private static IAddrBook ADX_GetAddrBook()
{
if (MAPI.MAPIInitialize(IntPtr.Zero) == MAPI.S_OK)
{
IntPtr sessionPtr = IntPtr.Zero;
MAPI.MAPILogonEx(0, null, null, MAPI.MAPI_EXTENDED | MAPI.MAPI_ALLOW_OTHERS, out sessionPtr);
if (sessionPtr == IntPtr.Zero)
{
MAPI.MAPILogonEx(0, null, null, MAPI.MAPI_EXTENDED | MAPI.MAPI_NEW_SESSION | MAPI.MAPI_USE_DEFAULT, out sessionPtr);
}
if (sessionPtr != IntPtr.Zero)
{
try {
object sessionObj = Marshal.GetObjectForIUnknown(sessionPtr);
if (sessionObj != null)
{
try {
IMAPISession session = sessionObj as IMAPISession;
if (session != null)
{
IntPtr addrBookPtr = IntPtr.Zero;
session.OpenAddressBook(0, IntPtr.Zero, MAPI.AB_NO_DIALOG, out addrBookPtr);
if (addrBookPtr != IntPtr.Zero)
{
try {
object addrBookObj = Marshal.GetObjectForIUnknown(addrBookPtr);
if (addrBookObj != null)
{
return(addrBookObj as IAddrBook);
}
}
finally {
Marshal.Release(addrBookPtr);
}
}
}
}
finally {
Marshal.ReleaseComObject(sessionObj);
}
}
}
finally {
Marshal.Release(sessionPtr);
}
}
}
else
{
throw new ApplicationException("MAPI can not be initialized.");
}
return(null);
}