How can I instantiate an object from a string containing its classname? [duplicate]

Question

I have the following qualified class name stored in a string:

string className="Project.LogicLayer.FunctionsLayer.Medic";

Now I need a new instance of the class from using that string.

I tried this but it always returns null:

Type t=Type.GetType(className);
object = Activator.CreateInstance(t);

how about System.Reflection.Assembly.GetExecutingAssembly().CreateInstance(string className) ? — esiprogrammer
– esiprogrammer, Commented Mar 30, 2016 at 21:53
Is the class in the same assembly as you are calling Activator.CreateInstance? and is variable t null or not null? — Glen Thomas
– Glen Thomas, Commented Mar 30, 2016 at 21:57

Colin Grealy · Accepted Answer · 2016-03-30 22:01:47Z

4

Try this overload of Activator.CreateInstance

Activator.CreateInstance("MedicAssembly", "Project.LogicLayer.FunctionsLayer.Medic");

answered Mar 30, 2016 at 22:01

Colin Grealy

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1 Comment

MagnunStalin Over a year ago

Thanks, now it works, I have based in your example.

Assembly asm = Assembly.LoadFrom("C:\\Projec\\AppMedical\\packages\\BussinessLayer\\lib\\net451\\Buessinesslayer.dll"); 							Type t = asm.GetType(Project.LogicLayer.FunctionsLayer.Medic); 							var obj = Activator.CreateInstance(t);

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