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ASP.Net MVC Error

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ASP.Net MVC Error

ch chandrakala

7yAsked Sep 8, 2019, 2:51 PM682.NET

Code:

[HttpGet]

public ActionResult Edit(int ? employeeid)

{

EmployeeDataAccess employeeDataAccess = new EmployeeDataAccess();

Employee employee = employeeDataAccess.Employees.Single(emp => emp.EmployeeId == employeeid);

return View(employee);

}

Error: Sequence contains no matching element

Please Help me...

3 Replies

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Tamal Marick7y ago
Hi Chandrakala,
'Single()' is returning null, that's why its get error, you should do null check for employee object and it's better to use 'SingleOrDefault()'

[HttpGet]
public ActionResult Edit(int ? employeeid)
{
EmployeeDataAccess employeeDataAccess = new EmployeeDataAccess();
Employee employee = employeeDataAccess.Employees.SingleOrDefault(emp => emp.EmployeeId == employeeid);
return View(employee);
}
+1
Sonu Gupta7y ago
Hi,

Use the SingleOrDefault() instead of Single()

Like this -

[HttpGet]
public ActionResult Edit(int ? employeeid)
{
EmployeeDataAccess employeeDataAccess = new EmployeeDataAccess();
Employee employee = employeeDataAccess.Employees.SingleOrDefault(emp => emp.EmployeeId == employeeid);
return View(employee);
}
+1
Rajanikant Hawaldar7y ago
Hi Chandrakala, Single is returning null, so its error please go through this discussion and you should do null check for employee object and better use 'SingleOrDefault'

https://stackoverflow.com/questions/3994336/sequence-contains-no-matching-element

https://social.msdn.microsoft.com/Forums/en-US/b73e5838-6d89-4043-84dc-5224a137c409/sequence-contains-no-matching-element?forum=linqprojectgeneral
+1