declare Genric type via reflection

Question

hi i like to know about how to instantiate generic object with reflection pls find my example I want to create an Object of hello with generic type ClassABC //want to Create hello objectwith generic type will declare at run time only public void DoHello(String ClassName) { Type TypeClassABC= Type.GetType(ClassName); hello _hello= new hello (); } But get a build error: the type or namespace TypeClassABC could not be found

Bechir Bejaoui · Answer

Hi OK my freind here are two small techniques to make you hand on process. using System; using System.Collections.Generic; using System.Reflection; namespace TestProject01 { class Program { static void Main( string [] args) { Type t = typeof ( Hello ); Type [] generic = new Type []{ typeof ( abc )}; Type genericT = t.MakeGenericType(generic); //Technique 1 ConstructorInfo constructorInfo = genericT.GetConstructor(new Type[]{}); constructorInfo.Invoke(null); //Technique 2 object obj = Activator .CreateInstance(genericT); Console .Read(); } } class Hello { public Hello() { Console .WriteLine( string .Format( I'm {0} my generic type is {1}  this .GetType().ToString() typeof (T).ToString())); } } class abc { } } But I advise you before stating developping using reflection to read some tutorial about it before http://en.csharp-online.net/Attributes_and_Reflection%E2%80%94Reflection I strongly advise you following this cours that I already followed in the past before taking action taward reflection

harshil oh · Answer

thanx for response  actulay iam looking for create generic class its generic type will declare at run time via reflection how its possible. void CreatHelloObject() { //type is from one dll  sample.dll   type name is ' abc ' hello helloObj = new hello (); . } public Class hello { }

Bechir Bejaoui · Answer

Hi Please take a look on that http://msdn.microsoft.com/en-us/library/b8ytshk6.aspx