Radio button vs Textbox

[Malchik]

Hi

How can i validate a textbox based on a radio button. Let says I have two radio buttons in a form : Invoice Paper and E-Bill If the user select E-Bill I want to make sure the email textbox is not empty, otherwise it does not matter.

I need to do that on the submit button. I am working with DW CS4 and C#. I am use to work with VS2008 and VB.net... so i am relearning stuff here.

Thank you for your help

Mal'chik

 

[Malchik]

Here is what I tried:

<input name="optBill" type="radio" id="optBill" onmouseup="<%Contact_Email.Text = "YourEmailGoesHere"%>" value= "PAPER" <%if(AdorRec.FieldValue("Billing_Type", null)=="PAPER") {Response.Write("checked");}else{Response.Write("");}%> />Through Email (EBill)

The Idea is that if the user select EBill, the email textbox has to be set to enabled. For testing purposes, I temporally try to change the text property of the email textbox. When I try nothing happen

Mal'chik

 

[Malchik]

I changed how the validation would work. Instead I added a small javascript to validate the field when the submit button is use. Here is the code, in cas it can help someone:

<script language="JavaScript">
	function ValidateEmailForEBill()
	{
		if (document.getElementById("optBill2").checked)
			if (document.getElementById("Contact_Email").value=="" && document.getElementById("Customer_Email").value=="")
			{
				alert('Because the Paperless invoicing has been selected, you need to provide an Email address for either the Contact or the Company.');
				return false;
			}
			else
				return true;
		else
			return true;
	}
</script>

Mal'chik