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Identifying the Two Basic Types of Errors

Essentially, two types of errors can occur in code: compile errors and runtime errors. A compile error (commonly called a build error) is an error in code that prevents C#'s compiler from being able to process the code. C# won't compile a project that has a build error in it. A method call with incorrect parameters, for example, will generate a build error. Runtime errors are errors that don't occur at compile time but are encountered when the project is being run. Runtime errors are usually a result of trying to perform an invalid operation on a variable.

For example, the following code won't generate ...