31-Using-NET-in-Powershell-Part-5.md

31. Using .NET in Powershell Part 5

Add-Type

• Use Add-Type with -MemberDefinition

• Making Windows API calls

  • Get Signature (pinvoke.net recommended)
  • Make the method declarations public
  • Use the modified signature in Add-Type -MemberDefinition

• Creating a Symbolic Link using PowerShell

• CreateSymbolicLink

• New-SymLink.ps1

$ApiCode = @"

[DllImport("kernel32.dll")]
public static extern bool CreateSymbolicLink(string lpSymlinkFileName, string lpTargetFileName, int dwFlags);

"@

$SymLink = Add-Type -MemberDefinition $ApiCode -Name Symlink  -Namespace CreatSymLink -PassThru
$SymLink::CreateSymbolicLink('C:\test\link', 'C:\Users\', 1)

PS C:\Users\Administrator\Desktop> .\New-SymLink.ps1
True
PS C:\Users\Administrator\Desktop>