How to set exit code of non-console app?. C# / C Sharp Forums on Bytes. the app as a console application this works but not as a Windows I don't know what you mean by "Windows applications exit immediately, I wrote a simple C# console application that goes into SQL and returns an integer value and message followed by a return-code. The integer value is a percentage ranging from 0 to 100%. 100% is green, if it drops below 80% I have a warning. When I run the exe the code in command line it generates the right values. C# Console Applicaiton User enters data values for example (10, 20, 30) When user enters -1 I'd like to exit applicaiton BEFORE user presses ENTER. I've tried a few things so far but nothings working like I want yet. Should have been real quick and simple application. Thanks! Visual Studio Unable to Copy File Access to the Path is Denied Hot Network Questions If I arrive in the UK, and then head to mainland Europe, does my Schengen visa 90 day limit start when I arrived in the UK, or mainland Europe? For more information about building console applications, including examples in C#, Visual Basic, and C++, see the documentation for the Console class. If the console does not exist, as in a Windows-based application, output written to the standard output stream will not be visible, because there is no console to write the information to. Compilation The C# compiler compiles source code, specified as a set of files with the .cs extension, into an assembly. An assembly is the unit of packaging and deployment in .NET. An assembly can be either an application or a library. A normal console or Windows application has a Main method and is an .exe file. Start() Starts a process. Enumerating Running Processes To illustrate the process of manipulating Process types (pardon the redundancy), assume you have a C# console application named ProcessManipulator, which defines the following static helper method: public static void ListAllRunningProcesses() { /