How to get Session's value in a class object?

Question

I have assigned session a custom class's object like:

Services Obj = getServiceDetails(3); //getting all data of Service where Id = 3
Session["ServiceObj"] = Obj;

Now I want to assign its value to same class's another object in a model class. I don't know how to do it.

I tried but it is not valid way.:

Services oldObj = <Services>Session["ServiceObj"];

Pls Help me. I don't know how to do it.

• Igor: Services oldObj = (Services)Session["ServiceObj"];
• Dhwani: @Igor, It would be nice if you post your comment as answer.So I can accept it.
• Igor: Done (see my answer below)

Answer 1

Correct type cast requires round brackets:

Services oldObj = (Services)Session["ServiceObj"];

Answer 2

you should use Services oldObj = (Services)Session["ServiceObj"];

instead of Services oldObj = <Services>Session["ServiceObj"];

Answer 3

not <Services> use (Services) for casting

Answer 4

Cast it with your Class like this

Services obj = (Services)Session["ServiceObj"];

Answer 5

You can also refactor the typed data retrieval using a generic, e.g. using an extension method, like so:

public static class MyExtensions
{
 public static T GetTypedVal<T>(this HttpSessionState session, string key)
 {
 var value = session[key];
 if (value != null)
 {
 if (value is T)
 {
 return (T)value;
 }
 }
 throw new InvalidOperationException(
 string.Format("Key {0} is not found in SessionState", key));
 }
}

Which you can then use for reference and value types, like so:

 Session["Value"] = 5;
 var valResult = Session.GetTypedVal<int>("Value");
 Session["Object"] = new SomeClass() { Name = "SomeName" };
 var objResult = Session.GetTypedVal<SomeClass>("Object");

Answer 6

to get value from session you should cast it.

Services oldObj = (Service)Session["ServiceObj"];