How to work with webrowser in Smart device using C#

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C#

Hi friends
I developed gps application in smart device using C#, in that i am getting the GPS data i converted GPS data into latitude and longitude in different text box for this no problem.

when i trying to locate position in the map using this latitude and longitude for this i used web browser it give errors it not locating the present position in the map.

please send the solution i am sending errors also:

Error   1   The best overloaded method match for 'System.Windows.Forms.WebBrowser.Navigate(System.Uri)' 
has some invalid arguments  C:\Documents and Settings\User\Desktop\project\Tracking\Tracking\Form1.cs   322 17  
Tracking 

Error   2   Argument '1': cannot convert from 'string' to 'System.Uri' 
C:\Documents and Settings\User\Desktop\project\Tracking\Tracking\Form1.cs   
322 38  Tracking

My code is:

private void getmap_Click(object sender, EventArgs e)
{
    webBrowser1.Show();
    if (currentLatitudeTbx.Text == string.Empty || currentLongitudeTbx.Text == string.Empty)
    {
        MessageBox.Show("Supply a latitude and longitude value", "Missing Data");
        return;
    }
    try
    {
        string lat = string.Empty;
        string lon = string.Empty;

        StringBuilder queryAddress = new StringBuilder();
        queryAddress.Append("http://maps.google.com/maps?q=");
        if (currentLatitudeTbx.Text != string.Empty)
        {
            lat = currentLatitudeTbx.Text;
            queryAddress.Append(lat + "%2C");
        }
        if (currentLongitudeTbx.Text != string.Empty)
        {
            lon = currentLongitudeTbx.Text;
            queryAddress.Append(lon);
        }
        webBrowser1.Navigate(queryAddress.ToString());

    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message.ToString(), "Error");
    }
 }

[Corrected code formatting]