Index

C# User Input

In C#, User Input allows a program to receive data from the user during runtime. This makes programs interactive and dynamic.

The most common way to take user input in C# is by using the Console.ReadLine() method.

Why User Input is Important

Makes programs interactive
Allows dynamic data processing
Improves user experience

Taking User Input Using Console.ReadLine()

The Console.ReadLine() method reads input as a string from the keyboard.


// Basic User Input Example
Console.Write("Enter your name: ");
string name = Console.ReadLine();

Console.WriteLine("Hello " + name);

Converting User Input

Since user input is always read as a string, it must be converted to other data types when needed.

Method	Description	Example
int.Parse()	Converts string to int	int age = int.Parse(Console.ReadLine());
Convert.ToDouble()	Converts string to double	double price = Convert.ToDouble(Console.ReadLine());
Convert.ToBoolean()	Converts string to bool	bool isActive = Convert.ToBoolean(Console.ReadLine());

Example with Conversion


Console.Write("Enter your age: ");
int age = int.Parse(Console.ReadLine());

Console.WriteLine("Your age is: " + age);

Key Points

User input is taken using Console.ReadLine()
Input is always read as a string
Conversion is required for numeric data
Invalid input can cause runtime errors

Conclusion

User input is a fundamental concept in C# programming. Proper handling and conversion of input helps in building robust and user-friendly applications.