"Christina" <chrisgir***@gmail.com> wrote in message
news:1163455243.696524.35800@i42g2000cwa.googlegroups.com...
> Hello !!
>
> I am creating a dynamic textbox and want to validate it using the
> requiredfieldvalidator.
>
> These are the steps which I tried:
> ====================================================
> 1) In Page_load,
>
>    Dim Email As New Label
>    Email.Text = "* Email Address"
>    placeHolder1.Controls.Add(Email)
>
>    Dim txtEmailAddress As New TextBox
>    placeHolder2.Controls.Add(txtEmailAddress )
>
>
> 2) The HTML has:
> <tr><td>
> <asp:PlaceHolder ID="placeHolder1" Runat="server"></asp:PlaceHolder>
> <asp:requiredfieldvalidator id="reqFieldVal1" runat="server"
> Display="Dynamic" ErrorMessage="Required"
> ControlToValidate="txtEmailAddress"></asp:requiredfieldvalidator>
> </td>
> </tr>
>
> ====================================================
>
> This gives an error message :
>
> Unable to find control id 'txtEmailAddress' referenced by the
> 'ControlToValidate' property of 'reqFieldVal1'.
>
>
> I tried the following options, but was unsuccessful:
>
> a) Move requiredFieldValidator inside placeholder. (Googling around,
> suggested that the validator and control should be in the same
> container)
>
> b) Tried to create requiredFieldValidator dynamically and add it in the
> same placeholder (ie placeHolder1)
>
> Any pointers will be appreciated !!
>
> TIA..
>

> Christina,
>
> You have to set the ID property of the textbox.  You are creating a textbox
> object and then referring to it in code but from the perspective of the form
> it has no ID so .Net is making and ID up which doesn't align with the name
> you have given it.
>
> Dim txtEmailAddress As New TextBox
>
> txtEmailAddress.ID = "txtEmailAddress" <---- Add this
>
> PlaceHolder2.Controls.Add(txtEmailAddress)
>
> Dim ReqFieldVal As New RequiredFieldValidator
>
> ReqFieldVal.ControlToValidate = "txtEmailAddress"
>
> ReqFieldVal.ErrorMessage = "Required"
>
> PlaceHolder2.Controls.Add(ReqFieldVal)
>
> HTH,
>
> Ron
>
>
>
> "Christina" <chrisgir***@gmail.com> wrote in message
> news:1163455243.696524.35800@i42g2000cwa.googlegroups.com...
> > Hello !!
> >
> > I am creating a dynamic textbox and want to validate it using the
> > requiredfieldvalidator.
> >
> > These are the steps which I tried:
> > ====================================================
> > 1) In Page_load,
> >
> >    Dim Email As New Label
> >    Email.Text = "* Email Address"
> >    placeHolder1.Controls.Add(Email)
> >
> >    Dim txtEmailAddress As New TextBox
> >    placeHolder2.Controls.Add(txtEmailAddress )
> >
> >
> > 2) The HTML has:
> > <tr><td>
> > <asp:PlaceHolder ID="placeHolder1" Runat="server"></asp:PlaceHolder>
> > <asp:requiredfieldvalidator id="reqFieldVal1" runat="server"
> > Display="Dynamic" ErrorMessage="Required"
> > ControlToValidate="txtEmailAddress"></asp:requiredfieldvalidator>
> > </td>
> > </tr>
> >
> > ====================================================
> >
> > This gives an error message :
> >
> > Unable to find control id 'txtEmailAddress' referenced by the
> > 'ControlToValidate' property of 'reqFieldVal1'.
> >
> >
> > I tried the following options, but was unsuccessful:
> >
> > a) Move requiredFieldValidator inside placeholder. (Googling around,
> > suggested that the validator and control should be in the same
> > container)
> >
> > b) Tried to create requiredFieldValidator dynamically and add it in the
> > same placeholder (ie placeHolder1)
> >
> > Any pointers will be appreciated !!
> >
> > TIA..
> >