//Main_12_2_5
public static void Main_12_2_5()
{
//进行委托绑定
myDelegate = new CalculateDelegate(Add);
//回调Add方法
//myDelegate(100, 200);
myDelegate.Invoke(100, 200);
myDelegate = new CalculateDelegate(Subtract);
//myDelegate(100, 200);
myDelegate.Invoke(100, 200);
}
//Main_12_2_5
public static void Main_12_2_5()
{
//����ί�а�
myDelegate = new CalculateDelegate(Add);
//�ص�Add����
//myDelegate(100, 200);
myDelegate.Invoke(100, 200);
myDelegate = new CalculateDelegate(Subtract);
//myDelegate(100, 200);
myDelegate.Invoke(100, 200);
}
//完成计算工作
void DoCalculate(CalculateDelegate calmethod)
{
double x, y;
try
{
x = Convert.ToDouble(txtNumber1.Text);
y = Convert.ToDouble(txtNumber2.Text);
lblInfo.Text = String.Format("结果：{0}", calmethod(x, y));
}
catch (Exception e)
{
lblInfo.Text = String.Format("结果：非法数据");
}
}
//Main_12_2_8
public static void Main_12_2_8()
{
myDelegate = new CalculateDelegate(Add);
myDelegate += new CalculateDelegate(Subtract);
myDelegate += new CalculateDelegate(Multiply);
myDelegate(100, 200);
myDelegate -= new CalculateDelegate(Add);
myDelegate(100, 200);
myDelegate = (CalculateDelegate)Delegate.Combine(new CalculateDelegate(Add),
new CalculateDelegate(Subtract), new CalculateDelegate(Multiply));
myDelegate(100, 200);
myDelegate = (CalculateDelegate)Delegate.Remove(myDelegate,
new CalculateDelegate(Add));
myDelegate(100, 200);
}
private void rdoSubtract_CheckedChanged(object sender, EventArgs e)
{
curOpt = this.Subtract ; //选择函数
DoCalculate(curOpt); //调用函数
}
private void rdoMultiply_CheckedChanged(object sender, EventArgs e)
{
curOpt = this.Multiply ;
DoCalculate(curOpt);
}
private void rdoDivid_CheckedChanged(object sender, EventArgs e)
{
curOpt = this.Divid ;
DoCalculate(curOpt);
}
public frmDynamicInvokeMethod()
{
InitializeComponent();
curOpt = Add;
}
public ExternFunction(FunctionPrototype proto, CalculateDelegate func)
: base(proto, null)
{
function = func;
count = 0;
}
protected void btnCallDelegate_Click(object sender, EventArgs e)
{
CalculateDelegate cd = new CalculateDelegate(Calculate);
int result = cd(10, 20);
lblResult.Text = result.ToString();
}
private void CalculateCallback(IAsyncResult ar)
{
CalculateDelegate dlg = (CalculateDelegate)ar.AsyncState;
dlg.EndInvoke(ar);
}
public IAsyncResult BeginCalculate(int digits, AsyncCallback callback)
{
dlg = new CalculateDelegate(this.Calculate);
return(dlg.BeginInvoke(digits, callback, this));
}
public static double Calculate(double a, double b, CalculateDelegate cd)
{
return(cd.Invoke(a, b));
}
public static CSLargeInt MultiUpB(CSLargeInt baseNum, int uAddLevel, CSLargeInt targetNB, CalculateDelegate func)
{
CSLargeInt nb = new CSLargeInt(baseNum);
List <int> lstNbNum = nb.m_lstNum;
for (int i = 0; i < uAddLevel; i++)
{
int uInc = (int)(func(i + 1) * THOUSAND);
SAdd(targetNB.m_lstNum, lstNbNum);
SMultiply(lstNbNum, uInc);
lstNbNum.RemoveAt(0);
}
nb.Trim();
return(nb);
}
