How to detect if Asp.Net form is valid
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by Hasan Gürsoy
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Published on 2010-03-30T06:15:41Z
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2010/03/30
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Hi, I have a form which is in an updatePanel and I have a span with hidden loading image, which I want to show when user clicks to submit button but I first need to check if page is valid on client side. Also I'm making loading span visible with jQuery. Here is my code:
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
function showLoading() {
$('#loader').show();
}
</script>
</head>
<body>
<asp:ScriptManager ID="smMain" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="upForm" runat="server">
<ContentTemplate>
<asp:MultiView ID="mvContact" runat="server" ActiveViewIndex="0">
<asp:View ID="vDefault" runat="server">
<asp:TextBox ID="tEMail" runat="server" CssClass="input" />
<asp:RequiredFieldValidator ID="rfvEMail" runat="server" ControlToValidate="tEMail" ErrorMessage="* required" Display="Dynamic" />
<asp:RegularExpressionValidator ID="revEMail" runat="server" ControlToValidate="tEMail" ErrorMessage="* invalid" Display="Dynamic" ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*" />
<asp:ImageButton ID="btnSubmit" runat="server" ImageUrl="~/Assets/Images/btnSubmit.png" ToolTip="Submit Form" style="margin:5px 5px 0 -5px" onclick="btnSubmit_Click" OnClientClick="showLoading();" />
<span id="loader"><img src="Assets/Images/loader.gif" title="Sending..." /></span>
</asp:View>
<asp:View ID="vResult" runat="server">
<div class="result">
<span id="lResult" runat="server">Your message is sent</span>
</div>
</asp:View>
</asp:MultiView>
</ContentTemplate>
</asp:UpdatePanel>
</body></html>
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