C# Windows Forms Application displaying Google Maps v3

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How can Google Maps be used in a simple C# Windows Forms Application utilising a WebBrowser control?

As I understand Google Maps API v3 no longer requires a key = I won't need an external dedicated web site & key from Google.

The example given here (http://www.codeproject.com/KB/cs/GpsMapping.aspx ) gets pretty close but is displaying the full fat google maps web site instead of a map only version (eg: http://code.google.com/apis/maps/documentation/javascript/examples/map-coordinates.html ).

Am I missing an important point regarding simple API v3 integration in C# Forms applications? :confused:

Posted 23-Oct-10 1:06am

simon_parkas

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Member 10623605 12-Mar-14 6:45am

how to integrate google news with windows application?

3 solutions

Solution 3

Below is code, I am using in a project

VB

#Region "GoogleMap"
    Dim GoogleMapLocation As String = ""
    Private Sub LoadGoogleMap(ByVal Location As String)
        If GoogleMapLocation = Location Then Exit Sub
        GoogleMapLocation = Location
        Dim a As String = "" & vbCrLf & _
    " <html>  " & vbCrLf & _
    " <head> " & vbCrLf & _
    " <meta name=""viewport"" content=""initial-scale=1.0, user-scalable=no"" /> " & vbCrLf & _
    "  " & vbCrLf & _
    " <script type=""text/javascript"" src=""http://maps.google.com.mx/maps/api/js?sensor=true&language=en""></script> " & vbCrLf & _
    " <script type=""text/javascript""> " & vbCrLf & _
    "  " & vbCrLf & _
    " var geocoder; " & vbCrLf & _
    " var map; " & vbCrLf & _
    "  " & vbCrLf & _
    "  " & vbCrLf & _
    " function initialize(address) { " & vbCrLf & _
    "  " & vbCrLf & _
        " geocoder = new google.maps.Geocoder();  " & vbCrLf & _
    "  " & vbCrLf & _
        "         var myOptions = {zoom: 16, mapTypeId: google.maps.MapTypeId.ROADMAP}  " & vbCrLf & _
    "  " & vbCrLf & _
        " geocoder.geocode({ 'address': (address ? address : """ & Location & """)}, function (results, status) { " & vbCrLf & _
            " if (status == google.maps.GeocoderStatus.OK) { " & vbCrLf & _
                " map.setCenter(results[0].geometry.location); " & vbCrLf & _
                " var marker = new google.maps.Marker({ " & vbCrLf & _
                    " map: map, " & vbCrLf & _
                    " position: results[0].geometry.location " & vbCrLf & _
                " }); " & vbCrLf & _
            " } else { " & vbCrLf & _
                "  " & vbCrLf & _
            " } " & vbCrLf & _
        " }); " & vbCrLf & _
    "  " & vbCrLf & _
        " map = new google.maps.Map(document.getElementById(""map_canvas""), myOptions); " & vbCrLf & _
    " } " & vbCrLf & _
    "  " & vbCrLf & _
    "  " & vbCrLf & _
    " </script> " & vbCrLf & _
    " </head> " & vbCrLf & _
    " <body onload=""initialize()""> " & vbCrLf & _
    "     <div id="" map_canvas="" style=""></div> " & vbCrLf & _
    "  " & vbCrLf & _
    "   </body> " & vbCrLf & _
    " </html> "
        DisplayHtml(a)
    End Sub

    Private Sub DisplayHtml(ByVal html As String)
        WebBrowser1.Navigate("about:blank")
        If WebBrowser1.Document IsNot Nothing Then
            WebBrowser1.Document.Write(String.Empty)
        End If
        WebBrowser1.DocumentText = html
    End Sub
#End Region

Posted 30-Jul-13 19:06pm

zealSYS

Solution 2

Many thanks for your help shakil0304003. However, I already came across both articles previously in my search for a solution.

Unfortunately, while the 1st reference talks about a .Net CompactFramework for PDAs and is complex in it's coding, the 2nd reference leaves the same question that I've got unanswered (customised GoogleMaps through WebBrowser control in a C# WinForm application).

Sofar I got to (not so elegant) code versions:

private void button1_Click(object sender, EventArgs e)
{
    // UpdateGoogleMap();
    StringBuilder queryAddress = new StringBuilder();
    // Open locally stored html file in webbroswer control, not very ellegant at all
    queryAddress.Append("C:\\GMtest\\GoogleMapsV3.html");

    //Open Google's example code, this requires the HTML code to be hosted on a web server (not acceptable).
    queryAddress.Append("http://code.google.com/apis/maps/documentation/javascript/examples/map-coordinates.html");

    // Any other possible option? 

    this.webBrowser1.Navigate(queryAddress.ToString());
}

Option two was to directly inject html code (dirty aproach?, everything JScript wise would have to be manually inserted/coded):

<preprivate void="" eventargs="" mode="hold" />{
    object empty = System.Reflection.Missing.Value;
    axWebBrowser1.Navigate("about:blank", ref empty, ref empty, ref empty, ref empty);
    // Manuall inject HTML code instead of using a locally stored file: C:\GMtest\GoogleMapsV3.html 
    setBrowserHtml(" <h1>Hello world!</h1>");
}

Is there any elegant and simple solution to what I want to achieve?

Posted 24-Oct-10 0:45am

simon_parkas

Updated 24-Oct-10 0:46am

v2

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shakil0304003 · Accepted Answer · 2010-10-23T06:55:00

Solution 1

You can see this links

Click

Click

Posted 23-Oct-10 6:55am

shakil0304003