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User-defined Exceptions in C# with Example
An exception is a problem that arises during the execution of a program. A C# exception is a response to an exceptional circumstance that arises while a program is running, such as an attempt to divide by zero.
Define your own exception. User-defined exception classes are derived from the Exception class.
The following is an example −
Example
using System;
namespace UserDefinedException {
class TestFitness {
static void Main(string[] args) {
Fitness f = new Fitness();
try {
f.showResult();
} catch(FitnessTestFailedException e) {
Console.WriteLine("User defined exception: {0}", e.Message);
}
Console.ReadKey();
}
}
}
public class FitnessTestFailedException: Exception {
public FitnessTestFailedException(string message): base(message) {
}
}
public class Fitness {
int points = 0;
public void showResult() {
if(points < 110) {
throw (new FitnessTestFailedException("Player failed the fitness test!"));
} else {
Console.WriteLine("Player passed the fitness test!");
}
}
}Above, we created a user-defined exception −
public class FitnessTestFailedException: Exception {
public FitnessTestFailedException(string message): base(message) {
}
Updated on: 21-Jun-2020
3K+ Views
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