PowerShell - dbghelp reflexion to write a MiniDump

function Write-MiniDumpDBGHelp ($process, $dumpFilePath){

    $MethodDefinition = @'

[DllImport("DbgHelp.dll", CharSet = CharSet.Unicode)]

public static extern bool MiniDumpWriteDump(

    IntPtr hProcess,

    uint processId,

    IntPtr hFile,

    uint dumpType,

    IntPtr expParam,

    IntPtr userStreamParam,

    IntPtr callbackParam

    );

'@

    $dbghelp = Add-Type -MemberDefinition $MethodDefinition -Name 'dbghelp' -Namespace 'Win32' -PassThru

    $miniDumpWithFullMemory = [UInt32] 2

    $processId = $process.Id

    $processName = $process.Name

    $processHandle = $process.Handle

    $processFileName = "$($processName).dmp"

    $processDumpPath = "$dumpFilePath\$processFileName"

    $fileStream = New-Object IO.FileStream($processDumpPath, [IO.FileMode]::Create)

    try{

        $result = $dbghelp::MiniDumpWriteDump($processHandle,$processId,$fileStream.SafeFileHandle.DangerousGetHandle(),$miniDumpWithFullMemory,[IntPtr]::Zero,[IntPtr]::Zero,[IntPtr]::Zero)

        if(!$result) {

            Write-Host "Error : cannot dump the process" -ForegroundColor Red

            $fileStream.Close()

            Stop-Script

        }

    }

    catch{

        $_.Exception.Message

        Write-Host "Error : cannot dump the process" -ForegroundColor Red

        $fileStream.Close()

        Stop-Script

    }

    $fileStream.Close()

}