<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script type="text/javascript">
function Myfunc() {
if (check("<%=TextBox1.ClientID %>"))
alert("Fill TextBox1");
else if (check("<%=TextBox2.ClientID %>"))
alert("Fill TextBox2");
else if (check("<%=TextBox3.ClientID %>"))
alert("Fill TextBox3");
else if (check("<%=TextBox4.ClientID %>"))
alert("Fill TextBox4");
else if (check("<%=TextBox5.ClientID %>"))
alert("Fill TextBox5");
}
function check(Id) {
if (!document.getElementById(Id)) return false;
return (document.getElementById(Id).value.length == 0)
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
</div>
<center>
<asp:Label runat="server" ID="Label1" Text="TextBox Validation using Javascript" ForeColor="Red"></asp:Label><br />
<asp:Label runat="server" ID="Lable1" Text="Lable1"></asp:Label>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<br />
<asp:Label runat="server" ID="Label2" Text="Lable2"></asp:Label>
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<br />
<asp:Label runat="server" ID="Label3" Text="Lable3"></asp:Label>
<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
<br />
<asp:Label runat="server" ID="Label4" Text="Lable4"></asp:Label>
<asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>
<br />
<asp:Label runat="server" ID="Label5" Text="Lable5"></asp:Label>
<asp:TextBox ID="TextBox5" runat="server"></asp:TextBox>
<br />
<asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="Myfunc();" />
</center>
</form>
</body>
</html>
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