C#

Add Data to multipart/form-data Request

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Demonstrates how to add content (such as a JPG, PDF, XML, etc.) to multipart/form-data requests. C#

bool success = false;

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

Chilkat.HttpRequest req = new Chilkat.HttpRequest();
req.HttpVerb = "POST";
req.ContentType = "multipart/form-data";
req.Path = "/xyz/something";

req.AddParam("param1","value1");
req.AddParam("param2","value2");

//  Add some small files to the request. (Small so we can see what the full request looks like without too much data..)
Chilkat.BinData bd = new Chilkat.BinData();
success = bd.LoadFile("qa_data/jpg/starfish20.jpg");
req.AddBdForUpload("starfish20","starfish20.jpg",bd,"image/jpeg");

success = bd.LoadFile("qa_data/pdf/helloWorld.pdf");
req.AddBdForUpload("helloWorld","helloWorld.pdf",bd,"application/pdf");

success = bd.LoadFile("qa_data/xml/tinyA.xml");
req.AddBdForUpload("tinyA","tinyA.xml",bd,"text/xml");

//  This HTTP request contains binary data, so we cannot call GenerateRequestText
//  to examine it as a string.  We can instead call GenerateRequestFile
//  to write the request to a file and then examine using a hex editor,
//  or an editor that is capable of handling null bytes and non-printable chars (perhaps by displaying "?" chars instead).
req.GenerateRequestFile("qa_output/multipartFormDataRequest.bin");

Debug.WriteLine("OK.");

//  This is the HTTP multipart/form-data request built by the above code:

//  POST /xyz/something HTTP/1.1
//  Host: domain
//  Content-Type: multipart/form-data; boundary=------------090708030009010000030901
//  Content-Length: 2220
//  
//  --------------090708030009010000030901
//  Content-Disposition: form-data; name="param1"
//  
//  value1
//  --------------090708030009010000030901
//  Content-Disposition: form-data; name="param2"
//  
//  value2
//  --------------090708030009010000030901
//  Content-Disposition: form-data; name="starfish20"; filename="starfish20.jpg"
//  Content-Type: image/jpeg
//  
//  JPEG DATA HERE...
//  --------------090708030009010000030901
//  Content-Disposition: form-data; name="helloWorld"; filename="helloWorld.pdf"
//  Content-Type: application/pdf
//  
//  PDF DATA HERE...
//  --------------090708030009010000030901
//  Content-Disposition: form-data; name="tinyA"; filename="tinyA.xml"
//  Content-Type: text/xml
//  
//  XML DATA HERE...
//  --------------090708030009010000030901--
//