Cannot implicitly convert type 'Note6MVCApplication5.Models.SPGetEmpDetailsByEmpIdJoinResult' to 'Note6MVCApplication5.Models.Emp' - asp.net-mvc

Question

public ActionResult Edit(int? id)
{
Emp emp = db.SPGetEmpDetailsByEmpIdJoin(id).SingleOrDefault();
ViewData["DeptId"] = new SelectList(db.SPGetAllDeptDetails().ToList(), "DeptId", "DeptName", emp.DeptId);
return View(emp);
}
Error : Cannot implicitly convert type 'Note6MVCApplication5.Models.SPGetEmpDetailsByEmpIdJoinResult' to 'Note6MVCApplication5.Models.Emp'
Why this error is coming?
I am posting definition of SPGetEmpDetailsByEmpIdJoinResult() which is present in MVCDemoDB.Designer.cs
public partial class SPGetEmpDetailsByEmpIdJoinResult
{
private int _EmpId;
private string _EmpName;
private string _EmpJob;
private decimal _EmpSalary;
private int _DeptId;
private string _DeptName;
public SPGetEmpDetailsByEmpIdJoinResult()
{
}
[global::System.Data.Linq.Mapping.ColumnAttribute(Storage="_EmpId", DbType="Int NOT NULL")]
public int EmpId
{
get
{
return this._EmpId;
}
set
{
if ((this._EmpId != value))
{
this._EmpId = value;
}
}
}
[global::System.Data.Linq.Mapping.ColumnAttribute(Storage="_EmpName", DbType="VarChar(50) NOT NULL", CanBeNull=false)]
public string EmpName
{
get
{
return this._EmpName;
}
set
{
if ((this._EmpName != value))
{
this._EmpName = value;
}
}
}
[global::System.Data.Linq.Mapping.ColumnAttribute(Storage="_EmpJob", DbType="VarChar(50) NOT NULL", CanBeNull=false)]
public string EmpJob
{
get
{
return this._EmpJob;
}
set
{
if ((this._EmpJob != value))
{
this._EmpJob = value;
}
}
}
[global::System.Data.Linq.Mapping.ColumnAttribute(Storage="_EmpSalary", DbType="Money NOT NULL")]
public decimal EmpSalary
{
get
{
return this._EmpSalary;
}
set
{
if ((this._EmpSalary != value))
{
this._EmpSalary = value;
}
}
}
[global::System.Data.Linq.Mapping.ColumnAttribute(Storage="_DeptId", DbType="Int NOT NULL")]
public int DeptId
{
get
{
return this._DeptId;
}
set
{
if ((this._DeptId != value))
{
this._DeptId = value;
}
}
}
[global::System.Data.Linq.Mapping.ColumnAttribute(Storage="_DeptName", DbType="VarChar(50) NOT NULL", CanBeNull=false)]
public string DeptName
{
get
{
return this._DeptName;
}
set
{
if ((this._DeptName != value))
{
this._DeptName = value;
}
}
}
}

Answer 1

It seems to be Type Cast Error. i would suggest declare variable of type 'var' instead of Emp in below statement
Emp emp = db.SPGetEmpDetailsByEmpIdJoin(id).SingleOrDefault();
to something like this
var emp = db.SPGetEmpDetailsByEmpIdJoin(id).SingleOrDefault();
second approach
Define extension method to cast SPGetEmpDetailsByEmpIdJoinResult to Emp some thing like below
sample Emp class
public class Emp
{
public int DeptId { get; set; }
public int EmpId { get; set; }
/*
* define other properties
*/
}
public static Emp ToEmp(this SPGetEmpDetailsByEmpIdJoinResult empResult)
{
return new Emp() {EmpId = empResult.EmpId, DeptId = empResult.DeptId};
}
and call the extension method
Emp emp = db.SPGetEmpDetailsByEmpIdJoin(id).SingleOrDefault().ToEmp();
that would fix your issue. hope this helps :)