C# Exit Function On Error

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Break Function In C#

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Exit From Program In C#

only takes a minute: Sign up How to Exit a Method without Exiting the Program? up vote 29 down vote favorite 3 I am still pretty new to C# and am having a difficult time getting used to it compared exit function in c# windows application to C/CPP. How do you exit a function on C# without exiting the program like this function would? if (textBox1.Text == "" || textBox1.Text == String.Empty || textBox1.TextLength == 0) textBox3.Text += "[-] Listbox is Empty!!!!\r\n"; System.Environment.Exit(0); This will not allow return types and if left alone it will keep going on through the function unstopped. Which is undesirable. c# methods return exit share|improve this question edited Jul 22 '10 at 23:30 John Saunders 138k20175320 asked Jul 22 '10 at 23:24 exit function in c# console application Nightforce2 48351021 1 BTW, they're called "methods", not "functions" these days. –John Saunders Jul 22 '10 at 23:31 3 Huh??? C/C++ does have return; for void functions... –Igor Zevaka Jul 22 '10 at 23:38 1 @John I've been programming in C# and other OOP languages for a good time now and I still call them functions. (and I'm only 19!) –Earlz Jul 22 '10 at 23:40 3 @John, a method, to me, implies operating on an instance. A function operates on its arguments, regardless of whether or not it is static. A method is a sub-case of functions that operate on an instance, where there the instance is the first argument (implied or explicit, depending on your language). –Nathan Ernst Jul 22 '10 at 23:59 1 @Nathan: I prefer "instance method" and "static method" or "class method". Functions are a non-OO concept, and don't refer to the concept of a class. –John Saunders Jul 23 '10 at 0:43 | show 3 more comments 6 Answers 6 active oldest votes up vote 76 down vote accepted There are two ways to exit a method early (without quitting the program): Use the return keyword. Throw an exception. Exceptions should only be used for exceptional circumstances - when the method cannot continue and it cannot return a reasonable value that would make sense to the caller. Usually though you should just return when you are done.

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C# Exit If Statement

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Return In C#

the 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 Exit from a function in http://stackoverflow.com/questions/3314305/how-to-exit-a-method-without-exiting-the-program C# up vote 6 down vote favorite A basic question. I need to exit a function without throwing any exceptions. How do I do that in C#? c# exit share|improve this question edited Jan 17 at 18:16 Florian Greinacher 9,05112044 asked May 2 '11 at 10:21 Priyanka 129336 What about using Break; ? I do think you could have easily found this on http://stackoverflow.com/questions/5855991/exit-from-a-function-in-c-sharp google within seconds. Aside that this is probably a duplicate 2. –Mythje May 2 '11 at 10:22 1 or....., return –jjchiw May 2 '11 at 10:23 How do I use it? is it not just break; –Priyanka May 2 '11 at 10:23 2 no break will not exit from function. you can write break in loops. use return to exit. +1 Kamyar –AEMLoviji May 2 '11 at 10:24 add a comment| 6 Answers 6 active oldest votes up vote 19 down vote It's just as simple as: void Function() { ... if(needToLeave) return; ... } Nevertheless this would be a one minute search in any programming tutorial. share|improve this answer answered May 2 '11 at 10:23 Florian Greinacher 9,05112044 1 I don't find the question to be that inane, really. I honestly can't remember when I learned of being able to just return from void, but it certainly wasn't from a tutorial. –rtpg May 2 '11 at 10:25 Thank you. I agree this is real basics –Priyanka May 2 '11 at 10:26 Well I was just ruling out return since my function did not return any

ASP.NET Community Standup Forums Help Home/ASP.NET Forums/General ASP.NET/Getting Started/Exit Sub / Exit Function C# Exit Sub / Exit Function C# RSS 10 replies Last post Nov 29, http://forums.asp.net/t/972038.aspx?Exit+Sub+Exit+Function+C+ 2010 05:45 AM by harshtyagi ‹ Previous Thread|Next Thread › Print Share Twitter Facebook Email Shortcuts Active Threads Unanswered Threads Unresolved Threads Support Options Advanced Search Reply codefrog None 0 Points 113 Posts Exit Sub / Exit Function C# Mar 14, 2006 02:45 PM|codefrog|LINK I have two questions that I'll fold into one. The main question is validation. I have a in c# form that requires several parameters to be typed in by the user. How do I accomplish something like this? (This is borrowing something I loved back in the VB 6 days.) NOTE: This is C# but I'm using something from VB to try and do. ------------------------------------------------------------------------- How do I accomplish something like: if (txtFirstName.Text.Length < 1) { Raise a message box function in c# telling them first name cannot be blank then... Exit Sub } The last time I looked into this years ago you had to use JavaScript. With VS 2005 is there now a better way to do this? Rex Winn Code-frog System Architects, Inc. VS 2005 Professional, C#, C++ Reply jcasp Member 160 Points 2280 Posts Re: Exit Sub / Exit Function C# Mar 14, 2006 04:48 PM|jcasp|LINK If you want to invoke a messagebox from your code-behind, then you'll still have to resort to using JavaScript. However, if you're concerned about the specific example you cited, then you can always use the RequiredFieldValidator control which has an option to alert the user with a messagebox. Reply NC01 All-Star 40650 Points 15353 Posts Re: Exit Sub / Exit Function C# Mar 14, 2006 07:58 PM|NC01|LINK JCasp is right, you'd have to use JavaScript to invoke a message, since the user is client-side. Just do a return statement in C# to mimic VB's exit sub/exit loop etc. if (txtFirstName.Text.Length < 1) { string javaScript = "