C# Definitions:

// Use this when the unmanaged API expects the structure passed by-value,
// or if you want to pass it by-reference as a pointer to a structure
[StructLayout(LayoutKind.Sequential)]
struct NETRESOURCE
{    
   public int dwScope;    
   public int dwType;
   public int dwDisplayType;    
   public int dwUsage;    
   [MarshalAs(UnmanagedType.LPTStr)] public string LocalName;    
   [MarshalAs(UnmanagedType.LPTStr)] public string RemoteName;    
   [MarshalAs(UnmanagedType.LPTStr)] public string Comment;    
   [MarshalAs(UnmanagedType.LPTStr)] public string Provider;
}

// Use this when you want to pass it by-value even though the unmanaged API expects
// a pointer to a structure.  Being a class adds an extra level of indirection
[StructLayout(LayoutKind.Sequential)]
class NETRESOURCE
{    
   public int dwScope;    
   public int dwType;
   public int dwDisplayType;    
   public int dwUsage;    
   public string LocalName;    
   public string RemoteName;    
   public string Comment;    
   public string Provider;
}

Notes:

Without the Structlayout the WNetAddConnection2 does not work !!!

This is defined as a class rather than a structure, so it's only appropriate for passing (by-value) when a pointer to a structure is needed.

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