- In C# programming, string is another kind of data type that represents Unicode Characters. It is the alias of System.String however, you can also write System.String instead of string.
- It is the sequence of character in which each character is a Unicode character.
- There is no difference between string and String because string is the alias of System.String.
- Most of the developers get confused what to use between sting and String. Technically there is no difference between them and they can use any of them.
- However, you will have to use “using System” to use the String in C#.
- Another difference is String is a class name whereas string is a reserved keyword. You should always use string instead of String.
| String Functions | Definitions |
| Clone() | Make clone of string. |
| CompareTo() | Compare two strings and returns integer value as output. It returns 0 for true and 1 for false. |
| Contains() | The C# Contains method checks whether specified character or string is exists or not in the string value. |
| EndsWith() | This EndsWith Method checks whether specified character is the last character of string or not. |
| Equals() | The Equals Method in C# compares two string and returns Boolean value as output. |
| GetHashCode() | This method returns HashValue of specified string. |
| GetType() | It returns the System.Type of current instance. |
| GetTypeCode() | It returns the Stystem.TypeCode for class System.String. |
| IndexOf() | Returns the index position of first occurrence of specified character. |
| ToLower() | Converts String into lower case based on rules of the current culture. |
| ToUpper() | Converts String into Upper case based on rules of the current culture. |
| Insert() | Insert the string or character in the string at the specified position. |
| IsNormalized() | This method checks whether this string is in Unicode normalization form C. |
| LastIndexOf() | Returns the index position of last occurrence of specified character. |
| Length | It is a string property that returns length of string. |
| Remove() | This method deletes all the characters from beginning to specified index position. |
| Replace() | This method replaces the character. |
| Split() | This method splits the string based on specified value. |
| StartsWith() | It checks whether the first character of string is same as specified character. |
| Substring() | This method returns substring. |
| ToCharArray() | Converts string into char array. |
| Trim() | It removes extra whitespaces from beginning and ending of string. |
Output
