1      private void Form1_Load(object sender, EventArgs e)
 2         {
 3             Random x = new Random();
 4             int i = x.Next(100); //生成一个大于等于0,小于100之间的随机数
 5             this.label1.Text =
 6             string.Format("{0}", i);
 7         }
 8 
 9         private void button1_Click(object sender, EventArgs e)
10         {
11             Form1_Load(null, null);  //刷新界面
12         }
13 
14         private void label1_Click(object sender, EventArgs e)
15         {
16 
17         }

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