pinvoke.net: Edit: advapi32.Encryptfile

@msdn=https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-encryptfilea
@pinvoke=http://pinvoke.net/$$$.htm

Summary: EncryptFile turns on file level system encryption for a specific file or folder

!!!!C# Signature:
 [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError=true)]
 [return: MarshalAs(UnmanagedType.Bool)]
 static extern bool EncryptFile(string filename);
!!!!VB Signature:
 Declare Function EncryptFile Lib "advapi32.dll" (TODO) As TODO
!!!!User-Defined Types:
None.

!!!!Notes:
This requires that Windows supports Encrypted File System (EFS) which is only
supported under NTFS.

!!!!Tips & Tricks:
Please add some!

!!!!C# Sample Code:
 [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError=true)]
 [return: MarshalAs(UnmanagedType.Bool)]
 static extern bool EncryptFile(string filename);
 
 string FileName = "C:\PATH\TO\YOUR\FILE";
 if(EncryptFile(FileName)){
   //File encrypted
 } else{
   throw new Exception("Encryption failed.");
 }

!!!!Alternative Managed API:
Do you know one?  Please contribute it!

Documentation: Encryptfile@msdn on MSDN