Sequence contains no elements(system.invalidoperationexception: sequence contains no elements)

Question

0.00/5 (No votes)

See more:

C#

public ActionResult Details(int id)
        {
            adminContext AdminContext = new adminContext();
            admin user =AdminContext.userAdmin.Single(xyz => xyz.recid == id);
            return View(user);
        }

context

C#

public class adminContext :DbContext
    {
        public DbSet<admin> userAdmin { get; set; }
    }

What I have tried:

i created a context class and calling that context class in web config file then am calling those data through controller the above code please help me to find a solution

Posted 22-Sep-16 18:55pm

S k Guptha

Updated 22-Sep-16 19:43pm

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Karthik_Mahalingam · Accepted Answer · 2016-09-22T19:43:00

use SingeOrDefault[^]

C#

admin user = AdminContext.userAdmin.SingleOrDefault(xyz => xyz.recid == id);
           if(user !=null)
           {
               // your code to process
           }
           else
           {
               // show validation message, for item not present
           }