How Do I Display Data From More Than One Table Using Linq.

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i have the following model and table

C#

  public class Student
{
  public int StudentId{get;set;}
  public string StudentName{get;set;}
}

public class Club
{
  public int ClubId{get;set;}
  public string ClubName{get;set;}
}

public class House
{
  public int HouseId{get;set;}
  public string HouseName{get;set;}
}

what i need to acheive is to count how many students, how many clubs and how many house and display them in Data.cshtml view using Data action method in my controller

i then created a model to to get the data

C#

public class Data
    {
        public int StudCount { get; set; }

        public int ClubCount { get; set; }

        public int HouseCount { get; set; }

         
    }

how do i write a linq statement to be able to count no of student, no of club, and no of house from differnt tables

Posted 5-Jun-15 23:47pm

Member 11746146

Updated 6-Jun-15 0:21am

Mostafa Asaduzzaman

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Mostafa Asaduzzaman 7-Jun-15 6:55am

have you tried yet with Solution 1 ?

Member 11746146 8-Jun-15 17:26pm

yes the solution helps

Member 11746146 8-Jun-15 17:25pm

thanks the solution helped

Mostafa Asaduzzaman 8-Jun-15 17:31pm

you are welcome.

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Mostafa Asaduzzaman · Accepted Answer · 2015-06-06T00:18:00

Assuming you have a DbContext (YourDbContext) defined and using the DbContext you can write the queries as below:

C#

using(var dbc = new YourDbContext())
{
var noofstudents= dbc.Students.Select(s => s.StudentId).Count();
var noofclubs = dbc.Clubs.Select(s=>s.ClubId).Count();
var noofhosues =dbc.Houses.Select(s=>s.HouseId).Count();
}

I think your third model class is House not student.
As the ids in each table are primary(assuming), the counts will return the values as you expect.
Also I have used the plural forms of the class as table names, you replace them as they are named in your database.

Hope this will help.