Csharp/C Sharp by API/System/String
Содержание
- 1 new String(char[] charArray)
- 2 String.Compare(String value1, String value2)
- 3 String.Compare(String value1, String value2, boolean case)
- 4 String.Concat(String value1, String value2)
- 5 String.Contains
- 6 String.Copy(String value)
- 7 String.Empty
- 8 String.EndsWith()
- 9 String.Equals(String aString)
- 10 String.Format(String format, Float aFloat);
- 11 String.IndexOf
- 12 String.IndexOfAny(char[] myChars)
- 13 String.Insert(int index, String value)
- 14 String.Join(String join, String value)
- 15 String.LastIndexOf
- 16 String.LastIndexOfAny(char[] myChars)
- 17 String.Length
- 18 String.PadLeft(int len)
- 19 String.PadLeft(int len, char ch)
- 20 String.PadRight(int len)
- 21 String.PadRight(int len, char ch)
- 22 String.Remove(int start, int end)
- 23 String.Replace(char ch, char ch2)
- 24 String.Replace(String value1, String value2)
- 25 String.Split(String splittor)
- 26 String.StartsWith()
- 27 String == String
- 28 String.SubString(int pos)
- 29 String.SubString(int start,)
- 30 String.ToCharArray
- 31 String.ToCharArray(int start,)
- 32 String.ToLower()
- 33 String.ToUpper()
- 34 String.Trim()
- 35 String.TrimEnd()
- 36 String.TrimStart()
new String(char[] charArray)
<source lang="csharp">
using System;
class MainClass {
public static void Main() { char[] charray = {"A", " ", "s", "t", "r", "i", "n", "g", "." }; string str1 = new string(charray); string str2 = "Another string."; Console.WriteLine(str1); Console.WriteLine(str2); }
}
</source>
String.Compare(String value1, String value2)
<source lang="csharp"> using System; class MainClass {
public static void Main() { int result; result = String.rupare("bbc", "abc"); Console.WriteLine("String.rupare(\"bbc\", \"abc\") = " + result); result = String.rupare("abc", "bbc"); Console.WriteLine("String.rupare(\"abc\", \"bbc\") = " + result); result = String.rupare("bbc", "bbc"); Console.WriteLine("String.rupare(\"bbc\", \"bbc\") = " + result); result = String.rupare("bbc", "BBC", true); Console.WriteLine("String.rupare(\"bbc\", \"BBC\", true) = " + result); result = String.rupare("bbc", "BBC", false); Console.WriteLine("String.rupare(\"bbc\", \"BBC\", false) = " + result); result = String.rupare("Hello World", 6, "Goodbye World", 8, 5); Console.WriteLine("String.rupare(\"Hello World\", 6, " + "\"Goodbye World\", 8, 5) = " + result); }
}
</source>
String.Compare(String value1, String value2, boolean case)
<source lang="csharp"> using System; class MainClass {
public static void Main() { int result; result = String.rupare("bbc", "abc"); Console.WriteLine("String.rupare(\"bbc\", \"abc\") = " + result); result = String.rupare("abc", "bbc"); Console.WriteLine("String.rupare(\"abc\", \"bbc\") = " + result); result = String.rupare("bbc", "bbc"); Console.WriteLine("String.rupare(\"bbc\", \"bbc\") = " + result); result = String.rupare("bbc", "BBC", true); Console.WriteLine("String.rupare(\"bbc\", \"BBC\", true) = " + result); result = String.rupare("bbc", "BBC", false); Console.WriteLine("String.rupare(\"bbc\", \"BBC\", false) = " + result); result = String.rupare("Hello World", 6, "Goodbye World", 8, 5); Console.WriteLine("String.rupare(\"Hello World\", 6, " + "\"Goodbye World\", 8, 5) = " + result); }
}
</source>
String.Concat(String value1, String value2)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string myString4 = String.Concat("A, ", "B"); Console.WriteLine("String.Concat(\"A, \", \"B\") = "+ myString4); string myString5 = String.Concat("A, ", "B, ", "and countrymen"); Console.WriteLine("String.Concat(\"A, \", \"B, \", " + "\"and countrymen\") = " + myString5); }
}
</source>
String.Contains
<source lang="csharp"> using System;
class MainClass {
public static void Main() { string str = "abcdefghijk"; if(str.Contains("def")) Console.WriteLine("The sequence "def" was found."); }
}
</source>
String.Copy(String value)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string myString4 = "string4"; Console.WriteLine("myString4 = " + myString4); Console.WriteLine("Copying myString4 to myString7 using Copy()"); string myString7 = String.Copy(myString4); Console.WriteLine("myString7 = " + myString7); }
}
</source>
String.Empty
<source lang="csharp"> using System; using System.IO; using System.Text; public class MainClass {
public static void Main(string[] args) { string address = String.Empty; }
}
</source>
String.EndsWith()
<source lang="csharp">
using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not","to", "be"}; string myString = String.Join(".", myStrings); Console.WriteLine("myString = " + myString); if (myString.StartsWith("To")) { Console.WriteLine("myString starts with \"To\""); } if (myString.EndsWith("be")) { Console.WriteLine("myString ends with \"be\""); } }
}
</source>
String.Equals(String aString)
<source lang="csharp"> using System; class MainClass {
public static void Main() { bool boolResult; string myString = "str"; string myString2 = "str2"; boolResult = String.Equals("bbc", "bbc"); Console.WriteLine("String.Equals(\"bbc\", \"bbc\") is " + boolResult); boolResult = myString.Equals(myString2); Console.WriteLine("myString.Equals(myString2) is " + boolResult); boolResult = myString == myString2; Console.WriteLine("myString == myString2 is " + boolResult); }
}
</source>
String.Format(String format, Float aFloat);
<source lang="csharp"> using System; class MainClass {
public static void Main() { float myFloat = 1234.56789f; string myString8 = String.Format("{0, 10:f3}", myFloat); Console.WriteLine("String.Format(\"{0, 10:f3}\", myFloat) = " + myString8); }
}
</source>
String.IndexOf
<source lang="csharp">
using System;
public class StringSearchDemo {
public static void Main() { string str = "C# has powerful string handling."; int idx; Console.WriteLine("str: " + str); idx = str.IndexOf("h"); Console.WriteLine("Index of first "h": " + idx); idx = str.LastIndexOf("h"); Console.WriteLine("Index of last "h": " + idx); idx = str.IndexOf("ing"); Console.WriteLine("Index of first \"ing\": " + idx); idx = str.LastIndexOf("ing"); Console.WriteLine("Index of last \"ing\": " + idx); char[] chrs = { "a", "b", "c" }; idx = str.IndexOfAny(chrs); Console.WriteLine("Index of first "a", "b", or "c": " + idx); if(str.StartsWith("C# has")) Console.WriteLine("str begins with \"C# has\""); if(str.EndsWith("ling.")) Console.WriteLine("str ends with \"ling.\""); }
}
</source>
String.IndexOfAny(char[] myChars)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not", "to", "be"}; string myString = String.Join(".", myStrings); char[] myChars = {"b", "e"}; int index = myString.IndexOfAny(myChars); Console.WriteLine(""b" and "e" occur at index " + index + " of myString"); index = myString.LastIndexOfAny(myChars); Console.WriteLine(""b" and "e" last occur at index " + index + " of myString"); }
}
</source>
String.Insert(int index, String value)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not", "to", "be"}; string myString = String.Join(".", myStrings); string myString10 = myString.Insert(6, "A, "); Console.WriteLine("myString.Insert(6, \"A, \") = " + myString10); string myString11 = myString10.Remove(14, 7); Console.WriteLine("myString10.Remove(14, 7) = " + myString11); string myString12 = myString11.Replace(",", "?"); Console.WriteLine("myString11.Replace(",", "?") = " + myString12); string myString13 = myString12.Replace("to be", "Or not to be A"); Console.WriteLine("myString12.Replace(\"to be\", \"Or not to be A\") = " + myString13); }
}
</source>
String.Join(String join, String value)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not", "to", "be"}; string myString9 = String.Join(".", myStrings); Console.WriteLine("myString9 = " + myString9); }
}
</source>
String.LastIndexOf
<source lang="csharp"> using System;
public class StringSearchDemo {
public static void Main() { string str = "C# has powerful string handling."; int idx; Console.WriteLine("str: " + str); idx = str.IndexOf("h"); Console.WriteLine("Index of first "h": " + idx); idx = str.LastIndexOf("h"); Console.WriteLine("Index of last "h": " + idx); idx = str.IndexOf("ing"); Console.WriteLine("Index of first \"ing\": " + idx); idx = str.LastIndexOf("ing"); Console.WriteLine("Index of last \"ing\": " + idx); char[] chrs = { "a", "b", "c" }; idx = str.IndexOfAny(chrs); Console.WriteLine("Index of first "a", "b", or "c": " + idx); if(str.StartsWith("C# has")) Console.WriteLine("str begins with \"C# has\""); if(str.EndsWith("ling.")) Console.WriteLine("str ends with \"ling.\""); }
}
</source>
String.LastIndexOfAny(char[] myChars)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not", "to", "be"}; string myString = String.Join(".", myStrings); char[] myChars = {"b", "e"}; int index = myString.IndexOfAny(myChars); Console.WriteLine(""b" and "e" occur at index " + index + " of myString"); index = myString.LastIndexOfAny(myChars); Console.WriteLine(""b" and "e" last occur at index " + index + " of myString"); }
}
</source>
String.Length
<source lang="csharp"> using System;
class MainClass {
public static void Main() { string str1 = "ABCDEabcde1234567890"; Console.WriteLine("Display str1, one char at a time."); for(int i=0; i < str1.Length; i++) Console.Write(str1[i]); Console.WriteLine("\n"); }
}
</source>
String.PadLeft(int len)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not", "to", "be"}; string myString = String.Join(".", myStrings); string myString14 = "(" + myString.PadLeft(20) + ")"; Console.WriteLine(""(" + myString.PadLeft(20) + ")" = " + myString14); string myString15 = "(" + myString.PadLeft(20, ".") + ")"; Console.WriteLine(""(" + myString.PadLeft(20, ".") = " + myString15); string myString16 = "(" + myString.PadRight(20) + ")"; Console.WriteLine(""(" + myString.PadRight(20) + ")" = " + myString16); string myString17 = "(" + myString.PadRight(20, ".") + ")"; Console.WriteLine(""(" + myString.PadRight(20, ".") + ")" = " + myString17); }
}
</source>
String.PadLeft(int len, char ch)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not", "to", "be"}; string myString = String.Join(".", myStrings); string myString14 = "(" + myString.PadLeft(20) + ")"; Console.WriteLine(""(" + myString.PadLeft(20) + ")" = " + myString14); string myString15 = "(" + myString.PadLeft(20, ".") + ")"; Console.WriteLine(""(" + myString.PadLeft(20, ".") = " + myString15); string myString16 = "(" + myString.PadRight(20) + ")"; Console.WriteLine(""(" + myString.PadRight(20) + ")" = " + myString16); string myString17 = "(" + myString.PadRight(20, ".") + ")"; Console.WriteLine(""(" + myString.PadRight(20, ".") + ")" = " + myString17); }
}
</source>
String.PadRight(int len)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not", "to", "be"}; string myString = String.Join(".", myStrings); string myString14 = "(" + myString.PadLeft(20) + ")"; Console.WriteLine(""(" + myString.PadLeft(20) + ")" = " + myString14); string myString15 = "(" + myString.PadLeft(20, ".") + ")"; Console.WriteLine(""(" + myString.PadLeft(20, ".") = " + myString15); string myString16 = "(" + myString.PadRight(20) + ")"; Console.WriteLine(""(" + myString.PadRight(20) + ")" = " + myString16); string myString17 = "(" + myString.PadRight(20, ".") + ")"; Console.WriteLine(""(" + myString.PadRight(20, ".") + ")" = " + myString17); }
}
</source>
String.PadRight(int len, char ch)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not", "to", "be"}; string myString = String.Join(".", myStrings); string myString14 = "(" + myString.PadLeft(20) + ")"; Console.WriteLine(""(" + myString.PadLeft(20) + ")" = " + myString14); string myString15 = "(" + myString.PadLeft(20, ".") + ")"; Console.WriteLine(""(" + myString.PadLeft(20, ".") = " + myString15); string myString16 = "(" + myString.PadRight(20) + ")"; Console.WriteLine(""(" + myString.PadRight(20) + ")" = " + myString16); string myString17 = "(" + myString.PadRight(20, ".") + ")"; Console.WriteLine(""(" + myString.PadRight(20, ".") + ")" = " + myString17); }
}
</source>
String.Remove(int start, int end)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not", "to", "be"}; string myString = String.Join(".", myStrings); string myString10 = myString.Insert(6, "A, "); Console.WriteLine("myString.Insert(6, \"A, \") = " + myString10); string myString11 = myString10.Remove(14, 7); Console.WriteLine("myString10.Remove(14, 7) = " + myString11); string myString12 = myString11.Replace(",", "?"); Console.WriteLine("myString11.Replace(",", "?") = " + myString12); string myString13 = myString12.Replace("to be", "Or not to be A"); Console.WriteLine("myString12.Replace(\"to be\", \"Or not to be A\") = " + myString13); }
}
</source>
String.Replace(char ch, char ch2)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not", "to", "be"}; string myString = String.Join(".", myStrings); string myString10 = myString.Insert(6, "A, "); Console.WriteLine("myString.Insert(6, \"A, \") = " + myString10); string myString11 = myString10.Remove(14, 7); Console.WriteLine("myString10.Remove(14, 7) = " + myString11); string myString12 = myString11.Replace(",", "?"); Console.WriteLine("myString11.Replace(",", "?") = " + myString12); string myString13 = myString12.Replace("to be", "Or not to be A"); Console.WriteLine("myString12.Replace(\"to be\", \"Or not to be A\") = " + myString13); }
}
</source>
String.Replace(String value1, String value2)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not", "to", "be"}; string myString = String.Join(".", myStrings); string myString10 = myString.Insert(6, "A, "); Console.WriteLine("myString.Insert(6, \"A, \") = " + myString10); string myString11 = myString10.Remove(14, 7); Console.WriteLine("myString10.Remove(14, 7) = " + myString11); string myString12 = myString11.Replace(",", "?"); Console.WriteLine("myString11.Replace(",", "?") = " + myString12); string myString13 = myString12.Replace("to be", "Or not to be A"); Console.WriteLine("myString12.Replace(\"to be\", \"Or not to be A\") = " + myString13); }
}
</source>
String.Split(String splittor)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not", "to", "be"}; string myString9 = String.Join(".", myStrings); myStrings = myString9.Split("."); foreach (string mySplitString in myStrings) { Console.WriteLine("mySplitString = " + mySplitString); } }
}
</source>
String.StartsWith()
<source lang="csharp"> using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not","to", "be"}; string myString = String.Join(".", myStrings); Console.WriteLine("myString = " + myString); if (myString.StartsWith("To")) { Console.WriteLine("myString starts with \"To\""); } if (myString.EndsWith("be")) { Console.WriteLine("myString ends with \"be\""); } }
}
</source>
String == String
<source lang="csharp"> using System; class MainClass {
public static void Main() { bool boolResult; string myString = "str"; string myString2 = "str2"; boolResult = String.Equals("bbc", "bbc"); Console.WriteLine("String.Equals(\"bbc\", \"bbc\") is " + boolResult); boolResult = myString.Equals(myString2); Console.WriteLine("myString.Equals(myString2) is " + boolResult); boolResult = myString == myString2; Console.WriteLine("myString == myString2 is " + boolResult); }
}
</source>
String.SubString(int pos)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not", "to", "be"}; string myString = String.Join(".", myStrings); string myString21 = myString.Substring(3); Console.WriteLine("myString.Substring(3) = " + myString21); string myString22 = myString.Substring(3, 2); Console.WriteLine("myString.Substring(3, 2) = " + myString22); }
}
</source>
String.SubString(int start,)
<source lang="csharp"> using System; class MainClass {
public static void Main() { string[] myStrings = {"To", "be", "or", "not", "to", "be"}; string myString = String.Join(".", myStrings); string myString21 = myString.Substring(3); Console.WriteLine("myString.Substring(3) = " + myString21); string myString22 = myString.Substring(3, 2); Console.WriteLine("myString.Substring(3, 2) = " + myString22); }
}
</source>
String.ToCharArray
<source lang="csharp"> using System; using System.Collections.Generic; using System.Globalization; using System.IO; using System.Text; public class MainClass {
public static void Main() { string s = "Hello, World."; char[] c1 = s.ToCharArray(); char[] c2 = s.ToCharArray(0, 5); }
}
</source>
String.ToCharArray(int start,)
<source lang="csharp"> using System; using System.Collections.Generic; using System.Globalization; using System.IO; using System.Text; public class MainClass {
public static void Main() { string s = "Hello, World."; char[] c1 = s.ToCharArray(); char[] c2 = s.ToCharArray(0, 5); }
}
</source>
String.ToLower()
<source lang="csharp"> 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); }
}
</source>
String.ToUpper()
<source lang="csharp"> 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); }
}
</source>
String.Trim()
<source lang="csharp"> using System; class MainClass {
public static void Main() { string myString18 = "(" + " Whitespace ".Trim() + ")"; Console.WriteLine(""(" + \" Whitespace \".Trim() + ")" = " + myString18); string myString19 = "(" + " Whitespace ".TrimStart() + ")"; Console.WriteLine(""(" + \" Whitespace \".TrimStart() + ")" = " + myString19); string myString20 = "(" + " Whitespace ".TrimEnd() + ")"; Console.WriteLine(""(" + \" Whitespace \".TrimEnd() + ")" = " + myString20); }
}
</source>
String.TrimEnd()
<source lang="csharp"> using System; class MainClass {
public static void Main() { string myString18 = "(" + " Whitespace ".Trim() + ")"; Console.WriteLine(""(" + \" Whitespace \".Trim() + ")" = " + myString18); string myString19 = "(" + " Whitespace ".TrimStart() + ")"; Console.WriteLine(""(" + \" Whitespace \".TrimStart() + ")" = " + myString19); string myString20 = "(" + " Whitespace ".TrimEnd() + ")"; Console.WriteLine(""(" + \" Whitespace \".TrimEnd() + ")" = " + myString20); }
}
</source>
String.TrimStart()
<source lang="csharp"> using System; class MainClass {
public static void Main() { string myString18 = "(" + " Whitespace ".Trim() + ")"; Console.WriteLine(""(" + \" Whitespace \".Trim() + ")" = " + myString18); string myString19 = "(" + " Whitespace ".TrimStart() + ")"; Console.WriteLine(""(" + \" Whitespace \".TrimStart() + ")" = " + myString19); string myString20 = "(" + " Whitespace ".TrimEnd() + ")"; Console.WriteLine(""(" + \" Whitespace \".TrimEnd() + ")" = " + myString20); }
}
</source>