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>
