net library: #r ''Įxample needed? Here we go! Let’s assume I have a class library ‘ Helpers‘ with a class ‘ Cast‘ and a method ‘ StringToInt()’. That’s even easier when we want to use a. Not a problem, we just use #r directive! For example, for our custom assembly, we just type the following code in the C# Interactive tab : #r 'path/MyVeryImportandLib.dll' Ok, but what if I want to run the code that requires some assembly? FileInfo file = new we check the c: drive. Ooook, why don’t we create a text file? Let’s write the following C# code: using Īnd let’s test the lines that create the file so we select the below lines and press Ctrl + E, E. What is going on here? Well, the Roslyn(known as a ‘ Compiler as A Service’) takes your C# code and runs it! Amazing, isn’t it? Show me something usefull!

We will see the ‘ C# interactive’ pane activate in the bottom of the Visual Studio window. Press Ctrl + E, E and wait for the magic to happen! Depending on the Visual Studio version, we need to type only class names or the class names with namespaces.Ģ. This has to be a fully compilable fragment so make sure that if you copy the code to the separate project, it would compile. Select the fragment of code we want to run. Ok, so if we want to run just the fragment of our code – this is what we do:ġ.

I can’t be the only person who hates waiting for the code to compile and run… Especially when I want to test only a small part of it! That’s a total waste of time! But good news everyone, I found a way to run a part of my C# code without building the whole project! Ctrl + E, E – the magical shortcut!

Most helpful visual studio hotkeys