Invocation of REST API in c# that is expecting File object

Question

Our application has a WEB GUI that has an interface to accept the local file location and name. We have written a C# controller that is invoked while clicking submit button. The controller receives the file as HttpPostedFileBase. From the controller, we are trying to invoke the REST API in C# that is expecting the File object as a request however we are unable to do so. The request is expecting the file and the request parameter is of form-data type. Any help to write a C# REST API client to invoke this REST service by passing the file.

below is my model code : PoSPRegistration model

in the above code image is received in HttpPostedFileBase object.

below is controller code : controller post method

can't add image object in request.addfile method because it includes name and filepath

Answer 1

The RestRequest class in RestSharp has an overload of the AddFile method that takes a callback that is called to write data to a Stream object:

AddFile(string name, 
        Action<Stream> writer, 
        string fileName, 
        long contentLength, 
        string contentType = null)

You can use it like that to post data from a HttpPostedFileBase:

request.AddFile("pan", 
                stream => objmodel.doc_pan.InputStream.CopyTo(stream), 
                objmodel.doc_pan.FileName, 
                objmodel.doc_pan.ContentLength, 
                objmodel.doc_pan.ContentType);