/// <summary>
/// Adds a file to a collection of System.Net.Http.HttpContent objects that get serialized to multipart/form-data MIME type.
/// </summary>
/// <param name="content">The HTTP content of multipart form data.</param>
/// <param name="name">The name for the HTTP content to add.</param>
/// <param name="file">The file info instance.</param>
/// <param name="fileName">The file name for the HTTP content to add to the collection.</param>
/// <param name="mediaType">The MIME of the file.</param>
/// <return>The HTTP content to add.</return>
public static StreamContent Add(this MultipartFormDataContent content, string name, FileInfo file, string fileName = null, string mediaType = null)
{
if (content == null || file == null)
{
return(null);
}
var c = new StreamContent(file.OpenRead());
if (!string.IsNullOrWhiteSpace(mediaType))
{
c.Headers.ContentType = new MediaTypeHeaderValue(mediaType);
}
else if (mediaType == null)
{
var mime = WebFormat.GetMime(file);
if (!string.IsNullOrWhiteSpace(mime))
{
c.Headers.ContentType = new MediaTypeHeaderValue(mime);
}
}
content.Add(c, name, fileName ?? file.Name);
return(c);
}
