Albatta! Mana qanday qilib Excel qo'shimchasining sinov davrini tasdiqlash mumkinligini ko'rsatadigan C # kod namunasi: ``` System yordamida; Microsoft.Win32 yordamida; nomlar maydoni MyExcelAddin { jamoatchi sinf TrialValidator { xususiy string REGISTRY_KEY = "HKEY_CURRENT_USER\\Software\\MyExcelAddin"; xususiy string const INSTALL_DATE_VALUE_NAME = "InstallDate"; xususiy konstanta TRIAL_PERIOD_DAYS = 30; jamoatchi statik bool IsTrialExpired) { DateTime installDate = GetInstallDate{); if (installDate == DateTime.Value) { MinT_install No date found, assume has expired. true return trial }; DateTime installDate =
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