实体客户端未安装但实体工作正常

Question

调试setupConnections方法时出现以下错误

    public string SetupConnections(SourceDatabases database)
    {
        EntityConnectionStringBuilder efBuilder = new EntityConnectionStringBuilder();

        try
        { 

        string metaData = @"res://*/Model1.csdl|res://*/Model1.ssdl|res://*/Model1.msl";
        string initialcatalog = "";
        const string appName = "EntityFramework";
        const string providerName = "System.Data.EntityClient";
        if (database == SourceDatabases.COASTALCAROLINAPODIATRY)
        {
            initialcatalog = "COASTALCAROLINAPODIATRY";
        }
        if (database == SourceDatabases.COASTALVISIONCARE)
        {
            initialcatalog = "COASTALVISIONCARE";
        }
        if (database == SourceDatabases.ELEANORSAHN)
        {
            initialcatalog = "ELEANORSAHN";
        }

        if (database == SourceDatabases.GLAUCOMACONSULTANTS)
        {
            initialcatalog = "COASTALCAROLINAPODIATRY";
        }

        if (database == SourceDatabases.MARIANNEROSEN)
        {
            initialcatalog = "COASTALCAROLINAPODIATRY";
        }
        const string dataSource = "sourcenet";
        SqlConnectionStringBuilder sqlBuilder = new SqlConnectionStringBuilder();
        sqlBuilder.DataSource = dataSource;
        sqlBuilder.InitialCatalog = initialcatalog;
        sqlBuilder.MultipleActiveResultSets = true;
        sqlBuilder.IntegratedSecurity = false;
        sqlBuilder.UserID = "scheduler";
        sqlBuilder.Password = "BORG8472";
        sqlBuilder.ApplicationName = appName;


        efBuilder.Metadata = metaData;
        efBuilder.Provider = providerName;
        efBuilder.ProviderConnectionString = sqlBuilder.ConnectionString;
        }
        catch(Exception EX)
        {

        }
        return efBuilder.ConnectionString;
    }

它声称以下未安装，但我在使用ef时没有遇到任何问题我的项目是另一个我需要的nuget

  

具有不变名称'System.Data.EntityClient'的ADO.NET提供程序是   要么未在机器或应用程序配置文件中注册，要么   无法加载。有关详细信息，请参阅内部异常。

     

内部：无法找到请求的.Net Framework数据提供程序。它可能不会   安装。

我的提供商只需在我的app.config

中包含以下内容即可

 <providers>
  <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>

你可以从下面看到我已经安装了这是我的地狱，它只会在我使用下面的方法切换连接时抱怨吗？