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)

   
 
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); 
  }  
}

String.Compare(String value1, String value2)

   
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);
  }
}

String.Compare(String value1, String value2, boolean case)

   
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);
  }
}

String.Concat(String value1, String value2)

   
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);
  }
}

String.Contains

   
using System;  
 
class MainClass {  
  public static void Main() {  
    string str = "abcdefghijk"; 
 
    if(str.Contains("def"))  
      Console.WriteLine("The sequence "def" was found."); 
 
  }  
}

String.Copy(String value)

   
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);
  }
}

String.Empty

   
using System;
using System.IO;
using System.Text;
public class MainClass
{
    public static void Main(string[] args)
    {
        string address = String.Empty;
    }
}

String.EndsWith()

  

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\"");
        }
    
    }
}

String.Equals(String aString)

   
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);
  }
}

String.Format(String format, Float aFloat);

   
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);
  }
}

String.IndexOf

  

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.\""); 
  } 
}

String.IndexOfAny(char[] myChars)

   
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");
  }
}

String.Insert(int index, String value)

   
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);
  }
}

String.Join(String join, String value)

   
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);
  }
}

String.LastIndexOf

  
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.\""); 
  } 
}

String.LastIndexOfAny(char[] myChars)

   
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");
  }
}

String.Length

   
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");   
  }
}

String.PadLeft(int len)

   
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);
  }
}

String.PadLeft(int len, char ch)

   
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);
  }
}

String.PadRight(int len)

   
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);
  }
}

String.PadRight(int len, char ch)

   
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);
  }
}

String.Remove(int start, int end)

   
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);
  }
}

String.Replace(char ch, char ch2)

   
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);
  }
}

String.Replace(String value1, String value2)

   
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);
  }
}

String.Split(String splittor)

   
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);
    }
  }
}

String.StartsWith()

  
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\"");
        }
    
    }
}

String == String

   
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);
  }
}

String.SubString(int pos)

   
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);
  }
}

String.SubString(int start,)

   
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);
  }
}

String.ToCharArray

   
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);
    }
}

String.ToCharArray(int start,)

   
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);
    }
}

String.ToLower()

  
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); 
  }
}

String.ToUpper()

  
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); 
  }
}

String.Trim()

   
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);
  }
}

String.TrimEnd()

   
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);
  }
}

String.TrimStart()

   
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);
  }
}

Csharp/C Sharp by API/System/String

Содержание

new String(char[] charArray)

String.Compare(String value1, String value2)

String.Compare(String value1, String value2, boolean case)

String.Concat(String value1, String value2)

String.Contains

String.Copy(String value)

String.Empty

String.EndsWith()

String.Equals(String aString)

String.Format(String format, Float aFloat);

String.IndexOf

String.IndexOfAny(char[] myChars)

String.Insert(int index, String value)

String.Join(String join, String value)

String.LastIndexOf

String.LastIndexOfAny(char[] myChars)

String.Length

String.PadLeft(int len)

String.PadLeft(int len, char ch)

String.PadRight(int len)

String.PadRight(int len, char ch)

String.Remove(int start, int end)

String.Replace(char ch, char ch2)

String.Replace(String value1, String value2)

String.Split(String splittor)

String.StartsWith()

String == String

String.SubString(int pos)

String.SubString(int start,)

String.ToCharArray

String.ToCharArray(int start,)

String.ToLower()

String.ToUpper()

String.Trim()

String.TrimEnd()

String.TrimStart()

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