SQLite error Insufficient parameters supplied to the command at Mono.Data.Sqlite.SqliteStatement.BindParameter
Your spelling for @Category in INSERT statement is different from added parameter. You have:
command.Parameters.Add(new SqliteParameter("@Cateogry", "")); ^^^^^^^^^^^ //@CategoryWhere it should be:
Modify your statement to:
command.Parameters.Add(new SqliteParameter("@Category", ""));
This has already been answered correctly, but I wish to add, for further information:
This specific SQLite error string can also be generated if any of the @Parameters are spelled differently in the INSERT statement vs the AddWithValue or .Add(new SqliteParameter... statements.