Diffrence between debug & release versions


I am new to C#.
I wrote a C# application, compiled it as Debug version (I have a dll inside inside bin folder) and gave it to my customer.
Should I compile it as Release version?
What is a diffrence between Debug & Release version? When should I use each of these compilations?


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AndyAinscowFreelance programmer / ConsultantCommented:
You should always distribute the release versions.
Typically a debug build contains extra information/code to assist in debugging - usually means bigger and slower.

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When you compile a program in Debug mode, usually no optimizations are made, and, what is more important, symbolic names of functions and variables are exported too, so you can debug your program easily. On the other hand, Release mode compilation makes some speed optimizations and no debug symbols are included, so the resulting binary is smaller and faster. So always remember to switch to Release mode before compiling your program for distribution :)
margaritAuthor Commented:
Thanks for the useful comments. One more question:
When I give the debug version to customer I give him EXE + dll.
Does executable from release version contains dll inside of it, or I should use EXE+dll too?
AndyAinscowFreelance programmer / ConsultantCommented:
You still need both.
You build a release version of the exe AND a release version of the dll
margaritAuthor Commented:
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