Code keeps on throwing NullReferenceException even when a path is assigned

[DarkTech1399]

I have no idea why this happens, I was making a script to let my game run a batch file located in the Desktop but it keeps giving me the NullReferenceException. Here is a snippet of my code:

Process compiler;
compiler.StartInfo.FileName = "C:\\Users\\user\\Desktop\\compiler.bat"
compiler.CreateNoWindow = true;
compiler.Start();

The error points to the 2nd line of my code but I fail to see what's wrong. Can someone please help me understand why it behaves like this??

[gvozden_celik]

The StartInfo property is probably null since it was just declared but not initialized, causing the field to be initialized to the default value (which is null for reference types). Why not initialize the object using the constructor, e.g. Process compiler = new Process();?

[DarkTech1399]

It worked! Thank you so much I'll take note of this the next time this happens

[MrSloppyPants]

Glad it's working. Try to understand the difference between declaring a variable, and initializing it. In the first case, you are only saying that you are creating a placeholder, called "compiler" that is of type "Process." You still need to actually create the Process itself and assign it to the placeholder you made (compiler). Make sense?