c#備忘知識點

1.比較字串

 

private void button1_Click(object sender, EventArgs e)        {            if(string.Compare(textBox1 .Text .ToLower (),textBox2.Text.ToLower())<0)            MessageBox.Show ("字串1小於字串2","資訊",MessageBoxButtons.OK,MessageBoxIcon.Information );            if (string.Compare(textBox1.Text.ToLower(), textBox2.Text.ToLower()) == 0)                MessageBox.Show("字串1等於字串2", "資訊", MessageBoxButtons.OK, MessageBoxIcon.Information);            if (string.Compare(textBox1.Text.ToLower(), textBox2.Text.ToLower()) > 0)                MessageBox.Show("字串1大於字串2", "資訊", 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("從現在到其60周歲期間，總共{0}天",ts.Days.ToString ());

 

 

3.XMLHTTP向伺服器端發送和接受的壓縮的字串（位元組傳送）

發送：str=UnicodeEncoding.UTF8.GetBytes(p_sStr);接收：Object =UnicodeEncoding.GetEncoding(936).GetString((byte[])http.responseBody);