Take data from different tables and display it in View Index in mvc4 - asp.net-mvc-4

Question

I have 2 tables Work_table and Employee_table.I want to display emp_id from Work_table and corresponding emp_name from Employee_table in the index view of Employee_table.
my models are:
namespace MvcConQuery.Models
{
[Table("Work_Table")]
public class EnquiryModel
{
[Key]
[DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
public Int32 Enq_id { get; set; }
[Required]
[Display(Name="Name")]
public string CustomerName { get; set; }
[ReadOnly(true)]
public string Date
{
get
{
DateTime Date = DateTime.Now;
return Date.ToString("yyyy-MM-dd"); ;
}
set{}
}
[Required]
[Display(Name = "Region")]
public string Region { get; set; }
[Required]
[RegularExpression(#"^\(?([0-9]{3})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$", ErrorMessage = "Entered phone number format is not valid.")]
[Display(Name = "Phone number")]
public string Ph_No { get; set; }
[Required]
[DataType(DataType.EmailAddress)]
[Display(Name = "Email_id")]
public string Email_id { get; set; }
[Required]
[Display(Name = "Address")]
public string Address { get; set; }
[Required]
[Display(Name = "Query")]
public string Query { get; set; }
public string Referral { get; set; }
public string Feedback { get; set; }
public string Status { get; set; }
public Int32? Emp_id { get; set; }
public string FollowUpDate { get; set; }
public List<EmployeeModel> Employees { get; set; }
}}
namespace MvcConQuery.Models
{
[Table("Employee_Table")]
public class EmployeeModel
{
[Key,Column(Order=0)]
[DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
//[ForeignKey("EnquiryModel")]
public Int32 Emp_id { get; set; }
public string Emp_Name{ get; set; }
//[Key,Column(Order=1)]
public string Region { get; set; }
//[ForeignKey("Region")]
public string Emp_PhNo { get; set; }
public string Emp_Address { get; set; }
public List<EnquiryModel> Enquires { get; set; }
}
}
How to write controller?
I stucked when writing the function in controller.
public ActionResult Index()
{
}
Please suggest a solution. thanks in advance.
Regards

Answer 1

I was wrong earlier, I made out from your code that there is a many -to- many relationship between Employee and Work tables. For my convenience, I have used Job as the name for your Work table / model.
I hope that you want to display a list of EmployeeIds along with the corresponding EmployeeNames in the Index View. I have added an extra property called JobName to viewmodel, you can have other properties too.
For that matter, create a ViewModel EmployeeViewModel and bind the index view of your action result with an IEnumerable<EmployeeViewModel>. The definition for EmployeeViewModel can be something like -
public class EmployeeViewModel
{
public int EmployeeId { get; set; }
public string EmployeeName { get; set; }
public string JobName { get; set; }
//..Other memberVariables..
}
Suppose these are your models -
Employee
public class Employee
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int EmployeeId { get; set; }
public string EmployeeName { get; set; }
public string Address { get; set; }
public virtual ICollection<Job> Jobs { get; set; }
}
And WorkTable, renamed it as Job for my own convenience
public class Job
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int JobId { get; set; }
public string JobName { get; set; }
public JobCategory JobCategory { get; set; }
public int EmployeeId { get; set; }
public virtual ICollection<Employee> Employees { get; set; }
}
In your Index Action, you create a result set by joining the two tables, bind it to IEnumerable<EmployeeViewModel> and pass that as a model to the view. The View should receive a model of type IEnumerable<EmployeeViewModel> as I mentioned earlier,so you need to query your entities which should be something like -
public ActionResult Index()
{
//..something like this..this is IQueryable..
//...convert this to IEnumerable and send this as the model to ..
//..the Index View as shown below..here you are querying your own tables,
//.. Employee and Job,and binding the result to the EmployeeViewModel which
//.. is passed on to the Index view.
IEnumerable<EmployeeViewModel> model=null;
model = (from e in db.Employees
join j in db.Jobs on e.EmployeeId equals j.EmployeeId
select new EmployeeViewModel
{
EmployeeId = e.EmployeeId,
EmployeeName = e.EmployeeName,
JobName = j.JobName
});
return View(model);
}
Your index view should be something like -
#model IEnumerable<MyApp.Models.EmployeeViewModel>
#{
ViewBag.Title = "Index";
}
<table>
<tr>
<th>
#Html.DisplayNameFor(model => model.EmployeeId)
</th>
<th>
#Html.DisplayNameFor(model => model.EmployeeName)
</th>
<th>
#Html.DisplayNameFor(model => model.JobName)
</th>
<th></th>
</tr>
#foreach (var item in Model) {
<tr>
<td>
#Html.DisplayFor(modelItem => item.EmployeeId)
</td>
<td>
#Html.DisplayFor(modelItem => item.EmployeeName)
</td>
<td>
#Html.DisplayFor(modelItem => item.JobName)
</td>
</tr>
}
</table>
In this above solution, I have made an attempt to generate a situation similar to yours and address your concerns. I hope this brings some sort of respite to your worries and helps you move ahead. Take this as a map and try follow the routes to find your own destination/solution. Btw, sorry for this delayed reply. Hope this helps.

Answer 2

This code has something missing select new EmployeeviewModel
model = (from e in db.Employees
join j in db.Jobs on e.EmployeeId equals j.EmployeeId
select new EmployeeViewModel
{
EmployeeId = e.EmployeeId,
EmployeeName = e.EmployeeName,
JobName = j.JobName
});