I am just trying to write a multipart parser but things getting complicated and want to ask if anyone knows of a ready parser in C#!
Just to make clear, I am writin
With Core now you have access to a IFormCollection by using HttpContext.Request.Form.
Example saving an image:
Microsoft.AspNetCore.Http.IFormCollection form;
form = ControllerContext.HttpContext.Request.Form;
using (var fileStream = System.IO.File.Create(strFile))
{
form.Files[0].OpenReadStream().Seek(0, System.IO.SeekOrigin.Begin);
form.Files[0].OpenReadStream().CopyTo(fileStream);
}
I've had some issues with parser that are based on string parsing particularly with large files I found it would run out of memory and fail to parse binary data.
To cope with these issues I've open sourced my own attempt at a C# multipart/form-data parser here
See my answer here for more information.
I had a similar problem that i recently solved thanks to Anthony over at http://antscode.blogspot.com/ for the multipart parser.
Uploading file from Flex to WCF REST Stream issues (how to decode multipart form post in REST WS)
I open-sourced a C# Http form parser here.
This is slightly more flexible than the other one mentioned which is on CodePlex, since you can use it for both Multipart and non-Multipart form-data
, and also it gives you other form parameters formatted in a Dictionary
object.
This can be used as follows:
non-multipart
public void Login(Stream stream)
{
string username = null;
string password = null;
HttpContentParser parser = new HttpContentParser(stream);
if (parser.Success)
{
username = HttpUtility.UrlDecode(parser.Parameters["username"]);
password = HttpUtility.UrlDecode(parser.Parameters["password"]);
}
}
multipart
public void Upload(Stream stream)
{
HttpMultipartParser parser = new HttpMultipartParser(stream, "image");
if (parser.Success)
{
string user = HttpUtility.UrlDecode(parser.Parameters["user"]);
string title = HttpUtility.UrlDecode(parser.Parameters["title"]);
// Save the file somewhere
File.WriteAllBytes(FILE_PATH + title + FILE_EXT, parser.FileContents);
}
}
Check out the new MultipartStreamProvider and its subclasses (i.e. MultipartFormDataStreamProvider). You can create your own implementation too if none of the built in implementations are suitable for you use case.