To set iPhone's UserAgent to C#'s WebBrowser, you can do the following. With this method, only one kind of UA can be used. I'm an amateur in both C# and .net, so I don't really understand the principle, but with this code, the UA was actually rewritten and the screen for iPhone was displayed.
[cc lang="c#"]
Runtime.InteropServices;
namespace WindowsFormsApplication
{
public partial class SomeApp: Form
{
[DllImport("urlmon.dll", CharSet = CharSet.Ansi)]]
private static extern int UrlMkSetSessionOption(int dwOption, string str, int nLength, int dwReserved);
const int URLMON_OPTION_USERAGENT = 0x10000001;
string ua = "Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en)";
public SomeApp()
{
InitializeComponent();
UrlMkSetSessionOption(UrlMON_OPTION_USERAGENT, ua, ua.Length, 0);
}
[/cc]
reference
Rewrite UserAgent in IE component" windows application
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