How do I get the list of role and number of users in them ASP.NET MVC

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Please how do I get the list of roles, along with the number of users having the role? something like Admin 3, Staff 7, Supervisor 12 etc.

What I have tried:

I have tried this

var users = allusers.Where(x=>x.Roles.Select(role => role.Name).Contains("User")).count;

but this is just for one role. I need it for all the roles, and when a new role is added in the db, it should also add to the list.

Thanks

Posted 16-Jan-18 19:14pm

Ifeanyi Wisdom Onyejekwe

Updated 16-Jan-18 19:54pm

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debasish mishra · Answer 1 · 2018-01-16T19:53:00

Solution 1

You'll get an idea how to implement.

Assigning Roles to Users (C#) | Microsoft Docs[^]

Posted 16-Jan-18 19:53pm

debasish mishra

Comments

Ifeanyi Wisdom Onyejekwe 17-Jan-18 2:25am

Well, it just made it complicated...Thanks anyway

Animesh Datta · Answer 2 · 2018-01-16T21:25:00

Hello,
Try something like this way

DataTable dtuserrole=new DataTable();
dtuserrole.Columns.Add("Name");
dtuserrole.Columns.Add("Role");

dtuserrole.Rows.Add("A","Admin");
dtuserrole.Rows.Add("B","Admin");
dtuserrole.Rows.Add("C","User");
dtuserrole.Rows.Add("D","User");
dtuserrole.Rows.Add("E","Stuff");
dtuserrole.Rows.Add("F","User");
dtuserrole.Rows.Add("G","Superuser");
dtuserrole.Rows.Add("H","User");
dtuserrole.AcceptChanges();

var results = (from p in dtuserrole.AsEnumerable()
               group p by new {Role=p.Field<string>("Role")}into g
      select new { Role = g.Key, Count = g.Count()});

and the output will be

		foreach(var dr in results)
				Console.WriteLine("Role: "+dr.Role + "; Count: "+dr.Count);

Role: { Role = Admin }; Count: 2
Role: { Role = User }; Count: 4
Role: { Role = Stuff }; Count: 1
Role: { Role = Superuser }; Count: 1

Thanks