C#: Strings Cheat Sheet - A quick cheatsheet for beginners, with examples

# Properties

`Chars`	Gets the Char object at a specified position in the current String object.
`Length`	Gets the number of characters in the current String object.

# Methods

`public static int Compare(string strA, string strB)`	Compares two specified string objects and returns an integer that indicates their relative position in the sort order.
`public static int Compare(string strA, string strB, bool ignoreCase )`	Compares two specified string objects and returns an integer that indicates their relative position in the sort order. However, it ignores the case if the Boolean parameter is true.
`public static string Concat(string str0, string str1)`	Concatenates two string objects.
`public static string Concat(string str0, string str1, string str2)`	Concatenates three string objects.
`public static string Concat(string str0, string str1, string str2, string str3)`	Concatenates four-string objects.
`public bool Contains(string value)`	Returns a value indicating whether the specified String object occurs within this string.
`public static string Copy(string str)`	Creates a new String object with the same value as the specified string.
`public void CopyTo(int sourceIndex, char[] destination, int destinationIndex, int count)`	Copies a specified number of characters from a specified position of the String object to a specified position in an array of Unicode characters.
`public bool EndsWith(string value)`	Determines whether the end of the string object matches the specified string.
`public bool Equals(string value)`	Determines whether the current String object and the specified String object have the same value.
`public static bool Equals(string a, string b)`	Determines whether two specified String objects have the same value.
`public static string Format(string format, Object arg0)`	Replaces one or more format items in a specified string with the string representation of a specified object.
`public int IndexOf(char value)`	Returns the zero-based index of the first occurrence of the specified Unicode character in the current string.
`public int IndexOf(string value)`	Returns the zero-based index of the first occurrence of the specified string in this instance.
`public int IndexOf(char value, int startIndex)`	Returns the zero-based index of the first occurrence of the specified Unicode character in this string, starting the search at the specified character position.
`public int IndexOf(string value, int startIndex)`	Returns the zero-based index of the first occurrence of the specified string in this instance, starting the search at the specified character position.
`public int IndexOfAny(char[] anyOf)`	Returns the zero-based index of the first occurrence in this instance of any character in a specified array of Unicode characters.
`public int IndexOfAny(char[] anyOf, int startIndex)`	Returns the zero-based index of the first occurrence in this instance of any character in a specified array of Unicode characters, starting the search at the specified character position.
`public string Insert(int startIndex, string value)`	Returns a new string in which a specified string is inserted at a specified index position in the current string object.
`public static bool IsNullOrEmpty(string value)`	Indicates whether the specified string is null or an Empty string.
`public static string Join(string separator, params string[] value)`	Concatenates all the elements of a string array, using the specified separator between each element.
`public static string Join(string separator, string[] value, int startIndex, int count)`	Concatenates the specified elements of a string array, using the specified separator between each element.
`public int LastIndexOf(char value)`	Returns the zero-based index position of the last occurrence of the specified Unicode character within the current string object.
`public int LastIndexOf(string value)`	Returns the zero-based index position of the last occurrence of a specified string within the current string object.
`public string Remove(int startIndex)`	Removes all the characters in the current instance, beginning at a specified position and continuing through the last position, and returns the string.
`public string Remove(int startIndex, int count)`	Removes the specified number of characters in the current string beginning at a specified position and returns the string.
`public string Replace(char oldChar, char newChar)`	Replaces all occurrences of a specified Unicode character in the current string object with the specified Unicode character and returns the new string.
`public string Replace(string oldValue, string newValue)`	Replaces all occurrences of a specified string in the current string object with the specified string and returns the new string.
`public string[] Split(params char[] separator)`	Returns a string array that contains the substrings in the current string object, delimited by elements of a specified Unicode character array.
`public string[] Split(char[] separator, int count)`	Returns a string array that contains the substrings in the current string object, delimited by elements of a specified Unicode character array. The int parameter specifies the maximum number of substrings to return.
`public bool StartsWith(string value)`	Determines whether the beginning of this string instance matches the specified string.
`public char[] ToCharArray()`	Returns a Unicode character array with all the characters in the current string object.
`public char[] ToCharArray(int startIndex, int length)`	Returns a Unicode character array with all the characters in the current string object, starting from the specified index and up to the specified length.
`public string ToLower()`	Returns a copy of this string converted to lowercase.
`public string ToUpper()`	Returns a copy of this string converted to uppercase.
`public string Trim()`	Removes all leading and trailing white-space characters from the current String object.

Example

using System;
namespace MyApplication
{
  class Program
  {
    static void Main(string[] args)
    {
      string firstName = "Hanah";
      string lastName = "Kim";
      string name = firstName + lastName;
      Console.WriteLine(name);
    }
  }
}

=> output

Hanah Kim

# Properties

# Methods

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