c#备忘知识点
1.比较字符串
private void button1_Click(object sender, EventArgs e) { if(string.Compare(textBox1 .Text .ToLower (),textBox2.Text.ToLower())<0) MessageBox.Show ("字符串1小于字符串2","信息",MessageBoxButtons.OK,MessageBoxIcon.Information ); if (string.Compare(textBox1.Text.ToLower(), textBox2.Text.ToLower()) == 0) MessageBox.Show("字符串1等于字符串2", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information); if (string.Compare(textBox1.Text.ToLower(), textBox2.Text.ToLower()) > 0) MessageBox.Show("字符串1大于字符串2", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information); }
2.日期年月日
DateTime dt1 = new DateTime(n1+60, y1, r1); TimeSpan ts = dt1 - DateTime.Now; Console.WriteLine("从现在到其60周岁期间,总共{0}天",ts.Days.ToString ());
3.XMLHTTP向服务器端发送和接受的压缩的字符串(字节传送)
发送:str=UnicodeEncoding.UTF8.GetBytes(p_sStr); 接收:Object =UnicodeEncoding.GetEncoding(936).GetString((byte[])http.responseBody);