C# 0 The Complete Reference

Example.exe

 (or any 

other

exe

file that contains MSIL) on a computer for which the .NET Framework is not 

installed, the program will not execute because the CLR will be missing.

N

OTE

N

OTE

Prior to running 

csc.exe

 you will need to open a Command Prompt window that is 

configured for Visual Studio. The easiest way to do this is to select Visual Studio 2008 

Command Prompt under Visual Studio Tools in the Start menu. Alternatively, you can start 

an unconfigured Command Prompt window and then run the batch file 

vsvars32.bat

, which 

is provided by Visual Studio. You may, however, encounter a problem with the command-line 

approach. At the time of this writing, Visual C# 2008 Express Edition does not provide the 

Visual Studio Tools menu or the 

vsvars32.bat

 file. Therefore, if you are using Visual C# 2008 

Express, you may not be able to configure a command prompt window automatically. In this 

case, use the Visual Studio IDE instead. However, Visual C++ 2008 Express Edition does supply 

both

vsvars32.bat

 and the Visual Studio 2008 Command Prompt menu selection. Therefore, if 

you also install Visual C++ 2008 Express Edition, you will be able to start a properly configured 

command prompt window that will also work for C#.