我有一种方法可以在我们的应用程序中更新用户声明。
我以管理员用户身份登录，可以编辑其他用户。
我正在尝试删除一位用户的现有声明并分配新的声明。
使用 UserManger 删除声明时我收到 ConcurrencyFailure其结果。 (有时它可以工作，但大多数时候它会返回失败错误。)
Code: "ConcurrencyFailure"
Description: "Optimistic concurrency failure, object has been modified."
方法:
public async Task<bool> AssignClaimsToUser(string id, List<string> newClaims)
{
bool success = false;
ApplicationUser user = await _userManager.FindByIdAsync(id);
List<Claim> userClaims = new List<Claim>();
// Remove existing claims
IList<Claim> existingClaims = await _userManager.GetClaimsAsync(user);
var removal = await _userManager.RemoveClaimsAsync(user, existingClaims); // This fail
if (removal.Succeeded)
{
success = true;
// Add new claims
foreach (string policy in newClaims)
{
userClaims.Add(new Claim(policy, string.Empty, ClaimValueTypes.String));
}
await _userManager.AddClaimsAsync(user, userClaims);
}
return success;
}
为什么会发生这种情况以及如何解决此问题？
我只有在删除声明时才会遇到这个问题。我在
IdentityUser 上调用其他方法时没有它.编辑
调试输出:
Microsoft.AspNetCore.Hosting.Internal.WebHost:Information: Request starting HTTP/1.1 POST http://localhost:47691/Users/ManageUsers_Update application/x-www-form-urlencoded; charset=UTF-8 246 Microsoft.AspNetCore.Authentication.Cookies.CookieAuthenticationMiddleware:Information: HttpContext.User merged via AutomaticAuthentication from authenticationScheme: Identity.Application. Microsoft.AspNetCore.Authorization.DefaultAuthorizationService:Information: Authorization was successful for user: user@mydomain.com. Microsoft.AspNetCore.Authorization.DefaultAuthorizationService:Information: Authorization was successful for user: user@mydomain.com. Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker:Information: Executing action method MyProject.Controllers.UsersController.ManageUsers_Update (MyProject) with arguments (Kendo.Mvc.UI.DataSourceRequest, MyProject.Views.ViewModels.ManageUsersViewModel) - ModelState is Valid Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (5ms) [Parameters=[@__id_0='?' (Size = 450)], CommandType='Text', CommandTimeout='30'] SELECT TOP(1) [u].[Id], [u].[AccessFailedCount], [u].[ConcurrencyStamp], [u].[CustRef], [u].[Email], [u].[EmailConfirmed], [u].[IsEnabled], [u].[LockoutEnabled], [u].[LockoutEnd], [u].[NormalizedEmail], [u].[NormalizedUserName], [u].[PasswordHash], [u].[PhoneNumber], [u].[PhoneNumberConfirmed], [u].[SecurityStamp], [u].[TwoFactorEnabled], [u].[UserName] FROM [AspNetUsers] AS [u] WHERE [u].[Id] = @__id_0 Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (5ms) [Parameters=[@__custRef_0='?' (Size = 10)], CommandType='Text', CommandTimeout='30'] SELECT TOP(1) [c].[CustomerDetailsId], [c].[CustRef], [c].[CustomerDBConnectionString], [c].[Enabled], [c].[Name], [c].[UserLicenses] FROM [CustomerDetails] AS [c] WHERE [c].[CustRef] = @__custRef_0 Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (5ms) [Parameters=[@__custRef_0='?' (Size = 10)], CommandType='Text', CommandTimeout='30'] SELECT [x].[ID], [x].[AspNetUserId], [x].[CustRef], [x].[CustomerId], [x].[Email], [x].[FirstName], [x].[IsEnabled], [x].[IsMaster], [x].[ShowCosts], [x].[Surname] FROM [Users] AS [x] WHERE [x].[CustRef] = @__custRef_0 Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (5ms) [Parameters=[@__users_Id_0='?'], CommandType='Text', CommandTimeout='30'] SELECT TOP(1) [a].[ID], [a].[AspNetUserId], [a].[CustRef], [a].[CustomerId], [a].[Email], [a].[FirstName], [a].[IsEnabled], [a].[IsMaster], [a].[ShowCosts], [a].[Surname] FROM [Users] AS [a] WHERE [a].[ID] = @__users_Id_0 Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (5ms) [Parameters=[@__id_0='?' (Size = 450)], CommandType='Text', CommandTimeout='30'] SELECT TOP(1) [u].[Id], [u].[AccessFailedCount], [u].[ConcurrencyStamp], [u].[CustRef], [u].[Email], [u].[EmailConfirmed], [u].[IsEnabled], [u].[LockoutEnabled], [u].[LockoutEnd], [u].[NormalizedEmail], [u].[NormalizedUserName], [u].[PasswordHash], [u].[PhoneNumber], [u].[PhoneNumberConfirmed], [u].[SecurityStamp], [u].[TwoFactorEnabled], [u].[UserName] FROM [AspNetUsers] AS [u] WHERE [u].[Id] = @__id_0 Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (5ms) [Parameters=[@__normalizedUserName_0='?' (Size = 256)], CommandType='Text', CommandTimeout='30'] SELECT TOP(1) [u].[Id], [u].[AccessFailedCount], [u].[ConcurrencyStamp], [u].[CustRef], [u].[Email], [u].[EmailConfirmed], [u].[IsEnabled], [u].[LockoutEnabled], [u].[LockoutEnd], [u].[NormalizedEmail], [u].[NormalizedUserName], [u].[PasswordHash], [u].[PhoneNumber], [u].[PhoneNumberConfirmed], [u].[SecurityStamp], [u].[TwoFactorEnabled], [u].[UserName] FROM [AspNetUsers] AS [u] WHERE [u].[NormalizedUserName] = @__normalizedUserName_0 Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (6ms) [Parameters=[@p16='?' (Size = 450), @p0='?', @p1='?' (Size = 4000), @p17='?' (Size = 4000), @p2='?' (Size = 4000), @p3='?' (Size = 256), @p4='?', @p5='?', @p6='?', @p7='?', @p8='?' (Size = 256), @p9='?' (Size = 256), @p10='?' (Size = 4000), @p11='?' (Size = 4000), @p12='?', @p13='?' (Size = 4000), @p14='?', @p15='?' (Size = 256)], CommandType='Text', CommandTimeout='30'] SET NOCOUNT ON; UPDATE [AspNetUsers] SET [AccessFailedCount] = @p0, [ConcurrencyStamp] = @p1, [CustRef] = @p2, [Email] = @p3, [EmailConfirmed] = @p4, [IsEnabled] = @p5, [LockoutEnabled] = @p6, [LockoutEnd] = @p7, [NormalizedEmail] = @p8, [NormalizedUserName] = @p9, [PasswordHash] = @p10, [PhoneNumber] = @p11, [PhoneNumberConfirmed] = @p12, [SecurityStamp] = @p13, [TwoFactorEnabled] = @p14, [UserName] = @p15 WHERE [Id] = @p16 AND [ConcurrencyStamp] = @p17; SELECT @@ROWCOUNT; Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (5ms) [Parameters=[@__menuId_0='?'], CommandType='Text', CommandTimeout='30'] SELECT [u].[CustomerMenuId], [u].[MenuItemId] FROM [CustomerMenuItem] AS [u] WHERE [u].[CustomerMenuId] = @__menuId_0 Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (5ms) [Parameters=[], CommandType='Text', CommandTimeout='30'] SELECT [m].[Id], [m].[AspNetPolicyId], [m].[GlyphIcon], [m].[Label], [m].[MenuGroupId] FROM [MenuItem] AS [m] Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (5ms) [Parameters=[], CommandType='Text', CommandTimeout='30'] SELECT [a].[Id], [a].[DefaultAction], [a].[Description], [a].[Name] FROM [AspNetPolicy] AS [a] Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (5ms) [Parameters=[@__id_0='?' (Size = 450)], CommandType='Text', CommandTimeout='30'] SELECT TOP(1) [u].[Id], [u].[AccessFailedCount], [u].[ConcurrencyStamp], [u].[CustRef], [u].[Email], [u].[EmailConfirmed], [u].[IsEnabled], [u].[LockoutEnabled], [u].[LockoutEnd], [u].[NormalizedEmail], [u].[NormalizedUserName], [u].[PasswordHash], [u].[PhoneNumber], [u].[PhoneNumberConfirmed], [u].[SecurityStamp], [u].[TwoFactorEnabled], [u].[UserName] FROM [AspNetUsers] AS [u] WHERE [u].[Id] = @__id_0 Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (5ms) [Parameters=[@__user_Id_0='?' (Size = 450)], CommandType='Text', CommandTimeout='30'] SELECT [uc].[Id], [uc].[ClaimType], [uc].[ClaimValue], [uc].[UserId] FROM [AspNetUserClaims] AS [uc] WHERE [uc].[UserId] = @__user_Id_0 Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (9ms) [Parameters=[@__8__locals1_user_Id_0='?' (Size = 450), @__claim_Value_1='?' (Size = 4000), @__claim_Type_2='?' (Size = 4000)], CommandType='Text', CommandTimeout='30'] SELECT [uc].[Id], [uc].[ClaimType], [uc].[ClaimValue], [uc].[UserId] FROM [AspNetUserClaims] AS [uc] WHERE (([uc].[UserId] = @__8__locals1_user_Id_0) AND ([uc].[ClaimValue] = @__claim_Value_1)) AND ([uc].[ClaimType] = @__claim_Type_2) Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (6ms) [Parameters=[@__8__locals1_user_Id_0='?' (Size = 450), @__claim_Value_1='?' (Size = 4000), @__claim_Type_2='?' (Size = 4000)], CommandType='Text', CommandTimeout='30'] SELECT [uc].[Id], [uc].[ClaimType], [uc].[ClaimValue], [uc].[UserId] FROM [AspNetUserClaims] AS [uc] WHERE (([uc].[UserId] = @__8__locals1_user_Id_0) AND ([uc].[ClaimValue] = @__claim_Value_1)) AND ([uc].[ClaimType] = @__claim_Type_2) Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (93ms) [Parameters=[@__8__locals1_user_Id_0='?' (Size = 450), @__claim_Value_1='?' (Size = 4000), @__claim_Type_2='?' (Size = 4000)], CommandType='Text', CommandTimeout='30'] SELECT [uc].[Id], [uc].[ClaimType], [uc].[ClaimValue], [uc].[UserId] FROM [AspNetUserClaims] AS [uc] WHERE (([uc].[UserId] = @__8__locals1_user_Id_0) AND ([uc].[ClaimValue] = @__claim_Value_1)) AND ([uc].[ClaimType] = @__claim_Type_2) Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (5ms) [Parameters=[@__normalizedUserName_0='?' (Size = 256)], CommandType='Text', CommandTimeout='30'] SELECT TOP(1) [u].[Id], [u].[AccessFailedCount], [u].[ConcurrencyStamp], [u].[CustRef], [u].[Email], [u].[EmailConfirmed], [u].[IsEnabled], [u].[LockoutEnabled], [u].[LockoutEnd], [u].[NormalizedEmail], [u].[NormalizedUserName], [u].[PasswordHash], [u].[PhoneNumber], [u].[PhoneNumberConfirmed], [u].[SecurityStamp], [u].[TwoFactorEnabled], [u].[UserName] FROM [AspNetUsers] AS [u] WHERE [u].[NormalizedUserName] = @__normalizedUserName_0 Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (6ms) [Parameters=[@p0='?', @p1='?', @p2='?', @p19='?' (Size = 450), @p3='?', @p4='?' (Size = 4000), @p20='?' (Size = 4000), @p5='?' (Size = 4000), @p6='?' (Size = 256), @p7='?', @p8='?', @p9='?', @p10='?', @p11='?' (Size = 256), @p12='?' (Size = 256), @p13='?' (Size = 4000), @p14='?' (Size = 4000), @p15='?', @p16='?' (Size = 4000), @p17='?', @p18='?' (Size = 256)], CommandType='Text', CommandTimeout='30'] SET NOCOUNT ON; DELETE FROM [AspNetUserClaims] WHERE [Id] = @p0; SELECT @@ROWCOUNT; DELETE FROM [AspNetUserClaims] WHERE [Id] = @p1; SELECT @@ROWCOUNT; DELETE FROM [AspNetUserClaims] WHERE [Id] = @p2; SELECT @@ROWCOUNT; UPDATE [AspNetUsers] SET [AccessFailedCount] = @p3, [ConcurrencyStamp] = @p4, [CustRef] = @p5, [Email] = @p6, [EmailConfirmed] = @p7, [IsEnabled] = @p8, [LockoutEnabled] = @p9, [LockoutEnd] = @p10, [NormalizedEmail] = @p11, [NormalizedUserName] = @p12, [PasswordHash] = @p13, [PhoneNumber] = @p14, [PhoneNumberConfirmed] = @p15, [SecurityStamp] = @p16, [TwoFactorEnabled] = @p17, [UserName] = @p18 WHERE [Id] = @p19 AND [ConcurrencyStamp] = @p20; SELECT @@ROWCOUNT; 'dotnet.exe' (CoreCLR: clrhost): Loaded 'C:\Users\jsmith.nuget\packages\system.diagnostics.stacktrace\4.3.0\lib\netstandard1.3\System.Diagnostics.StackTrace.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled. Microsoft.EntityFrameworkCore.DbContext:Error: An exception occurred in the database while saving changes. Microsoft.EntityFrameworkCore.DbUpdateConcurrencyException: 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 Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.ThrowAggregateUpdateConcurrencyException(Int32 commandIndex, Int32 expectedRowsAffected, Int32 rowsAffected) at Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.d__6.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) 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.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) 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.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.d__47.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.d__45.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.EntityFrameworkCore.DbContext.d__30.MoveNext()
Microsoft.EntityFrameworkCore.DbUpdateConcurrencyException: 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 Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.ThrowAggregateUpdateConcurrencyException(Int32 commandIndex, Int32 expectedRowsAffected, Int32 rowsAffected) at Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.d__6.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) 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.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) 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.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.d__47.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.d__45.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.EntityFrameworkCore.DbContext.d__30.MoveNext() Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory:Information: Executed DbCommand (6ms) [Parameters=[@p0='?', @p1='?', @p2='?', @p19='?' (Size = 450), @p3='?', @p4='?' (Size = 4000), @p20='?' (Size = 4000), @p5='?' (Size = 4000), @p6='?' (Size = 256), @p7='?', @p8='?', @p9='?', @p10='?', @p11='?' (Size = 256), @p12='?' (Size = 256), @p13='?' (Size = 4000), @p14='?' (Size = 4000), @p15='?', @p16='?' (Size = 4000), @p17='?', @p18='?' (Size = 256)], CommandType='Text', CommandTimeout='30'] SET NOCOUNT ON; DELETE FROM [AspNetUserClaims] WHERE [Id] = @p0; SELECT @@ROWCOUNT; DELETE FROM [AspNetUserClaims] WHERE [Id] = @p1; SELECT @@ROWCOUNT; DELETE FROM [AspNetUserClaims] WHERE [Id] = @p2; SELECT @@ROWCOUNT; UPDATE [AspNetUsers] SET [AccessFailedCount] = @p3, [ConcurrencyStamp] = @p4, [CustRef] = @p5, [Email] = @p6, [EmailConfirmed] = @p7, [IsEnabled] = @p8, [LockoutEnabled] = @p9, [LockoutEnd] = @p10, [NormalizedEmail] = @p11, [NormalizedUserName] = @p12, [PasswordHash] = @p13, [PhoneNumber] = @p14, [PhoneNumberConfirmed] = @p15, [SecurityStamp] = @p16, [TwoFactorEnabled] = @p17, [UserName] = @p18 WHERE [Id] = @p19 AND [ConcurrencyStamp] = @p20; SELECT @@ROWCOUNT; Microsoft.EntityFrameworkCore.DbContext:Error: An exception occurred in the database while saving changes. Microsoft.EntityFrameworkCore.DbUpdateConcurrencyException: 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 Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.ThrowAggregateUpdateConcurrencyException(Int32 commandIndex, Int32 expectedRowsAffected, Int32 rowsAffected) at Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.ConsumeResultSetWithoutPropagation(Int32 commandIndex, DbDataReader reader) at Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.Consume(DbDataReader reader) at Microsoft.EntityFrameworkCore.Update.ReaderModificationCommandBatch.Execute(IRelationalConnection connection) at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.Execute(IEnumerable
1 commandBatches, IRelationalConnection connection) at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(IReadOnlyList1 entriesToSave) at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(Boolean acceptAllChangesOnSuccess) at Microsoft.EntityFrameworkCore.DbContext.SaveChanges(Boolean acceptAllChangesOnSuccess)Microsoft.EntityFrameworkCore.DbUpdateConcurrencyException: 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 Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.ThrowAggregateUpdateConcurrencyException(Int32 commandIndex, Int32 expectedRowsAffected, Int32 rowsAffected) at Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.ConsumeResultSetWithoutPropagation(Int32 commandIndex, DbDataReader reader) at Microsoft.EntityFrameworkCore.Update.AffectedCountModificationCommandBatch.Consume(DbDataReader reader) at Microsoft.EntityFrameworkCore.Update.ReaderModificationCommandBatch.Execute(IRelationalConnection connection) at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.Execute(IEnumerable
1 commandBatches, IRelationalConnection connection) at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(IReadOnlyList1 entriesToSave) at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(Boolean acceptAllChangesOnSuccess) at Microsoft.EntityFrameworkCore.DbContext.SaveChanges(Boolean acceptAllChangesOnSuccess) Exception thrown: 'Microsoft.EntityFrameworkCore.DbUpdateConcurrencyException' in Microsoft.EntityFrameworkCore.dll The thread 0x6264 has exited with code 0 (0x0). The thread 0xaa0 has exited with code 0 (0x0). The thread 0x6a84 has exited with code 0 (0x0).
管理用户_更新:
public async Task<ActionResult> ManageUsers_Update([DataSourceRequest] DataSourceRequest request, ManageUsersViewModel viewModel)
{
if (viewModel != null && ModelState.IsValid)
{
User objToUpdate = new User
{
Id = viewModel.ID,
FirstName = viewModel.FirstName,
Surname = viewModel.Surname
};
_userRepository.UpdateUser(objToUpdate);
if (viewModel.CustomerMenuId != null && viewModel.CustomerMenuId > 0)
{
int customerMenuId = Convert.ToInt32(viewModel.CustomerMenuId);
// Update user's claims
List<string> newClaims = _navigationRepository.GetPolicyNamesByCustomerMenuId(customerMenuId);
bool claimsUpdated = await _applicationUserService.AssignClaimsToUser(viewModel.AspNetUserId, newClaims);
// Assign user to menu if updating claims succeeded
if (claimsUpdated)
{
_navigationRepository.AssignCustomerMenuToUser(new CustomerMenuUser()
{CustomerMenuId = customerMenuId, AspNetUserId = viewModel.AspNetUserId});
}
}
ApplicationUser user = await _userManager.FindByIdAsync(viewModel.AspNetUserId);
user.IsEnabled = viewModel.IsEnabled;
await _userManager.UpdateAsync(user);
}
return Json(new[] { viewModel }.ToDataSourceResult(request, ModelState));
}
最佳答案
为什么会发生？
最可能的原因是并发冲突，这意味着多个用户(线程)尝试更改相同的数据。
在这里您可以找到有关它如何发生的更多详细信息
https://docs.microsoft.com/en-us/ef/core/saving/concurrency
怎么做才能解决这个问题？
我假设在您的情况下，多个用户不应该更新相同的声明，因此可能存在请求重复。
你可以试试:
另一种方法(通常在允许多次访问时)是实现重试策略以在乐观失败的情况下重新执行更新逻辑。
我很确定这不适合您的情况，但是如果您需要快速解决方案，这将起作用。
关于asp.net-core - 如何处理 IdentityUser 更新并发失败？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52553964/