Create Class Question

[lorena]

I am trying to create a class that can be invoked to create a bi-directional sort of any datagrid on the pages of the site I am working on.

This is only the second time I have ever tried this and I am getting errors in the code but I am not sure why.

I want to incorporate ViewState as part of the class.

This is my code:

Imports System.Web.UI.Page
Public Class clsSort
   Private Property SortExpression() As String
       Get
         Dim o As Object = ViewState("SortExpression")
         If o Is Nothing Then
           Return String.Empty
         Else
           Return o.ToString
         End If
       End Get

       Set(ByVal Value As String)
         ViewState("SortExpression") = Value
       End Set
     End Property

 Private Property SortAscending() As Boolean
       Get
         Dim o As Object = ViewState("SortAscending")
         If o Is Nothing Then
           Return True
         Else
           Return Convert.ToBoolean(o)
         End If
       End Get
       Set(ByVal Value As Boolean)
         ViewState("SortAscending") = Value
       End Set
     End Property
End Class

I included the System.Web in my Project references

 

This is my error message:

'System.Web.UI.Control.Protected Overridable Overloads ReadOnly Property ViewState() As System.Web.UI.StateBag' is not accessible in this context because it is 'Protected'

 

It seems like there should be a way to do this so I don't have to keep copying the code each time. I just can't quite figure it out.