我想处理文件,因为它们保存在四个目录中,它们都以非常不同的方式处理。无法将源接口类型转换为目标接口类型
我有一个在调度计时器上运行的公共处理器IFileQueueService,加载所有文件名并为每个文件调用自定义处理器IExecutionProcessor。这可能是一个简单的问题,但我拥有比标准IExecutionProvider更多属性的处理器,我不知道如何调用这些定制处理器。
//Basic processor interface
public interface IExecutionProvider
{
void ProcessFile(string file);
}
//Simplified version of one of the custom processor interfaces
public interface IKyoExecutionProcessor
{
string DestinationPath { get; set; }
}
public class KyoExecutionProcessor : IExecutionProvider, IKyoExecutionProcessor
{
//This processor moves a file to the DestinationPath.
}
public interface IFileQueueService
{
string SourcePath { get; set; }
IExecutionProvider ExecutionProvider { get; set; }
void Start();
void Stop();
}
public class FileProcessor : IFileQueueService
{
...
public virtual void ProcessFileQueue()
{
IEnumerable<string> filesToProcess = GetFilesReadyToProcess();
foreach (string file in filesToProcess.ToList())
{
ExecutionProvider.ProcessFile(file);
}
}
}
public class KYOFileSysWatcher : ServiceBase
{
private IFileQueueService Processor { get; set; }
private IKyoExecutionProcessor KyoCustomProcessor { get; set; }
public KYOFileSysWatcher()
{
Processor = ObjectFactory.GetInstance<IFileQueueService>();
KyoCustomProcessor = ObjectFactory.GetInstance<IKyoExecutionProcessor>();
//This doesn't work, cannot convert source type to target type, but it implements the IExecutionProvider interface??? How do I do this?
Processor.ExecutionProvider = KyoCustomProcessor;
Processor.Start(); //Sets up dispatch timer
}
}
如何'KyoCustomProcessor'执行'IExecutionProvider'?它明确是一个'IKyoExecutionProcessor'。 – 2012-03-14 14:29:55