请问VB里面的instancesOf语句在C#中对应是什么?

Question

代码如下,最后一句我不知道怎么转了Dim cComputerName
Const cWMINameSpace = "root/MicrosoftExchangeV2"
Const cWMIInstance = "Exchange_Mailbox"
cComputerName = "MyComputerNETBIOSName"Dim strWinMgmts
Dim objWMIExchange
Dim listExchange_Mailboxs
Dim objExchange_Mailbox strWinMgmts = "winmgmts:{impersonationLevel=impersonate}!//"& _
cComputerName&"/"&cWMINameSpace
Set objWMIExchange =  GetObject(strWinMgmts)
Set listExchange_Mailboxs = objWMIExchange.InstancesOf(cWMIInstance)

Answer 1

Get就行，逐条翻译可能不行吧。
System.Management.ConnectionOptions objconn = new 
System.Management.ConnectionOptions();
objconn.Impersonation = System.Management.ImpersonationLevel.Impersonate;
objconn.EnablePrivileges = true;
string cServername = "servername";
System.Management.ManagementScope exmangescope = new 
System.Management.ManagementScope(@"\\" + cServername + 
@"\root\MicrosoftExchangeV2",objconn);
System.Management.ObjectQuery objquery = new 
System.Management.ObjectQuery("SELECT * FROM Exchange_Mailbox");
System.Management.ManagementObjectSearcher objsearch = new 
System.Management.ManagementObjectSearcher(exmangescope,objquery);
System.Management.ManagementObjectCollection queryCollection1 = 
objsearch.Get();
string strDisplay;
foreach( System.Management.ManagementObject instmailbox in 
queryCollection1 )
{
strDisplay = instmailbox["MailboxDisplayName"].ToString() + " " + 
instmailbox["size"].ToString();
System.Console.WriteLine(strDisplay);
}

Answer 2

Set listExchange_Mailboxs = objWMIExchange.InstancesOf(cWMIInstance)是不是类型转换的啊?listExchange=cWMIInstance as objWMIExchange;如果是类型转换C# 里用 as 运算符, 如果转换不成功返回  null.不会出现异常