Not having a great time.
PM> command run
Scaffold-DbContext "Server=myserver;Database=mysqlserverdb;Trusted_Connection=True;" Microsoft.EntityFrameworkCore.SqlServer -Tables Settings -verbose
Error:
The method or operation is not implemented.
System.NotImplementedException: The method or operation is not implemented.
at Microsoft.EntityFrameworkCore.Scaffolding.ProviderCodeGenerator.GenerateUseProvider(String connectionString)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpDbContextGenerator.GenerateOnConfiguring(String connectionString, Boolean suppressConnectionStringWarning)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpDbContextGenerator.GenerateClass(IModel model, String contextName, String connectionString, Boolean useDataAnnotations, Boolean suppressConnectionStringWarning)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpDbContextGenerator.WriteCode(IModel model, String namespace, String contextName, String connectionString, Boolean useDataAnnotations, Boolean suppressConnectionStringWarning)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpModelGenerator.GenerateModel(IModel model, String namespace, String contextDir, String contextName, String connectionString, ModelCodeGenerationOptions options)
at Microsoft.EntityFrameworkCore.Design.Internal.DatabaseOperations.ScaffoldContext(String provider, String connectionString, String outputDir, String outputContextDir, String dbContextClassName, IEnumerable1 schemas, IEnumerable1 tables, Boolean useDataAnnotations, Boolean overwriteFiles, Boolean useDatabaseNames)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScaffoldContextImpl(String provider, String connectionString, String outputDir, String outputDbContextDir, String dbContextClassName, IEnumerable1 schemaFilters, IEnumerable1 tableFilters, Boolean useDataAnnotations, Boolean overwriteFiles, Boolean useDatabaseNames)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScaffoldContext.<>c__DisplayClass0_1.<.ctor>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_01.b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)`
Between installing the EF power Tools and the Latest Core 2.2.x.x SDK I am now able to change my project to use dropdown change to the .net core 2.2 (it was previously only able to do 2.1.
Then with Nuget updates etc.. , it finally works!
Related
Is there any way of displaying more useful information instead of getting the following?
I currently use add-migration test1 -context mycontext
Update: added the -verbose option with no real new valuable information
System.ArgumentNullException: Value cannot be null. (Parameter 'key')
at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.EntityReferenceMap.TryGet(Object entity, IEntityType entityType, InternalEntityEntry& entry, Boolean throwOnNonUniqueness)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.TryGetEntry(Object entity, IEntityType entityType, Boolean throwOnTypeMismatch)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.NavigationFixer.KeyPropertyChanged(InternalEntityEntry entry, IProperty property, IReadOnlyList`1 containingPrincipalKeys, IReadOnlyList`1 containingForeignKeys, Object oldValue, Object newValue)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntryNotifier.KeyPropertyChanged(InternalEntityEntry entry, IProperty property, IReadOnlyList`1 keys, IReadOnlyList`1 foreignKeys, Object oldValue, Object newValue)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.ChangeDetector.DetectKeyChange(InternalEntityEntry entry, IProperty property)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.ChangeDetector.PropertyChanged(InternalEntityEntry entry, IPropertyBase propertyBase, Boolean setModified)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntryNotifier.PropertyChanged(InternalEntityEntry entry, IPropertyBase property, Boolean setModified)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry.SetProperty(IPropertyBase propertyBase, Object value, Boolean isMaterialization, Boolean setModified, Boolean isCascadeDelete, CurrentValueType valueType)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry.SetProperty(IPropertyBase propertyBase, Object value, Boolean isMaterialization, Boolean setModified, Boolean isCascadeDelete)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.CascadeDelete(InternalEntityEntry entry, Boolean force, IEnumerable`1 foreignKeys)
at Microsoft.EntityFrameworkCore.Update.Internal.UpdateAdapter.CascadeDelete(IUpdateEntry entry, IEnumerable`1 foreignKeys)
at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.GetDataOperations(DiffContext diffContext)+MoveNext()
at System.Linq.Enumerable.ConcatIterator`1.MoveNext()
at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.Sort(IEnumerable`1 operations, DiffContext diffContext)
at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.GetDifferences(IModel source, IModel target)
at Microsoft.EntityFrameworkCore.Migrations.Design.MigrationsScaffolder.ScaffoldMigration(String migrationName, String rootNamespace, String subNamespace, String language)
at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.AddMigration(String name, String outputDir, String contextType)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigrationImpl(String name, String outputDir, String contextType)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigration.<>c__DisplayClass0_0.<.ctor>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_0`1.<Execute>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
Value cannot be null. (Parameter 'key')
When I try to scaffold existing MySQL DB using:
Scaffold-DbContext "server=server;user=user;password=pw;database=db" "Pomelo.EntityFrameworkCore.MySql" -OutputDir EF -f
I get the following error:
System.InvalidOperationException: The annotation 'MySql:IndexPrefixLength' cannot be added because an annotation with the same name already exists**.
at Microsoft.EntityFrameworkCore.Infrastructure.Annotatable.AddAnnotation(String name, Annotation annotation)
at Microsoft.EntityFrameworkCore.Infrastructure.Annotatable.AddAnnotation(String name, Object value)
at Microsoft.EntityFrameworkCore.Infrastructure.Annotatable.Microsoft.EntityFrameworkCore.Metadata.IMutableAnnotatable.AddAnnotation(String name, Object value)
at Microsoft.EntityFrameworkCore.MutableAnnotatableExtensions.AddAnnotations(IMutableAnnotatable annotatable, IEnumerable`1 annotations)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.RelationalScaffoldingModelFactory.VisitIndex(EntityTypeBuilder builder, DatabaseIndex index)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.RelationalScaffoldingModelFactory.VisitIndexes(EntityTypeBuilder builder, ICollection`1 indexes)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.RelationalScaffoldingModelFactory.VisitTable(ModelBuilder modelBuilder, DatabaseTable table)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.RelationalScaffoldingModelFactory.VisitTables(ModelBuilder modelBuilder, ICollection`1 tables)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.RelationalScaffoldingModelFactory.VisitDatabaseModel(ModelBuilder modelBuilder, DatabaseModel databaseModel)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.RelationalScaffoldingModelFactory.Create(DatabaseModel databaseModel, Boolean useDatabaseNames)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.ReverseEngineerScaffolder.ScaffoldModel(String connectionString, DatabaseModelFactoryOptions databaseOptions, ModelReverseEngineerOptions modelOptions, ModelCodeGenerationOptions codeOptions)
at Microsoft.EntityFrameworkCore.Design.Internal.DatabaseOperations.ScaffoldContext(String provider, String connectionString, String outputDir, String outputContextDir, String dbContextClassName, IEnumerable`1 schemas, IEnumerable`1 tables, Boolean useDataAnnotations, Boolean overwriteFiles, Boolean useDatabaseNames)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScaffoldContextImpl(String provider, String connectionString, String outputDir, String outputDbContextDir, String dbContextClassName, IEnumerable`1 schemaFilters, IEnumerable`1 tableFilters, Boolean useDataAnnotations, Boolean overwriteFiles, Boolean useDatabaseNames)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScaffoldContext.<>c__DisplayClass0_0.<.ctor>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_0`1.<Execute>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
The annotation 'MySql:IndexPrefixLength' cannot be added because an annotation with the same name already exists.*
I have succeded with the scaffolding for the same DB in the same project using the Microsoft packages without any problems.
The issue has been confirmed to be a bug by Pomelo team.
This exception will happen if there are more than one index on one column and both of them uses index prefix. A fix will be released soon:
https://github.com/PomeloFoundation/Pomelo.EntityFrameworkCore.MySql/issues/1189
I am writing an ASP.NET Core 3.1 class library to Scaffold-DbContext to reverse engineering the tables into models.
It is throwing an error
Format of the initialization string does not conform to specification starting at index 0
if I use the connection string directly instead of -Connection it work without problem, but trying to understand what is that I am not doing correctly?
{
"DetailedErrors": true,
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft": "Warning",
"Microsoft.Hosting.Lifetime": "Information"
}
},
"ConnectionStrings": {
"DatabaseConsString": "Server=tcp:mysqlserver.database.windows.net,1433;Initial Catalog=mysqldb;Persist Security Info=False;User ID=XXXXX;Password=XXXXXX;MultipleActiveResultSets=False;Encrypt=True;TrustServerCertificate=False;Connection Timeout=30;"
}
}
The above is my appsetting.json file, and this is the command I use:
PM> Scaffold-DbContext -Connection Name=DatabaseConsString
Microsoft.EntityFrameworkCore.SqlServer -OutputDir DbModels
-Context myDbContext -UseDatabaseNames -Force
-Tables [dbo].[UserInfo],[dbo].[Transactions]
Build started...
Build succeeded.
System.ArgumentException: Format of the initialization string does not conform to specification starting at index 0.
at Microsoft.Data.Common.DbConnectionOptions.GetKeyValuePair(String connectionString, Int32 currentPosition, StringBuilder buffer, Boolean useOdbcRules, String& keyname, String& keyvalue)
at Microsoft.Data.Common.DbConnectionOptions.ParseInternal(Dictionary2 parsetable, String connectionString, Boolean buildChain, Dictionary2 synonyms, Boolean firstKey)
at Microsoft.Data.Common.DbConnectionOptions..ctor(String connectionString, Dictionary2 synonyms)
at Microsoft.Data.SqlClient.SqlConnectionString..ctor(String connectionString)
at Microsoft.Data.SqlClient.SqlConnectionFactory.CreateConnectionOptions(String connectionString, DbConnectionOptions previous)
at Microsoft.Data.ProviderBase.DbConnectionFactory.GetConnectionPoolGroup(DbConnectionPoolKey key, DbConnectionPoolGroupOptions poolOptions, DbConnectionOptions& userConnectionOptions)
at Microsoft.Data.SqlClient.SqlConnection.ConnectionString_Set(DbConnectionPoolKey key)
at Microsoft.Data.SqlClient.SqlConnection.set_ConnectionString(String value)
at Microsoft.Data.SqlClient.SqlConnection..ctor(String connectionString)
at Microsoft.EntityFrameworkCore.SqlServer.Scaffolding.Internal.SqlServerDatabaseModelFactory.Create(String connectionString, DatabaseModelFactoryOptions options)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.ReverseEngineerScaffolder.ScaffoldModel(String connectionString, DatabaseModelFactoryOptions databaseOptions, ModelReverseEngineerOptions modelOptions, ModelCodeGenerationOptions codeOptions)
at Microsoft.EntityFrameworkCore.Design.Internal.DatabaseOperations.ScaffoldContext(String provider, String connectionString, String outputDir, String outputContextDir, String dbContextClassName, IEnumerable1 schemas, IEnumerable1 tables, Boolean useDataAnnotations, Boolean overwriteFiles, Boolean useDatabaseNames)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScaffoldContextImpl(String provider, String connectionString, String outputDir, String outputDbContextDir, String dbContextClassName, IEnumerable1 schemaFilters, IEnumerable1 tableFilters, Boolean useDataAnnotations, Boolean overwriteFiles, Boolean useDatabaseNames)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScaffoldContext.<>c__DisplayClass0_0.<.ctor>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_01.b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
Format of the initialization string does not conform to specification starting at index 0.
When I run command Scaffold-DbContext "Server=localhost;Database=MyDatabase;Integrated Security=true" Microsoft.EntityFrameworkCore.SqlServer
I get an error:
System.ArgumentNullException: Value cannot be null.
Parameter name: proposedIdentifier
at Microsoft.EntityFrameworkCore.Utilities.Check.NotEmpty(String value, String parameterName)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpUtilities.Uniquifier(String proposedIdentifier, ICollection`1 existingIdentifiers)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpUtilities.GenerateCSharpIdentifier(String identifier, ICollection`1 existingIdentifiers, Func`2 singularizePluralizer, Func`3 uniquifier)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpUtilities.GenerateCSharpIdentifier(String identifier, ICollection`1 existingIdentifiers, Func`2 singularizePluralizer)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpNamer`1.GetName(T item)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpUniqueNamer`1.GetName(T item)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.RelationalScaffoldingModelFactory.GetEntityTypeName(DatabaseTable table)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.RelationalScaffoldingModelFactory.VisitTable(ModelBuilder modelBuilder, DatabaseTable table)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.RelationalScaffoldingModelFactory.VisitTables(ModelBuilder modelBuilder, ICollection`1 tables)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.RelationalScaffoldingModelFactory.VisitDatabaseModel(ModelBuilder modelBuilder, DatabaseModel databaseModel)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.RelationalScaffoldingModelFactory.CreateFromDatabaseModel(DatabaseModel databaseModel, Boolean useDatabaseNames)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.RelationalScaffoldingModelFactory.Create(String connectionString, IEnumerable`1 tables, IEnumerable`1 schemas, Boolean useDatabaseNames)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.ModelScaffolder.Generate(String connectionString, IEnumerable`1 tables, IEnumerable`1 schemas, String projectPath, String outputPath, String rootNamespace, String contextName, Boolean useDataAnnotations, Boolean overwriteFiles, Boolean useDatabaseNames)
at Microsoft.EntityFrameworkCore.Design.Internal.DatabaseOperations.ScaffoldContext(String provider, String connectionString, String outputDir, String dbContextClassName, IEnumerable`1 schemas, IEnumerable`1 tables, Boolean useDataAnnotations, Boolean overwriteFiles, Boolean useDatabaseNames)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScaffoldContextImpl(String provider, String connectionString, String outputDir, String dbContextClassName, IEnumerable`1 schemaFilters, IEnumerable`1 tableFilters, Boolean useDataAnnotations, Boolean overwriteFiles, Boolean useDatabaseNames)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScaffoldContext.<>c__DisplayClass0_1.<.ctor>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_0`1.<Execute>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
Value cannot be null.
Parameter name: proposedIdentifier.
In my startup project I have:
public class CustomPluralizerDesignTimeServices : IDesignTimeServices
{
public void ConfigureDesignTimeServices(IServiceCollection services)
{
services.AddSingleton<IPluralizer, HumanizerToIPluralizerAdapter>();
}
}
public class HumanizerToIPluralizerAdapter : IPluralizer
{
public string Pluralize(string name) => name.Pluralize();
public string Singularize(string name) => name.Singularize();
}
when I remove this code, the scaffolding works.
Dependencies:
DataAccess Project (.NET Standard 2.0)
Microsoft.EntityFrameworkCore.SqlServer 2.0
Microsoft.EntityFrameworkCore.Tools
Microsoft.VisualStudio.Web.CodeGeneration.Design
Startup Project (.NET CORE 2.0)
Microsoft.AspNetCore.All
Looks like a bug in your IPluralizer implementation. Ensure it's not returning null or an empty string for some values.
I've got an entity framework class with two a reference back to another object
public class Review
{
[Key]
public int Id
{get;set;}
public int? FeatureId {get;set;}
public Feature Feature {get;set;}
}
public class Feature
{
[Key]
public int Id
{get;set;}
public ICollection<Review> Reviews {get;set;}
}
This works fine when I generate a migration using Add-Migration
Now, I added a second entry
public class Review
{
[Key]
public int Id
{get;set;}
public int? FeatureId {get;set;}
public Feature Feature {get;set;}
public int? CompareToFeatureId {get;set;}
public Feature CompareToFeature {get;set;}
}
When I run the migration, it does some weird stuff, like renaming the original column.
RenameColumn(table: "dbo.Reviews", name: "FeatureId", newName: "Feature_Id");
AddColumn("dbo.Reviews", "CompareToFeatureId", c => c.Int());
AddForeignKey("dbo.Reviews", "FeatureId", "dbo.Features", "Id");
AddForeignKey("dbo.Reviews", "CompareToFeatureId", "dbo.Features", "Id");
CreateIndex("dbo.Reviews", "FeatureId");
CreateIndex("dbo.Reviews", "CompareToFeatureId");
That would be fine, but the migration fails when i run update-database
Applying code-based migrations: [201211092218271_Test2].
Applying code-based migration: 201211092218271_Test2.
System.Data.SqlClient.SqlException (0x80131904): Foreign key 'FK_dbo.Reviews_dbo.Features_FeatureId' references invalid column 'FeatureId' in referencing table 'Reviews'.
Could not create constraint. See previous errors.
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async, Int32 timeout)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
at System.Data.Entity.Migrations.DbMigrator.ExecuteSql(DbTransaction transaction, MigrationStatement migrationStatement)
at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.ExecuteSql(DbTransaction transaction, MigrationStatement migrationStatement)
at System.Data.Entity.Migrations.DbMigrator.ExecuteStatements(IEnumerable`1 migrationStatements)
at System.Data.Entity.Migrations.Infrastructure.MigratorBase.ExecuteStatements(IEnumerable`1 migrationStatements)
at System.Data.Entity.Migrations.DbMigrator.ExecuteOperations(String migrationId, XDocument targetModel, IEnumerable`1 operations, Boolean downgrading, Boolean auto)
at System.Data.Entity.Migrations.DbMigrator.ApplyMigration(DbMigration migration, DbMigration lastMigration)
at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.ApplyMigration(DbMigration migration, DbMigration lastMigration)
at System.Data.Entity.Migrations.DbMigrator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId)
at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId)
at System.Data.Entity.Migrations.DbMigrator.Update(String targetMigration)
at System.Data.Entity.Migrations.Infrastructure.MigratorBase.Update(String targetMigration)
at System.Data.Entity.Migrations.Design.ToolingFacade.UpdateRunner.RunCore()
at System.Data.Entity.Migrations.Design.ToolingFacade.BaseRunner.Run()
ClientConnectionId:f1573dba-4658-462f-969a-9afbf1e4374a
Foreign key 'FK_dbo.Reviews_dbo.Features_FeatureId' references invalid column 'FeatureId' in referencing table 'Reviews'.
Could not create constraint. See previous errors.
Not sure what to do here. Any suggestions?
since you are not following the convention (Feature_ID) you need to help it a bit: on the FeatureId property put an attribute [ForeignKey("Feature")]
[ForeignKey("Feature")]
public int? FeatureId { get; set; }
public Feature Feature { get; set; }