Pass in Type to check against

I have a method in which I'm doing a check to see if the current object in a loop is the same type as a type I pass into the method.

At first I was passing the type into the method as a string and then using:

item.GetType().ToString().Equals(myType);

What I'd really prefer to do is use the is keyword to do:

item is myType

The problem I'm having is passing in myType to the method. Do I need to use some kind of funky generics type or somethin开发者_如何学Pythong? What type do I pass in a reference ot a type as?

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Is it something like this?

public static bool ContainsType<T>()
{
    object[] objects = new object[] { };

    foreach (var o in objects)
    {
        if (o is T)
        {
            return true;
        }
    }

    return false;
}

public static void Main(string[] args)
{
    ContainsType<int>();
}

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Do you mean something like:

    public List<T> GetItemsOfType<T>(List<object> allObjects)
    {
        return allObjects.Where(o => o is T).Cast<T>().ToList();
    }

Which you would then call with something like

var result = GetItemsOfType<MyType>(myObjects);

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You can use the normal equality operator:

item.GetType() == myType;

This will return true if item is of the exact type that myType describes. Note that it will return false if there is any difference, though:

class A { }
class B : A { }

B item = new B();
Type myType = typeof(A);
bool sameType = item.GetType() == myType; // this will be false

One good thing to know about Type objects is this text that is to be found in the documentation:

A Type object that represents a type is unique; that is, two Type object references refer to the same object if and only if they represent the same type. This allows for comparison of Type objects using reference equality.