c# wpf web browser change background

Question

i work a project in c# wpf and using webbrowser. but my web browser background color is white. i want to change background color to #F222. how to make this
my web browser is bottom of the window

Answer 1

It is recommended that you directly set the background color of the html to #F222. It is currently difficult to set the background color of the WebBrowser(wpf) to a custom color.

Even using Winform's WebBrowser can only set the html document page to black instead of #F222.

An example of using Winform's Webbrowser in wpf is as follows：
1.Right-click the References under the project and select Add Reference...
2.Search for adding System.Windows.Forms and WindowsFormsIntegration references and click OK.
3.Add namespace in Window.

xmlns:wf="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"  

complete code：

    <Window x:Class="WpfApp2.MainWindow"  
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"  
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"  
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"  
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"  
        xmlns:local="clr-namespace:WpfApp2"   
         xmlns:wf="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"  
        mc:Ignorable="d"   
        Title="MainWindow" Height="450" Width="1200">  
    <StackPanel x:Name="grid" Background="#f222" Orientation="Horizontal"  >  
        <WindowsFormsHost x:Name="wfhSample" Width="400" Height="400" Canvas.Right="10">  
            <WindowsFormsHost.Child>  
                <wf:WebBrowser x:Name="wb" DocumentCompleted="wb_DocumentCompleted"/>  
            </WindowsFormsHost.Child>  
        </WindowsFormsHost>  
    </StackPanel>  
</Window>  

MainWindow.xaml.cs:

using System.Windows;  
using System.Windows.Forms;  
namespace WpfApp2  
{  
    public partial class MainWindow : Window  
    {  
        public MainWindow()  
        {  
            InitializeComponent();  

            wb.Navigate("http://google.com");  
        }  
        private void wb_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)  
        {  
            HtmlDocument document = (HtmlDocument)wb.Document;  
            document.Body.Style = "background-color:black";  
        }  
    }  
}  

The result:

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