Question

As I was going through implementing a custom role provider I came across these two methods

public override string[] GetUsersInRole(string roleName) {}
public override string[] FindUsersInRole(string roleName, string usernameToMatch) {}

Aren’t these the same thing? You provide a role and get all the users that are in that role back? Actually I don’t even get what the point of the usernameToMatch in the FindUsersInRole is for… My understanding is that is should return multiple users, but wouldn’t this limit it to one?

Answer 1

If I remember right GetUsersInRole will get all the users that have that role. This is the aspnetdb sql query it executes :

SELECT u.UserName
FROM   dbo.aspnet_Users u, dbo.aspnet_UsersInRoles ur
WHERE  u.UserId = ur.UserId AND @RoleId = ur.RoleId AND u.ApplicationId = @ApplicationId
ORDER BY u.UserName

In FindUsersInRole, you send over a rolename as well as a username pattern. The method will return a user that match the username. Here is the aspnetdb sql for this method :

SELECT u.UserName
FROM   dbo.aspnet_Users u, dbo.aspnet_UsersInRoles ur
WHERE  u.UserId = ur.UserId AND @RoleId = ur.RoleId AND u.ApplicationId = @ApplicationId AND LoweredUserName LIKE LOWER(@UserNameToMatch)
ORDER BY u.UserName

So the two methods serve two different functions.