学用 ASP.Net 之 "字符串" (2): string.Format
16lz
2021-04-30
学用 ASP.Net 之 "字符串" (2): string.Format
一般应用与左右对齐:
protected void Button1_Click(object sender, EventArgs e){ TextBox1.TextMode = TextBoxMode.MultiLine; string str; str = string.Format("***{0}***{1}***", "ASP.Net", 3.5); TextBox1.Text += str + "\n"; //***ASP.Net***3.5*** str = string.Format("*{0,10}*", "asp"); TextBox1.Text += str + "\n"; //* asp* str = string.Format("*{0,-10}*", "asp"); TextBox1.Text += str + "\n"; //*asp * TextBox1.Text += string.Format("{0,3} : {1,-3}\n", "BC", 123); // BC : 123 TextBox1.Text += string.Format("{0,3} : {1,-3}\n", "C", 12); // C : 12 TextBox1.Text += string.Format("{0,3} : {1,-3}\n", "ABC", 1); //ABC : 1 }标准数字格式:
protected void Button1_Click(object sender, EventArgs e){ string s1,s2,s3,s4,s5,s6,s7,s8,s9,s0; double num = 2.5; s1 = string.Format("Cc {0:c}", num); //Cc ¥2.50 s2 = string.Format("Dd {0:d}", (int)num); //Dd 2 s3 = string.Format("E {0:E}", num); //E 2.500000E+000 s4 = string.Format("e {0:e}", num); //e 2.500000e+000 s5 = string.Format("Ff {0:f}", num); //Ff 2.50 s6 = string.Format("Gg {0:g}", num); //Gg 2.5 s7 = string.Format("Nn {0:n}", num); //Nn 2.50 s8 = string.Format("Pp {0:p}", num); //Pp 250.00% s9 = string.Format("Rr {0:r}", num); //Rr 2.5 s0 = string.Format("Xx {0:x}", (int)num); //Xx 2 string br = "\n"; TextBox1.Text = string.Concat(s1, br, s2, br, s3, br, s4, br, s5, br, s6, br, s7, br, s8, br, s9, br, s0);}标准数字格式的精度:
protected void Button1_Click(object sender, EventArgs e){ string s1,s2,s3,s4,s5,s6,s7,s8,s9,s0; double num = 2.5; s1 = string.Format("Cc {0:c3}", num); //Cc ¥2.500 s2 = string.Format("Dd {0:d3}", (int)num); //Dd 002 s3 = string.Format("E {0:E3}", num); //E 2.500E+000 s4 = string.Format("e {0:e3}", num); //e 2.500e+000 s5 = string.Format("Ff {0:f3}", num); //Ff 2.500 s6 = string.Format("Gg {0:g3}", num); //Gg 2.5 s7 = string.Format("Nn {0:n3}", num); //Nn 2.500 s8 = string.Format("Pp {0:p3}", num); //Pp 250.000% s9 = string.Format("Rr {0:r3}", num); //Rr 2.5 s0 = string.Format("Xx {0:x3}", (int)num); //Xx 002 string br = "\n"; TextBox1.Text = string.Concat(s1, br, s2, br, s3, br, s4, br, s5, br, s6, br, s7, br, s8, br, s9, br, s0);}自定义的数字格式:
protected void Button1_Click(object sender, EventArgs e){ string s1,s2,s3,s4,s5,s6,s7,s8,s9,s0; double num = -1234.567; s1 = string.Format("{0:000000.00}", num); //-001234.57 s2 = string.Format("{0:######.##}", num); //-1234.57 s3 = string.Format("{0:#,#.####}", num); //-1,234.567 s4 = string.Format("{0:0,0.0000}", num); //-1,234.5670 s5 = string.Format("{0:######.000000}", num); //-1234.567000 s6 = string.Format("{0:000000.######}", num); //-001234.567 s7 = string.Format("{0:#.00%}", num); //-123456.70% s8 = string.Format("{0:%#.00}", num); //-%123456.70 s9 = string.Format("{0:(+|0)#.#;(-)#.#}", num); //(-)1234.6 s0 = string.Format("{0:(+)#.#;(-)#.#;(0)}", num); //(-)1234.6 string br = "\n"; TextBox1.Text = string.Concat(s1, br, s2, br, s3, br, s4, br, s5, br, s6, br, s7, br, s8, br, s9, br, s0);}标准日期和时间格式:
protected void Button1_Click(object sender, EventArgs e){ string[] arr = new string[16]; DateTime dt = new DateTime(2011, 1, 2, 13, 24, 56, 789); arr[0] = string.Format(" {0}", dt); // 2011/1/2 13:24:56 arr[1] = string.Format("d {0:d}", dt); //d 2011/1/2 arr[2] = string.Format("D {0:D}", dt); //D 2011年1月2日 arr[3] = string.Format("f {0:f}", dt); //f 2011年1月2日 13:24 arr[4] = string.Format("F {0:F}", dt); //F 2011年1月2日 13:24:56 arr[5] = string.Format("g {0:g}", dt); //g 2011/1/2 13:24 arr[6] = string.Format("G {0:G}", dt); //G 2011/1/2 13:24:56 arr[7] = string.Format("Mm {0:m}", dt); //Mm 1月2日 arr[8] = string.Format("Oo {0:o}", dt); //Oo 2011-01-02T13:24:56.7890000 arr[9] = string.Format("Rr {0:r}", dt); //Rr Sun, 02 Jan 2011 13:24:56 GMT arr[10] = string.Format("s {0:s}", dt); //s 2011-01-02T13:24:56 arr[11] = string.Format("t {0:t}", dt); //t 13:24 arr[12] = string.Format("T {0:T}", dt); //T 13:24:56 arr[13] = string.Format("u {0:u}", dt); //u 2011-01-02 13:24:56Z arr[14] = string.Format("U {0:U}", dt); //U 2011年1月2日 5:24:56 arr[15] = string.Format("Yy {0:y}", dt); //Yy 2011年1月 string str = ""; foreach (string s in arr) { str += s + "\n"; } TextBox1.Text = str;}自定义的日期和时间格式:
protected void Button1_Click(object sender, EventArgs e){ string [] arr = new string[44]; DateTime dt = new DateTime(2011, 1, 2, 13, 24, 56, 789); arr[0] = string.Format("d {0:d}", dt); //d 2011/1/2 arr[1] = string.Format("dd {0:dd}", dt); //dd 02 arr[2] = string.Format("ddd {0:ddd}", dt); //ddd 周日 arr[3] = string.Format("dddd {0:dddd}", dt); //dddd 星期日 arr[4] = string.Format("f {0:f}", dt); //f 2011年1月2日 13:24 arr[5] = string.Format("ff {0:ff}", dt); //ff 78 arr[6] = string.Format("fff {0:fff}", dt); //fff 789 arr[7] = string.Format("ffff {0:ffff}", dt); //ffff 7890 arr[8] = string.Format("fffff {0:fffff}", dt); //fffff 78900 arr[9] = string.Format("ffffff {0:ffffff}", dt); //ffffff 789000 arr[10] = string.Format("fffffff {0:fffffff}", dt); //fffffff 7890000 arr[11] = string.Format("F {0:F}", dt); //F 2011年1月2日 13:24:56 arr[12] = string.Format("FF {0:FF}", dt); //FF 78 arr[13] = string.Format("FFF {0:FFF}", dt); //FFF 789 arr[14] = string.Format("FFFF {0:FFFF}", dt); //FFFF 789 arr[15] = string.Format("FFFFF {0:FFFFF}", dt); //FFFFF 789 arr[16] = string.Format("FFFFFF {0:FFFFFF}", dt); //FFFFFF 789 arr[17] = string.Format("FFFFFFF {0:FFFFFFF}", dt); //FFFFFFF 789 arr[18] = string.Format("g {0:g}", dt); //g 2011/1/2 13:24 arr[19] = string.Format("h {0:%h}", dt); //h 1 arr[20] = string.Format("hh {0:hh}", dt); //hh 01 arr[21] = string.Format("H {0:%H}", dt); //H 13 arr[22] = string.Format("HH {0:HH}", dt); //HH 13 arr[23] = string.Format("K {0:%K}", dt); //K arr[24] = string.Format("m {0:m}", dt); //m 1月2日 arr[25] = string.Format("mm {0:mm}", dt); //mm 24 arr[26] = string.Format("M {0:M}", dt); //M 1月2日 arr[27] = string.Format("MM {0:MM}", dt); //MM 01 arr[28] = string.Format("MMM {0:MMM}", dt); //MMM 一月 arr[29] = string.Format("MMMM {0:MMMM}", dt); //MMMM 一月 arr[30] = string.Format("s {0:s}", dt); //s 2011-01-02T13:24:56 arr[31] = string.Format("ss {0:ss}", dt); //ss 56 arr[32] = string.Format("t {0:t}", dt); //t 13:24 arr[33] = string.Format("tt {0:tt}", dt); //tt 下午 arr[34] = string.Format("y {0:y}", dt); //y 2011年1月 arr[35] = string.Format("yy {0:yy}", dt); //yy 11 arr[36] = string.Format("yyy {0:yyy}", dt); //yyy 2011 arr[37] = string.Format("yyyy {0:yyyy}", dt); //yyyy 2011 arr[38] = string.Format("yyyyy {0:yyyyy}", dt); //yyyyy 02011 arr[39] = string.Format("z {0:%z}", dt); //z +8 arr[40] = string.Format("zz {0:zz}", dt); //zz +08 arr[41] = string.Format("zzz {0:zzz}", dt); //zzz +08:00 arr[42] = string.Format("{0:yyyy年MM月dd日 HH时mm分ss秒}", dt); //2011年01月02日 13时24分56秒 arr[43] = string.Format("{0:yyyy/M/d H:m:s}", dt); //2011/1/2 13:24:56 string str = ""; foreach (string s in arr) { str += s + "\n"; } TextBox1.Text = str;}按区域格式化:
// 需 using System.Globalization;protected void Button1_Click(object sender, EventArgs e){ string s1, s2, s3, s4, s5, s6, s7, s8, s9, s0; double num = 2.5; DateTime dt = new DateTime(2011, 1, 2, 13, 24, 56, 789); s1 = string.Format("{0:c}", num); //¥2.50 s2 = string.Format(new CultureInfo("en-US"), "{0:c}", num); //$2.50 s3 = string.Format(new CultureInfo("fr-FR"), "{0:c}", num); //2,50 € s4 = string.Format(new CultureInfo("it-IT"), "{0:c}", num); //€ 2,50 s5 = string.Format(new CultureInfo("de-DE"), "{0:c}", num); //2,50 € s6 = string.Format("{0,-5:ddd}\t{0:dddd}", dt); //周日 星期日 s7 = string.Format(new CultureInfo("en-US"), "{0,-5:ddd}\t{0:dddd}", dt); //Sun Sunday s8 = string.Format(new CultureInfo("fr-FR"), "{0,-5:ddd}\t{0:dddd}", dt); //dim. dimanche s9 = string.Format(new CultureInfo("it-IT"), "{0,-5:ddd}\t{0:dddd}", dt); //dom domenica s0 = string.Format(new CultureInfo("de-DE"), "{0,-5:ddd}\t{0:dddd}", dt); //So Sonntag string br = "\n"; TextBox1.Text = string.Concat(s1, br, s2, br, s3, br, s4, br, s5, br, s6, br, s7, br, s8, br, s9, br, s0);}posted on 2010-12-30 00:07 万一 阅读(1547) 评论(5) 编辑 收藏©著作权归作者所有：来自51CTO博客作者JLee79的原创作品，如需转载，请注明出处，否则将追究法律责任
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