如何查看一个Application是32位的还是64位的？-优快云博客

使用process explorer查看，找到对应的进程。

注册表的路径是Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\

使用powershell查看

[reflection.assemblyname]::GetAssemblyName("${pwd}\AssemblyTest.exe") | fl 命令中的pwd是指当前路径

https://stackoverflow.com/questions/270531/how-to-determine-if-a-net-assembly-was-built-for-x86-or-x64

使用visual studio自带的CorFlags

C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional>cd "C:\Users\clu\source\repos\Edenred\Test\AssemblyTest\bin\Debug"

C:\Users\clu\source\repos\Edenred\Test\AssemblyTest\bin\Debug>corflags AssemblyTest.exe
Microsoft (R) .NET Framework CorFlags Conversion Tool. Version 4.6.1055.0
Copyright (c) Microsoft Corporation. All rights reserved.

Version : v4.0.30319
CLR Header: 2.5
PE : PE32
CorFlags : 0x20003
ILONLY : 1
32BITREQ : 0
32BITPREF : 1
Signed : 0

https://stackoverflow.com/questions/18608785/how-to-interpret-the-corflags-flags

Microsoft .NET 4.5 introduced a new option, Any CPU 32-bit Preferred. In the new version of CorFlags.exe, the 32BIT flag no longer exists, instead, two new flags were added, 32BITREQ and 32BITPREF.

Somewhere based on the below explanation, we can interpret new CorFlags as follows.

CPU Architecture           PE      32BITREQ   32BITPREF
------------------------   -----   --------   ---------
x86 (32-bit)               PE32           1           0
x64 (64-bit)               PE32+          0           0
Any CPU                    PE32           0           0
Any CPU 32-Bit Preferred   PE32           0           1