How Can I Make My .NET WebBrowser Control Use IE9 Rendering for SVG Compatibility?

Solving SVG Compatibility Issues with the .NET WebBrowser Control

The .NET WebBrowser control defaults to IE7 Standards mode for rendering web pages, which can cause compatibility problems, especially with SVG. To utilize the improved SVG rendering capabilities of IE9, you have two options:

Method 1: HTML Meta Tag

Add the following meta tag within the section of your HTML, before any CSS or JavaScript includes:

<meta http-equiv="X-UA-Compatible" content="IE=9">

This instructs the browser to render the page using IE9's rendering engine.

Method 2: Registry Modification

Alternatively, you can modify the Windows Registry to force IE9 mode for your application. This involves creating or modifying a registry key:

1. Navigate to: HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerMainFeatureControlFEATURE_BROWSER_EMULATION (or HKEY_CURRENT_USER for user-specific settings).

2. Add a new string value named after your application's executable (e.g., myApplicationName.exe).

3. Set the value data to 9000. This forces the WebBrowser control to render pages in IE9 compatibility mode. Note that IE8 rendering mode isn't directly accessible through this method. Using HKEY_CURRENT_USER avoids the need for administrator privileges.

By implementing either of these methods, you can ensure that the .NET WebBrowser control renders SVG content correctly, leveraging the enhanced capabilities of IE9.

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