Introduction
Today, in this article let's play around with one of the interesting and most useful concepts in C#.
Question: What are anonymous types?
In simple terms "It provides flexibility to define the properties with in-line coding and use them anywhere in the class. It can also be called a method without a name. When you use the anonymous defined properties they behave as strongly typed."
Step 1: Create a new "ASP.Net Web Forms Application", as in:
![open-asp.net-webform-application.jpg]()
Step 2: The complete code of webform1.aspx looks like this:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="AnonymousTypesApp.WebForm1" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<center>
<div>
<table>
<tr>
<td colspan="2" align="center">
<asp:Label ID="Label1" runat="server" Text="Arithmetic Operations with Anonymous Types in C#"
Font-Bold="true" Font-Size="Large" Font-Names="Verdana" ForeColor="Maroon"></asp:Label>
</td>
</tr>
<tr>
<td>
<asp:Label ID="Label6" runat="server" Text="Please Enter FirstNumber" Font-Size="Large"
Font-Names="Verdana" Font-Italic="true"></asp:Label>
</td>
<td>
<asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="Label2" runat="server" Text="Please Enter SecondNumber" Font-Size="Large"
Font-Names="Verdana" Font-Italic="true"></asp:Label>
</td>
<td>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td colspan="2" align="center">
<asp:Button ID="Button1" runat="server" Text="Addition" Font-Names="Verdana" Width="213px"
BackColor="Orange" Font-Bold="True" OnClick="Button1_Click" />
</td>
</tr>
<tr>
<td colspan="2" align="center">
<asp:Button ID="Button2" runat="server" Text="Substraction" Font-Names="Verdana"
Width="213px" BackColor="Orange" Font-Bold="True" OnClick="Button2_Click" />
</td>
</tr>
<tr>
<td colspan="2" align="center">
<asp:Button ID="Button3" runat="server" Text="Multiplication" Font-Names="Verdana"
Width="213px" BackColor="Orange" Font-Bold="True" OnClick="Button3_Click" />
</td>
</tr>
<tr>
<td colspan="2" align="center">
<asp:Button ID="Button4" runat="server" Text="Division" Font-Names="Verdana" Width="213px"
BackColor="Orange" Font-Bold="True" OnClick="Button4_Click" />
</td>
</tr>
<tr>
<td colspan="2" align="center">
<asp:Label ID="Label5" runat="server" Font-Bold="true" Font-Names="Verdana"></asp:Label>
</td>
</tr>
</table>
</div>
</center>
</form>
</body>
</html>
Step 3: The complete code of webform1.aspx.cs looks like this:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace AnonymousTypesApp
{
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
TextBox4.Focus();
}
protected void Button1_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(TextBox4.Text) || string.IsNullOrEmpty(TextBox1.Text))
{
Label5.Text = "Please Enter Some Values"; Label5.ForeColor = System.Drawing.Color.Red;
}
else
{
var additionType = new
{
FirstNumber = double.Parse(TextBox4.Text), SecondNumber = double.Parse(TextBox1.Text) };
Label5.Text = "Addition Result is " + (additionType.FirstNumber + additionType.SecondNumber).ToString();
Label5.ForeColor = System.Drawing.Color.Green;
TextBox1.Text = string.Empty;
TextBox4.Text = string.Empty;
}
}
protected void Button2_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(TextBox4.Text) || string.IsNullOrEmpty(TextBox1.Text))
{
Label5.Text = "Please Enter Some Values"; Label5.ForeColor = System.Drawing.Color.Red;
}
else
{
var substractionType = new
{
FirstNumber = double.Parse(TextBox4.Text), SecondNumber = double.Parse(TextBox1.Text) };
Label5.Text = "Substraction Result is " + (substractionType.FirstNumber - substractionType.SecondNumber).ToString();
Label5.ForeColor = System.Drawing.Color.Green; TextBox1.Text = string.Empty;
TextBox4.Text = string.Empty;
}
}
protected void Button3_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(TextBox4.Text) || string.IsNullOrEmpty(TextBox1.Text))
{
Label5.Text = "Please Enter Some Values";
Label5.ForeColor = System.Drawing.Color.Red;
}
else
{
var multiplicationType = new
{
FirstNumber = double.Parse(TextBox4.Text), SecondNumber = double.Parse(TextBox1.Text) };
Label5.Text = "Multiplication Result is " + (multiplicationType.FirstNumber * multiplicationType.SecondNumber).ToString();
Label5.ForeColor = System.Drawing.Color.Green;
TextBox1.Text = string.Empty;
TextBox4.Text = string.Empty;
}
}
protected void Button4_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(TextBox4.Text) || string.IsNullOrEmpty(TextBox1.Text))
{
Label5.Text = "Please Enter Some Values";
Label5.ForeColor = System.Drawing.Color.Red;
}
else
{
var divisionType = new
{ FirstNumber = double.Parse(TextBox4.Text), SecondNumber = double.Parse(TextBox1.Text) };
Label5.Text = "Division Result is " + (divisionType.FirstNumber / divisionType.SecondNumber).ToString();
Label5.ForeColor = System.Drawing.Color.Green;
TextBox1.Text = string.Empty; TextBox4.Text = string.Empty;
}
}
}
}
Step 4: The output of the application looks like this:
![arithmetic-operations-in-CSharp.jpg]()
Step 5: The addition operation output of the application looks like this:
![annoymous-arithmetic-operations-in-CSharp.jpg]()
I hope this article is useful for you.