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I am having a hell of figuring the problem with code. I have .net project with Entity Framework as DAL. I am using MySQL Server 8.0. Everything is working fine except when I trying to seed data. I understand the error but I have tried everything to resolve it but to no avail. The error:

An error occurred while updating the entries. See the inner exception for details.

inner exception:

MySql.Data.MySqlClient.MySqlException: Cannot add or update a child row: a foreign key constraint fails ("dbs"."branches", CONSTRAINT "FK_Branches_CompanyProfiles_CompanyProfileId" FOREIGN KEY ("CompanyProfileId") REFERENCES "companyprofiles" ("Id") ON DELETE CASCADE ON UPDATE CA)

I have my domain model and seed data.

Domain model

public class CompanyProfile
        public CompanyProfile()
            Branches = new HashSet<Branch>();
        public int Id { get; set; }
        public string Name { get; set; }
        public string CompanyCity { get; set; }
        public string CompanyAddress { get; set; }
        public string CompanyAddressTwo { get; set; }
        public string ContactName { get; set; }
        public string ContactTitle { get; set; }

        public virtual ICollection<CompanyBranch> Branches { get; }


public class Branch
        public int Id { get; set; }
        public string BranchCity { get; set; }
        public string BranchName { get; set; }
        public virtual int CompanyProfileId { get; set; }
        public decimal BranchTarget { get; set; }

        public virtual CompanyProfile CompanyProfile { get; set; }

Fluent API for relationship:

class CompanyProfileConfigurations : EntityTypeConfiguration<CompanyProfile>
       public CompanyProfileConfigurations()
           HasMany(t => t.Branches)
           .WithRequired(x => x.CompanyProfile)
           .HasForeignKey(z => z.CompanyProfileId);


               c => c.Name,
               new CompanyProfile { Name = "New Company Profile" }

                b => b.BranchName,
                new Branch { BranchName = "Main Office", CompanyProfileId = 1, BranchCity = "", BranchTarget = 0m }

Your assistance is greatly appreciated

What I have tried:

I have tried google but didn't find solution
Updated 7-Nov-19 11:53am
St0rmi 7-Nov-19 7:30am
Any chance you can check/log the SQL that's being executed on the server?
noblepaulaziz 7-Nov-19 13:48pm
No, but the update-database commands works and its able to create the tables. It only throws up exception when the Package Manager tries to run the Seed command.

When I seed the tables one after the other, there is no exception; only happens when the seed data to the two table at the same time.
#realJSOP 8-Nov-19 10:00am
Well, the solution is simple - stop doing that.
Gerry Schmitz 7-Nov-19 12:52pm
It doesn't like your secondary index logic / data. Take stuff out till it works, then put it back in.
noblepaulaziz 7-Nov-19 13:49pm
Please what do mean?

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