C# 关于反射事件
在frmMain类中的代码
private void StartRun(string tag, string date, bool tipType)
{
var dllPath = string.Format("{0}.{1}", GetType().Namespace, tag);
var assembly = Assembly.Load(dllPath);
var classFullPath = string.Format("{0}.{1}.{2}", GetType().Namespace, tag, "RunBTW");
var type = assembly.GetType(classFullPath);
object instance = assembly.CreateInstance(classFullPath);
var eventInfo = type.GetEvent("AppendTips", BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public | BindingFlags.Static);
var tDelegate = eventInfo.EventHandlerType;
var miHandler = typeof(frmMain).GetMethod("AppendTips", BindingFlags.Public | BindingFlags.Static);
var d = Delegate.CreateDelegate(tDelegate, miHandler);
var miAddHandler = eventInfo.GetAddMethod();
object[] addHandlerArgs = { d };
miAddHandler.Invoke(instance, addHandlerArgs);
var method = type.GetMethod("StartRun");
method.Invoke(instance, new object[] { date, tipType });
}
public static void AppendTips(string tips, Color color, bool tipsType)
{
if (frm.richResultAuto.InvokeRequired)
{
AppendTipsDelegate atd = new AppendTipsDelegate(Tips);
frm.Invoke(atd, new object[] { tips, color, tipsType });
}
else
{
Tips(tips, color, tipsType);
}
}
动态加载dll文件Assembly.Load加载的是相对路径 而Assembly.LoadFile需要一个绝对路径
frmMain类中的AppendTips方法必须是public static 不然绑定不了。
var eventInfo = type.GetEvent("AppendTips", BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public | BindingFlags.Static);中的AppendTips这里是反射了RunBTW类中的AppendTips事件名称。
public class RunBTW
{
public delegate void AppendTipsDelegate(string tips, Color color, bool tipsType);
public event AppendTipsDelegate AppendTips;
public void StartRun(string date, bool tipsType)
{
}
}
RunBTW中的StartRun方法是没有返回值如果有返回值，比如说返回一个int类型
var cusRerurnValue= method.Invoke(instance, new object[] { date, tipType });
这里的cusRerurnValue就是返回值。
