Convert input in TextBox into decimal : TextBox « ASP.net Controls « ASP.NET Tutorial






<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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>Simple Calculator</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <h1>The Simple Calculator</h1>
        First number:
        <asp:TextBox ID="txtFirst" runat="server" />  
        <br /><br />
        Second number:
        <asp:TextBox ID="txtSecond" runat="server" />  
        <br /><br />
        <asp:Button ID="btnAdd" runat="server"   
            OnClick="btnAdd_Click" Text="Add" />
        <br /><br />
        The answer is:
        <asp:Label ID="lblAnswer" runat="server" />  
    </div>
    </form>
</body>
</html>

File: Default.aspx.cs

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;


public partial class _Default : System.Web.UI.Page 
{
    protected void btnAdd_Click(object sender, EventArgs e)
    {
        decimal a = decimal.Parse(txtFirst.Text);
        decimal b = decimal.Parse(txtSecond.Text);
        decimal c = a + b;
        lblAnswer.Text = c.ToString();
    }
}








3.5.TextBox
3.5.1.Important properties, method and event of TextBox control
3.5.2.TextBox can display different types of input fields depending TextMode property
3.5.3.Show AutoComplete
3.5.4.Set the focus to a TextBox
3.5.5.Get input value from asp:textbox (VB.net)
3.5.6.Set textbox text value in button action
3.5.7.asp:TextBox changed event (C#)
3.5.8.Use if statement to check form input data (VB.net)
3.5.9.Bind string value to asp:textBox (VB.net)
3.5.10.Use Cint to convert input value in asp:textbox to integer (VB)
3.5.11.Use Convert.ToInt32 to convert input value in asp:textbox to integer (C#)
3.5.12.Check form input value and report error in case of empty input (VB.net)
3.5.13.Set AutoCompleteType
3.5.14.Convert input in TextBox into decimal
3.5.15.Extrapolate date values from the typed text