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  • 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
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  • 原文地址:https://www.cnblogs.com/vitas/p/5098777.html
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