method) at DriverInterface2.UI.WinForms.Dialogs.FormExtensions.SafeInvoke[T](T control, Action`1 action) in C:\code\DriverInterface2\DriverInterface2.UI.WinForms\Dialogs\FormExtensions.cs:line 16 What is going on and how do I fix it? I know as much as it is not a problem of form creation, since sometimes it will work once and fail the next time so what could the problem be? PS. I really really a