Hi Friends, I have decalred my control vaiables in a base class and written some event on it.the i have some othere drived class and finally i am inheriting these calss in my child class which (UI) layer.I have created the public propery of there variables in my UI and accessing and assiging data through these property.But i am facing one problem when i am opening my UI form VS creates the duplicate definition in my code behind page.I don't know why it is happening.I will just show you the code snippet. Base Class ***************** Protected ConnectionString As String = ConfigurationSettings.AppSettings("ConnectionString")
Protected _UrlReferrer As TextBox Protected _PageTitle As Label Protected WithEvents _ErrorValidator As CustomValidator
Public _ErrorSummary As ValidationSummary Protected WithEvents _Search As HtmlInputButton Protected _SortBy As TextBox Protected WithEvents _Grid As DataGrid
Next Class **************** Public Class EditForm
Inherits BaseForm Protected WithEvents _Insert As HtmlInputButton
Protected WithEvents _Update As HtmlInputButton
Protected WithEvents _Delete As HtmlInputButton
Protected WithEvents Cancel As HtmlInputButton UI Layer *********** Public Class EmployeeMaster
Inherits EditForm Public Property Insert() As HtmlInputButton
Set(ByVal value As HtmlInputButton)
MyBase._Insert = value
End Set
Get
Return MyBase._Insert
End Get
End Property Public Property Grid() As DataGrid
Set(ByVal value As DataGrid)
MyBase._Grid = value
End Set
Get
Return MyBase._Grid
End Get
End Property like this but in UI it is creating the duplicate definition of control varabiles defined in base class. thanks sandeep | 
