Entity Framework Core SaveChanges 在 Mac 上導致錯誤

Question

我目前正在嘗試構建一個 EF 核心項目，但是當我調用 db.SaveChanges() 時，我收到以下錯誤：

System.TypeInitializationException: The type initializer for 'Microsoft.Data.SqlClient.InOutOfProcHelper' threw an exception. ---> System.EntryPointNotFoundException: GetModuleHandle assembly:<unknown assembly> type:<unknown type> member:(null)
  at (wrapper managed-to-native) Microsoft.Data.Common.SafeNativeMethods.GetModuleHandle(string)
  at Microsoft.Data.SqlClient.InOutOfProcHelper..ctor () [0x00006] in <a1c8e16fd44948ee8c6a463f125e71f0>:0 
  at Microsoft.Data.SqlClient.InOutOfProcHelper..cctor () [0x00000] in <a1c8e16fd44948ee8c6a463f125e71f0>:0 
   --- End of inner exception stack trace ---
  at Microsoft.Data.SqlClient.SqlConnectionString..ctor (System.String connectionString) [0x0000d] in <a1c8e16fd44948ee8c6a463f125e71f0>:0 
  at Microsoft.Data.SqlClient.SqlConnectionFactory.CreateConnectionOptions (System.String connectionString, Microsoft.Data.Common.DbConnectionOptions previous) [0x00000] in <a1c8e16fd44948ee8c6a463f125e71f0>:0 
  at Microsoft.Data.ProviderBase.DbConnectionFactory.GetConnectionPoolGroup (Microsoft.Data.Common.DbConnectionPoolKey key, Microsoft.Data.ProviderBase.DbConnectionPoolGroupOptions poolOptions, Microsoft.Data.Common.DbConnectionOptions& userConnectionOptions) [0x0003e] in <a1c8e16fd44948ee8c6a463f125e71f0>:0 
  at Microsoft.Data.SqlClient.SqlConnection.ConnectionString_Set (Microsoft.Data.Common.DbConnectionPoolKey key) [0x00008] in <a1c8e16fd44948ee8c6a463f125e71f0>:0 
  at Microsoft.Data.SqlClient.SqlConnection.set_ConnectionString (System.String value) [0x0006b] in <a1c8e16fd44948ee8c6a463f125e71f0>:0 
  at Microsoft.Data.SqlClient.SqlConnection..ctor (System.String connectionString, Microsoft.Data.SqlClient.SqlCredential credential) [0x00006] in <a1c8e16fd44948ee8c6a463f125e71f0>:0 
  at Microsoft.Data.SqlClient.SqlConnection..ctor (System.String connectionString) [0x00000] in <a1c8e16fd44948ee8c6a463f125e71f0>:0 
  at (wrapper remoting-invoke-with-check) Microsoft.Data.SqlClient.SqlConnection..ctor(string)
  at Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerConnection.CreateDbConnection () [0x00006] in <5c775909c1cf40629fd2452310cf8cc1>:0 
  at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.get_DbConnection () [0x0000a] in <5314a29febc14288a1bc53bf7b46d725>:0 
  at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.CreateCommand (Microsoft.EntityFrameworkCore.Storage.RelationalCommandParameterObject parameterObject, System.Guid commandId, Microsoft.EntityFrameworkCore.Diagnostics.DbCommandMethod commandMethod) [0x0005c] in <5314a29febc14288a1bc53bf7b46d725>:0 
  at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReader (Microsoft.EntityFrameworkCore.Storage.RelationalCommandParameterObject parameterObject) [0x00027] in <5314a29febc14288a1bc53bf7b46d725>:0 
  at Microsoft.EntityFrameworkCore.Query.Internal.QueryingEnumerable`1+Enumerator[T].InitializeReader (Microsoft.EntityFrameworkCore.DbContext _, System.Boolean result) [0x00050] in <5314a29febc14288a1bc53bf7b46d725>:0 
  at Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerExecutionStrategy.Execute[TState,TResult] (TState state, System.Func`3[T1,T2,TResult] operation, System.Func`3[T1,T2,TResult] verifySucceeded) [0x00011] in <5c775909c1cf40629fd2452310cf8cc1>:0 
  at Microsoft.EntityFrameworkCore.Query.Internal.QueryingEnumerable`1+Enumerator[T].MoveNext () [0x00193] in <5314a29febc14288a1bc53bf7b46d725>:0 
  at System.Linq.Enumerable.SingleOrDefault[TSource] (System.Collections.Generic.IEnumerable`1[T] source) [0x00041] in /Users/builder/jenkins/workspace/build-package-osx-mono/2019-10/external/bockbuild/builds/mono-x64/external/corefx/src/System.Linq/src/System/Linq/Single.cs:104 
  at (wrapper dynamic-method) System.Object.lambda_method(System.Runtime.CompilerServices.Closure,Microsoft.EntityFrameworkCore.Query.QueryContext)
  at Microsoft.EntityFrameworkCore.Query.Internal.QueryCompiler.Execute[TResult] (System.Linq.Expressions.Expression query) [0x00075] in <a3dbe48366454fdbb51dfeeb0b5c4997>:0 
  at Microsoft.EntityFrameworkCore.Query.Internal.EntityQueryProvider.Execute[TResult] (System.Linq.Expressions.Expression expression) [0x00000] in <a3dbe48366454fdbb51dfeeb0b5c4997>:0 
  at System.Linq.Queryable.FirstOrDefault[TSource] (System.Linq.IQueryable`1[T] source) [0x0000e] in /Users/builder/jenkins/workspace/build-package-osx-mono/2019-10/external/bockbuild/builds/mono-x64/external/corefx/src/System.Linq.Queryable/src/System/Linq/Queryable.cs:729 
  at GenericEFIAPI.RTATenantsDatabaseHelper.convertTenant (System.String tenantId, GenericEFIAPI.configObject config, GenericEFIAPI.models.TenantDatabase db) [0x002d2] in /Users/jft/projects/GenericAPI/GenericEFIAPI/RTATenantsDatabaseHelper.cs:108 
  at GenericEFIAPI.Program+<>c__DisplayClass1_0.<Main>b__0 (GenericEFIAPI.Program+Options o) [0x000c1] in /Users/jft/projects/GenericAPI/GenericEFIAPI/Program.cs:78 
  at CommandLine.ParserResultExtensions.WithParsed[T] (CommandLine.ParserResult`1[T] result, System.Action`1[T] action) [0x00011] in <68c69d6559fd42bc897efd2a474dfda9>:0 
  at GenericEFIAPI.Program.Main (System.String[] args) [0x00013] in /Users/jft/projects/GenericAPI/GenericEFIAPI/Program.cs:38 

我試過在谷歌上四處尋找幫助，但到目前為止都是空的……有人有什么想法嗎？ 我正在嘗試連接到 sql 服務器並使用 DbContextOptionsBuilder().UseSqlServer() 進行底層連接。

我目前正在讓我的舊 windows 筆記本電腦啟動並運行，看看是不是因為我在 Mac 上，但我想我會同時提出這個問題。

Answer 1

好吧。 所以我不是 100% 確定為什么我的連接字符串在直接傳遞給 DbContextOptionsBuilder()、UseSqlServer(connectionString) 時會失敗，但是如果我在此之前創建一個 SqlConnection object，並將其作為參數傳遞給 UseSqlServer。 有用。

所以有一個解決方法，但不確定為什么在傳遞連接字符串時會發生錯誤。