異常
Microsoft.Data.SqlClient is not supported on this platform.
堆棧跟蹤
at Microsoft.Data.SqlClient.SqlConnection..ctor(String connectionString)
at Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerConnection.CreateDbConnection()
at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.get_DbConnection()
at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.<OpenAsync>d__47.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.<BeginTransactionAsync>d__38.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.<BeginTransactionAsync>d__36.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.<ExecuteAsync>d__8.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.<ExecuteAsync>d__8.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.<SaveChangesAsync>d__97.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.<SaveChangesAsync>d__101.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerExecutionStrategy.<ExecuteAsync>d__7`2.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.EntityFrameworkCore.DbContext.<SaveChangesAsync>d__54.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at TM.Framework.Repository.EFCore.Repository`2.<InsertAsync>d__15.MoveNext() in F:\Personal\Project\Git\Repos\WM\TM.Framework.Repository\DbCore\EFCore\Repository.cs:line 51
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()
任務調度創建可收集ACL后，加載任務程序集運行時，執行EF時報異常，且明確指出Microsoft.Data.SqlClient程序集不支持該平台，經測試.Net Core 3.1的網站(aspnet core)和控制台程序，在運行時會自動選用runtime文件夾下的對應dll，即AssemblyLoadContext.Default中加載的分別為：
文件名稱：（asp.net core）
\bin\Release\netcoreapp3.1\runtimes\win\lib\netcoreapp2.1\Microsoft.Data.SqlClient.dll
文件大小：1227736 字節
文件版本：1.0.19269.1
修改時間：2019年9月26日 20:43:26
MD5 ：0FE582BD41A492D8D583E60AB559EC93
SHA1 ：A935CAE85E421960A617FDFAA57738E2A0ACEEF9
CRC32 ：A7500F80
文件名稱：(.net core console)
\bin\Debug\netcoreapp3.1\runtimes\win\lib\netcoreapp2.1\Microsoft.Data.SqlClient.dll
文件大小：1227736 字節
文件版本：1.0.19269.1
修改時間：2019年9月26日 20:43:26
MD5 ：0FE582BD41A492D8D583E60AB559EC93
SHA1 ：A935CAE85E421960A617FDFAA57738E2A0ACEEF9
CRC32 ：A7500F80
由於任務調度程序加載dll時是從運行目錄中尋找並不會查看runtime文件夾，因此導致當前目錄里的同名dll被加載，因此拋出開頭的異常。
文件名稱：(運行目錄)
\bin\Debug\netcoreapp3.1\Microsoft.Data.SqlClient.dll
文件大小：330712 字節(偏小)
文件版本：1.0.19269.1
修改時間：2019年9月26日 20:43:28
MD5 ：5715D2FA9EDF8C80D8B1209F9C7D3624
SHA1 ：993D17482A5ED75CC78E4E6302934DA0D24DAE0D
CRC32 ：FC165A30
總結：
復制\bin\Debug\netcoreapp3.1\runtimes\win\lib\netcoreapp2.1\Microsoft.Data.SqlClient.dll里的dll到任務程序的根目錄即可。