WPF WebBrowser脚本页面不工作

当我在浏览器中运行html页面时，一切正常。但在WPF WebBrowser无法正常工作。元素没有值。WPF WebBrowser脚本页面不工作

/// <summary> 
/// Interaction logic for GeoDialog.xaml 
/// </summary> 
public partial class GeoDialog : Window 
{ 
    public GeoDialog() 
    { 
     InitializeComponent(); 

     coord.LoadCompleted += webBrowser_LoadCompleted; 
     coord.Loaded += delegate 
     { 
      coord.Navigate(System.IO.Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location) + @"\Location.html"); 
     }; 
     //GetPosition(); 
    } 

    private void webBrowser_LoadCompleted(object sender, NavigationEventArgs e) 
    { 
      string latitude = ""; 
      string longitude = ""; 
      string error = ""; 

      var htmlDocument = coord.Document as HTMLDocument; 
      var latitudeEl = htmlDocument.getElementById("latitude"); 
      var longitudeEl = htmlDocument.getElementById("longitude"); 
      var errorEl = htmlDocument.getElementById("error"); 

      latitude = latitudeEl.getAttribute("value"); 
      longitude = longitudeEl.getAttribute("value"); 
      error = errorEl.getAttribute("value"); 

      if (String.IsNullOrEmpty(error)) 
      { 
       MessageBox.Show(String.Format("Latitude: {0} Longitude: {1}", latitude, longitude)); 
      } 
      else 
       MessageBox.Show(String.Format("Error: {0}", error)); 
    } 
}

Location.html以下标记：

<html xmlns="http://www.w3.org/1999/xhtml"> 
    <head runat="server"> 
     <title></title> 
     <meta http-equiv="X-UA-Compatible" content="IE=10" /> 
     <script type="text/javascript"> 
      window.onload = function() { 
       var latitude = document.getElementById("latitude"); 
       var longitude = document.getElementById("longitude"); 
       var error = document.getElementById("error"); 

       function getLocation() { 
        if (navigator.geolocation) { 
         navigator.geolocation.getCurrentPosition(success, error, options); 
        } 
       } 

       var options = { 
        enableHighAccuracy: true, 
        timeout: 5000, 
        maximumAge: 0 
       }; 

       function success(position) { 
        latitude.value = position.coords.latitude; 
        longitude.value = position.coords.longitude; 
       }; 

       function error(err) { 
        error.value = 'ERROR(' + err.code + '): ' + err.message; 
       }; 


       function showPosition(position) { 
        latitude.value = position.coords.latitude; 
        longitude.value = position.coords.longitude; 
       } 
       getLocation(); 
      } 
     </script> 
    </head> 
    <body> 
     <input type="hidden" id="latitude" /> 
     <input type="hidden" id="longitude" /> 
     <input type="hidden" id="error" /> 
    </body> 
    </html>

或许有任何其他选项，以确定地理坐标。

来源

2015-03-31 Black raven

当你宣布你的瓦尔我可能是错关于这一点，但东西，可能是问题是：纬度，经度等，JS会创建一个占位符寻找该元素，但在C＃中被创建局部变量并将该元素的值分配给所述变量。在这种情况下，您可以声明一个类成员通过引用而不是值访问该元素：'private string Latitude {get {return document.getElementById（...）。innerHtml; } set {document.getElementById（...）。innerHtml = value; }}'这有道理吗？ – CalebB 2015-03-31 04:40:17

我用这段代码，现在一切正常！

internal GeoLoc GetMyGeoLocation() 
     { 
      try 
      { 
       var address = "........."; 
       var requestUri = string.Format("http://maps.googleapis.com/maps/api/geocode/xml?address={0}&sensor=false", Uri.EscapeDataString(address)); 
       request = WebRequest.Create(requestUri) as HttpWebRequest; 
       if (request != null) 
       { 
        var response = request.GetResponse(); 
        var xdoc = XDocument.Load(response.GetResponseStream()); 
        var result = xdoc.Element("GeocodeResponse").Elements("result"); 
        foreach (var item in result) 
        { 
         _geoLoc = new GeoLoc(); 
         _geoLoc.Country = item.Element("formatted_address").Value; 
         var locationElement = item.Element("geometry").Element("location"); 
         _geoLoc.Latitude = locationElement.Element("lat").Value; 
         _geoLoc.Lognitude = locationElement.Element("lng").Value; 
        } 
       } 
       return _geoLoc; 
      } 
      catch (Exception ex) 
      { 
       MessageBox.Show(ex.Message); 
      } 

      return new GeoLoc(); 
     }

来源

2015-03-31 07:03:27

WPF WebBrowser脚本页面不工作

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