Question

我正在尝试在NuGet中生成新的迁移脚本。键入add-migration Initial后生成以下响应。注意：我的项目仍然编译并运行，没有错误......

    PM> add-migration Initial
System.ArgumentException: Format of the initialization string does not conform to specification starting at index 0.
   at System.Data.Common.DbConnectionOptions.GetKeyValuePair(String connectionString, Int32 currentPosition, StringBuilder buffer, Boolean useOdbcRules, String& keyname, String& keyvalue)
   at System.Data.Common.DbConnectionOptions.ParseInternal(Hashtable parsetable, String connectionString, Boolean buildChain, Hashtable synonyms, Boolean firstKey)
   at System.Data.Common.DbConnectionOptions..ctor(String connectionString, Hashtable synonyms, Boolean useOdbcRules)
   at System.Data.Common.DbConnectionStringBuilder.set_ConnectionString(String value)
   at MySql.Data.MySqlClient.MySqlConnectionStringBuilder..ctor(String connStr)
   at MySql.Data.MySqlClient.MySqlConnection.set_ConnectionString(String value)
   at MySql.Data.MySqlClient.MySqlConnection..ctor(String connectionString)
   at MySql.Data.Entity.MySqlConnectionFactory.CreateConnection(String connectionString)
   at System.Data.Entity.Internal.LazyInternalConnection.Initialize()
   at System.Data.Entity.Internal.LazyInternalConnection.get_Connection()
   at System.Data.Entity.Internal.LazyInternalContext.get_Connection()
   at System.Data.Entity.Infrastructure.DbContextInfo..ctor(Type contextType, DbProviderInfo modelProviderInfo, AppConfig config, DbConnectionInfo connectionInfo, Func`1 resolver)
   at System.Data.Entity.Migrations.DbMigrator..ctor(DbMigrationsConfiguration configuration, DbContext usersContext, DatabaseExistenceState existenceState, Boolean calledByCreateDatabase)
   at System.Data.Entity.Migrations.DbMigrator..ctor(DbMigrationsConfiguration configuration)
   at System.Data.Entity.Migrations.Design.MigrationScaffolder..ctor(DbMigrationsConfiguration migrationsConfiguration)
   at System.Data.Entity.Migrations.Design.ToolingFacade.ScaffoldRunner.Run()
   at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
   at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
   at System.Data.Entity.Migrations.Design.ToolingFacade.Run(BaseRunner runner)
   at System.Data.Entity.Migrations.Design.ToolingFacade.Scaffold(String migrationName, String language, String rootNamespace, Boolean ignoreChanges)
   at System.Data.Entity.Migrations.AddMigrationCommand.Execute(String name, Boolean force, Boolean ignoreChanges)
   at System.Data.Entity.Migrations.AddMigrationCommand.<>c__DisplayClass2.<.ctor>b__0()
   at System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command)
Format of the initialization string does not conform to specification starting at index 0.

我一直在关注此问题的指南，以便与我的Google Cloud SQL服务器建立联系： Dynamic MySQL database connection for Entity Framework 6

我的连接字符串：

    <add name="CCGamesGCloud.EntityFramework.Context" connectionString="Server=******;Database=*****;Uid=****;Pwd=*********"
  providerName="MySql.Data.MySqlClient" />

我的EF字符串：

<entityFramework>
    <defaultConnectionFactory type="MySql.Data.Entity.MySqlConnectionFactory, MySql.Data.Entity.EF6" />
    <providers>
      <provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6" />
    </providers>
  </entityFramework>

上下文类：

public class Context : DbContext
{
    public Context() : base("CCGamesGCloud.EntityFramework.Context")
    {

    }

    public virtual DbSet<Developer> Developers { get; set; }
    //... etc. etc... for all DBSets

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);

        modelBuilder.Entity<Developer>();
        // other calls... etc here
    }
}

Web.config XML第一行：

<?xml version="1.0" encoding="utf-8"?>

我已将必要的MySQL dll添加到解决方案参考中。我没有看到我的字符串中有任何拼写错误，就像关于这个主题的许多其他问题一样。

Answer 1

我正在使用的迁移设置已初始化为目标sql实例。抛出了不可接受的字符串格式错误，因为我使用的连接字符串是用于MySQL协议，而不是常规SQL。

我强制重新启用专门针对我的自定义上下文的迁移。这样做可以防止错误发生，因为迁移现在需要MySQL上下文和连接字符串。

我用过：

Enable-Migrations -ContextTypeName MYCONTEXT -Force

不符合初始化字符串，索引0

1 个答案: