I have a formview which is inside the Ajax Tab.
Inside formview i have a Textbox defined in the EditTemplate of formview.

I have two issues:

 First i cant access tht control and second i need to pass this control as Update parameter which is not working either , since update cant find it either

 Here is the code:  ANY SOLUTIONS PLZ

<cc1:TabContainer ID="TabContainer1" runat="server" ActiveTabIndex="0">

<cc1:TabPanel ID="TabPanel2" runat="server" HeaderText="General">

<ContentTemplate>

<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">

<ContentTemplate>

<asp:FormView ID="FormView1" runat="server" DataSourceID="T2SqlDataSource1" BackColor="LightGoldenrodYellow">

Hi,

Firstly, please change the mode of FormView to "edit". Then you can use FindControl to retrieve the control.

If it's hard to get it after changing to edit mode, you can use FindControlRecursive function to find specific control in the page.

You can try the below code to get the directory of the control.

    Dim idcollection As String = ""

    Public Function FindControlRecursive(ByVal ctrl As Control, ByVal controlID As String) As Control
        If String.Compare(ctrl.ID, controlID, True) = 0 Then

            ' We found the control!

            Return ctrl
        Else

            ' Recurse through ctrl's Controls collections

            For Each child As Control In ctrl.Controls
                Dim lookFor As Control = FindControlRecursive(child, controlID)
                If lookFor IsNot Nothing Then
                    idcollection = idcollection & child.ID & "-"

                    Return lookFor ' We found the control

                End If

            Next

            ' If we reach here, control was not found

            Return Nothing

        End If
    End Function


    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        Dim tb As Control = FindControlRecursive(Page, "TextBox12")
        If tb Is Nothing Then
            Response.Write("control not found" & "<br/>")

        Else
            Response.Write("control found" & "<br/>")
            Response.Write(idcollection)
        End If


    End Sub 

 The directory will be displayed so that you can use FindControl function to find it. Then you can also pass this control as Update parameter.