A page can have only one server-side form tag.

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VB

Hi My proyect ASP VB.net consists in a MasterPage and WebForm.aspx

In the master page I have two controls, a textbox and a label. I needed to put them inside a tag to make them work.

In my .aspx I have more controls such as DropDownList, GridView, Buttons and some checkboxes.

Theese last ones won't work unless I put them inside a tag, but when I execute I recive "A page can have only one server-side Form tag." message.

I understand the message, so i take away the runat tag in my .aspx.

I also played a bit with Enable AutoPostBack property in the controls and also in the code.

Also I put in my .aspx behind code this VB code:

With this las code, the DropDownLists get filled with data, but when I selecet an item, the .aspx webpage seems to reload and the selection don't ocur.

Thanks for your time and help.

What I have tried:

Public Overrides Sub VerifyRenderingInServerForm(ByVal control As Control)
        'Required to verify that the control is rendered properly on page
End Sub

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not IsPostBack Then

            For i = 0 To Me.Controls.Count - 1
                VerifyRenderingInServerForm(Me.Controls.Item(i))
            Next
End Sub