ASP.NET: Asign Users in Roles(Array.IndexOf(Of String) method)

Can anyone help me with this code below I downloaded and this line does not work coz I'm using ASP.NET 2.0 I'm still new on asp.net. Is there anyone who know the Array.IndexOf(Of String) method

The Linq.Enumerable.Contains(Of String)(...) syntax will not compile if you are using ASP.NET version 2.0. The Contains(Of String) method is part of the LINQ library, which is new to ASP.NET 3.5. If you are still using ASP.NET version 2.0, use the Array.IndexOf(Of String) method instead




Private Sub CheckRolesForSelectedUser()
' Determine what roles the selected user belongs to
Dim selectedUserName As String = UserList.SelectedValue
Dim selectedUsersRoles() As String = Roles.GetRolesForUser(selectedUserName)

' Loop through the Repeater's Items and check or uncheck the checkbox as needed
For Each ri As RepeaterItem In UsersRoleList.Items
' Programmatically reference the CheckBox
Dim RoleCheckBox As CheckBox = CType(ri.FindControl("RoleCheckBox"), CheckBox)
' See if RoleCheckBox.Text is in selectedUsersRoles
If Linq.Enumerable.Contains(Of String)(selectedUsersRoles, RoleCheckBox.Text) Then
RoleCheckBox.Checked = True
Else
RoleCheckBox.Checked = False
End If Next End Sub

msandlana