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Obtaining a Type Reference Using System.Object.GetType()



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[book] [en] Pro C# 2008 and the NET 3.5 Platform Fourth Edition

Obtaining a Type Reference Using System.Object.GetType()

You can obtain an instance of the Type class in a variety of ways. However, the one thing you cannot

do is directly create a Type object using the new keyword, as Type is an abstract class. Regarding your

first choice, recall that System.Object defines a method named GetType(), which returns an instance

of the Type class that represents the metadata for the current object:

// Obtain type information using a SportsCar instance.

SportsCar sc = new SportsCar();

Type t = sc.GetType();

Obviously, this approach will only work if you have compile-time knowledge of the type

(SportsCar in this case) and currently have an instance of the type in memory. Given this restriction,

it should make sense that tools such as ildasm.exe do not obtain type information by directly call-

ing System.Object.GetType() for each type, given the ildasm.exe was not compiled against your

custom assemblies!




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