WeBrowser Control Post Issue

[kamimeer]

I am using .net 2.0 and WebBrowser control that comes with it in C#.I
am having some issue trying to do a POST action on a Web URL. I have a
site that has two input fields in it, but when I try to submit a
request using the following code , nothing happens and the site just
show up with the User Name and Password fields being blanks.

public void SetURL(string url)
{
try
{
if (this.webBrowser1.InvokeRequired)
{
SetURLDelegeate urlDelegate = new
SetURLDelegeate(SetURL);
this.Invoke(urlDelegate, new object[] { url });
}
else
{
String postdata = PreparePostData();
if (postdata != string.Empty)
{
System.Text.Encoding a =
System.Text.Encoding.UTF8;
byte[] byte1 = a.GetBytes(postdata);
webBrowser1.Navigate(url, "", byte1,
"Content-Type: application/x-www-form-urlencoded\r\n");
}
else
webBrowser1.Url = new Uri(url);
}
}
catch (Exception exp)
{
}
}
private string PreparePostData()
{
string postData = string.Empty;
string userField = "username";
string pwdField = "password";
postData += userField.Trim() + "=";
postData += "test" + "&";
postData += pwdField.Trim() + "=";
postData += "test";
return postData;

}
I don't even see an error that login fails or any thing like that. My
guess is that WebBrowser is always sending a GET request rather than a
POST and for some reason the web server does not accept GET actions. I
appreciate your help.

Mir Kamran