Numericupdown控件是由system.windows.froms.Numericupdown类提供的，主要作用是将一个数按一定的值进行增加或减少。它主要有四个常用属性
Increment 每次单击按钮时增加或者减少的量
Maximum 最大值
Minimum 最小值
Value 当前值
decimalPlaces 显示小数的位数
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 Numericupdown
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
label3.Text = "设置值的增量";
button1.Text = "增加";
button2.Text = "减少";
label1.Text = "0";
numericUpDown1.Maximum = 10000;
}
private void numericUpDown1_ValueChanged(object sender, EventArgs e)
{
label1.Text = numericUpDown1.Value.ToString();
}
private void button1_Click(object sender, EventArgs e)
{
numericUpDown1.UpButton();
}
private void button2_Click(object sender, EventArgs e)
{
numericUpDown1.DownButton();
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
try
{
numericUpDown1.Increment = int.Parse(textBox2.Text);
}
catch
{
MessageBox.Show("格式错误");
}
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
try
{
numericUpDown1.DecimalPlaces = int.Parse(textBox1.Text);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
}