c# - Unable to save BMP image to localhost in Winform -

my code working perfect if use jpg image not working bmp image. shows file not writable. here c# code:

string filename = @"e:\projectpics\new.bmp"; if (filename != "") {      string path = "http://localhost/images/upload.php";      webclient client = new webclient();      byte[] responsebinary = client.uploadfile(path, filename);      string response = encoding.utf8.getstring(responsebinary); } 

here php code:

<?php //check whether folder exists if(!(file_exists('upload'))) {   //create folder   mkdir('upload');   //give permission folder   chmod('upload/', 0777); }  $uploads_dir = './upload'; //directory save file comes client application. if ($_files["file"]["error"] == upload_err_ok) {     $tmp_name = $_files["file"]["tmp_name"];     $name = $_files["file"]["name"];     move_uploaded_file($tmp_name, "$uploads_dir/$name");     } else       {        die("upload failed error " . $_files['file']['error']);     } ?>