[CSharp] number formatting output

Int a = 12345678;
// Output in the sring format
// Label1.Text = string. Format ("asdfadsf {0} adsfasdf", );
// Label2.Text = "asdfadsf" + a. ToString () + "adsfasdf ";
// Label1.Text = string. Format ("asdfadsf {0: C} adsfasdf", a); // asdfadsf ￥1,234.00 adsfasdf
// Label2.Text = "asdfadsf" + a. ToString ("C") + "adsfasdf"; // asdfadsf ¥0. 1,234.00 adsfasdf

Double B = 1234.12543;
A = 12345678;
// Output in special string format
// Label1.Text = string. Format ("asdfadsf {0: C} adsfasdf", B); // asdfadsf ￥1,234.13 adsfasdf
// Label2.Text = "asdfadsf" + B. ToString ("C") + "adsfasdf"; // asdfadsf ¥0. 1,234.13 adsfasdf
// 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); // in decimal Format -- 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); // set the number of points -- 12345678.00
// Label2.Text = B. ToString ("f"); // set the number of points -- 1234.13
// Label1.Text = string. Format ("{0: n}", a); // value -- 12,345,678.00
// Label2.Text = B. ToString ("n"); // value -- 1,234.13
// Label1.Text = string. Format ("{0: x}", a); // hexadecimal -- bc614e
// Label2.Text = B. ToString ("x"); // 16 -- cannot be converted with decimals, error
// Label1.Text = string. Format ("{0: g}", a); // use the most compact mode -- 12345678
// Label2.Text = B. ToString ("g"); // use the most compact version -- 1234.12543
// Label1.Text = string. Format ("{0: r}", a); // transfer without loss of precision -- integers are not allowed and an error is returned.
// Label2.Text = B. ToString ("r"); // transfer without loss of precision -- 1234.12543

B = 4321.12543;
A = 1234;
// Custom mode output:
// 0 Description: placeholder. If possible, fill the position
// Label1.Text = string. Format ("{0: 00}", a); // 001234
// Label2.Text = string. Format ("{0: 00}", B); // 004321
// # Description: placeholder. If possible, it indicates the filling space.
// 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 #0000}", B); // 004321

//. Description: decimal point
// Label1.Text = string. Format ("{0: 000. 000}", a); // 1234.000
// Label2.Text = string. Format ("{0: 000. 000}", B); // 4321.125
B = 87654321.12543;
A = 12345678;
//, Description: Numeric grouping, also used for the Multiplier
// Label1.Text = string. Format ("{0, 00}", a); // 12,345,678
// Label2.Text = string. Format ("{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
// % Description: The format is percent.
// Label1.Text = string. Format ("{0%}", a); // 1234567800%
// Label2.Text = string. Format ("{0: # %}", B); // 8765432113%
// Label1.Text = string. Format ("{0. 00%}", a); // 1234567800.00%
// Label2.Text = string. Format ("{0: #. 00%}", B); // 8765432112.54%
// 'Abc' Description: displays the text in single quotes.
// Label1.Text = string. Format ("{0: 'text' 0}", a); // text 12345678
// Label2.Text = string. Format ("{0: Text 0}", B); // text 87654321
// \ Description: it is followed by a character that needs to be printed. It is also used for escape characters, such as \ n.
// Label1.Text = string. Format ("\" Hello! \ ""); // "Hello! "
// Label2.Text = string. Format ("\ c \ books \ new \ we. asp"); // \ c \ books \ new \ we. asp
// @ Description: followed by the characters to be printed,
// Label1.Text = string. Format (@ "Hello! "); //" Hello! "Print" requires two pairs.
// Label2.Text = string. Format (@ "\ c \ books \ new \ we. asp"); // \ c \ books \ new \ we. asp