What is the purpose of ILdasm.exe (Intermediate Language Disassembler)?
The ILdasm.exe (Intermediate Language Disassembler) parses any .NET Framework .exe or .dll assembly, and shows the information in human-readable format. ILdasm.exe shows more than just the Microsoft intermediate language (MSIL) code it also displays namespaces and types, including their interfaces. You can use Ildasm.exe to examine native .NET Framework assemblies, such as Mscorlib.dll, as well as .NET Framework assemblies provided by others or created yourself.
For example to show the detail of your HelloWorld Application use the command