private static void LoadZLibDLL()
{
new FileIOPermission(PermissionState.Unrestricted).Assert();
string str = Path.Combine(Environment.CurrentDirectory, ZLibNativeDllName);
if (!File.Exists(str))
{
throw new DllNotFoundException(ZLibNativeDllName);
}
ZLibNative.SafeLibraryHandle safeLibraryHandle = ZLibNative.NativeMethods.LoadLibrary(str);
if (safeLibraryHandle.IsInvalid)
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error(), new IntPtr(-1));
throw new InvalidOperationException();
}
ZLibNative.ZLibStreamHandle.zlibLibraryHandle = safeLibraryHandle;
}
internal static extern IntPtr GetProcAddress(ZLibNative.SafeLibraryHandle moduleHandle, string procName);