Question

当有人进行以下调用时，如何确保执行私有构造函数？

var rc = CrmSecureConfiguration.RestCRMClientConfiguration;

以下是实施：

public class CrmSecureConfiguration
{
    private CrmSecureConfiguration()
    {
        var configurationPackage = FabricRuntime.GetActivationContext().GetConfigurationPackageObject("Config");

        RestCRMClientConfiguration.CRMOrganizationName = configurationPackage.Settings.Sections["CRMWebService"].Parameters["CRMOrganizationName"].Value;
        RestCRMClientConfiguration.UserName = configurationPackage.Settings.Sections["CRMWebService"].Parameters["CRMWebServiceUserName"].Value;
        RestCRMClientConfiguration.Password = configurationPackage.Settings.Sections["CRMWebService"].Parameters["CRMWebServicePassword"].Value;
        RestCRMClientConfiguration.Domain = configurationPackage.Settings.Sections["CRMWebService"].Parameters["CRMWebServiceDomain"].Value;
        RestCRMClientConfiguration.CRMWebServiceBaseUrl = $"{configurationPackage.Settings.Sections["CRMWebService"].Parameters["CRMWebServiceBaseUrl"].Value}/{RestCRMClientConfiguration.CRMOrganizationName}/api/data/v8.1/";

    }
    public static RestCRMClientConfiguration RestCRMClientConfiguration { get; private set; }
}

由于某种原因，当前行为导致私有构造函数根本不执行。

Answer 1

如果不创建实例，则无法做到这一点。也许您想要一个静态构造函数？

static CrmSecureConfiguration()
{
    var configurationPackage = FabricRuntime.GetActivationContext().GetConfigurationPackageObject("Config");

    RestCRMClientConfiguration.CRMOrganizationName = configurationPackage.Settings.Sections["CRMWebService"].Parameters["CRMOrganizationName"].Value;
    RestCRMClientConfiguration.UserName = configurationPackage.Settings.Sections["CRMWebService"].Parameters["CRMWebServiceUserName"].Value;
    RestCRMClientConfiguration.Password = configurationPackage.Settings.Sections["CRMWebService"].Parameters["CRMWebServicePassword"].Value;
    RestCRMClientConfiguration.Domain = configurationPackage.Settings.Sections["CRMWebService"].Parameters["CRMWebServiceDomain"].Value;
    RestCRMClientConfiguration.CRMWebServiceBaseUrl = $"{configurationPackage.Settings.Sections["CRMWebService"].Parameters["CRMWebServiceBaseUrl"].Value}/{RestCRMClientConfiguration.CRMOrganizationName}/api/data/v8.1/";

}

Answer 2

单身人士模式：

public class CrmSecureConfiguration
{
   private static CrmSecureConfigurationinstance;

   private CrmSecureConfiguration() {
      var configurationPackage = FabricRuntime.GetActivationContext().GetConfigurationPackageObject("Config");

      RestCRMClientConfiguration.CRMOrganizationName = configurationPackage.Settings.Sections["CRMWebService"].Parameters["CRMOrganizationName"].Value;
      RestCRMClientConfiguration.UserName = configurationPackage.Settings.Sections["CRMWebService"].Parameters["CRMWebServiceUserName"].Value;
      RestCRMClientConfiguration.Password = configurationPackage.Settings.Sections["CRMWebService"].Parameters["CRMWebServicePassword"].Value;
      RestCRMClientConfiguration.Domain = configurationPackage.Settings.Sections["CRMWebService"].Parameters["CRMWebServiceDomain"].Value;
      RestCRMClientConfiguration.CRMWebServiceBaseUrl = $"{configurationPackage.Settings.Sections["CRMWebService"].Parameters["CRMWebServiceBaseUrl"].Value}/{RestCRMClientConfiguration.CRMOrganizationName}/api/data/v8.1/";
   }

   public static CrmSecureConfiguration Instance
   {
      get 
      {
         if (instance == null)
         {
            instance = new CrmSecureConfiguration();
         }
         return instance;
      }
   }

   public RestCRMClientConfiguration RestCRMClientConfiguration { get; private set; }
}

然后客户：

var rc = CrmSecureConfiguration.Instance.RestCRMClientConfiguration;

如何在访问静态成员之前确保私有构造函数加载？

2 个答案: