wpf 网络浏览器控件和谷歌地图，叠加灰色图像 [英] wpf webbrowser control and google maps, overlays gray image
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问题描述
我使用c#中的webbrowser控件渲染谷歌地图已经很久了.最近，谷歌地图现在加载，然后覆盖一个灰色框.看图
I have been using the webbrowser control in c# to render google maps for a long time. Recently, google maps now loads up and then a gray box is overlaid. See the image
http://www.condoresorts.com/Debug/webdebug.png
有没有人知道是什么导致了这种情况?
Anyone have the slightest idea what would cause this?
this.webBrowser1.DocumentText = @"<iframe width=""425"" height=""350"" frameborder=""0"" scrolling=""no"" marginheight=""0"" marginwidth=""0"" src=""https://maps.google.com/maps?f=d&source=s_d&saddr=Oklahoma+City,+OK&daddr=texas&hl=en&geocode=FSgxHQIddAQw-imB0vh-VIqthzGdOk_RdBKiMw%3BFVfN5wEdi54L-ilJMoILNnBAhjE83ggYjxzrFg&aq=t&sll=39.632471,-56.554076&sspn=61.466508,135.263672&mra=ls&ie=UTF8&t=m&z=7&output=embed""></iframe><br /><small><a href=""https://maps.google.com/maps?f=d&source=embed&saddr=Oklahoma+City,+OK&daddr=texas&hl=en&geocode=FSgxHQIddAQw-imB0vh-VIqthzGdOk_RdBKiMw%3BFVfN5wEdi54L-ilJMoILNnBAhjE83ggYjxzrFg&aq=t&sll=39.632471,-56.554076&sspn=61.466508,135.263672&mra=ls&ie=UTF8&t=m&z=7"" style=""color:#0000FF;text-align:left"">View Larger Map</a></small>";
Noseratio 是正确的.我跟着他的链接，实现了项目的代码，它不再有这种行为.
Noseratio was correct. I followed his link, implemented the code for the project and it no long had that behavior.
amespace WebBroweerControls{公开课 Form1{System.Windows.Forms.WebBrowser webBrowser1 = null;
amespace WebBroweerControls { public class Form1 { System.Windows.Forms.WebBrowser webBrowser1 = null;
public Form1(System.Windows.Forms.WebBrowser br)
{
webBrowser1 = br;
SetBrowserFeatureControl();
}
private void Form1_Load(object sender, EventArgs e)
{
//DoNavigationAsync().ContinueWith(_ =>
//{
// MessageBox.Show("Navigation complete!");
//}, TaskScheduler.FromCurrentSynchronizationContext());
//var html = "<iframe width=\"425\" height=\"350\" frameborder=\"0\" scrolling=\"no\" marginheight=\"0\" marginwidth=\"0\" " +
// "src=\"https://maps.google.com/maps?f=d&source=s_d&saddr=Oklahoma+City,+OK&daddr=texas&hl=en&" +
// "geocode=FSgxHQIddAQw-imB0vh-VIqthzGdOk_RdBKiMw%3BFVfN5wEdi54L-ilJMoILNnBAhjE83ggYjxzrFg&aq=t&sll=39.632471," +
// "-56.554076&sspn=61.466508,135.263672&mra=ls&ie=UTF8&t=m&z=7&output=embed\">" +
// "</iframe>" +
// "<br /><small><a href=\"https://maps.google.com/maps?f=d&source=embed&saddr=Oklahoma+City,+OK&daddr=texas" +
// "&hl=en&geocode=FSgxHQIddAQw-imB0vh-VIqthzGdOk_RdBKiMw%3BFVfN5wEdi54L-ilJMoILNnBAhjE83ggYjxzrFg&aq=t&" +
// "sll=39.632471,-56.554076&sspn=61.466508,135.263672&mra=ls&ie=UTF8&t=m&z=7\" style=\"color:#0000FF;" +
// "text-align:left\">View Larger Map</a></small>";
webBrowser1.Navigate("http://www.condoresorts.com/Directions/PrintShares/Coyote%20Lakes/Pillars%20to%20Coyote%20Lakes.htm");
}
private async Task DoNavigationAsync()
{
TaskCompletionSource<bool> documentCompleteTcs = null;
WebBrowserDocumentCompletedEventHandler handler = delegate
{
if (documentCompleteTcs.Task.IsCompleted)
return;
documentCompleteTcs.SetResult(true);
};
documentCompleteTcs = new TaskCompletionSource<bool>();
this.webBrowser1.DocumentCompleted += handler;
// could do this.wb.Navigate(url) here
this.webBrowser1.DocumentText = "<!DOCTYPE html><head><meta http-equiv='X-UA-Compatible' content='IE=edge'/></head>" +
"<body><input size=50 type='text' placeholder='HTML5 if this placeholder is visible'/></body>";
await documentCompleteTcs.Task;
this.webBrowser1.DocumentCompleted -= handler;
dynamic document = this.webBrowser1.Document.DomDocument;
dynamic navigator = document.parentWindow.navigator;
var info =
"\n navigator.userAgent: " + navigator.userAgent +
"\n navigator.appName: " + navigator.appName +
"\n document.documentMode: " + document.documentMode +
"\n document.compatMode: " + document.compatMode;
MessageBox.Show(info);
}
private static void SetBrowserFeatureControl()
{
// http://msdn.microsoft.com/en-us/library/ee330720(v=vs.85).aspx
// WebBrowser Feature Control settings are per-process
var fileName = System.IO.Path.GetFileName(Process.GetCurrentProcess().MainModule.FileName);
// make the control is not running inside Visual Studio Designer
if (String.Compare(fileName, "devenv.exe", true) == 0 || String.Compare(fileName, "XDesProc.exe", true) == 0)
return;
SetBrowserFeatureControlKey("FEATURE_BROWSER_EMULATION", fileName, GetBrowserEmulationMode());
}
private static void SetBrowserFeatureControlKey(string feature, string appName, uint value)
{
using (var key = Registry.CurrentUser.CreateSubKey(
String.Concat(@"Software\Microsoft\Internet Explorer\Main\FeatureControl\", feature),
RegistryKeyPermissionCheck.ReadWriteSubTree))
{
key.SetValue(appName, (UInt32)value, RegistryValueKind.DWord);
}
}
private static UInt32 GetBrowserEmulationMode()
{
int browserVersion = 7;
using (var ieKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Internet Explorer",
RegistryKeyPermissionCheck.ReadSubTree,
System.Security.AccessControl.RegistryRights.QueryValues))
{
var version = ieKey.GetValue("svcVersion");
if (null == version)
{
version = ieKey.GetValue("Version");
if (null == version)
throw new ApplicationException("Microsoft Internet Explorer is required!");
}
int.TryParse(version.ToString().Split('.')[0], out browserVersion);
}
// Internet Explorer 10. Webpages containing standards-based !DOCTYPE directives are displayed in IE10 Standards mode. Default value for Internet Explorer 10.
UInt32 mode = 10000;
switch (browserVersion)
{
case 7:
// Webpages containing standards-based !DOCTYPE directives are displayed in IE7 Standards mode. Default value for applications hosting the WebBrowser Control.
mode = 7000;
break;
case 8:
// Webpages containing standards-based !DOCTYPE directives are displayed in IE8 mode. Default value for Internet Explorer 8
mode = 8000;
break;
case 9:
// Internet Explorer 9. Webpages containing standards-based !DOCTYPE directives are displayed in IE9 mode. Default value for Internet Explorer 9.
mode = 9000;
break;
default:
// use IE10 mode by default
break;
}
return mode;
}
}
}
刚刚实例化了这个类并将它提供给我的浏览器控件:
Just instantiated this class and fed it my webbrowser control:
WebBroweerControls.Form1 f1 = new WebBroweerControls.Form1(this.webBrowser1);
WebBroweerControls.Form1 f1 = new WebBroweerControls.Form1(this.webBrowser1);
推荐答案
请尝试以下...
var html = "<iframe width=\"425\" height=\"350\" frameborder=\"0\" scrolling=\"no\" marginheight=\"0\" marginwidth=\"0\" " +
"src=\"https://maps.google.com/maps?f=d&source=s_d&saddr=Oklahoma+City,+OK&daddr=texas&hl=en&" +
"geocode=FSgxHQIddAQw-imB0vh-VIqthzGdOk_RdBKiMw%3BFVfN5wEdi54L-ilJMoILNnBAhjE83ggYjxzrFg&aq=t&sll=39.632471," +
"-56.554076&sspn=61.466508,135.263672&mra=ls&ie=UTF8&t=m&z=7&output=embed\">" +
"</iframe>" +
"<br /><small><a href=\"https://maps.google.com/maps?f=d&source=embed&saddr=Oklahoma+City,+OK&daddr=texas" +
"&hl=en&geocode=FSgxHQIddAQw-imB0vh-VIqthzGdOk_RdBKiMw%3BFVfN5wEdi54L-ilJMoILNnBAhjE83ggYjxzrFg&aq=t&" +
"sll=39.632471,-56.554076&sspn=61.466508,135.263672&mra=ls&ie=UTF8&t=m&z=7\" style=\"color:#0000FF;" +
"text-align:left\">View Larger Map</a></small>";
webBrowser1.NavigateToString(html);
基本上相同的代码...只是使用 NavigateToString() 将 html 参数加载到 WebBrowser.
Basically the same code... Just used NavigateToString() to load the html parameter to WebBrowser.
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