广告
class Command
{
public virtual void Execute() { }
}
class InvalidOperationException<T> : InvalidOperationException
where T : Command
{
public InvalidOperationException(string message) : base(message) { }
// some specific information about
// the command type T that threw this exception
}
static class CommandExtensions
{
public static void ThrowInvalidOperationException<TCommand>(
this TCommand command, string message)
where TCommand : Command
{
throw new InvalidOperationException<TCommand>(message);
}
}
class CopyCommand : Command
{
public override void Execute()
{
// after something went wrong:
this.ThrowInvalidOperationException("Something went wrong");
}
}
class CutCommand : Command
{
public override void Execute()
{
// after something went wrong:
this.ThrowInvalidOperationException("Something else went wrong");
}
}
一起学吧部分文章转载自互联网,供读者交流和学习,若有涉及作者版权等问题请及时与我们联系,以便更正、删除或按规定办理。感谢所有提供资讯的网站,欢迎各类媒体与一起学吧进行文章共享合作。
广告
广告
广告