尝试将AsyncCallback添加到BeginInvoke()时C#参数计数不匹配

>它没有回调委托：

this.BeginInvoke(cp,new object[] { datoteke,this.treeView1.SelectedNode.FullPath.ToString(),this,efekt },null); //works  1.

>不适用于回调委托(参数计数不匹配)：

this.BeginInvoke(cp,new AsyncCallback(callBackDelegate),null); //doesn't work parameter count mismatch 2.

>如果我这样做,可以使用回调委托：

cp.BeginInvoke(datoteke,efekt,null); //works  3.

我的问题是为什么一种方式有效而另一种无效？我是新来的.有人会如此善良地回答我的问题并指出我的错误吗？

private delegate void copyDelegat(List<ListViewItem> datoteke,string path,PrenosForm forma,DragDropEffects efekt);
 private delegate void callBackDelegat(IAsyncResult a);

 public void doCopy(List<ListViewItem> datoteke,DragDropEffects efekt)
 {
     new Form2(datoteke,path,forma,efekt);
 }

 public void callBackFunc(IAsyncResult a)
 {
     AsyncResult res = a.AsyncState as AsyncResult;
     copyDelegat delegat = res.AsyncDelegate as copyDelegat;
     delegat.EndInvoke(a);
 }

public void kopiraj(List<ListViewItem> datoteke,DragDropEffects efekt)
{


 copyDelegat cp = new copyDelegat(doCopy);
 callBackDelegat callBackDelegate = new callBackDelegat(callBackFunc);
 this.BeginInvoke(cp,null); //doesn't work parameter count missmatch 2.
 this.BeginInvoke(cp,null); //works  1.
 cp.BeginInvoke(datoteke,null); //works  3.

}