我刚刚下载并安装微软企业库5.0 。我启动了VS 2010与EL 5玩，创造了一个非常简单的控制台应用程序。但是，它不会编译。我得到了以下错误：

I just downloaded and installed Microsoft Enterprise Library 5.0. I fired up VS 2010 to play with EL 5 and created a very simple console application. However, it would not compile. I got the following error:

的类型或命名空间名称数据不会在命名空间存在   Microsoft.P​​ractices.EnterpriseLibrary   （是否缺少程序集   参考？）的

The type or namespace name 'Data' does not exist in the namespace 'Microsoft.Practices.EnterpriseLibrary' (are you missing an assembly reference?)

我加的 Microsoft.P​​ractices.EnterpriseLibrary.Common，Microsoft.P​​ractices.EnterpriseLibrary.Data 和 Microsoft.P​​ractices.Unity 的 引用我的项目。

I added Microsoft.Practices.EnterpriseLibrary.Common, Microsoft.Practices.EnterpriseLibrary.Data, and Microsoft.Practices.Unity references to my project.

下面是简单的code表示拒绝编译。

Here's the simple code that refuses to compile.

using Microsoft.Practices.EnterpriseLibrary.Common.Configuration.Unity;
using Microsoft.Practices.EnterpriseLibrary.Data;
using Microsoft.Practices.Unity;

namespace EntLib
{
    class Program
    {
        static void Main(string[] args)
        {
            IUnityContainer container = new UnityContainer();
            container.AddNewExtension<EnterpriseLibraryCoreExtension>();
            var defaultDatabase = container.Resolve<Database>();
        }
    }
}

上述错误抱怨行＃2：

The error above complains about line #2 :

using Microsoft.Practices.EnterpriseLibrary.Data;

有人可能会指出，一个愚蠢的错误由我，不过目前我看不到它。

Someone probably will point out to a stupid mistake by me, but at the moment I fail to see it.

我试图删除并重新Microsoft.P​​ractices.EnterpriseLibrary.Data添加到refences，但它并没有帮助。

I tried to remove and add again Microsoft.Practices.EnterpriseLibrary.Data to refences but it didn't help.

推荐答案

我发现我在答案这个问题。我在我的项目变化的目标框架.NET Framework 4的从.NET框架的客户端配置文件。

I found my answer at this question. I changed target framework in my project to .NET Framework 4 from .NET Framework Client Profile.