Error While Deleteing a record in a table in MVC3 using EntityFramework & Linq

Question

0.00/5 (No votes)

See more:

Hii to all,

when i want to delete a record iam finding the following Error
ERROR:-Store update, insert, or delete statement affected an unexpected number of rows (0). Entities may have been modified or deleted since entities were loaded. Refresh ObjectStateManager entries

This Is My Controller Code:-
public ActionResult About()
{
//Employee model = new Employee();
return View();
}
[HttpPost]
public ActionResult About(Employee model)
{
using (personalEntities db = new personalEntities())
{
checkeddetail obj = new checkeddetail();
var delete = (from s in db.checkeddetails where model.searchByName == s.textname select s.empid).FirstOrDefault();
obj.empid = delete;
db.checkeddetails.Attach(obj);
db.checkeddetails.DeleteObject(obj);
db.SaveChanges();
}
return View();
}
Please guide me how should i overcome the following Error

Thanks
Ramu

Posted 8-Jul-13 0:52am

Ram7 from Hyderabad

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)

Shanu2rick · Accepted Answer · 2013-07-08T01:05:00

Solution 1

It may be because your personal identity ID(key) is missing. Check the value by putting a break point.
For more information, check this[^] thread
EDIT:

C#

public ActionResult About()
{
    //Employee model = new Employee();
    return View();
}
[HttpPost]
public ActionResult About(Employee model)
{
   using (personalEntities db = new personalEntities())
   {
      var delete = (from s in db.checkeddetails where model.searchByName == s.textname select s.empid).FirstOrDefault();
      db.checkeddetails.DeleteObject(delete);
      db.SaveChanges();
   }
   return View();
}

Posted 8-Jul-13 1:05am

Shanu2rick

Updated 8-Jul-13 1:52am

v2

Comments

Ram7 from Hyderabad 8-Jul-13 7:21am

Hi Shanu,
Thanks for ur quick responce,ya i checked once again, whatever the ID i need is getting showing in obj,iam finding the error at db.savechanges()line of my code,
Thanks
Ramu

Shanu2rick 8-Jul-13 7:53am

i have updated the answer with the code...
you may want to check

Ram7 from Hyderabad 8-Jul-13 8:17am

Hi Thanku again,nw its working fine..............