C# 如何在 WebBrowser 实例中的 WPF 和 JavaScript 之间进行通信？
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How to communicate between WPF and JavaScript in a WebBrowser instance?
提问by koalabruder
I have a C#/WPF application with an embedded browser (WebBrowser) with some JavaScript. How can they communicate with each other in both directions? Is it practicable to use the URL?
我有一个带有嵌入式浏览器 (WebBrowser) 和一些 JavaScript 的 C#/WPF 应用程序。它们如何在两个方向上相互通信？使用 URL 是否可行？
JS->WPF: Listen for changes.
WPF->JS: Change the URL to javascript:alert('hello');
JS->WPF：监听变化。WPF->JS：将 URL 更改为javascript:alert('hello');
Is there a better way?
有没有更好的办法？
采纳答案by koalabruder
It's important to know that there are two WebBrowser. One for Windows Forms and one for WPF. The link below uses the WPF one. http://www.dotnetfunda.com/articles/article840-working-with-webbrowser-in-wpf.aspx
重要的是要知道有两个 WebBrowser。一种用于 Windows 窗体，一种用于 WPF。下面的链接使用 WPF 之一。 http://www.dotnetfunda.com/articles/article840-working-with-webbrowser-in-wpf.aspx
回答by mlemay
To invoke JavaScript function from C#
从 C# 调用 JavaScript 函数
object result = mWebBrowser.Document.InvokeScript("FunctionName", new String[] { Parameter1 });
// If the function succeed (my function return a boolean)
if (null == result || result.ToString().ToLower() == "false")
{
// Code
}
Is this what you want? Like this your c# code call your javascript, and it returns a value
这是你想要的吗？像这样你的 c# 代码调用你的 javascript，它返回一个值
My WPF Xaml:
我的 WPF Xaml：
<UserControl x:Class="MediaViewer.WebViewer"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:wf="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms">
<WindowsFormsHost>
<wf:WebBrowser x:Name="mWebBrowser" />
</WindowsFormsHost>
</UserControl>
