Join the data of different Lists present in different classes-CodePudding


public class EmpManagement
{
    public List<Employee> empList = new List<Employee>();

    //Method for adding new employee
    public void AddEmp(Employee emp)
    {
        empList.Add(emp);
    }

    public void displayEmp(Employee emp)
    {
        Console.WriteLine("["   emp.Empname   "]");
    }

    //Method for viewing all employees
    public void ShowEmp()
    {
        foreach (var e in empList)
        {
            displayEmp(e);
        }
    }
}


public class Role
{
    public string RoleName { get; set; }

    public Role(string roleName)
    {
        RoleName = roleName;
    }
}


public class RoleManagement
{
    public List<Role> RoleList = new List<Role>();

    //Method for adding roles
    public void RoleAdd(Role role)
    {
        RoleList.Add(role);
    }

    //Method for viewing all roles
    public void displayRole()
    {
        foreach (var e in RoleList)
        {
            Console.WriteLine(e.RoleName);
        }
    }
}

Join the above two lists in a different class

How can i add below two Lists into another list of different class

I am facing a problem while using a interface in one class and extending into the new class

I am also unable to use contains keyword, the compiler says that the name does not exist in current context

CodePudding user response：

You could not add two lists of different types in another single list. But you could still take casting into consideration and cast the two data types into a single data type and then perform the combination of the two lists into another single list. for more information, you could refer to the following :

https://linuxhint.com/csharp-combine-two-lists/#:~:text=We will demonstrate an example,cs” extension.

CodePudding user response：

First, declare two lists and join these two in another list. Please check the example below

List <string> list1 = new List <string>(){"L1L1","L1L2","L1L3"};
List <string> list2 = new List <string>(){"L2L1","L2L2","L2L3"};
List<string> joinList = list1.Join(list2);

Please see another example which is given below.

public class Role
{
   public string name { get; set; }
}

public class Role2
{
   public string name { get; set; }
}

public class RoleManagement
{
   public List<Role> r1 = new List<Role>();
   public List<Role> r2 = new List<Role>();

   List<string> joinList2 = r1.Join(r2);
}