C#实现简易版的计算器数

痛定思痛。 2022-01-23 13:07 236阅读 0赞

界面设计：textbook 和18个button按钮  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDI2OTIwNA_size_16_color_FFFFFF_t_70]代码部分：

private void Form1_Load(object sender, EventArgs e)
            {
                //计算计算器窗口居中
                int left = Screen.PrimaryScreen.Bounds.Width / 2 - this.Width / 2;
                int top = Screen.PrimaryScreen.Bounds.Height / 2 - this.Height / 2;
                this.Location = new Point(left, top);
                
            }
            double num1 = 0;
            double num2 = 0;
            bool iskey = false;
            
            //1
            private void Button7_Click(object sender, EventArgs e)
            {          
                if (iskey)
                {
                    textBox1.Text = "";
                    iskey = false;
                }
                textBox1.Text += "1";
    
            }
            //2
            private void Button6_Click(object sender, EventArgs e)
            {
                if (iskey)
                {
                    textBox1.Text = "";
                    iskey = false;
                }
                textBox1.Text += "2";
            }
            //3
            private void Button5_Click(object sender, EventArgs e)
            {
                if (iskey)
                {
                    textBox1.Text = "";
                    iskey = false;
                }
                textBox1.Text += "3";
            }
            //4
            private void Button11_Click(object sender, EventArgs e)
            {
                if (iskey)
                {
                    textBox1.Text = "";
                    iskey = false;
                }
                textBox1.Text += "4";
            }
            //5
            private void Button10_Click(object sender, EventArgs e)
            {
                if (iskey)
                {
                    textBox1.Text = "";
                    iskey = false;
                }
                textBox1.Text += "5";
            }
            //6
            private void Button9_Click(object sender, EventArgs e)
            {
                if (iskey)
                {
                    textBox1.Text = "";
                    iskey = false;
                }
                textBox1.Text += "6";
            }
            //7
            private void Button15_Click(object sender, EventArgs e)
            {
                if (iskey)
                {
                    textBox1.Text = "";
                    iskey = false;
                }
                textBox1.Text += "7";
            }
            //8
            private void Button14_Click(object sender, EventArgs e)
            {
                if (iskey)
                {
                    textBox1.Text = "";
                    iskey = false;
                }
                textBox1.Text += "8";
            }
            //9
            private void Button12_Click(object sender, EventArgs e)
            {
                if (iskey)
                {
                    textBox1.Text = "";
                    iskey = false;
                }
                textBox1.Text += "9";
            }
            //0
            private void Button18_Click(object sender, EventArgs e)
            {
                if (iskey)
                {
                    textBox1.Text = "";
                    iskey = false;
                }
                textBox1.Text += "0";
            }
            //小数点.
            private void Button17_Click(object sender, EventArgs e)
            {
                if (iskey)
                {
                    textBox1.Text = "";
                    iskey = false;
                }
                textBox1.Text += ".";
            }
            //CE
            private void Button1_Click(object sender, EventArgs e)
            {
                textBox1.Text = "";
            }
            string type = "";
            //=
            private void Button2_Click(object sender, EventArgs e)
            {
                if (iskey)
                {
                    return;
                }
                iskey = true;
                 if (textBox1.Text != "")
                 {
                     num2 = Convert.ToDouble(textBox1.Text);
                 }          
                switch (type)
                {
                    case "+":
                        textBox1.Text = (num1 + num2).ToString();
                        break;
                    case "-":
                        textBox1.Text = (num1 - num2).ToString();
                        break;
                    case "×":
                        textBox1.Text = (num1 * num2).ToString();
                        break;
                    case "/":
                        textBox1.Text = (num1 / num2).ToString();
                        break;
                    case "%":
                        textBox1.Text = (num1 % num2).ToString();
                        break;
                    default:
                        break;
                }
            }
    
            //-
            private void Button3_Click(object sender, EventArgs e)
            {
                if (textBox1.Text!="")
                {
                    num1 = Convert.ToDouble(textBox1.Text);
                }
                type = "-";
                iskey = true;
            }
            //×
            private void Button4_Click(object sender, EventArgs e)
            {
                type = "×";
                if (textBox1.Text!="")
                {
                    num1 = Convert.ToDouble(textBox1.Text);
                }
                iskey = true;
            }
            //除
            private void Button8_Click(object sender, EventArgs e)
            {
                type = "/";
                if (textBox1.Text!="")
                {
                    num1 = Convert.ToDouble(textBox1.Text);
                }
                iskey = true;          
            }
            //+
            private void Button13_Click(object sender, EventArgs e)
            {
                type = "+";
                if (textBox1.Text!="")
                {
                    num1 = Convert.ToDouble(textBox1.Text);
                }
                iskey = true;
    
    
            }
    
            //取余%
            private void Button16_Click(object sender, EventArgs e)
            {
                type = "%";
                if (textBox1.Text!="")
                {
                    num1 = Convert.ToDouble(textBox1.Text);
    
                }
                iskey = true;
    
    
            }
    
        }
    }

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDI2OTIwNA_size_16_color_FFFFFF_t_70]: /images/20220123/d499ac9df7344c6e9fbf4df7669da8bd.png