The runtime library (RTL for short) is literally the library file that a program needs when it's running. It is usually provided in the form of dynamic-link library (DLL for short), and generally includes various functions that are commonly used in programming. It is a practical way to implement the concept of sharing function libraries in Windows. The extensions of these library function files are mainly *.dll, *.ocx (ActiveX control library), and *.drv (old system driver).

You may encounter the following error when running some software or games written using Visual Studio 20XX: Microsoft Visual C++ Runtime library Runtime Error! This proves that your system is missing the corresponding Microsoft Visual C++ Redistributable Packages as the must-have additional components (common DLL runtimes that are equivalent to the dictionary files of programs) for these programs to run properly. This is especially true for newly installed systems. This case, Visual C++ Runtime Installer can help you solve problems with one click.

Although Essential .NET, Volume I: The Common Language Runtime has only 432 pages (published in 2002), it contains a lot of practical details and expert-level advice only Don Box can provide. This provides the very important reference and guidance for developers who need to make full use of the Microsoft .NET's powerful features.

• This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.