private void button1_Click(object sender, EventArgs e)
{
//this.label1.Text = this.textBox1.Text + comboBox1.SelectedItem + this.textBox2.Text;
String str = comboBox1.GetItemText(comboBox1.SelectedItem);
Operation oper = OperationFactory.createOperation(str);
try
{
oper.num1 = Convert.ToDouble(this.textBox1.Text);
oper.num2 = Convert.ToDouble(this.textBox2.Text);
}catch (Exception)
{
throw;
}
double result = oper.getResult();
this.label1.Text = Convert.ToString("result =" + result);
}
private void btnOperation_Click(object sender, EventArgs e)
{
Button btn = sender as Button;
Operation oper;
switch (btn.Name)
{
case "btnAdd":
equalStatus = false;
multiDeal();
calShow += "+";
txtResual.Text = calShow;
setBtnEnableMethon(false);
break;
case "btnSub":
equalStatus = false;
multiDeal();
calShow += "-";
txtResual.Text = calShow;
setBtnEnableMethon(false);
break;
case "btnMul":
equalStatus = false;
multiDeal();
calShow += "*";
txtResual.Text = calShow;
setBtnEnableMethon(false);
break;
case "btnDiv":
equalStatus = false;
multiDeal();
calShow += "/";
txtResual.Text = calShow;
setBtnEnableMethon(false);
break;
case "btnEqual":
equalStatus = true;
multiDeal();
break;
case "btnPoint":
if (equalStatus) //等于号按过之后点数字则直接清除原来的结果
{
equalStatus = false;
calShow = "";
resultDouble = 0.0;
txtResual.Text = "";
}
oper = OperationFactory.createOperation(".");
calShow = oper.addPoint(calShow);
txtResual.Text = calShow;
setBtnEnableMethon(true);
break;
case "btnDel":
if (calShow.Length != 0)
{
calShow = calShow.Substring(0, calShow.Length - 1); //删除最后一个字符
}
txtResual.Text = calShow;
setBtnEnableMethon(true);
break;
case "btnClear":
calShow = "";
resultDouble = 0;
txtResual.Text = "";
break;
case "btnSquareRoot":
multiDeal(); //先得出前面表达式的值
oper = OperationFactory.createOperation("SquareRoot");
resultDouble = oper.getResult();
calShow = resultDouble.ToString();
txtResual.Text = calShow;
break;
case "btnPosAndNeg":
multiDeal(); //先计算结果，再来加正负号
oper = OperationFactory.createOperation("+/-");
calShow = oper.posAndNeg(calShow);
txtResual.Text = calShow;
break;
default:
break;
}
}
private void multiDeal()
{
try
{
//将前面的表达式的值计算出来
Regex reg = new Regex(@"(\+|\-)?(\d+)(\.\d+)?(\+|\-|\*|\/)(\+|\-)?(\d+)(\.\d+)?");
var res = reg.Match(calShow).Groups;
//res[0] 整个匹配的表达式
//res[1] 第一个操作数的符号
//res[2] 第一个操作数的整数部分
//res[3] 第一个操作数的小数部分
//res[4] 操作符
//res[5] 第二个操作数的符号
//res[6] 第二个操作数的整数部分
//res[7] 第而个操作数的小数部分
Operation oper;
switch (res[4].ToString())
{
case "+":
oper = OperationFactory.createOperation("+");
oper.NumberA = Convert.ToDouble(res[1].ToString() + res[2].ToString() + res[3].ToString());
oper.NumberB = Convert.ToDouble(res[5].ToString() + res[6].ToString() + res[7].ToString());
resultDouble = oper.getResult();
calShow = resultDouble.ToString();
break;
case "-":
oper = OperationFactory.createOperation("-");
oper.NumberA = Convert.ToDouble(res[1].ToString() + res[2].ToString() + res[3].ToString());
oper.NumberB = Convert.ToDouble(res[5].ToString() + res[6].ToString() + res[7].ToString());
resultDouble = oper.getResult();
calShow = resultDouble.ToString();
break;
case "*":
oper = OperationFactory.createOperation("*");
oper.NumberA = Convert.ToDouble(res[1].ToString() + res[2].ToString() + res[3].ToString());
oper.NumberB = Convert.ToDouble(res[5].ToString() + res[6].ToString() + res[7].ToString());
resultDouble = oper.getResult();
calShow = resultDouble.ToString();
break;
case "/":
oper = OperationFactory.createOperation("/");
oper.NumberA = Convert.ToDouble(res[1].ToString() + res[2].ToString() + res[3].ToString());
oper.NumberB = Convert.ToDouble(res[5].ToString() + res[6].ToString() + res[7].ToString());
if (oper.NumberB == 0)
{
throw new Exception("除数不能为0！");
}
resultDouble = oper.getResult();
calShow = resultDouble.ToString();
break;
default:
break;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "警告");
}
txtResual.Text = calShow;
}