public void Handle(IExecutionPipelineContext context)
{
//在执行之前首先判断是否可以执行
if (!this.CanHandle(context))
{
return;
}
//创建“Executing”事件参数
var executingArgs = new ExecutionPipelineExecutingEventArgs(context);
//激发“Executing”事件
this.OnExecuting(executingArgs);
if (executingArgs.Cancel)
{
return;
}
//执行过滤器的前半截
var filters = ExecutionUtility.InvokeFiltersExecuting(_filters, filter => filter.OnExecuting(context));
//执行当前处理请求
this.OnExecute(context);
//执行过滤器的后半截
ExecutionUtility.InvokeFiltersExecuted(filters, filter => filter.OnExecuted(context));
//激发“Executed”事件
this.OnExecuted(new ExecutionPipelineExecutedEventArgs(context));
}
protected virtual void OnExecuting(ExecutionPipelineExecutingEventArgs e)
{
var executing = this.Executing;
if (executing != null)
{
executing(this, e);
}
}
protected virtual void OnHandlerExecuting(ExecutionPipelineExecutingEventArgs args)
{
var executing = this.HandlerExecuting;
if (executing != null)
{
executing(this, args);
}
}