JavaScript:
<script language="javascript" type="text/javascript">
function textbox(obj, maxvalue, minvalue) {
if (obj.value != "") {
if (parseInt(obj.value) == obj.value && parseInt(obj.value) >= minvalue && parseInt(obj.value) <= maxvalue) {
//do nothing
}
else {
alert('Please enter ' + minvalue + ' - ' + maxvalue + '');
obj.value = "";
}
}
}
</script>
HTML:
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server" TextMode="Number"></asp:TextBox>
<asp:TextBox ID="TextBox2" runat="server" TextMode="Number"></asp:TextBox>
</div>
</form>
</body>
C#:
protected void Page_Load(object sender, EventArgs e)
{
//onblur
TextBox1.Attributes.Add("onblur", "textbox(" + TextBox1.ClientID + ", 10, 0)");
TextBox2.Attributes.Add("onblur", "textbox(" + TextBox1.ClientID + ", 5, 1)");
//onkeydown
//TextBox1.Attributes.Add("onkeydown", "textbox(" + TextBox1.ClientID + ", 10, 0)");
//TextBox2.Attributes.Add("onkeydown", "textbox(" + TextBox1.ClientID + ", 5, 1)");
}
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