C# 调用 C 写的DLL
'int __stdcall GetBasicInfo(HANDLE icdev,unsigned long &CardSN);
Private Declare Function GetBasicInfo Lib "CMCC.dll" (ByVal icdev,ByRef CardSN&) As Long
上面是 VB 6.0 中调用 C DLL的代码
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那么 C# 遇到 &CardSN 该怎么写呢,请教,不胜感激