What exception classes already exist and when do we use them?

Question

In .net, C #

There are many Exception subclasses that already exist, what are they and when do we use them instead of creating our own subclass?

This question is duplicated C # has an overview of exceptions

Answer 1

Here is a list of common exception types. If you want to know when to create your own exceptions, try:

What are some guidelines for creating your own custom exception?

Answer 2

, , (, NullReferenceException IndexOutOfRangeException) - ; , .

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ArgumentNullException

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ArgumentOutOfRangeException

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if (x < 1)
{
    throw new ArgumentOutOfRangeException("x");
}

.

FormatException

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InvalidOperationException

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IEnumerator<T> InvalidOperationException, , . , , , .

NotSupportedException

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abstract class Animal : Organism
{
    public virtual bool EatsPlants
    {
        get { return false; }
    }

    public virtual void EatPlant(Plant food)
    {
        throw new NotSupportedException();
    }

    public virtual bool EatsAnimals
    {
        get { return false; }
    }

    public virtual void EatAnimal(Animal food)
    {
        throw new NotSupportedException();
    }
}

class Herbivore : Animal
{
    public override bool EatsPlants
    {
        get { return true; }
    }

    public override void EatPlant(Plant food)
    {
        // whatever
    }
}

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Answer 3

Exception .NET Reflector.

http://www.red-gate.com/products/reflector/