converter código em C#

[Marina Novello Bortolucci 0]

Será que alguém pode me ajudar, tenho o código abaixo, gostaria de converte-lo em c#

 HttpClient client = HttpClientBuilder.create().build();

    HttpPost post = new HttpPost(URL);
    FileBody fileBody = new FileBody(path.toFile(), ContentType.DEFAULT_BINARY);
    StringBody stringBody1 = new StringBody("15425039000128", ContentType.MULTIPART_FORM_DATA);
    StringBody stringBody2 = new StringBody("154250", ContentType.MULTIPART_FORM_DATA);
    StringBody stringBody3 = new StringBody("7513", ContentType.MULTIPART_FORM_DATA);
    // 
    MultipartEntityBuilder builder = MultipartEntityBuilder.create();
    builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);

    builder.addPart("login", stringBody1);
    builder.addPart("senha", stringBody2);
    builder.addPart("cidade", stringBody3);
    builder.addPart("f1", fileBody);
    HttpEntity entity = builder.build();

    //
    post.setEntity(entity);
    HttpResponse response = client.execute(post);