DotNet: Text Area Validation for maximum length in java script and asp.net

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="TextAreaValidation.aspx.cs"Inherits="TextAreaValidation" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

function TextAreaValidation(field, count, max)

{

if (field.value.length > max)

{

field.value = field.value.substring(0, max);

field.blur();

field.focus();

return false;

}

else

count.value = max - field.value.length;

}

</script>

</head>

<body>

<asp:TextBox runat="server" onblur="TextAreaValidation(this,this.form.counter,500);"

onkeyup="TextAreaValidation(this,this.form.counter,500);"

style="width: 352px; height: 74px" rows="5" cols="10" id="txtArea" TextMode="MultiLine" ></asp:TextBox>

<br />

Maximum Character<input type="text" onblur="TextAreaValidation(this.form.recipients,this,500);" disabled="disabled" onfocus="this.blur();" value="500" name="counter" />

</form>

</body>

</html>

DotNet

Tuesday 16 October 2012

Text Area Validation for maximum length in java script and asp.net

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