如何在列表视图中显示值

Question

我有这样的代码

 if(Data.ResourcePolicy == null)
                SubItems.Add(ResourcePolicyAvailSystemsLVI.m_nullString);
             else
                SubItems.Add(Data.ResourcePolicy.Name);

             if (Data.AgentVersion == null || Data.AgentVersion.Equals("0.0.0.0"))
                SubItems.Add(ResourcePolicySystemsControl.m_nullVersion);
             else
                SubItems.Add(Data.AgentVersion);
             SubItems.Add(Data.AgentState.ToString());

我只需要在Data.ResourcePolicy == null，if（Data.ResourcePolicy == null）和Data.AgentVersion！= null时显示ResourcePolicyAvailSystemsLVI.m_nullString然后我应该显示ResourcePolicyAvailSystemsLVI.unknown 我将如何实现这一目标，

Answer 1

如果这是你的意思？

bool isNullVersion=(Data.AgentVersion ?? "0.0.0.0") == "0.0.0.0";
string policy= isNullVersion ? 
                           ResourcePolicyAvailSystemsLVI.m_nullString :
                           ResourcePolicyAvailSystemsLVI.unknown;
if (Data.ResourcePolicy !=null) policy=Data.ResourcePolicy.Name;
SubItems.Add(policy);
SubItems.Add(isNullVersion ? 
                            ResourcePolicySystemsControl.m_nullVersion :
                            Data.AgentVersion
            );
SubItems.Add(Data.AgentState.ToString());

Answer 2

数据类的范围：

public class DataClass
{
    //....

    public string ResourcePolicyName
    {
        get { return ResourcePolicy != null ? ResourcePolicy.Name : ResourcePolicyAvailSystemsLVI.m_nullString; }
    }

    public string AgentVersionString
    {
        get
        {
            if (AgentVersion == null || AgentVersion.Equals("0.0.0.0"))
            {
                return ResourcePolicySystemsControl.m_nullVersion;
            }
            return AgentVersion;
        }
    }
}