ASP.NET - Validating Form Before Standard Validation

Question

I have an ASP.NET form where I have an ImageButton control as follows (please note that this only part of a bigger form):

<asp:CheckBox runat="server" ID="checkbox1" Text="Validate" Enabled="false" />
<asp:TextBox runat="server" ID="textbox1" MaxLength="30" />
<asp:RequiredFieldValidator ID="validator1" ControlToValidate="textbox1" Text="required!" runat="server" ValidationGroup="group1" />
<asp:ImageButton ID="button1" runat="server" Width="24" ValidationGroup="group1" />

Using Javascript, I could disable and enable the RequiredFieldValidator as follows:

function test() {
  var checkbox1 = document.getElementById("<%=checkbox1.ClientID %>");
  var ckOwnerIsOperator = document.getElementById('<%=ckOwnerIsOperator.ClientID %>');

  if (checkbox1.checked)
    ValidatorEnable(validator1, false);
}

What I am looking for is an event that fires before the validation on the button when the button is clicked. I know I could do this on checkbox click event, but it is not what I need. The checkbox click event has a problem where I lose the validator state if another control triggered an async postback, so I want the test() function to be called before the page validation occurs.

Thank you all

John Lieb-Bauman · Accepted Answer · 2013-10-04 15:21:53Z

1

You could add onclientclick="test()" to the button.

edited Oct 4, 2013 at 15:21

answered Oct 4, 2013 at 15:16

John Lieb-Bauman

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2 Comments

malkassem Over a year ago

That worked... for some reason I thought I tried that, but apparently not! Thank you

John Lieb-Bauman Over a year ago

Maybe you used onclick like I originally had before my edit. It is pretty easy to confuse the two when coding fast.

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