Калькулятор: как прописать логику для всех кнопок

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 WindowsFormsApplication1 {
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
}
 
private void button1_Click(object sender, EventArgs e) {
 
}
 
private void button2_Click(object sender, EventArgs e) {
 
}
 
private void button3_Click(object sender, EventArgs e) {
 
}
 
private void button4_Click(object sender, EventArgs e) {
 
}
 
private void button5_Click(object sender, EventArgs e) {
 
}
 
private void button6_Click(object sender, EventArgs e) {
 
}
 
private void button7_Click(object sender, EventArgs e) {
 
}
 
private void button8_Click(object sender, EventArgs e) {
 
}
 
private void button9_Click(object sender, EventArgs e) {
 
}
 
private void button0_Click(object sender, EventArgs e) {
 
}
 
private void zapyatya_Click(object sender, EventArgs e) {
 
}
 
private void minus_Click(object sender, EventArgs e) {
 
}
 
private void plus_Click(object sender, EventArgs e) {
 
}
 
private void delenie_Click(object sender, EventArgs e) {
 
}
 
private void umnozhenie_Click(object sender, EventArgs e) {
 
}
 
private void textBox1_TextChanged(object sender, EventArgs e) {
 
}
}
}