Settings - icsharpcode/ilspy-vscode GitHub Wiki

ILSpy extension may be configured through VS Code's settings page.

Extension in Marketplace

Auto Load Dependencies If active (default), automatically places additional dependencies of analyzed assemblies in assembly list as soon as they are needed. Those assemblies are temporary (presented in blue color) and are not persisted even if Load Previous Assemblies option is set (see below).
Default Output Language Defines which output language is used by default to decompile assemblies.
Load Previous Assemblies If active (default), all assemblies you actively add to assembly list are restored on next restart of VS Code. The list is saved per-workspace, if a workspace is open, or globally without an open workspace.
Show Compiler Generated Symbols If activated, compiler-generated symbols are shown in assembly tree or found by search/analyzer functions. Default is inactive.