Read TextBox input, convert to double and do calculation (C#) : Double « Language Basics « ASP.Net






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Read TextBox input, convert to double and do calculation (C#)

<%@ Page Language="C#" Debug="true" %>
<script runat="server">

    void Page_Load()
    {
       if (Page.IsPostBack)
       {
         lblTax.Text = "Your tax bill would be $";
         lblTax.Text += Convert.ToString(Convert.ToInt32(txtEarnings.Text)*Convert.ToInt32(txtTaxRate.Text)/100);
         lblTax.Visible=true;
       }
    }

</script>
<html>
<head>
    <title>Calculate Tax Bill</title>
</head>
<body>
    <h3>Tax rates 
    </h3>
    <form runat="server">
        Please enter your earnings: $ 
        <asp:TextBox id="txtEarnings" runat="server" width="80px"></asp:TextBox>
        <br />
        Please enter your tax rate, for example enter '7' for 7% 
        <asp:TextBox id="txtTaxRate" runat="server" width="30px"></asp:TextBox>
        <br />
        <asp:Button id="Button1" runat="server" Text="Submit"></asp:Button>
        <br />
        <asp:Label id="lblTax" runat="server" visible="False"></asp:Label>
        <br />
    </form>
</body>
</html>








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