A string is a collection of Unicode characters or an array of characters. In C#, string is a keyword that is an alias for the System.String class. The System.String class is immutable, which means that once created, the state cannot be changed. Strings can be used for a variety of operations such as concatenation, comparison, searching, trimming, removing, splitting, and replacing. The String class has two properties: character and length.
C# String Methods:
In C#, there are numerous string methods. Here are a few examples:
- Concat() – It is used to concatenate two strings.
- Compare() – It is used to compare two specified String objects.
- Replace() – It replace specified old character with specified new character.
- Trim() – It removes all leading and trailing whitespace from the string.
- Remove() – It returns characters from a string.
- Split() – It splits a string into substrings based on specified delimiter characters.
- Substring() – It returns the substring of a given string.
- Copy() – It creates a new String instance that has the same value as a given String.
- IndexOf() – It returns the position of the specified character in the given string.
- Format() – It replaces one or more format elements in a string with the string representation.
- ToCharArray() – It converts the string to a char array.
- ToString() – It is used to return the instance of a string.
- ToLower() – It is used to convert the string into lowercase.
The following section contains C# programs on strings, string operations such as join, compare, split, reverse, replace, padding, and transform operations. Every example program includes the problem description, problem solution, C# code, program explanation, and run-time test cases. All C# examples have been compiled and tested on Visual Studio.
Here is the listing of C# programming examples on Strings:
- C# Programs on Strings
- C# Programs on Simple String Operations
- C# Programs on Padding, Reversal, and Trimming Operations
- C# Programs on Replacement and Conversion Operations
- C# Programs on Advanced String Operations
1. C# Programs on Strings
| Program | Description |
|---|---|
| String Length Program in C# | C# Program to Find the Length of a String |
| Count Lines in a String in C# | C# Program to Count the Number of Lines in a String |
| Count Vowels and Consonants from a String in C# | C# Program to Count Number of Vowels and Consonants in a String |
| Frequency of “is” Word in a String in C# | C# Program to Find the Frequency of “is” Word in a String |
| Frequency of “the” Word in a String in C# | C# Program to Find the Frequency of “the” Word in a String |
2. C# Programs on Simple String Operations
| Program | Description |
|---|---|
| String Concatenation in C# | C# Program to Concatenate Two Strings |
| Display Date in String in C# | C# Program to Display Date in String |
| Display Abbreviation of a Text in C# | C# Program to Print the Abbreviation of a Text |
| All Substrings of a String in C# | C# Program to Find All Substrings in a String |
| Sum of Numbers in String in C# | C# Program to Find the Sum of Numbers in a String |
3. C# Programs on Padding, Reversal, and Trimming Operations
| Program | Description |
|---|---|
| Reverse a String without using Reverse Function in C# | C# Program to Reverse a String without using Reverse function |
| Reverse a String with Predefined Function in C# | C# Program to Reverse a String with Predefined Function |
| Split a String Collections into Groups in C# | C# Program to Split a String Collections into Groups |
| String Splitter in C# | C# Program to Implement String Splitter |
| String Trim in C# | C# Program to Trim the Given String |
| String Padding in C# | C# Program to Perform Padding in the String |
4. C# Programs on Replacement and Conversion Operations
| Program | Description |
|---|---|
| Replace a Character in String in C# | C# Program to Replace a Character with the String |
| Replace a String in String in C# | C# Program to Replace a String with Another String |
| Convert Uppercase to Lowercase in C# | C# Program to Convert Upper case to Lower Case |
| Change Case of Character in String in C# | C# Program to Convert Characters of a String to Opposite Case |
5. C# Programs on Advanced String Operations
| Program | Description |
|---|---|
| Searching using Predefined Functions in C# | C# Program to Perform Searching using Predefined Functions |
| Rijndael Algorithm in C# | C# Program to Encrypt/Decrypt a String using Rijndael Key |
| Random String Generator in C# | C# Program to Generate Random String |
| Print Strings from ArrayList in C# | C# Program to Print Strings from ArrayList |
