I am totally new to asp.net mvc-2. Let me now explain my need. I have a view to create an "Instructio n". I need to enter InstructionName , Description, and few Attributes to it. The number of attributes is determined at runtime. When "more attributes" is clicked I replicate a div which contains AttributeId(Dro pdown) and AttributeValue( Textbox). The isntruction details are entered in Instruction table and the attribute details are...

In our application we have to access session objects in business class. We are using HttpContext.Cur rent.Session to get the session value. In some cases it returns the value but mostly its throwing a null reference exception(Objec t reference not set to an instance of an object). We have the following code
Try

If HttpContext.Cur rent.Session("U sername") IsNot Nothing then
' Statements to be executed...