CODEWITHSUNDEEP
c#
g bas
g bas

Reputation: 808

instantiate an object or a list of objects with variables

Let s assume that i have a string named str with some value that is the name of a class. e.g string str="MyClass"; Is it any way to instatiate an object or a list of objects using this variable?

( That's because I don't know from the beginning what type of objects i should create but somewhere inside the program I get a list of strings with the name of the classes )

Some dummy silly code of what i really want is :

List<**str**> myList = new List<str>();

or

**str** object = new **str**();

Thanx in advance!

Upvotes: 0

Views: 141

Answers (2)

Stochastically
Stochastically

Reputation: 7846

You could base your code on the following, which constructs an instance of MyClass given its name:

namespace MyNameSpace {

    public class MyClass {
        public MyClass() {
            // initialise
        }

        public static MyClass CreateMyClassFromName() {
            Type myType = Type.GetType("MyNameSpace.MyClass");
            System.Reflection.ConstructorInfo constinfo = myType.GetConstructor(new Type[] { });
            MyClass mc = (MyClass)constinfo.Invoke(null);
            return mc;
        }

    }

}

Upvotes: 0

cuongle
cuongle

Reputation: 75306

You can use reflection, assume your class is in the same assembly:

string input = "MyClass";

var type = Assembly.GetExecutingAssembly()
                   .GetTypes()
                   .FirstOrDefault(t => t.Name == input);

MyClass myObject = (MyClass)Activator.CreateInstance(type);

Upvotes: 1

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