计算器

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 JiSuanQi{ public partial class Form1 : Form { int flagDot = 0; bool pressDot = false; float numFirst; string oprator; public Form1() { InitializeComponent(); } private void delZero(string str) { //意思 if (str != "") {

if (str.Substring(0, 1) == "0") { if (flagDot != 1) { txtShow.Text = ""; flagDot = 0; } } } } private void btnZero_Click(object sender, EventArgs e) { delZero(txtShow.Text); txtShow.Text = txtShow.Text + 0; }

private void btnOne_Click(object sender, EventArgs e) { delZero(txtShow.Text); txtShow.Text = txtShow.Text + 1; }

private void btnPoint_Click(object sender, EventArgs e) { flagDot = 1; delZero(txtShow.Text); if (pressDot == false) { pressDot = true; txtShow.Text = txtShow.Text + "."; } }

private void btnThree_Click(object sender, EventArgs e) { delZero(txtShow.Text); txtShow.Text = txtShow.Text + 3; }

private void btnTwo_Click(object sender, EventArgs e) { delZero(txtShow.Text); txtShow.Text = txtShow.Text + 2; }

private void btnFour_Click(object sender, EventArgs e) { delZero(txtShow.Text); txtShow.Text = txtShow.Text + 4; }

private void btnFive_Click(object sender, EventArgs e) { delZero(txtShow.Text); txtShow.Text = txtShow.Text + 5; }

private void btnSix_Click(object sender, EventArgs e) { delZero(txtShow.Text); txtShow.Text = txtShow.Text + 6; }

private void btnSeven_Click(object sender, EventArgs e) { delZero(txtShow.Text); txtShow.Text = txtShow.Text + 7; }

private void btnEight_Click(object sender, EventArgs e) { delZero(txtShow.Text); txtShow.Text = txtShow.Text + 8; }

private void btnNine_Click(object sender, EventArgs e) { delZero(txtShow.Text); txtShow.Text = txtShow.Text + 9; }

private void btnClear_Click(object sender, EventArgs e) { pressDot = false; txtShow.Text = ""; }

private void btnSum_Click(object sender, EventArgs e) { numFirst = float.Parse(txtShow.Text); oprator = "+"; txtShow.Text = ""; pressDot = false;

} private void button14_Click(object sender, EventArgs e) { numFirst = float.Parse(txtShow.Text); oprator = "*"; txtShow.Text = ""; pressDot = false; } private void button18_Click(object sender, EventArgs e) { numFirst = float.Parse(txtShow.Text); oprator = "/"; txtShow.Text = ""; pressDot = false; }

private void button15_Click(object sender, EventArgs e) { numFirst = float.Parse(txtShow.Text); oprator = "-"; txtShow.Text = ""; pressDot = false; } private void btnResult_Click(object sender, EventArgs e) { float result; if (oprator == "+") { result = numFirst + (float.Parse(txtShow.Text)); txtShow.Text = result.ToString(); } else if (oprator== "-") { result=numFirst-(float.Parse(txtShow.Text)); txtShow.Text=result.ToString(); }

else if (oprator == "*") { result = numFirst * (float.Parse(txtShow.Text)); txtShow.Text = result.ToString(); } else if (oprator == "/") {

result = numFirst / (float.Parse(txtShow.Text)); txtShow.Text = result.ToString(); } }

private void btnDelete_Click(object sender, EventArgs e) { string str = txtShow.Text, strText; if (txtShow.Text.Length != 0) { strText = str.Substring(txtShow.Text.Length - 1, 1); if (str.Substring(0, 1) == "0") { txtShow.Text = ""; pressDot = false; } txtShow.Text = str.Substring(0, txtShow.Text.Length - 1);

}

else { txtShow.Text = ""; } flagDot = 0; }

}}

转载于:https://www.cnblogs.com/abcdefg123/p/4856063.html

相关资源：理财计算器