***I connect with Visual studio 2019 .NET core application with Mysql workbench.I create a DB in Mysql and add a user.then I add all information in connectionstring.All the visual studio codes are correctly running. This is the Error After Executing 'update-database –verbose' command:
fail: Microsoft.EntityFrameworkCore.Database.Command[20102]
Failed executing DbCommand (2ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
SELECT `MigrationId`, `ProductVersion`
FROM `__EFMigrationsHistory`
ORDER BY `MigrationId`;
Failed executing DbCommand (2ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
SELECT `MigrationId`, `ProductVersion`
FROM `__EFMigrationsHistory`
ORDER BY `MigrationId`;
MySql.Data.MySqlClient.MySqlException (0x80004005): Table 'hospital_db.__efmigrationshistory' doesn't exist
at MySql.Data.MySqlClient.MySqlStream.ReadPacket()
at MySql.Data.MySqlClient.NativeDriver.GetResult(Int32& affectedRow, Int64& insertedId)
at MySql.Data.MySqlClient.Driver.GetResult(Int32 statementId, Int32& affectedRows, Int64& insertedId)
at MySql.Data.MySqlClient.Driver.NextResult(Int32 statementId, Boolean force)
at MySql.Data.MySqlClient.MySqlDataReader.NextResult()
at MySql.Data.MySqlClient.MySqlCommand.ExecuteReader(CommandBehavior behavior)
at MySql.Data.MySqlClient.MySqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
at System.Data.Common.DbCommand.ExecuteReader()
at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReader(RelationalCommandParameterObject parameterObject)
at Microsoft.EntityFrameworkCore.Migrations.HistoryRepository.GetAppliedMigrations()
at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.Migrate(String targetMigration)
at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.UpdateDatabase(String targetMigration, String contextType)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabaseImpl(String targetMigration, String contextType)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabase.<>c__DisplayClass0_0.<.ctor>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
Table 'hospital_db.__efmigrationshistory' doesn't exist
PM> c
This is my appsettings.json:
{
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft": "Warning",
"Microsoft.Hosting.Lifetime": "Information"
}
},
"AllowedHosts": "*",
"ConnectionStrings": {
"DefaultConnection": "server=localhost;port=3307;database=hospital_db;uid=hospital_db_admin;password=testxxx"
}
}
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