//2007年4月24日
 this.TextBox6.Text = System.DateTime.Now.ToString("D");
 //2007-4-24
 this.TextBox7.Text = System.DateTime.Now.ToString("d");
 //2007年4月24日 16:30:15
 this.TextBox8.Text = System.DateTime.Now.ToString("F");
 //2007年4月24日 16:30
 this.TextBox9.Text = System.DateTime.Now.ToString("f");
 //2007-4-24 16:30:15
 this.TextBox10.Text = System.DateTime.Now.ToString("G");
 //2007-4-24 16:30
 this.TextBox11.Text = System.DateTime.Now.ToString("g");
 //16:30:15
 this.TextBox12.Text = System.DateTime.Now.ToString("T");
 //16:30
 this.TextBox13.Text = System.DateTime.Now.ToString("t");
 //2007年4月24日 8:30:15
 this.TextBox14.Text = System.DateTime.Now.ToString("U");
 //2007-04-24 16:30:15Z
 this.TextBox15.Text = System.DateTime.Now.ToString("u");
 //4月24日
 this.TextBox16.Text = System.DateTime.Now.ToString("m");
 this.TextBox16.Text = System.DateTime.Now.ToString("M");
 //Tue, 24 Apr 2007 16:30:15 GMT
 this.TextBox17.Text = System.DateTime.Now.ToString("r");
 this.TextBox17.Text = System.DateTime.Now.ToString("R");
 //2007年4月 
 this.TextBox19.Text = System.DateTime.Now.ToString("y");
 this.TextBox19.Text = System.DateTime.Now.ToString("Y");
 //2007-04-24T15:52:19.1562500+08:00
 this.TextBox20.Text = System.DateTime.Now.ToString("o");
 this.TextBox20.Text = System.DateTime.Now.ToString("O");
 //2007-04-24T16:30:15
 this.TextBox18.Text = System.DateTime.Now.ToString("s");
 //2007-04-24 15:52:19
 this.TextBox21.Text = System.DateTime.Now.ToString("yyyy-MM-dd HH：mm：ss：ffff");
 //2007年04月24 15时56分48秒
 this.TextBox22.Text = System.DateTime.Now.ToString("yyyy年MM月dd HH时mm分ss秒");

 //星期二, 四月 24 2007
 this.TextBox1.Text = System.DateTime.Now.ToString("dddd, MMMM dd yyyy");
 //二, 四月 24 '07
 this.TextBox2.Text = System.DateTime.Now.ToString("ddd, MMM d \"'\"yy");
 //星期二, 四月 24
 this.TextBox3.Text = System.DateTime.Now.ToString("dddd, MMMM dd");
 //4-07
 this.TextBox4.Text = System.DateTime.Now.ToString("M/yy");
 //24-04-07
 this.TextBox5.Text = System.DateTime.Now.ToString("dd-MM-yy");

字符型转换 转为字符串

12345.ToString("n"); //生成 12,345.00
12345.ToString("C"); //生成 ￥12,345.00
12345.ToString("e"); //生成 1.234500e+004
12345.ToString("f4"); //生成 12345.0000
12345.ToString("x"); //生成 3039 (16进制)
12345.ToString("p"); //生成 1,234,500