How do I POST data from an asp.net MVC controller to a non-MVC asp.net page?

Question

One department in our company is using classic asp.net while ours department is using MVC.

We need to pass 5 variables to his page (by form submit). Can someone please show a simple example of posting form data from an MVC controller to an asp.net page expecting the form variable?

Answer 1

If I am reading this correctly, you should be able to do this without any cross domain / application concern. You want to do this in the controller, so you can use the HttpWebRequest class to post the data. It's conceptually the same as posting from a web browser as far as the target application is concerned.

Here's a quick and dirty snippet:

// name / value pairs. field names should match form elements
string data = field2Name + "=" + field1Value + "&" + field2Name+ "=" + field2Value

HttpWebRequest request = (HttpWebRequest) WebRequest.Create(<url to other applications form action>);

// set post headers
request.Method = "POST";
request.KeepAlive = true;
request.ContentLength = data.Length;
request.ContentType = "application/x-www-form-urlencoded";

// write the data to the request stream         
StreamWriter writer = new StreamWriter(request.GetRequestStream());
writer.Write(data);

// iirc this actually triggers the post
HttpWebResponse response = (HttpWebResponse)request.GetResponse();