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1、首先利用 visual studio 里面的 button 和 textbox 模块建立上图模块。然后就是编写程序： 该程序最重要的是要理解清楚计算器的运算逻辑。 public partial class Form1 : Form string a, b, q, ac; int c = 0, d = 0, n = 0, p = 0, m = 0; double temp1 = -1; int pos = 0; public Form1()InitializeComponent();sender,private void textBox1_TextChanged( objectEventArgs
2、 e)public void addNum(int num)textBox1.Text = textBox1.Text + num.ToString();if (c > 0)/ 管T理Oa加？减？乘？除y运?算？textBox1.Text = "" ;a = num.ToString();b = b + a;textBox1.Text = b;private void button1_Click( object sender, EventArgse)addNum(7);/向一显？示o?屏0加？字d?n+;private void button2_Click( obje
3、ct sender, EventArgs e)addNum(8);private void button3_Click( object sender, EventArgs e)addNum(9);private voidbutton5_Click(objectsender,EventArgs e)private void button9_Click( object sender, EventArgs e)addNum(4);private voidbutton6_Click(objectsender,EventArgs e)addNum(5);private voidbutton7_Click
4、(objectsender,EventArgs e)addNum(6);addNum(1);privatevoidbutton10_Click(objectsender,EventArgse)addNum(2);privatevoidbutton11Click(objectsender,EventArgse)addNum(3);privatevoidbutton14Click(objectsender,EventArgse)addNum(0);private void button15_Click( object sender, EventArgse)if (p=0)textBoxl.Text
5、 = textBoxl.Text +"."/ 加上 |?小？数oy点i?p+;m+;if (c > 0)管理 Oa加？减？乘？除y运?算？b = b + "." ;private void button4_Click( object sender, EventArgs e) pos = 1;temp1 =Convert .ToDouble (textBox1.Text);textBox1.Text =temp1+"+"d+;c+;EventArgs e)EventArgsp = 0;private void button8_Cl
6、ick( object sender,pos = 2;temp1 = Convert .ToDouble(textBox1.Text);textBox1.Text = temp1 + "-" ;c+; p = 0;private void button12_Click( object sender,e)pos = 3;temp1 = Convert .ToDouble(textBox1.Text);textBox1.Text = temp1 + "*" ;c+; p = 0;private void button17_Click( object send
7、er, EventArgse)pos = 4;temp1 = Convert .ToDouble(textBox1.Text); textBox1.Text = temp1 + "/" ; c+; p = 0;EventArgsprivate void button13_Click( object sender, e)double temp2 = Convert .ToDouble(b); switch (pos)case 1:textBox1.Text = (temp1 +temp2).ToString();break ; case 2:textBox1.Text = (temp1 - temp2).ToString();break ;case 3:textBox1.Text = (temp1 *temp2).ToString();break ;case 4:textBox1.Text = (temp1 /temp2).ToString();break ;EventArgsprivate void button17_Click( object sender,e)textBoxl.Text ="" ; / 清？空？显？示o?器?temp1 = 0;pos = 0;b = "" ;nnn = 0;c = 0;p = 0;