C#win控件

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

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 _1 {             public partial class Form1 : Form     {         public Form1()         {             InitializeComponent();                       }         int i = 1;         private void button1_Click(object sender, EventArgs e)         {             B.Text = i+"";             i++;         }           private void button2_Click(object sender, EventArgs e)         {                       }       } }