转帖: using System; using System.ComponentModel; using System.Data; using System.Windows.Forms; namespace WindowsApplication1{ public partial class Form1 : Form {
如下图所示界面: 部分代码: Private Sub Button14_Click(sender As Object, e As EventArgs) Handles Button14.Click TextBox1.Text += "+" End Sub Private Sub Button19_Click(sender As Object, e As EventArgs) H
using System; using System.Collections.Generic; using System.Text; using System.Data; namespace ConsoleApplication7 { class Program { static void Main(string[] args)