Answer Posted / rizwan

they are called namespaces in C#.
they are included as
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

Can you have parameters for static constructors?

525

---

Can an abstract class have a constructor c#?

487

---

What is the base class from which all value types are derived?

493

---

Can main method be final?

465

---

So let's say I have an application that uses myapp.dll assembly, version 1.0.0.0. There is a security bug in that assembly, and I publish the patch, issuing it under name myapp.dll 1.1.0.0. How do I tell the client applications that are already installed to start using this new myapp.dll?

483

---

---

What is using directive in c#?

492

---

What is the use of main method in c#?

481

---

What is the difference between function and method in c#?

446

---

What is the difference between virtual and override in c#?

467

---

Explain the difference between private and shared assembly?

451

---

Can property be private in c#?

490

---

Why is it efficient to use System.string under System.Text.StringBuilder ?

519

---

what optimizations does the c# compiler perform when you use the /optimize+ compiler option?

588

---

Can I get the name of a type at runtime?

525

---

What is a copy constructor in c#?

490

---