如何在SQLite中检查数据库是否存在C＃

I'm currently programming an app in C# and using sqlite as an embedded database. I have got my app to create a new database on start-up, but how do I get it to check if the database exists? If it does exist how do I get it to use it, and if not how to create a new database?I'm currently programming an app in C# and usin