What is the purpose of throw keyword
in C# (C Sharp)?

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()


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