send html template from windows form

Question

Guys,

 I'm trying to change a place holder in an external HTML template then email as a body.

I can get this working fine but I'm struggling to get it to read an external html file from url with streamreader.

 

I'm assuming I would need to use WebRequest instead of streamreader to get the remote html file? 

 

below is my code:

 

           using (StreamReader reader = new StreamReader(http://mytemplate))

            {

                body = reader.ReadToEnd();

            }

            body = body.Replace("{CompanyName}", companynameTextBox.Text);