C＃Windows窗体应用程序显示谷歌地图v3 [英] C# Windows Forms Application displaying Google Maps v3

问题描述

如何在使用WebBrowser控件的简单C＃Windows窗体应用程序中使用Google地图？



据我所知Google Maps API v3不再需要密钥=我不需要外部专用网站&来自Google的密钥。



此处给出的示例（ http ：//www.codeproject.com/KB/cs/GpsMapping.aspx ）非常接近，但显示的是完整的谷歌地图网站，而不是仅限地图的版本（例如：http://code.google.com/apis/maps/documentation/javascript/examples/map-coordinates.html ）。



我是否错过了关于C＃Forms应用程序中简单API v3集成的重点？ ：confused：

解决方案

非常感谢您的帮助shakil0304003。但是，我之前在搜索解决方案时已经遇到过这两篇文章。



不幸的是，虽然第一篇参考文章讨论了用于PDA的.Net CompactFramework并且编码很复杂，但第二篇参考文献仍然存在我无法回答的相同问题（在C＃WinForm应用程序中通过WebBrowser控件自定义GoogleMaps）。



Sofar我得到（不那么优雅）代码版本：

 private void button1_Click （对象发件人，EventArgs e）
 {
 // UpdateGoogleMap（）; 
 StringBuilder queryAddress = new StringBuilder（）; 
 //在webbroswer控件中打开本地存储的html文件，而不是非常优雅的
 queryAddress.Append（C：\\GMtest\\ GoogleMapsV3.html）; 
 
 //打开Goog​​le的示例代码，这需要将HTML代码托管在Web服务器上（不可接受）。 
 queryAddress.Append（http://code.google.com/apis/maps/documentation/javascript/examples/map-coordinates.html）; 
 
 //还有其他可能的选择吗？ 
 
 this.webBrowser1.Navigate（queryAddress.ToString（））; 
} 

选项二是直接注入html代码（脏aproach ?,所有JScript智能必须手动插入/编码）：

< preprivate void =eventargs =mode =hold/> {
 object empty = System.Reflection.Missing.Value; 
 axWebBrowser1.Navigate（about：blank，ref为空，ref为空，ref为空，ref为空）; 
 // Manuall注入HTML代码而不是使用本地存储的文件：C：\ GMtest \ GoogleMapsV3.html 
 setBrowserHtml（< h1> Hello world！< / h1>）; 
} 

是否有任何优雅而简单的解决方案可以实现我的目标？

你可以看到这个链接


点击


点击

下面是代码，我在一个项目中使用

 ＃RegionGoogleMap
   Dim  GoogleMapLocation  As   String  =   
 私有  Sub  LoadGoogleMap（ ByVal 位置作为 字符串）
 如果 GoogleMapLocation =位置那么 退出  Sub  
 GoogleMapLocation =位置
  Dim  a  As   String  =  & vbCrLf& _ 
  < html>& vbCrLf& _ 
  < head>& vbCrLf& _ 
  < meta name =viewportcontent =initial-scale = 1.0， user-scalable = no/>& vbCrLf& _ 
  & vbCrLf& _ 
  < script type =text / javascriptsrc =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':(地址？地址：& 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）
 结束  Sub  
 
 私人  Sub  DisplayHtml（ ByVal  html  As  字符串）
 WebBrowser1.Navigate（  about：blank）
 如果 WebBrowser1.Document  IsNot   Nothing  然后 
 WebBrowser1.Document.Write（ String .Empty）
 结束 如果 
 WebBrowser1.DocumentText = html 
 结束  Sub  
  #End Region  

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:

解决方案

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?

You can see this links

Click

Click

Below is code, I am using in a project

#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

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