您可以在名称空间中使用LicenceUsageMode枚举
System.ComponentModel:
bool designMode = (LicenseManager.UsageMode == LicenseUsageMode.Designtime);

您可以在名称空间中使用LicenceUsageMode枚举
System.ComponentModel:
bool designMode = (LicenseManager.UsageMode == LicenseUsageMode.Designtime);