C# Error Handling

Syntax

try 
{
    // block of code to monitor or test for errors
}
catch (Exception ex) 
{
    // code to execute if an error occurs
}
finally 
{
    // optional block of code to execute after the try block
}

Example

try 
{
    int dividend = 10;
    int divisor = 0;

    int result = dividend / divisor;

    Console.WriteLine("Result = " + result);
} 
catch (DivideByZeroException ex) 
{
    Console.WriteLine("Error: " + ex.Message);
} 
finally 
{
    Console.WriteLine("Done.");
}

Output

The output of the above example will be:

Error: Attempted to divide by zero.
Done.

Explanation

C# error handling lets you monitor and test for errors in your code. You use a try...catch block to monitor a block of code that throws an exception, then execute another block of code if the exception is caught.

The try block executes the code you want to monitor for errors. If an exception occurs, the code inside the catch block will execute. If the exception type matches a type that you specify in the catch statement, the appropriate code is executed. If you don't specify any exception types in the catch block, the exception is caught and handled by the default block.

The finally block is optional and can contain code that is executed after the try block, whether or not an exception occurs.

Use

C# error handling is used to monitor and test for errors in code. It is often used in situations where the code may encounter expected or unexpected exceptions, such as accessing files, network resources, or user input.

Proper error handling can help you identify and resolve issues in your code, improve the overall user experience, and make your code more robust and reliable.

Important Points

• C# error handling uses try...catch blocks to monitor and test for errors in code.
• The try block is used to execute the code to monitor for errors.
• The catch block is used to execute code if an exception is thrown.
• The finally block is optional and is used to execute code that must run after the try block, whether or not an exception occurs.
• Exception handling in C# can help improve user experience, identify issues, and make your code more reliable.

Summary

C# error handling is an important tool for monitoring and testing for errors in your code. It helps you identify and resolve issues, improve the overall user experience, and make your code more reliable. By understanding the basic syntax and use cases for try...catch blocks, you can write code that is more robust, maintainable, and user-friendly.