C#超实用代码段合集

int d = System.DateTime.Today.Day; int weeks = getWeekDay(y, m, d);

switch (weeks) {

case 1: this.TextBox1.Text = "星期一";

break; case 2:

this.TextBox1.Text = "星期二"; break;

case 3: this.TextBox1.Text = "星期三";

break; case 4:

this.TextBox1.Text = "星期四"; break;

case 5: this.TextBox1.Text = "星期五";

break; case 6:

this.TextBox1.Text = "星期六"; break;

case 7: this.TextBox1.Text = "星期日";

break; }

} /// <summary>根据日期，获得星期几</summary>

/// <param name="y">年</param> /// <param name="m">月</param>

/// <param name="d">日</param> /// <returns>星期几，1代表星期一；7代表星期日</returns>

public static int getWeekDay(int y, int m, int d) {

if (m == 1) m = 13; if (m == 2) m = 14;

int week = (d + 2 * m + 3 * (m + 1) / 5 + y + y / 4 - y / 100 + y / 400) % 7 + 1; return week;

}