Hi all

How can i test a text box to see if its not empty before poping up a Modal Popup Extender?

i.e. I dont want the Modal popup to display unless there is some text in the text box

The form has a button to bring up the modalpopup, the aspx is below

Hi,

Try using a RequiredFieldValidator on the TextBox:

        <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
            ControlToValidate="YOUR_TEXTBOX_CONTROL_ID" EnableClientScript="true"
            ErrorMessage="Please enter something in the textbox first!"></asp:RequiredFieldValidator>

Regards,

~ mellamokb

Thanks for the reply

I have a validator on the text box but it stil allows the modal popup to fire.

What i didn't mention was the text box is in a formview control.

Im not up to scratch with Javascript yet but it looks like javascript will solve it,

Im getting confused as to how javascript will work with a server control though ( so im trying to learn that too now!!!! - brain overload)

Any suggestions appreciated

Regards

Tino 

tinomclaren:

Hi all

How can i test a text box to see if its not empty before poping up a Modal Popup Extender?

i.e. I dont want the Modal popup to display unless there is some text in the text box

The form has a button to bring up the modalpopup, the aspx is below

<asp:Button ID="add_picture_btn" runat="server" Text="Add Picture" onclick="add_picture_btn_Click" /> 

<cc1:ModalPopupExtender ID="ModalPopupExtender1" runat="server" TargetControlID="add_picture_btn" PopupControlID="Panel1" BackgroundCssClass="modal_BG" OkControlID="Ok_btn" CancelControlID="Cancel_btn" ></cc1:ModalPopupExtender>

I would also like to display an alert box telling the user to enter something in the textbox first before clicking the button 

any code examples would be appreciated

Hi Tino,

Base on my experience, I think that you can use registerstartupscript to solve your problem.

Hope it helps,

Hong Gang 

first disable the modalpopupextender.

then in the on click event for button

if (textbox.text=="")

{response.write("please enter value in textbox");

}

else {modalpopupextender.enabled=true;}

Thank you Hong

I didn't resolve this issue, I actually decided not to use the modal popup as Im spending a lot of time trying to resolve the issue, im Learing Javascript but dont have enought time to use it with this project.

Thanks for the suggestion, I will follow it up, if I resolve it them i will post here.

Regards

Tino