自己開發的一個計算器小程序
計算器程序是自己開始學習c#時自己編寫的一小程序，自己開始一直在摸索，在這其中也遇到了很多問題，比如正負號的問題，清零的操作等等。后來在同事的幫忙下順利完成了。畫面有些粗糙，望大家見諒哈~~~
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication45
{
public partial class Form1 : Form
{
static string mystring;//接受的字符串
bool val1=false;//是否點擊操作符
string leftstring;//操作符左邊的操作數
string rightstring;//操作符右邊的操作數
string strOp;//操作符
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
mystring += (this.button1.Text).ToString();
mystring = Convert.ToDouble(mystring).ToString();
this.textBox1.Text = mystring;
}//數字1
private void button2_Click(object sender, EventArgs e)
{
mystring += (this.button2.Text).ToString();
mystring = Convert.ToDouble(mystring).ToString();
this.textBox1.Text = mystring;
}//數字2
private void button3_Click(object sender, EventArgs e)
{
mystring += (this.button3.Text).ToString();
mystring = Convert.ToDouble(mystring).ToString();
this.textBox1.Text = mystring;
}//數字3
private void button4_Click_1(object sender, EventArgs e)
{
mystring += (this.button4.Text).ToString();
mystring = Convert.ToDouble(mystring).ToString();
this.textBox1.Text = mystring;
}//數字4
private void button5_Click_1(object sender, EventArgs e)
{
mystring += (this.button5.Text).ToString();
mystring = Convert.ToDouble(mystring).ToString();
this.textBox1.Text = mystring;
}//數字5
private void button6_Click_1(object sender, EventArgs e)
{
mystring += (this.button6.Text).ToString();
mystring = Convert.ToDouble(mystring).ToString();
this.textBox1.Text = mystring;
}//數字6
private void button7_Click_1(object sender, EventArgs e)
{
mystring += (this.button7.Text).ToString();
mystring = Convert.ToDouble(mystring).ToString();
this.textBox1.Text = mystring;
}//數字7
private void button8_Click_1(object sender, EventArgs e)
{
mystring += (this.button8.Text).ToString();
mystring = Convert.ToDouble(mystring).ToString();
this.textBox1.Text = mystring;
}//數字8
private void button9_Click_1(object sender, EventArgs e)
{
mystring += (this.button9.Text).ToString();
mystring = Convert.ToDouble(mystring).ToString();
this.textBox1.Text = mystring;
}//數字9
private void button10_Click(object sender, EventArgs e)
{
mystring += (this.button10.Text).ToString();
this.textBox1.Text = mystring;
}//數字0
private void button12_Click(object sender, EventArgs e)
{
if (mystring.Contains("."))
{
}
else
{
mystring += (this.button12.Text).ToString();
}
this.textBox1.Text = mystring;
}//小數點操作
private void button11_Click(object sender, EventArgs e)
{
if (this.textBox1.Text.Contains("-"))
{
this.textBox1.Text = this.textBox1.Text.TrimStart('-');
}
else
{
this.textBox1.Text = "-" + this.textBox1.Text;
}
}//正負號操作
private void button18_Click(object sender, EventArgs e)
{
mystring = string.Empty;
this.textBox1.Text = "";
val1 = false;
}//清零操作
private void button13_Click(object sender, EventArgs e)
{
strOp = "+";
if (val1==false)
{
leftstring = mystring;
mystring = string.Empty;
}
else
{
leftstring = (this.textBox1.Text).ToString();
}
val1 = true;
}//加發操作
private void button14_Click(object sender, EventArgs e)
{
strOp = "-";
if (val1 == false)
{
leftstring = mystring;
mystring = string.Empty;
}
else
{
leftstring = (this.textBox1.Text).ToString();
}
val1 = true;
}//減發操作
private void button15_Click(object sender, EventArgs e)
{
strOp = "*";
if (val1 == false)
{
leftstring = mystring;
mystring = string.Empty;
}
else
{
leftstring = (this.textBox1.Text).ToString();
}
val1 = true;
}//乘發操作
private void button16_Click(object sender, EventArgs e)
{
strOp = "/";
if (val1 == false)
{
leftstring = mystring;
mystring = string.Empty;
}
else
{
leftstring = (this.textBox1.Text).ToString();
}
val1 = true;
}//除法操作
private void button17_Click(object sender, EventArgs e)
{
rightstring = mystring;
switch(strOp)
{
case "+":
this.textBox1.Text = (Convert.ToDouble(leftstring) + Convert.ToDouble(rightstring)).ToString();
mystring = string.Empty;
break;
case "-":
this.textBox1.Text = (Convert.ToDouble(leftstring) - Convert.ToDouble(rightstring)).ToString();
mystring = string.Empty;
break;
case "*":
this.textBox1.Text = (Convert.ToDouble(leftstring) * Convert.ToDouble(rightstring)).ToString();
mystring = string.Empty;
break;
case "/":
this.textBox1.Text = (Convert.ToDouble(leftstring) / Convert.ToDouble(rightstring)).ToString();
mystring = string.Empty;
break;
case "sin":
this.textBox1.Text = Math.Sin(Math.PI*(Convert.ToDouble(this.textBox1.Text))/180).ToString();
break;
case "cos":
this.textBox1.Text = Math.Sin(Math.PI * (Convert.ToDouble(this.textBox1.Text)) / 180).ToString();
break;
case "tan":
this.textBox1.Text = Math.Sin(Math.PI * (Convert.ToDouble(this.textBox1.Text)) / 180).ToString();
break;
case "sqrt":
this.textBox1.Text = Math.Sqrt(Convert.ToDouble(this.textBox1.Text)).ToString();
mystring = this.textBox1.Text;
break;
default:
break;
}
}//計算操作
private void button19_Click(object sender, EventArgs e)
{
if (this.textBox1.Text !=string.Empty)
{
this.textBox1.Text = this.textBox1.Text.Remove(this.textBox1.Text.Length -1);
mystring = this.textBox1.Text;
}
else
{
MessageBox.Show("您好，現在所顯示的數據已經為空了，請您再次輸入正確的數據！");
}
}//退格操作
private void button20_Click(object sender, EventArgs e)
{
strOp = "sin";
if (val1 == false)
{
leftstring = mystring;
mystring = string.Empty;
}
else
{
}
val1 = true;
}// sin 操作
private void button24_Click(object sender, EventArgs e)
{
Help.ShowHelp(this, "C:\\WINDOWS\\system32\\calc.exe");// 显示XP系统自带计算器
}
private void button21_Click(object sender, EventArgs e)
{
strOp = "cos";
if (val1 == false)
{
leftstring = mystring;
mystring = string.Empty;
}
else
{
}
val1 = true;
}// cos 操作
private void button22_Click(object sender, EventArgs e)
{
strOp = "tan";
if (val1 == false)
{
leftstring = mystring;
mystring = string.Empty;
}
else
{
}
val1 = true;
}// tan 操作
private void button23_Click(object sender, EventArgs e)
{
strOp = "sqrt";
if (val1 == false)
{
leftstring = mystring;
mystring = string.Empty;
}
else
{
}
val1 = true;
}// sqrt 操作
}
}
转载于:https://www.cnblogs.com/luoxuefeihua/archive/2011/10/12/2208928.html