how to update single value form database

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My Code :

C#

var chk = (from c in FMS.Depositers where c.RecepitNo == DepositNo select c).FirstOrDefault();
if(chk!=null)
{
                       chk.DepositStatus = "PreClosed"
                       gt.ApplyCurrentValues(chk.EntityKey.EntitySetName, chk);

                       gt.SaveChanges();
}

showing error like this:
An object with a key that matches the key of the supplied object could not be found in the ObjectStateManager. Verify that the key values of the supplied object match the key values of the object to which changes must be applied.

Posted 8-Apr-14 21:25pm

Member 10735337

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Raul Iloc · Answer 1 · 2014-04-08T21:49:00

Solution 1

You should change your code like this:

C#

var chk = (from c in FMS.Depositers where c.RecepitNo == DepositNo select c).FirstOrDefault();
if(chk!=null)
{
 chk.DepositStatus = "PreClosed";
 FMS.SaveChanges();
}

Posted 8-Apr-14 21:49pm

Raul Iloc

v2