1 DateTime birthdate = new DateTime(1993, 7, 28);
2 //{0}中的0表述格式项的索引，有几个格式项就有几个索引，数字从0开始。
3 string birth = string.Format("date is {0}", birthdate.ToLongDateString());
4 Console.Write(birth);
5 Console.ReadLine();
6 //  示例显示如下输出:
7 // date is 1993年7月28日

 1 DateTime date1 = new DateTime(2009, 7, 1);
 2 TimeSpan hiTime = new TimeSpan(14, 17, 32);
 3 TimeSpan loTime = new TimeSpan(3, 16, 10);
 4 /**
 5              * {0:d}中的d表示格式项转化为十进制 
 6              * {1,11}中的11第二个对象的字符串表示形式在11个字符的字段中右对齐。 
 7              * (如果第一个对象的字符串表示形式的长度超过11个字符, 则将忽略首选字段宽度, 
 8              * 并将整个字符串插入到结果字符串中。)
 9              * */
10 string result1 = String.Format("Temperature on {0:d}:n{1,11}: {2} degrees (hi)n",
11                                            date1, hiTime,loTime);
12             Console.WriteLine(result1);
13             Console.WriteLine();
14             //若要在字段中左对齐字符串, 请在字段宽度前面加上负号, 如{0,-12}定义12个字符左对齐字段。
15             string result2 = String.Format("Temperature on {0:d}:n{1,-12}: {2} degrees (hi)n",
16                                            new object[] { date1, hiTime, loTime});
17             Console.WriteLine(result2);
18             //  示例显示如下输出:
19             //Temperature on 2009 / 7 / 1:
20             //14:17:32: 03:16:10 degrees(hi)
21             //Temperature on 2009 / 7 / 1:
22             //14:17:32    : 03:16:10 degrees(hi)
23             Console.ReadLine();

string[] cultureNames = { "en-US", "fr-FR", "de-DE", "es-ES" };

DateTime dateToDisplay = new DateTime(2009, 9, 1, 18, 32, 0);
double value = 9164.32;

Console.WriteLine("Culture     Date                                Value\n");
foreach (string cultureName in cultureNames)
{
   System.Globalization.CultureInfo culture = new System.Globalization.CultureInfo(cultureName);
   string output = String.Format(culture, "{0,-11} {1,-35:D} {2:N}", 
                                 culture.Name, dateToDisplay, value);
   Console.WriteLine(output);
}    
// 示例显示如下输出:
//    Culture     Date                                Value
//    
//    en-US       Tuesday, September 01, 2009         9,164.32
//    fr-FR       mardi 1 septembre 2009              9 164,32
//    de-DE       Dienstag, 1. September 2009         9.164,32
//    es-ES       martes, 01 de septiembre de 2009    9.164,32

 1 Dictionary<DateTime, Double> temperatureInfo = new Dictionary<DateTime, Double>(); 
 2 temperatureInfo.Add(new DateTime(2010, 6, 1, 14, 0, 0), 87.46);
 3 temperatureInfo.Add(new DateTime(2010, 12, 1, 10, 0, 0), 36.81);
 4 
 5 Console.WriteLine("Temperature Information:\n");
 6 string output;   
 7 foreach (var item in temperatureInfo)
 8 {
 9    output = String.Format("Temperature at {0,8:t} on {0,9:d}: {1,5:N1}°F", 
10                           item.Key, item.Value);
11    Console.WriteLine(output);
12 }
13 // The example displays output like the following:
14 //       Temperature Information:
15 //       
16 //       Temperature at  2:00 PM on  6/1/2010:  87.5°F
17 //       Temperature at 10:00 AM on 12/1/2010:  36.8°F

 1 string formatString = "    {0,10} ({0,8:X8})\n" + 
 2                       "And {1,10} ({1,8:X8})\n" + 
 3                       "  = {2,10} ({2,8:X8})";
 4 int value1 = 16932;
 5 int value2 = 15421;
 6 string result = String.Format(formatString, 
 7                               value1, value2, value1 & value2);
 8 Console.WriteLine(result);
 9 // The example displays the following output:
10 //                16932 (00004224)
11 //       And      15421 (00003C3D)
12 //         =         36 (00000024)