this.TextBox1.Text = System.DateTime.Now.ToString("D");
this.TextBox2.Text = System.DateTime.Now.ToString("d");
this.TextBox3.Text = System.DateTime.Now.ToString("F");
this.TextBox4.Text = System.DateTime.Now.ToString("f");
this.TextBox5.Text = System.DateTime.Now.ToString("G");
this.TextBox6.Text = System.DateTime.Now.ToString("g");
this.TextBox7.Text = System.DateTime.Now.ToString("T");
this.TextBox8.Text = System.DateTime.Now.ToString("t");
this.TextBox9.Text = System.DateTime.Now.ToString("U");
this.TextBox10.Text = System.DateTime.Now.ToString("u");
this.TextBox11.Text = System.DateTime.Now.ToString("m");
this.TextBox12.Text = System.DateTime.Now.ToString("M");
this.TextBox13.Text = System.DateTime.Now.ToString("r");
this.TextBox14.Text = System.DateTime.Now.ToString("R");
this.TextBox15.Text = System.DateTime.Now.ToString("y");
this.TextBox16.Text = System.DateTime.Now.ToString("Y");
this.TextBox17.Text = System.DateTime.Now.ToString("o");
this.TextBox18.Text = System.DateTime.Now.ToString("O");
this.TextBox19.Text = System.DateTime.Now.ToString("s");
this.TextBox20.Text = System.DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:ffff");
this.TextBox21.Text = System.DateTime.Now.ToString("yyyy年MM月dd HH时mm分ss秒");
this.TextBox22.Text = System.DateTime.Now.ToString("dddd, MMMM dd yyyy");
this.TextBox23.Text = System.DateTime.Now.ToString("ddd, MMM d "'"yy");
this.TextBox24.Text = System.DateTime.Now.ToString("dddd, MMMM dd");
this.TextBox25.Text = System.DateTime.Now.ToString("M/yy");
this.TextBox26.Text = System.DateTime.Now.ToString("dd-MM-yy");
string[] Day = new string[] { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
this.TextBox1.Text = System.DateTime.Now.AddDays(-1).ToShortDateString();
this.TextBox2.Text = DateTime.Now.AddDays(1).ToShortDateString();
this.TextBox3.Text = DateTime.Now.AddDays(Convert.ToDouble((0 - Convert.ToInt16(DateTime.Now.DayOfWeek)))).ToShortDateString();
this.TextBox4.Text = DateTime.Now.AddDays(Convert.ToDouble((6 - Convert.ToInt16(DateTime.Now.DayOfWeek)))).ToShortDateString();
this.TextBox5.Text = Day[Convert.ToInt16(DateTime.Now.DayOfWeek)];
this.TextBox6.Text = DateTime.Now.AddDays(Convert.ToDouble((0 - Convert.ToInt16(DateTime.Now.DayOfWeek))) - 7).ToShortDateString();
this.TextBox7.Text = DateTime.Now.AddDays(Convert.ToDouble((6 - Convert.ToInt16(DateTime.Now.DayOfWeek))) - 7).ToShortDateString();
this.TextBox8.Text = DateTime.Now.AddDays(Convert.ToDouble((0 - Convert.ToInt16(DateTime.Now.DayOfWeek))) + 7).ToShortDateString();
this.TextBox9.Text = DateTime.Now.AddDays(Convert.ToDouble((6 - Convert.ToInt16(DateTime.Now.DayOfWeek))) + 7).ToShortDateString();
this.TextBox10.Text =DateTime.Now.ToString("yyyy-MM-01");
this.TextBox11.Text=DateTime.Parse(DateTime.Now.ToString("yyyy-MM-01")).AddMonths(1).AddDays(-1).ToShortDateString();
this.TextBox12.Text=System.DateTime.Parse(DateTime.Now.ToString("yyyy-MM-01")).AddMonths(-1).ToShortDateString();
this.TextBox13.Text=System.DateTime.Parse(DateTime.Now.ToString("yyyy-MM-01")).AddMonths(1).ToShortDateSring();