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Today Xiaobian to share with you what are the relevant knowledge points of the preprocessor instructions available in C#, detailed content, clear logic, I believe most people still know too much about this knowledge, so share this article for everyone's reference, I hope you have something to gain after reading this article, let's learn about it together.

C#Preprocessor Instruction List

The following table lists the preprocessor directives available in C#:

Preprocessor instruction description #define It defines a series of characters that become symbols.# undef It is used to undefine symbols.# if It is used to test whether a symbol is true.# else It is used to create compound conditional directives and is used with #if.# elif It is used to create compound conditional directives.# endif Specifies the end of a conditional instruction.# line It allows you to modify the number of lines in the compiler and, optionally, the filename of the output errors and warnings.# error It allows an error to be generated from a specified location in the code.# warning It allows a level one warning to be generated from a specified location in the code.# region This allows you to specify a block of code that can be expanded or collapsed when using the outline feature of Visual Studio Code Editor.# endregion It identifies the end of the #region block. That's all there is to this article,"What are the preprocessor instructions available in C#?" Thank you for reading! I believe everyone has a great harvest after reading this article. Xiaobian will update different knowledge for everyone every day. If you want to learn more knowledge, please pay attention to the industry information channel.

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