我有一个有效的项目,其中包括诸如计算,串行端口等的单独类别,并希望将它们封装到dll中,以便在其他类似项目中使用。我正在尝试实施工厂,首先是用于串行端口工厂的工厂,因此我可以在多个DLL之间使用。这是我的第一次,并且已经阅读了大量教程,并且已经从这个示例开始:
https://www.codeproject.com/articles/1075518/learning-factory-pattern-using-csharp
哪个运作良好,但是我想将Filelogger移出其自己的班级,所以我已经尝试了一段时间,但是需要朝正确的方向推动吗?
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace FactoryPatternSample
{
interface ILogger
{
void Log(string Message);
}
enum LoggerType
{
File,
Database,
EventViewer
}
public class File
{
public class FileLogger : ILogger
{
public void Log(string Message)
{
Console.WriteLine("{0} - Logged in File.", Message);
}
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace FactoryPatternSample
{
class Program
{
File.FileLogger flogger = new File.FileLogger();
interface ILogger
{
void Log(string Message);
}
enum LoggerType
{
File,
Database,
EventViewer
}
class DatabaseLogger : ILogger
{
public void Log(string Message)
{
Console.WriteLine("{0} - Logged in Database.", Message);
}
}
class EventViewerLogger : ILogger
{
public void Log(string Message)
{
Console.WriteLine("{0} - Logged in EventViewer.", Message);
}
}
class LoggerFactory
{
public static ILogger Get(LoggerType type)
{
switch (type)
{
case LoggerType.Database:
return new DatabaseLogger();
case LoggerType.EventViewer:
return new EventViewerLogger();
case LoggerType.File:
default:
return new flogger();
}
}
}
static void Main(string[] args)
{
ILogger logger1 = LoggerFactory.Get(LoggerType.Database);
logger1.Log("Message from Main");
ILogger logger2 = LoggerFactory.Get(LoggerType.File);
logger2.Log("Message from Main");
ILogger logger3 = LoggerFactory.Get(LoggerType.EventViewer);
logger3.Log("Message from Main");
Console.ReadKey();
/*Output
Message from Main - Logged in Database.
Message from Main - Logged in File.
Message from Main - Logged in EventViewer.
*/
}
}
}
这一点是引起问题的原因:
return new flogger();
这是错误:
错误CS0246找不到类型或名称名称'Flogger'(您是否缺少使用指令或汇编引用?)
我只是无法让它参考文件。FileLogger,请帮助?
已解决,一旦我删除了:
interface ILogger
{
void Log(string Message);
}
从程序类中结束了,现在它有效,因为我有两个接口