本文整理汇总了C#中System.String.ToUpper方法的典型用法代码示例。如果您正苦于以下问题：C# String.ToUpper方法的具体用法？C# String.ToUpper怎么用？C# String.ToUpper使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.String的用法示例。
在下文中一共展示了String.ToUpper方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Main
//引入命名空间
using System;
using System.Globalization;
class Example
{
public static void Main()
{
string str1 = "indigo";
string str2, str3;
// str2 is an uppercase copy of str1, using English-United States culture.
str2 = str1.ToUpper(new CultureInfo("en-US", false));
// str3 is an uppercase copy of str1, using Turkish-Turkey culture.
str3 = str1.ToUpper(new CultureInfo("tr-TR", false));
// Compare the code points and compare the uppercase strings.
ShowCodePoints("str1", str1);
ShowCodePoints("str2", str2);
ShowCodePoints("str3", str3);
Console.WriteLine("str2 is {0} to str3.",
String.CompareOrdinal(str2, str3) == 0 ? "equal" : "not equal");
}
public static void ShowCodePoints(string varName, string s)
{
Console.Write("{0} = {1}: ", varName, s);
foreach (ushort u in s)
Console.Write("{0:x4} ", u);
Console.WriteLine();
}
}输出：
str1 = indigo: 0069 006e 0064 0069 0067 006f str2 = INDIGO: 0049 004e 0044 0049 0047 004f str3 = INDIGO: 0130 004e 0044 0130 0047 004f str2 is not equal to str3.
示例2: Main
//引入命名空间
using System;
public class Example
{
public static void Main()
{
int n = 0;
for (int ctr = 0x20; ctr <= 0x017F; ctr++) {
string string1 = Convert.ToChar(ctr).ToString();
string upperString = string1.ToUpper();
if (string1 != upperString) {
Console.Write(@"{0} (\u+{1}) --> {2} (\u+{3}) ",
string1,
Convert.ToUInt16(string1[0]).ToString("X4"),
upperString,
Convert.ToUInt16(upperString[0]).ToString("X4"));
n++;
if (n % 2 == 0) Console.WriteLine();
}
}
}
}输出：
a (\u+0061) --> A (\u+0041) b (\u+0062) --> B (\u+0042) c (\u+0063) --> C (\u+0043) d (\u+0064) --> D (\u+0044) e (\u+0065) --> E (\u+0045) f (\u+0066) --> F (\u+0046) g (\u+0067) --> G (\u+0047) h (\u+0068) --> H (\u+0048) i (\u+0069) --> I (\u+0049) j (\u+006A) --> J (\u+004A) k (\u+006B) --> K (\u+004B) l (\u+006C) --> L (\u+004C) m (\u+006D) --> M (\u+004D) n (\u+006E) --> N (\u+004E) o (\u+006F) --> O (\u+004F) p (\u+0070) --> P (\u+0050) q (\u+0071) --> Q (\u+0051) r (\u+0072) --> R (\u+0052) s (\u+0073) --> S (\u+0053) t (\u+0074) --> T (\u+0054) u (\u+0075) --> U (\u+0055) v (\u+0076) --> V (\u+0056) w (\u+0077) --> W (\u+0057) x (\u+0078) --> X (\u+0058) y (\u+0079) --> Y (\u+0059) z (\u+007A) --> Z (\u+005A) à (\u+00E0) --> À (\u+00C0) á (\u+00E1) --> Á (\u+00C1) â (\u+00E2) -->  (\u+00C2) ã (\u+00E3) --> à (\u+00C3) ä (\u+00E4) --> Ä (\u+00C4) å (\u+00E5) --> Å (\u+00C5) æ (\u+00E6) --> Æ (\u+00C6) ç (\u+00E7) --> Ç (\u+00C7) è (\u+00E8) --> È (\u+00C8) é (\u+00E9) --> É (\u+00C9) ê (\u+00EA) --> Ê (\u+00CA) ë (\u+00EB) --> Ë (\u+00CB) ì (\u+00EC) --> Ì (\u+00CC) í (\u+00ED) --> Í (\u+00CD) î (\u+00EE) --> Î (\u+00CE) ï (\u+00EF) --> Ï (\u+00CF) ð (\u+00F0) --> Ð (\u+00D0) ñ (\u+00F1) --> Ñ (\u+00D1) ò (\u+00F2) --> Ò (\u+00D2) ó (\u+00F3) --> Ó (\u+00D3) ô (\u+00F4) --> Ô (\u+00D4) õ (\u+00F5) --> Õ (\u+00D5) ö (\u+00F6) --> Ö (\u+00D6) ø (\u+00F8) --> Ø (\u+00D8) ù (\u+00F9) --> Ù (\u+00D9) ú (\u+00FA) --> Ú (\u+00DA) û (\u+00FB) --> Û (\u+00DB) ü (\u+00FC) --> Ü (\u+00DC) ý (\u+00FD) --> Ý (\u+00DD) þ (\u+00FE) --> Þ (\u+00DE) ÿ (\u+00FF) --> Ÿ (\u+0178) ā (\u+0101) --> Ā (\u+0100) ă (\u+0103) --> Ă (\u+0102) ą (\u+0105) --> Ą (\u+0104) ć (\u+0107) --> Ć (\u+0106) ĉ (\u+0109) --> Ĉ (\u+0108) ċ (\u+010B) --> Ċ (\u+010A) č (\u+010D) --> Č (\u+010C) ď (\u+010F) --> Ď (\u+010E) đ (\u+0111) --> Đ (\u+0110) ē (\u+0113) --> Ē (\u+0112) ĕ (\u+0115) --> Ĕ (\u+0114) ė (\u+0117) --> Ė (\u+0116) ę (\u+0119) --> Ę (\u+0118) ě (\u+011B) --> Ě (\u+011A) ĝ (\u+011D) --> Ĝ (\u+011C) ğ (\u+011F) --> Ğ (\u+011E) ġ (\u+0121) --> Ġ (\u+0120) ģ (\u+0123) --> Ģ (\u+0122) ĥ (\u+0125) --> Ĥ (\u+0124) ħ (\u+0127) --> Ħ (\u+0126) ĩ (\u+0129) --> Ĩ (\u+0128) ī (\u+012B) --> Ī (\u+012A) ĭ (\u+012D) --> Ĭ (\u+012C) į (\u+012F) --> Į (\u+012E) ı (\u+0131) --> I (\u+0049) ij (\u+0133) --> IJ (\u+0132) ĵ (\u+0135) --> Ĵ (\u+0134) ķ (\u+0137) --> Ķ (\u+0136) ĺ (\u+013A) --> Ĺ (\u+0139) ļ (\u+013C) --> Ļ (\u+013B) ľ (\u+013E) --> Ľ (\u+013D) ŀ (\u+0140) --> Ŀ (\u+013F) ł (\u+0142) --> Ł (\u+0141) ń (\u+0144) --> Ń (\u+0143) ņ (\u+0146) --> Ņ (\u+0145) ň (\u+0148) --> Ň (\u+0147) ŋ (\u+014B) --> Ŋ (\u+014A) ō (\u+014D) --> Ō (\u+014C) ŏ (\u+014F) --> Ŏ (\u+014E) ő (\u+0151) --> Ő (\u+0150) œ (\u+0153) --> Œ (\u+0152) ŕ (\u+0155) --> Ŕ (\u+0154) ŗ (\u+0157) --> Ŗ (\u+0156) ř (\u+0159) --> Ř (\u+0158) ś (\u+015B) --> Ś (\u+015A) ŝ (\u+015D) --> Ŝ (\u+015C) ş (\u+015F) --> Ş (\u+015E) š (\u+0161) --> Š (\u+0160) ţ (\u+0163) --> Ţ (\u+0162) ť (\u+0165) --> Ť (\u+0164) ŧ (\u+0167) --> Ŧ (\u+0166) ũ (\u+0169) --> Ũ (\u+0168) ū (\u+016B) --> Ū (\u+016A) ŭ (\u+016D) --> Ŭ (\u+016C) ů (\u+016F) --> Ů (\u+016E) ű (\u+0171) --> Ű (\u+0170) ų (\u+0173) --> Ų (\u+0172) ŵ (\u+0175) --> Ŵ (\u+0174) ŷ (\u+0177) --> Ŷ (\u+0176) ź (\u+017A) --> Ź (\u+0179) ż (\u+017C) --> Ż (\u+017B) ž (\u+017E) --> Ž (\u+017D)
示例3: String.ToUpper()
//引入命名空间
using System;
class MainClass {
public static void Main() {
string str1 = "ABCDEabcde1234567890";
string strLow = str1.ToLower();
string strUp = str1.ToUpper();
Console.WriteLine("Lowercase version of str1:\n " + strLow);
Console.WriteLine("Uppercase version of str1:\n " + strUp);
}
}