引用在'系統'中定義的「組件」聲明類型

Question

嘗試在UWP應用程序中獲取一些WMI對象。在.net 4.6上運行VS2015。

我收到ForEach錯誤和方法調用，聲明「引用類型'組件'聲明它是在'系統'中定義的，錯誤爲CS7069。

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Threading.Tasks; 
using System.Management; 

namespace SystemInfo 
{ 
    class wmiObject 
    { 
     static osDetails Program() 
     { 

      ManagementObjectCollection osDetailsCollection = getWMIObject("SELECT OSType, caption FROM Win32_OperatingSystem"); 
      osDetails Details = new osDetails(); 

      foreach (ManagementObject mo in osDetailsCollection) 
      { 
       Details.OSName = mo["Caption"].ToString(); 

      } 

      osDetailsCollection = getWMIObject("SELECT Description, NumberOfLogicalProcessors, L3CacheSize from Win32_Processor"); 

      foreach (ManagementObject mo in osDetailsCollection) 
      { 
       Details.NumberOfLogicalProcessors = mo["NumberOfLogicalProcessors"].ToString(); 
       Details.L3CacheSize = mo["L3CacheSize"].ToString(); 
       Details.Description = mo["Description"].ToString(); 

      } 
      ; 

      return Details; 
     } 

     static ManagementObjectCollection getWMIObject(string query) 
     { 
      ManagementObjectSearcher objOSDetails = new ManagementObjectSearcher(query); 
      ManagementObjectCollection osDetailsCollection = objOSDetails.Get(); 
      return osDetailsCollection; 

     } 

     class osDetails 
     { 
      public string Description; 
      public string OSName; 
      public string NumberOfLogicalProcessors; 
      public string L3CacheSize; 
     } 

    } 


} 

錯誤

Severity Code Description Project File Line 
Error CS7069 Reference to type 'Component' claims it is defined in 'System', but it could not be found SystemInfo C:\Users\Luke\Documents\GitHub\lgDns\lgDns\SystemInfo\SystemInfo\osDetails.cs 41 
Error CS7069 Reference to type 'Component' claims it is defined in 'System', but it could not be found SystemInfo C:\Users\Luke\Documents\GitHub\lgDns\lgDns\SystemInfo\SystemInfo\osDetails.cs 18 
Error CS7069 Reference to type 'Component' claims it is defined in 'System', but it could not be found SystemInfo C:\Users\Luke\Documents\GitHub\lgDns\lgDns\SystemInfo\SystemInfo\osDetails.cs 20 
Error CS7069 Reference to type 'Component' claims it is defined in 'System', but it could not be found SystemInfo C:\Users\Luke\Documents\GitHub\lgDns\lgDns\SystemInfo\SystemInfo\osDetails.cs 26 
Error CS7069 Reference to type 'Component' claims it is defined in 'System', but it could not be found SystemInfo C:\Users\Luke\Documents\GitHub\lgDns\lgDns\SystemInfo\SystemInfo\osDetails.cs 28 
Error CS7069 Reference to type 'Component' claims it is defined in 'System', but it could not be found SystemInfo C:\Users\Luke\Documents\GitHub\lgDns\lgDns\SystemInfo\SystemInfo\osDetails.cs 29 
Error CS7069 Reference to type 'Component' claims it is defined in 'System', but it could not be found SystemInfo C:\Users\Luke\Documents\GitHub\lgDns\lgDns\SystemInfo\SystemInfo\osDetails.cs 30 

任何幫助，將不勝感激。

Answer 1

這可能爲你工作

foreach (ManagementObject mo in osDetailsCollection) 
{ 
    foreach (PropertyData prop in mo.Properties) 
    { 
     if(prop.Name == "Caption") 
     Details.OSName = prop.Value; 
    } 
} 

Answer 2

我只是遇到了這個問題，我找到了解決辦法是改造項目作爲一個C＃WindowsFormsApp。它會自動添加參考文獻：

C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.2\Microsoft.CSharp.dll 
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.2\System.dll 
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.2\System.Core.dll 
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.2\System.Data.dll 
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.2\System.Data.DataSetExtensions.dll 
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.2\System.Deployment.dll 
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.2\System.Drawing.dll 
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.2\System.Net.Http.dll 
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.2\System.Windows.Forms.dll 
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.2\System.Xml.dll 
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.2\System.Xml.Linq.dll 

希望能幫助別人。