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Does the .NET WebBrowser Control Fully Support IE9's Features, Including SVG Rendering?

Susan Sarandon

Jan 26, 2025 am 12:09 AM

Does the .NET WebBrowser Control Fully Support IE9's Features, Including SVG Rendering?

Unlocking IE9's Power in Your .NET WebBrowser Control

Migrating to IE9 raises questions about the .NET WebBrowser control's compatibility. Will it fully support IE9's advancements, especially SVG rendering?

The WebBrowser control uses your system's installed IE version, but defaults to IE7 Standards mode for compatibility. To leverage IE9's features, including SVG support, you need to employ a simple solution: add the meta tag <meta content="IE=9" http-equiv="X-UA-Compatible"> within the section of your HTML. Crucially, this tag must appear before any CSS or JavaScript includes.

Alternatively, a registry entry can be created: HKLMSOFTWAREMicrosoftInternet ExplorerMainFeatureControlFEATURE_BROWSER_EMULATION. Add a new key named myApplicationName.exe (replace with your application's name) and set its value data to 9000. This forces the WebBrowser control to render pages in IE9 mode.

Important Note: The official documentation for registry key values isn't entirely precise; IE8 mode emulation isn't supported via this method. Also remember that writing to HKLM requires administrator privileges, while HKCU offers a less privileged alternative.

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