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我在C#visual studio项目中遇到以下错误:

命名空间"Microsoft"中不存在类型或命名空间名称"VisualStudio"(您是否缺少程序集引用？)

我也试图找到microsoft.dll文件,但无法获得任何参考.我在搜索错误的DLL吗？

using Microsoft.VisualStudio.TestTools.UnitTesting;  
using Kya.MsFx.Services.Swiper;

namespace Kya.MsFx.Devices.Swiper.Test
{
[TestClass]
public class SwiperWindowTest
{

    private SwiperWebServiceHost m_SwiperWS = null;
    /// <summary>
    ///     start web service on a separate thread, so tests 
    ///     can be executed withut blocking the application thread
    /// </summary>
    [ClassInitialize]
    public void SetupSwiperTests() {

        m_SwiperWS = SwiperWebServiceHost.StartService();

    }

    /// <summary>
    /// Stop service started during class initialize and kill the thread
    /// </summary>
    [ClassCleanup]
    public void CleanupSwiperTests() {
        m_SwiperWS.Stop();
    }


    /// <summary>
    ///   simulate init, …

我想使用mstest.exe在构建服务器上运行我的单元测试,但我不想在构建服务器上安装Visual Studio.我可以在没有Visual Studio的情况下安装MSTest吗？