110,555
社区成员
发帖
与我相关
我的任务
分享
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 csharp_program
{
public partial class inputbox : Form
{
public inputbox()
{
InitializeComponent();
}
private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar < 48 || e.KeyChar > 57 || e.KeyChar == 13)
{
MessageBox.Show("you press Enter!");
}
}
}
}
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 csharp_program
{
public partial class inputbox : Form
{
public inputbox()
{
InitializeComponent();
}
private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyValue == 13)
{
MessageBox.Show("you press Enter!");
}
}
}
}