Question

i have a simple app in c#. i would like the DLL to be “inside” the exe file. how do i do this?

Answer 1

ILMerge does exactly what you are looking for

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the page is a little misleading, ILMerge works on V3 and V4 assemblies per its actual webpage

ILMerge should work just fine with
newer versions of .NET. Just use the
option: /targetplatform:v4,. For
version 3.5, you probably don’t need
to set the target platform, but you
may need to add the v3.5 framework
directory as a /lib option so that
assemblies from there can be found.
(Unless they’re in the GAC in which
case they’ll be found anyway.) To run
ILMerge in the v4.0 runtime, use this
config file.

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To answer how do you use it from your question in the other answer

Usage: ilmerge [/lib:directory]*
[/log[:filename]] [/keyfile:filename
[/delaysign]]
[/internalize[:filename]] [/t[arget]
:(library|exe|winexe)] [/closed]
[/ndebug] [/ver:version] [/copyattrs
[/allowMultiple]] [/xmldocs]
[/attr:filename] [/ta
rgetplatform:[,]
| /v1 | /v1.1 | /v2 | /v4]
[/useFullPublicKeyForReferences]
[/wildcards] [/zeroPe Kind]
[/allowDup:type]* [/union] [/align:n]
/out:filename
[…]

So ilmerge /out:Combined.exe mainFile.exe otherDll.dll for your case as most of the defaults should be fine