C#中ToString和Formate格式大全

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

 

posted @ 2016-01-04 14:13  vitas2015  阅读(403)  评论(0编辑  收藏  举报