NumericUpDown — регулятор численных значений

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Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApplication1 {
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
}
//кнопка OK
private void button1_Click(object sender, EventArgs e) {
textBox1.Text += numericUpDown1.Value + "\r\n";
}
//кнопка Clear
private void button2_Click(object sender, EventArgs e) {
textBox1.Clear();
}
}
}