C#中ToString格式大全
stringstr1 =string.Format("{0:N1}",56789); //result: 56,789.0 stringstr2 =string.Format("{0:N2}",56789); //result: 56,789.00 stringstr3 =string.Format("{0:N3}",56789); //result: 56,789.000 stringstr8 =string.Format("{0:F1}",56789); //result: 56789.0 stringstr9 =string.Format("{0:F2}",56789); //result: 56789.00 stringstr11 =(56789 / 100.0).ToString("#.##"); //result: 567.89 stringstr12 =(56789 / 100).ToString("#.##"); //result: 567
C 或 c
货币
Console.Write("{0:C}", 2.5); //$2.50 Console.Write("{0:C}", -2.5); //($2.50)
D 或 d
十进制数
Console.Write("{0:D5}", 25); //00025
E 或 e
科学型
Console.Write("{0:E}", 250000); //2.500000E+005
F 或 f
固定点
Console.Write("{0:F2}", 25); //25.00 Console.Write("{0:F0}", 25); //25
G 或 g
常规
Console.Write("{0:G}", 2.5); //2.5
N 或 n
数字
Console.Write("{0:N}", 2500000); //2,500,000.00
X 或 x
十六进制
Console.Write("{0:X}", 250); //FA Console.Write("{0:X}", 0xffff); //FFFF
常用格式举例:
(1)
int i=12345; this.textBox1.Text=i.ToString(); //结果 12345(this指当前对象,或叫当前类的实例) this.textBox2.Text=i.ToString("d8"); //结果 00012345
(2)
int i=123; double j=123.45; string s1=string.Format("the value is {0,7:d}",i); string s2=string.Format("the value is {0,7:f3}",j); this.textBox1.Text=s1 ; //结果 the value is 123 this.textBox2.Text=s2; //结果 the value is 123.450
(3)
double i=12345.6789; this.textBox1.Text=i.ToString("f2"); //结果 12345.68 this.textBox2.Text=i.ToString("f6"); //结果 12345.678900
(4)
double i=12345.6789; this.textBox1.Text=i.ToString("n"); //结果 12,345.68 this.textBox2.Text=i.ToString(“n4”); //结果 12,345.6789
(5)
double i=0.126; string s=string.Format("the value is {0:p}",i); this.textBox1.Text=i.ToString("p"); //结果 12.6% this.textBox2.Text=s; //结果 the value is 12.6%
(6)
DateTime dt =new DateTime(2003,5,25); this.textBox1.Text=dt.ToString("yy.M.d"); //结果 03.5.25 this.textBox2.Text=dt.ToString(“yyyy年M月”); //结果 2003年5月 Convert.ToDateTime("2005/12/22 22:22:22").ToString("yyyy/MM/dd HH");
(7)
int i=123; double j=123.45; string s=string.Format("i:{0,-7},j:{1,7}",i,j); //-7表示左对齐,占7位 this.textBox1.Text=s ; //结果i:123 ,j: 123.45