Update record using entity framework 6 webform asp.net

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Hello,
I am trying to update my a record using Entity framework 6 with asp.net webform.
I create repository for the Language class in entity framework so I can call them from outside .
this is my code:

what can I do, and what is the problem with my code?

What I have tried:

public static bool Update(Language lang)
{
try
{
using(QuranDBEntities context = new QuranDBEntities())
{
Language _lang = context.Languages.Find(lang.LanguageID);
_lang = lang;
context.Languages.Attach(_lang);
context.SaveChanges();
}
return true;
}
catch(Exception ex)
{
Auth.Document_Exception(ex);
return false;
}
}

but the code through an exception :

C#

System.ObjectDisposedException: The ObjectContext instance has been disposed and can no longer be used for operations that require a connection.

I call the function using this code:

Language x;
                    x = RepLanguage.Get(_langID);
                    x.Name = txt_Name.Text;
                    x.Lang = txt_Lang.Text;
                    x.IsActive = bool.Parse(ddl_IsActive.SelectedValue);
                    x.CreationDate = lbl_CreationDate.Text;
                    x.LastModifiedDate = DateTime.Now.ToShortDateString() + "";
                    RepLanguage.Update(x);
                }

Posted 8-Mar-16 3:09am

ENG.Samy Sammour

Updated 8-Mar-16 3:45am

v2

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Comments

Sascha Lefèvre 8-Mar-16 9:26am

Did you observe at which line the exception occured?

ENG.Samy Sammour 8-Mar-16 9:31am

it is in the line where I copy the new object to the object from the database

ENG.Samy Sammour 8-Mar-16 9:35am

please check the edit in the post

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ENG.Samy Sammour · Accepted Answer · 2016-03-08T03:45:00

Finally, I found the Solution.

it was in the way I call the function:

C#

Language x;
                    // ============== x = RepLanguage.Get(_langID);
    x = new Language();
    x.LanguageID = int.Parse(txt_LanguageID.Text);
    x.Name = txt_Name.Text;
    x.Lang = txt_Lang.Text;
    x.IsActive = bool.Parse(ddl_IsActive.SelectedValue);
    x.CreationDate = lbl_CreationDate.Text;
    x.LastModifiedDate = DateTime.Now.ToShortDateString() + &quot;&quot;;
    RepLanguage.Update(x);
}</pre>