What is the purpose of throw keyword in C#?

Throw is used to throw exceptions explicitly from your code. It is used for the following purposes:

• To throw pre-defined exceptions from your code
• To throw user-defined exceptions from your code
• To re-throw an exception caught in the catch block to the calling method
Here is an example demonstrating usage of throw keyword to throw user-defined exception:
class sampleException:Exception {
public sampleException(){
Console.WriteLine(“Executing User Defined Exception..”);
}
}
class sampleClass {
public static void Main() {
try {
throw new sampleException();
}
catch(Exception ex) {
Console.WriteLine(“Exception Caught:” + ex.ToString());
}

}
}

Output of this code will be:

Executing User Defined Exception..
Exception Caught: sampleException: Exception of type ‘sampleException’ was thrown at sampleClass.Main()

“Amazon and the Amazon logo are trademarks of Amazon.com, Inc. or its affiliates.”

| Privacy Policy for www.dotnet-guide.com | Disclosure | Contact |