VMWare SDK C＃VirtualMachine接口類型

Question

我有獲取虛擬機網絡連接並檢索連接的交換機信息的代碼。

我的代碼似乎適用於「VirtualEthernetCardNetworkBackingInfo」類型的接口，但是當服務器連接到VD交換機時會失敗，因爲在該方案中需要使用「VirtualEthernetCardDistributedVirtualPortBackingInfo」類型。

問題是，在嘗試轉換對象之前，如何檢測接口類型？或者應該只是試着去看看哪一個可以工作？

這是代碼我有，但我在尋找的東西清潔...

bool vswitch = false, vds = false; 

VirtualEthernetCard _workloadnic = (VirtualEthernetCard)_virtualdevice; 
//first check if the VM is connected to a vswitch 
try 
{ 
    VirtualEthernetCardNetworkBackingInfo _nic_backing = (VirtualEthernetCardNetworkBackingInfo)_workloadnic.Backing; 
    network_moid = _nic_backing.Network.Value; 
    vswitch = true; 
} 
catch (Exception ex) { } 

//if it was not a vswitch it should be a vds 
if (!vswitch) 
{ 
    try 
    { 
     VirtualEthernetCardDistributedVirtualPortBackingInfo _nic_backing = (VirtualEthernetCardDistributedVirtualPortBackingInfo)_workloadnic.Backing; 
     network_moid = _nic_backing.Port.SwitchUuid 
     vds = true; 
    } 
    catch (Exception ex) { } 
} 
if (!vswitch || !vds) 
{ 
    Logger.log(String.Format("UpdateVMwareWorkload: Could not determine workload network backing type"), Logger.Severity.Error); 
} 

Answer 1

它認爲這會工作得很好......

  if (_workloadnic.Backing is VirtualEthernetCardNetworkBackingInfo) 
      { 

      } 
      else if (_workloadnic.Backing is VirtualEthernetCardDistributedVirtualPortBackingInfo) 
      { 

      }