How to store file with name in single folder?

private string getimage(string url)
{
string remoteImgPath = url;
Uri remoteImgPathUri = new Uri(remoteImgPath);
string remoteImgPathWithoutQuery = remoteImgPathUri.GetLeftPart(UriPartial.Path);

string file = Path.GetFileName(remoteImgPathWithoutQuery);
string fileName = file.Save(file, "profile_img_" + Userid);
 
string localPath = AppDomain.CurrentDomain.BaseDirectory + "content\\uploads\\profile\\" + fileName+".jpg";
WebClient webClient = new WebClient();
webClient.DownloadFile(remoteImgPath, localPath);
return localPath;
}