c# - How to display values in list view -

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i have code 

 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());

i need display resourcepolicyavailsystemslvi.m_nullstring if data.resourcepolicy == null, if (data.resourcepolicy == null) , data.agentversion != null should display resourcepolicyavailsystemslvi.unknown how achieve this,

if mean?

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());

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