string in C #. Format () and ToString () formatting methods

C # Digital format output is something we often need to deal with in programming, so here are some examples of C # Digital formatted output that will make it easier for you to choose and compare, and what is better for your project.

int a = 12345678;

C # number formatted as sring output

Label1.Text = string. Format ("Asdfadsf{0}adsfasdf", a);

Label2.Text = "ASDFADSF" +a.tostring () + "ADSFASDF";

Label1.Text = string. Format ("Asdfadsf{0:c}adsfasdf", a);//ASDFADSF￥1,234.00ADSFASDF

Label2.Text = "ASDFADSF" +a.tostring ("C") + "ADSFASDF";//asdfadsf￥1,234.00adsfasdf

Double b = 1234.12543;

int a = 12345678;

C # number formatted as a special string-style output

Label1.Text = string. Format ("Asdfadsf{0:c}adsfasdf", b);//asdfadsf￥1,234.13adsfasdf

Label2.Text = "ASDFADSF" +b.tostring ("C") + "ADSFASDF";//asdfadsf￥1,234.13adsfasdf

Label1.Text = string. Format ("{0:c3}", b);//￥1,234.125

Label2.Text = b.tostring ("C3");//￥1,234.125

Label1.Text = string. Format ("{0:d}", a);//Decimal--12345678

Label2.Text = b.tostring ("D");//decimal--same type, conversion error

Label1.Text = string. Format ("{0:e}", a);//Index--1.234568e+007

Label2.Text = b.tostring ("e");//Index--1.234125e+003

Label1.Text = string. Format ("{0:f}", a);//fixed-point number--12345678.00

Label2.Text = B.tostring ("f");//fixed-point number--1234.13

Label1.Text = string. Format ("{0:n}", a);//Numeric--12,345,678.00

Label2.Text = B.tostring ("n");//Numeric--1,234.13

Label1.Text = string. Format ("{0:x}", a);//Hex--bc614e

Label2.Text = b.tostring ("x"),//16--with decimal cannot be converted, error

Label1.Text = string. Format ("{0:g}", a);//Universal is the most compact--12345678

Label2.Text = b.tostring ("G");//Universal is the most compact--1234.12543

Label1.Text = string. Format ("{0:r}", a);//round-off without loss of precision-integer not allowed, error

Label2.Text = b.tostring ("R");//no loss of precision--1234.12543

Double b = 4321.12543;

int a = 1234;

C # Digitally formatted custom mode output:

C # Number Format "0" description: Placeholder, if possible, fill bit

Label1.Text = string. Format ("{0:000000}", a);//001234

Label2.Text = string. Format ("{0:000000}", b);//004321

C # number Formatting "#" description: Placeholder, if possible, fill bit

Label1.Text = string. Format ("{0:#######}", a);//1234

Label2.Text = string. Format ("{0:#######}", b);//4321

Label1.Text = string. Format ("{0: #0 # #}", a);//01234

Label2.Text = string. Format ("{0:0#0000}", b);//004321

C # Digital formatting "." Description: decimal point

Label1.Text = string. Format ("{0:000.000}", a);//1234.000

Label2.Text = string. Format ("{0:000.000}", b);//4321.125

Double b = 87654321.12543;

int a = 12345678;

C # number Formatting "," Description: Number grouping, also used for multiplier

Label1.Text = string. Format ("{0:0,00}", a);//12,345,678

Label2.Text = string. Format ("{0:0,00}", b);//87,654,32

Label1.Text = string. Format ("{0:0,}", a);//12346

Label2.Text = string. Format ("{0:0,}", b);//87654

Label1.Text = string. Format ("{0:0,,}", a);//12

Label2.Text = string. Format ("{0:0,,}", b);//88

Label1.Text = string. Format ("{0:0,,,}", a);//0

Label2.Text = string. Format ("{0:0,,,}", b);//0

C # number Formatting "%" Description: Format is percentage

Label1.Text = string. Format ("{0:0%}", a);//1,234,567,800%

Label2.Text = string. Format ("{0:#%}", b);//8,765,432,113%

Label1.Text = string. Format ("{0:0.00%}", a);//1,234,567,800%

Label2.Text = string. Format ("{0:#.00%}", b);//8,765,432,112,.54%

C # Digital formatting "ABC" description: Display text within single quotation marks

Label1.Text = string. Format ("{0: ' text ' 0}", a);//Text 12345678

Label2.Text = string. Format ("{0: Text 0}", b);//Text 87654321

C # number format "\" Description: followed by 1 characters to print the word, also for the transfer character \ n, etc.

Label1.Text = string. Format ("\" Hello!) \ "");//"Hello!" "

Label2.Text = string. Format ("[url=file://\\c\\books\\new\\we.asp]\\c\\books\\new\\we.asp");//\c\books\new\we.asp

C # Number format "@" description: followed by the character to print the word,

Label1.Text = string. Format (@ "" "Hello! """); Hello "To print" you need to enter two pairs to

Label2.Text = string. Format (@ "\c\books\new\we.asp");//\c\books\new\we.asp

string in C #. Format () and ToString () formatting methods