一个小编程..急用

using System;

using System.Drawing;

using System.Windows;

using System.Windows.Forms;

using System.Collections;

using System.ComponentModel;

using System.Data;

namespace comput

{

///

/// 这是一个计算器的简单实现。

///

public partial class Form1 : System.Windows.Forms.Form

{

#region 控件声明

private System.Windows.Forms.TextBox txtShow;

private System.Windows.Forms.GroupBox groupBox1;

private System.Windows.Forms.Button btn_rev;

private System.Windows.Forms.Button btn_dot;

private System.Windows.Forms.Button btn_add;

private System.Windows.Forms.Button btn_equ;

private System.Windows.Forms.Button btn_sign;

private System.Windows.Forms.Button btn_sub;

private System.Windows.Forms.Button btn_mul;

private System.Windows.Forms.Button btn_0;

private System.Windows.Forms.Button btn_3;

private System.Windows.Forms.Button btn_2;

private System.Windows.Forms.Button btn_1;

private System.Windows.Forms.Button btn_6;

private System.Windows.Forms.Button btn_5;

private System.Windows.Forms.Button btn_4;

private System.Windows.Forms.Button btn_sqrt;

private System.Windows.Forms.Button btn_div;

private System.Windows.Forms.Button btn_7;

private System.Windows.Forms.Button btn_8;

private System.Windows.Forms.Button btn_9;

private System.Windows.Forms.MainMenu mainMenu1;

private System.Windows.Forms.MenuItem menuItem1;

private System.Windows.Forms.Button btn_sqr;

private System.Windows.Forms.MenuItem menuItem2;

private System.Windows.Forms.MenuItem menuItem3;

private System.Windows.Forms.MenuItem menuItem4;

private System.Windows.Forms.MenuItem menuItem5;

private System.Windows.Forms.MenuItem menuItem6;

private System.Windows.Forms.Button c;

private System.Windows.Forms.Button ce;

private System.Windows.Forms.MenuItem menuItem8;

private System.Windows.Forms.MenuItem menuItem9;

private System.Windows.Forms.MenuItem menuItem10;

///

/// 必需的设计器变量。

///

private System.ComponentModel.Container components = null;

public Form1()

{

//

// Windows 窗体设计器支持所必需的

//

InitializeComponent();

//

// TODO: 在 InitializeComponent 调用后添加任何构造函数代码

//

}

///

/// 清理所有正在使用的资源。

///

protected override void Dispose(bool disposing)

{

if (disposing)

{

if (components != null)

{

components.Dispose();

}

}

base.Dispose(disposing);

}

#endregion

#region 各控件的属性的方法Windows Form Designer generated code

///

/// 设计器支持所需的方法 - 不要使用代码编辑器修改

/// 此方法的内容。

///

private void InitializeComponent()

{

System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));

this.txtShow = new System.Windows.Forms.TextBox();

this.groupBox1 = new System.Windows.Forms.GroupBox();

this.c = new System.Windows.Forms.Button();

this.ce = new System.Windows.Forms.Button();

this.btn_rev = new System.Windows.Forms.Button();

this.btn_dot = new System.Windows.Forms.Button();

this.btn_add = new System.Windows.Forms.Button();

this.btn_equ = new System.Windows.Forms.Button();

this.btn_sign = new System.Windows.Forms.Button();

this.btn_sub = new System.Windows.Forms.Button();

this.btn_mul = new System.Windows.Forms.Button();

this.btn_0 = new System.Windows.Forms.Button();

this.btn_3 = new System.Windows.Forms.Button();

this.btn_2 = new System.Windows.Forms.Button();

this.btn_1 = new System.Windows.Forms.Button();

this.btn_6 = new System.Windows.Forms.Button();

this.btn_5 = new System.Windows.Forms.Button();

this.btn_4 = new System.Windows.Forms.Button();

this.btn_sqrt = new System.Windows.Forms.Button();

this.btn_div = new System.Windows.Forms.Button();

this.btn_7 = new System.Windows.Forms.Button();

this.btn_8 = new System.Windows.Forms.Button();

this.btn_9 = new System.Windows.Forms.Button();

this.btn_sqr = new System.Windows.Forms.Button();

this.mainMenu1 = new System.Windows.Forms.MainMenu();

this.menuItem1 = new System.Windows.Forms.MenuItem();

this.menuItem2 = new System.Windows.Forms.MenuItem();

this.menuItem3 = new System.Windows.Forms.MenuItem();

this.menuItem4 = new System.Windows.Forms.MenuItem();

this.menuItem5 = new System.Windows.Forms.MenuItem();

this.menuItem6 = new System.Windows.Forms.MenuItem();

this.menuItem8 = new System.Windows.Forms.MenuItem();

this.menuItem9 = new System.Windows.Forms.MenuItem();

this.menuItem10 = new System.Windows.Forms.MenuItem();

this.groupBox1.SuspendLayout();

this.SuspendLayout();

//

// txtShow

//

this.txtShow.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(192)), ((System.Byte)(255)));

this.txtShow.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.txtShow.ForeColor = System.Drawing.Color.Purple;

this.txtShow.Location = new System.Drawing.Point(25, 8);

this.txtShow.Name = txtShow;

this.txtShow.Size = new System.Drawing.Size(228, 23);

this.txtShow.TabIndex = 1;

this.txtShow.Text = 0.;

this.txtShow.TextAlign = System.Windows.Forms.HorizontalAlignment.Right;

//

// groupBox1

//

this.groupBox1.Controls.Add(this.c);

this.groupBox1.Controls.Add(this.ce);

this.groupBox1.Controls.Add(this.btn_rev);

this.groupBox1.Controls.Add(this.btn_dot);

this.groupBox1.Controls.Add(this.btn_add);

this.groupBox1.Controls.Add(this.btn_equ);

this.groupBox1.Controls.Add(this.btn_sign);

this.groupBox1.Controls.Add(this.btn_sub);

this.groupBox1.Controls.Add(this.btn_mul);

this.groupBox1.Controls.Add(this.btn_0);

this.groupBox1.Controls.Add(this.btn_3);

this.groupBox1.Controls.Add(this.btn_2);

this.groupBox1.Controls.Add(this.btn_1);

this.groupBox1.Controls.Add(this.btn_6);

this.groupBox1.Controls.Add(this.btn_5);

this.groupBox1.Controls.Add(this.btn_4);

this.groupBox1.Controls.Add(this.btn_sqrt);

this.groupBox1.Controls.Add(this.btn_div);

this.groupBox1.Controls.Add(this.btn_7);

this.groupBox1.Controls.Add(this.btn_8);

this.groupBox1.Controls.Add(this.btn_9);

this.groupBox1.Controls.Add(this.btn_sqr);

this.groupBox1.Location = new System.Drawing.Point(24, 40);

this.groupBox1.Name = groupBox1;

this.groupBox1.Size = new System.Drawing.Size(232, 184);

this.groupBox1.TabIndex = 21;

this.groupBox1.TabStop = false;

this.groupBox1.Text = 计算机区;

//

// c

//

this.c.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.c.ForeColor = System.Drawing.Color.Red;

this.c.Location = new System.Drawing.Point(178, 48);

this.c.Name = c;

this.c.Size = new System.Drawing.Size(36, 61);

this.c.TabIndex = 41;

this.c.Text = C;

this.c.Click += new System.EventHandler(this.btn_Oper);

//

// ce

//

this.ce.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.ce.ForeColor = System.Drawing.Color.Red;

this.ce.Location = new System.Drawing.Point(138, 16);

this.ce.Name = ce;

this.ce.Size = new System.Drawing.Size(76, 29);

this.ce.TabIndex = 40;

this.ce.Text = CE;

this.ce.Click += new System.EventHandler(this.btn_Oper);

//

// btn_rev

//

this.btn_rev.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_rev.ForeColor = System.Drawing.Color.Blue;

this.btn_rev.Location = new System.Drawing.Point(178, 112);

this.btn_rev.Name = btn_rev;

this.btn_rev.Size = new System.Drawing.Size(36, 29);

this.btn_rev.TabIndex = 39;

this.btn_rev.Text = 1/x;

this.btn_rev.Click += new System.EventHandler(this.btn_Oper);

//

// btn_dot

//

this.btn_dot.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_dot.Location = new System.Drawing.Point(98, 144);

this.btn_dot.Name = btn_dot;

this.btn_dot.Size = new System.Drawing.Size(36, 29);

this.btn_dot.TabIndex = 38;

this.btn_dot.Tag = 0;

this.btn_dot.Text = .;

this.btn_dot.Click += new System.EventHandler(this.btn_Oper);

//

// btn_add

//

this.btn_add.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_add.ForeColor = System.Drawing.Color.Red;

this.btn_add.Location = new System.Drawing.Point(138, 144);

this.btn_add.Name = btn_add;

this.btn_add.Size = new System.Drawing.Size(36, 29);

this.btn_add.TabIndex = 37;

this.btn_add.Text = +;

this.btn_add.Click += new System.EventHandler(this.btn_Oper);

//

// btn_equ

//

this.btn_equ.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_equ.ForeColor = System.Drawing.Color.Red;

this.btn_equ.Location = new System.Drawing.Point(178, 144);

this.btn_equ.Name = btn_equ;

this.btn_equ.Size = new System.Drawing.Size(36, 29);

this.btn_equ.TabIndex = 36;

this.btn_equ.Text = =;

this.btn_equ.Click += new System.EventHandler(this.btn_equ_Click);

//

// btn_sign

//

this.btn_sign.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_sign.ForeColor = System.Drawing.Color.Blue;

this.btn_sign.Location = new System.Drawing.Point(58, 144);

this.btn_sign.Name = btn_sign;

this.btn_sign.Size = new System.Drawing.Size(36, 29);

this.btn_sign.TabIndex = 35;

this.btn_sign.Text = +/-;

this.btn_sign.Click += new System.EventHandler(this.btn_Oper);

//

// btn_sub

//

this.btn_sub.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_sub.ForeColor = System.Drawing.Color.Red;

this.btn_sub.Location = new System.Drawing.Point(138, 112);

this.btn_sub.Name = btn_sub;

this.btn_sub.Size = new System.Drawing.Size(36, 29);

this.btn_sub.TabIndex = 34;

this.btn_sub.Text = -;

this.btn_sub.Click += new System.EventHandler(this.btn_Oper);

//

// btn_mul

//

this.btn_mul.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_mul.ForeColor = System.Drawing.Color.Red;

this.btn_mul.Location = new System.Drawing.Point(138, 80);

this.btn_mul.Name = btn_mul;

this.btn_mul.Size = new System.Drawing.Size(36, 29);

this.btn_mul.TabIndex = 33;

this.btn_mul.Text = *;

this.btn_mul.Click += new System.EventHandler(this.btn_Oper);

//

// btn_0

//

this.btn_0.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_0.ForeColor = System.Drawing.Color.Blue;

this.btn_0.Location = new System.Drawing.Point(18, 144);

this.btn_0.Name = btn_0;

this.btn_0.Size = new System.Drawing.Size(36, 29);

this.btn_0.TabIndex = 32;

this.btn_0.Tag = 0;

this.btn_0.Text = 0;

this.btn_0.Click += new System.EventHandler(this.btn_0_Click);

//

// btn_3

//

this.btn_3.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_3.ForeColor = System.Drawing.Color.Blue;

this.btn_3.Location = new System.Drawing.Point(98, 112);

this.btn_3.Name = btn_3;

this.btn_3.Size = new System.Drawing.Size(36, 29);

this.btn_3.TabIndex = 31;

this.btn_3.Tag = 3;

this.btn_3.Text = 3;

this.btn_3.Click += new System.EventHandler(this.btn_0_Click);

//

// btn_2

//

this.btn_2.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_2.ForeColor = System.Drawing.Color.Blue;

this.btn_2.Location = new System.Drawing.Point(58, 112);

this.btn_2.Name = btn_2;

this.btn_2.Size = new System.Drawing.Size(36, 29);

this.btn_2.TabIndex = 30;

this.btn_2.Tag = 2;

this.btn_2.Text = 2;

this.btn_2.Click += new System.EventHandler(this.btn_0_Click);

//

// btn_1

//

this.btn_1.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_1.ForeColor = System.Drawing.Color.Blue;

this.btn_1.Location = new System.Drawing.Point(18, 112);

this.btn_1.Name = btn_1;

this.btn_1.Size = new System.Drawing.Size(36, 29);

this.btn_1.TabIndex = 29;

this.btn_1.Tag = 1;

this.btn_1.Text = 1;

this.btn_1.Click += new System.EventHandler(this.btn_0_Click);

//

// btn_6

//

this.btn_6.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_6.ForeColor = System.Drawing.Color.Blue;

this.btn_6.Location = new System.Drawing.Point(98, 80);

this.btn_6.Name = btn_6;

this.btn_6.Size = new System.Drawing.Size(36, 29);

this.btn_6.TabIndex = 28;

this.btn_6.Tag = 6;

this.btn_6.Text = 6;

this.btn_6.Click += new System.EventHandler(this.btn_0_Click);

//

// btn_5

//

this.btn_5.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_5.ForeColor = System.Drawing.Color.Blue;

this.btn_5.Location = new System.Drawing.Point(58, 80);

this.btn_5.Name = btn_5;

this.btn_5.Size = new System.Drawing.Size(36, 29);

this.btn_5.TabIndex = 27;

this.btn_5.Tag = 5;

this.btn_5.Text = 5;

this.btn_5.Click += new System.EventHandler(this.btn_0_Click);

//

// btn_4

//

this.btn_4.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_4.ForeColor = System.Drawing.Color.Blue;

this.btn_4.Location = new System.Drawing.Point(18, 80);

this.btn_4.Name = btn_4;

this.btn_4.Size = new System.Drawing.Size(36, 29);

this.btn_4.TabIndex = 26;

this.btn_4.Tag = 4;

this.btn_4.Text = 4;

this.btn_4.Click += new System.EventHandler(this.btn_0_Click);

//

// btn_sqrt

//

this.btn_sqrt.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_sqrt.ForeColor = System.Drawing.Color.Blue;

this.btn_sqrt.Location = new System.Drawing.Point(18, 16);

this.btn_sqrt.Name = btn_sqrt;

this.btn_sqrt.Size = new System.Drawing.Size(76, 29);

this.btn_sqrt.TabIndex = 25;

this.btn_sqrt.Text = sqrt;

this.btn_sqrt.Click += new System.EventHandler(this.btn_Oper);

//

// btn_div

//

this.btn_div.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_div.ForeColor = System.Drawing.Color.Red;

this.btn_div.Location = new System.Drawing.Point(138, 48);

this.btn_div.Name = btn_div;

this.btn_div.Size = new System.Drawing.Size(36, 29);

this.btn_div.TabIndex = 24;

this.btn_div.Text = /;

this.btn_div.Click += new System.EventHandler(this.btn_Oper);

//

// btn_7

//

this.btn_7.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.btn_7.ForeColor = System.Drawing.Color.Blue;

this.btn_7.Location = new System.Drawing.Point(18, 48);

this.btn_7.Name = btn_7;

this.btn_7.Size = new System.Drawing.Size(36, 29);

this.btn_7.TabIndex = 23;

this.btn_7.Tag = 7;

this.btn_7.Text = 7;

this.btn_7.Click += new System.EventHandler(this.btn_0_Click);

//

// btn_8

//

this.btn_8.Font = new System.Drawing.Font(宋体, 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.Gra