Database operation expected to affect 1 row(s) but actually affected 0 row(s)

Question

I'm trying to insert records in two tables, but getting the exception. Could you please help me to resolve the issue.

First I tried the below code.

await _testRepository.InsertAsync(test);
await _xyzRepository.InsertAsync(xyz);

Then I tried this code, But nothing is working for me.

try
{
   var test = new Test();

   using (var uow = _unitOfWorkManager.Begin(TransactionScopeOption.RequiresNew))
   {
      int? tenantId = _unitOfWorkManager.Current.GetTenantId();
      using (_unitOfWorkManager.Current.SetTenantId(tenantId))
      {
         await _testRepository.InsertAsync(test);

         var xyz = new XYZ();
         await _xyzRepository.InsertAsync(xyz);
         await _unitOfWorkManager.Current.SaveChangesAsync();
         await uow.CompleteAsync();
      }
   }
}
catch (Exception ex)
{
   throw new UserFriendlyException(ex.Message);
}

Exception

Message:

Database operation expected to affect 1 row(s) but actually affected 0 row(s). Data may have been modified or deleted since entities were loaded. See http://go.microsoft.com/fwlink/?LinkId=527962 for information on understanding and handling optimistic concurrency exceptions.

stack trace:

at Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.ThrowAggregateUpdateConcurrencyException(Int32 commandIndex, Int32 expectedRowsAffected, Int32 rowsAffected) at Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.d__4.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.d__2.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.EntityFrameworkCore.Update.ReaderModificationCommandBatch.d__32.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.d__10.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.EntityFrameworkCore.Storage.Internal.SqlServerExecutionStrategy.d__7`2.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.d__61.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.d__59.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.EntityFrameworkCore.DbContext.d__48.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Abp.EntityFrameworkCore.AbpDbContext.d__49.MoveNext() in D:\Github\aspnetboilerplate\src\Abp.EntityFrameworkCore\EntityFrameworkCore\AbpDbContext.cs:line 214

INFO 2018-04-11 13:59:53,439 [3 ] ore.Mvc.Internal.ControllerActionInvoker - Executing action method MyCompany.MyProject.AdditionalMasterData.Tests.TestsAppService.CreateOrEdit (MyCompany.MyProject.Application) with arguments ([CreateOrEditTestDto ]) - ModelState is Valid WARN 2018-04-11 14:01:48,396 [4 ] Mvc.ExceptionHandling.AbpExceptionFilter - Database operation expected to affect 1 row(s) but actually affected 0 row(s). Data may have been modified or deleted since entities were loaded. See http://go.microsoft.com/fwlink/?LinkId=527962 for information on understanding and handling optimistic concurrency exceptions. Abp.UI.UserFriendlyException: Database operation expected to affect 1 row(s) but actually affected 0 row(s). Data may have been modified or deleted since entities were loaded. See http://go.microsoft.com/fwlink/?LinkId=527962 for information on understanding and handling optimistic concurrency exceptions. at MyCompany.MyProject.AdditionalMasterData.Tests.TestsAppService.d__7.MoveNext() in C:\Repo\MyProjectVenues\aspnet-core\src\MyCompany.MyProject.Application\AdditionalMasterData\Tests\TestsAppService.cs:line 205 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at MyCompany.MyProject.AdditionalMasterData.Tests.TestsAppService.d__6.MoveNext() in C:\Repo\MyProjectVenues\aspnet-core\src\MyCompany.MyProject.Application\AdditionalMasterData\Tests\TestsAppService.cs:line 170 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.d__12.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.d__10.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ActionExecutedContext context) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.d__14.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.d__23.MoveNext()

Update

I have got the root cause of the issue.

So basically I have an insert trigger on Entity2 and When I have commented the query inside this trigger and then its working fine.

There are approximately 10 queries in this trigger and it's very hard to know which one is causing the problem. So could you please let me know how to debug this trigger?

Answer 1

Issue with my code was, i was setting primary key value for tables explicitly, it's not db generated, but efcore was not aware about this.. so finally i need to write (ValueGeneratedNever)

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);

            //TODO: on add any entity add here the same
            modelBuilder.Entity<AdminUser>().Property(e => e.AdminUserId).ValueGeneratedNever();
            modelBuilder.Entity<AdminUserLogInLog>().Property(e => e.AdminUserLogInLogId).ValueGeneratedNever();
            ...........
         }

Generic method for all table

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);
        
        foreach (var item in modelBuilder.Model.GetEntityTypes())
        {
            var p = item.FindPrimaryKey().Properties.FirstOrDefault(i=>i.ValueGenerated!=Microsoft.EntityFrameworkCore.Metadata.ValueGenerated.Never);
            if (p!=null)
            {
                p.ValueGenerated = Microsoft.EntityFrameworkCore.Metadata.ValueGenerated.Never;
            }

        }
    }

Answer 2

I find that this can be a binding issue on the primary key(s). Check your query string to make sure that all is binding correctly in your view and update action. (make sure a query string value is not overwriting an input value).