try // Attempt to get the available runtime version string version = CoreWebView2Environment.GetAvailableBrowserVersionString(); // Proceed with initialization catch (WebView2RuntimeNotFoundException) // Trigger your fallback or download prompt Use code with caution. Step 2: Handle the Evergreen Bootstrapper
The Evergreen Runtime can be deployed to client machines in several ways: Evergreen Bootstrapper
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public async Task InitializeWebView()
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Microsoft strongly recommends the Evergreen model for the vast majority of scenarios. It’s the tested, well-documented, and future-proof path.
| Feature | Evergreen | Fixed Version | |------------------------|------------------------------------|----------------------------------| | | Automatic (via Microsoft) | Manual (developer-controlled) | | App size overhead | None (shared runtime) | Large (runtime embedded) | | Security patches | Immediate (OS-level) | Developer must redistribute | | Chromium version | Latest stable (rolling) | Pinned at development time | | Network deployment | Simple (check for runtime presence)| Complex (include binaries) | evergreen webview2
Evergreen WebView2 is a runtime environment that allows developers to embed a modern web browser, specifically Microsoft Edge, into their desktop applications. This enables the use of web technologies such as HTML, CSS, and JavaScript to build desktop applications.
In the modern software landscape, the line between native desktop applications and web experiences is thinner than ever. Developers are increasingly moving away from building everything from scratch, instead opting to embed web content directly into their apps. At the heart of this shift for Windows developers is , specifically its Evergreen distribution mode.
The Evergreen Runtime acts as a shared system component. In the Evergreen distribution mode, the runtime is not packaged directly with your application. Instead: try // Attempt to get the available runtime
You can check for the existence of the following registry key or file path:
Total control over the exact rendering engine version, ensuring no unexpected UI breaking changes.
WebView2 requires a folder to store browser data like cookies, cache, and local storage. Never let the runtime use the default application directory, as it often lacks write permissions. Explicitly map the UDF to a secure location like AppData. This link or copies made by others cannot be deleted
Developers often worry that an automatic update will break their native app's UI. Microsoft mitigates this by maintaining strict backward compatibility for the WebView2 SDK APIs. If a web-standard breaking change does occur within the Chromium project, Microsoft often implements compatibility flags or staggered rollouts to give developers time to adapt. Implementation Strategies for Developers