Direktlink Bildersuche als Kontextmenü im Windows Explorer

param(
    [string]$file
)
#Hide Console
## $window = Add-Type -memberDefinition @"[DllImport("user32.dll")] public static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);"@ -name "Win32ShowWindowAsync" -namespace Win32Functions passThru  
## $window::ShowWindow((Get-Process –id $pid).MainWindowHandle, 0)

[reflection.assembly]::loadwithpartialname("System.Windows.Forms") | Out-Null  
[reflection.assembly]::loadwithpartialname("System.Drawing") | Out-Null  

function Get-GoogleImageSearchResult([string][ValidateScript({Test-Path $_})]$path){
    $boundary = [datetime]::now.Ticks.ToString()
    $p1 = @"  
--$boundary
Content-Disposition: form-data; name="encoded_image"; filename="$([IO.Path]::GetFileName($path))"  
Content-Type: image/$([System.IO.Path]::GetExtension($path).substring(1))


"@  
    $p2 = @"  
--$boundary
Content-Disposition: form-data; name="image_content"  


--$boundary--

"@  
    $bytes = [System.Text.Encoding]::ASCII.GetBytes($p1) + ([IO.File]::ReadAllBytes($path)) + [System.Text.Encoding]::ASCII.GetBytes($p2)
    $request = [Net.HttpWebRequest] ([Net.HttpWebRequest]::Create('https://images.google.com/searchbyimage/upload'))  
    $request.Method = "POST"  
    
    $proxyenabled = Get-ItemProperty -Path "Registry::HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings"  
    #if proxy
    if($proxyenabled.ProxyEnable -eq 1) { 
        # Standardanmeldedaten ...
        ## $proxy = [System.Net.WebProxy]::GetDefaultProxy()
        ## $proxy.UseDefaultCredentials = $true
        # ...oder nach Anmeldedaten fragen
        ## $proxy.Credentials = (Get-Credential).GetNetworkCredential()
        # ...oder Anmeldedaten übergeben
        ## $creds = New-object System.Net.NetworkCredential($Username,$Password)
        $proxy = New-Object System.Net.WebProxy("http://xxx.xxx.xxx.xxx:80")  
        $creds = New-object System.Net.NetworkCredential("xxxxx","xxxxxxxx")  
        $proxy.Credentials = $creds
        $request.Proxy = $proxy
        }
    #endif proxy
    
    $request.ContentType = "multipart/form-data; boundary=$boundary"  
    $request.ContentLength = $bytes.Length
    $request.AllowAutoredirect = $false
    $stream = $request.GetRequestStream()
    $stream.Write($bytes, 0, $bytes.Length)
    $stream.Close()
    return [regex]::match((New-Object Io.StreamReader $request.GetResponse().GetResponseStream()).ReadToEnd(),'(?is)HREF="([^"]+)"').Groups[1].Value  
}

function ShowForm(){
    $form1 = New-Object System.Windows.Forms.Form
    $lblStatus = New-Object System.Windows.Forms.Label
    $form1.ClientSize = [System.Drawing.Size]::new(292,62)
    $form1.ControlBox = $False
    $form1.StartPosition = 1
    $form1.FormBorderStyle = 5
    $form1.Name = "form1"  
    $form1.Text = "Uploading ..."  
    $form1.add_Shown({
        $form1.Update()
        $url = Get-GoogleImageSearchResult $file
        if ($url){
            start $url
        }
        $form1.Close()
    })

    $lblStatus.Dock = 5
    $lblStatus.Font = New-Object System.Drawing.Font("Arial",13,1,3,0)  
    $lblStatus.Location = [System.Drawing.Point]::new(0,0)
    $lblStatus.Name = "lblStatus"  
    $lblStatus.Size = [System.Drawing.Size]::new(292,62)
    $lblStatus.Visible = $true
    $lblStatus.Text = "Datei-Upload, bitte warten."  
    $lblStatus.TextAlign = [System.Drawing.ContentAlignment]::MiddleCenter
    $form1.Controls.Add($lblStatus)
    $form1.ShowDialog() | out-null
}
ShowForm