Question

怎么让一个用C#写的程序，开机时自动运行

Answer 1

将你编译好的exe文件放到startup中，一下是startup文件位置
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup
//------------------------------------------------------------------------------------------------
【注册表】
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer\User Shell Folders]
　　\ "Common Startup\ "=\ "%Directory%\ "
　　[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer\Shell Folders]
　　\ "Common Startup\ "=\ "%Directory%\ "
//------------------------------------------------------------------------------------------------

C:\Users\用户名\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup
//------------------------------------------------------------------------------------------------
【注册表】
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
　　Startup=\ "%Directory%\ "
　　[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders]
　　Startup=\ "%Directory%\ "
//------------------------------------------------------------------------------------------------

Answer 2

C#/WPF程序实现软件开机自动启动的两种常用方法 - CSDN博客 https://blog.csdn.net/liyu3519/article/details/81257839