.NET Core 3.1 - EntityFrameworkCore - DBContext.Query 已过时

Question

I find many examples and tutorials where functions are obsolete, but it's hard to find replacements for them

here is an examble, the Query function is obsolete, yet I cannot find what to use in it's place

SqlParameter usernameParam = new SqlParameter("@username", usernameVal ?? (object)DBNull.Value);
SqlParameter passwordParam = new SqlParameter("@password", passwordVal ?? (object)DBNull.Value);

string sqlQuery = "EXEC [dbo].[LoginByUsernamePassword] @username, @password";

lst = await context.Query<Authenticate>().FromSql(sqlQuery, usernameParam,passwordParam).ToListAsync();    

in this case, this line does not compile:

lst = await context.Query<Authenticate>().FromSql(sqlQuery, usernameParam, passwordParam).ToListAsync();

context beeing a DbContext instance

anyone knows how to fix this?

I have checked the microsoft doc, it says it's obsolete but does not point to it's replacement

Answer 1

The replacement for Query<T>() is Set<T>() .

So following your example it'd be something like this:

lst = await context.Set<Authenticate>().FromSqlRaw(sqlQuery, usernameParam,passwordParam).ToListAsync();