handling-protocol-uris

Custom URI protocol links deep link into Visual Studio extensions by registering a protocol.json manifest, using ProvideAppCommandLine to load your package, and routing URI actions to open files or launch settings inside VS.

Deep linking with ProvideAppCommandLine works by surfacing a command-line switch that loads your VSSDK package when a protocol URL is invoked, passing external context from browsers or emails directly into the extension for processing.

To register a URI scheme for a Visual Studio extension, you need a per-extension protocol.json manifest, a ProvideAppCommandLine-based package, and proper URI parsing and validation logic to route actions based on the URI host, path, and query parameters.

You can route actions like opening files from a custom protocol URL in Visual Studio by parsing the URI host, path, and query parameters, then triggering in-process extension commands to open files or jump to specific settings.

This protocol handling approach applies to in-process Visual Studio extensions using VSSDK or Toolkit architectures, requiring a ProvideAppCommandLine-based package to properly intercept and process the registered URI scheme.

Protocol handlers enable one-click deep linking from external sources like browsers or emails, passing rich context via URI host, path, and query parameters, whereas standard command-line arguments lack the structured routing and external invocation capabilities.