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Error Resolution For EF6 in C#

I am having C# project where i am using EF6 with MySQL, everything is working fine but at one place where i have one to one mapping i am getting below error, its just 30 min task so bid accordingly :-

An error occurred while saving entities that do not expose foreign key properties for their relationships. The EntityEntries property will return null because a single entity cannot be identified as the source of the exception. Handling of exceptions while saving can be made easier by exposing foreign key properties in your entity types. See the InnerException for details.

Store update, insert, or delete statement affected an unexpected number of rows (0). Entities may have been modified or deleted since entities were loaded. See [url removed, login to view] for information on understanding and handling optimistic concurrency exceptions.

Evner: .NET, C# Programmering, MySQL

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Om arbejdsgiveren:
( 1 bedømmelse ) Pune, India

Projekt ID: #15263292

6 freelancere byder i gennemsnit ₹1267 på dette job

₹1750 INR på 1 dag
(220 bedømmelser)
6.3
Nirmal0809

Hi, I have read your description and I think loading entity explicitly or changing configuration which allows null for relational entity will fix this error. But I still need to check code. Relevant Skills and Experie Flere

₹1050 INR på 1 dag
(2 bedømmelser)
5.5
sahumk2000

I have gone through the requirement, I am full time freelancer, I can do it. Relevant Skills and Experience I have more than 13 yrs exp as Architect, Tech Lead, Developer in C#,Asp.net, MVC, VB.Net, XML, SQL server, W Flere

₹1750 INR på 1 dag
(4 bedømmelser)
2.8
mirzamyahya

A proposal has not yet been provided

₹1150 INR på 1 dag
(0 bedømmelser)
0.0
₹1300 INR på 1 dag
(0 bedømmelser)
0.0
ravipatilproff

This is my first bid so please give me chance to prove myself. Relevant Skills and Experience 5+ years of experience in dot net [login to view URL] i am working on Advanced Data Source project technologies current Flere

₹600 INR på 1 dag
(0 bedømmelser)
0.0