Arithmetic Operations Hosting on Cloud With Windows Azure

Vijay Prativadi
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Introduction

Today, in this article let's play around with one of the interesting and most useful concepts in Windows Azure.

Question: What is hosting arithmetic operations using Azure?

In simple terms "It enables creation of a new web form arithmetic application and serves to host it across cloud based environments using Windows Azure".

Step 1: Open visual studio 2010 and create an "ASP.NET Web Forms Application", as in:

asp.net-web-application.jpg

Step 2: The complete code of IArithmetic.cs looks like this:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace AzureApp

{

public interface IArthmetic

{

double Add(double a, double b);

double Sub(double a, double b);

double Mul(double a, double b);

double Div(double a, double b);

}

Step 3: The complete code of Arithmetic.cs looks like this:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

namespace AzureApp

{

public class Arthmetic : IArthmetic

{

public double Add(double a, double b)

{

return a + b;

}

public double Sub(double a, double b)

{

return a - b;

}

public double Mul(double a, double b)

{ return a * b;

}

public double Div(double a, double b)

{

return a / b;

}

Step 4: The complete code of Default.aspx looks like this:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="AzureApp._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

</head>

<body>

<div>

<table>

<tr>

<asp:Label ID="Label1" runat="server" Text="Arthmetic Operations - Azure App" Font-Bold="true"

Font-Size="Large" Font-Names="Verdana" ForeColor="Maroon"></asp:Label>

</td>

</tr>

<tr>

<td>

<asp:Label ID="Label3" runat="server" Text="Please Enter First Number" Font-Size="Large"

Font-Names="Verdana" Font-Italic="true"></asp:Label>

</td>

<td>

<asp:TextBox ID="TextBox2" runat="server" Width="120px"></asp:TextBox>

</td>

</tr>

<tr>

<td>

<asp:Label ID="Label2" runat="server" Text="Please Enter Second Number" Font-Size="Large"

Font-Names="Verdana" Font-Italic="true"></asp:Label>

</td>

<td>

<asp:TextBox ID="TextBox1" runat="server" Width="120px"></asp:TextBox>

</td>

</tr>

<tr>

<asp:Button ID="Button1" runat="server" Text="Addition" Font-Names="Verdana" Width="213px"

BackColor="Orange" Font-Bold="True" OnClick="Button1_Click" />

</td>

</tr>

<tr>

<asp:Button ID="Button2" runat="server" Text="Substraction" Font-Names="Verdana"

Width="213px" BackColor="Orange" Font-Bold="True" OnClick="Button2_Click" />

</td>

</tr>

<tr>

<asp:Button ID="Button3" runat="server" Text="Multiplication" Font-Names="Verdana"

Width="213px" BackColor="Orange" Font-Bold="True" OnClick="Button3_Click" />

</td>

</tr>

<tr>

<asp:Button ID="Button4" runat="server" Text="Division" Font-Names="Verdana" Width="213px"

BackColor="Orange" Font-Bold="True" OnClick="Button4_Click" />

</td>

</tr>

<tr>

<asp:Label ID="Label5" runat="server" Font-Bold="true" Font-Names="Verdana" ForeColor="Maroon"></asp:Label>

</td>

</tr>

</table>

</div>

</center>

</form>

</body>

</html>

Step 5: The complete code of Default.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 AzureApp

{

public partial class _Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

this.TextBox2.Focus();

}

protected void Button1_Click(object sender, EventArgs e)

{

if (string.IsNullOrEmpty(TextBox1.Text) || string.IsNullOrEmpty(TextBox2.Text))

{

Label5.Text = "Please Enter Some Values";

Label5.ForeColor = System.Drawing.Color.Red;

}

else

{

Label5.Text = string.Format("Addition of {0} and {1} is <b>{2}</b>", TextBox1.Text, TextBox2.Text, objArthmetic.Add(double.Parse(TextBox1.Text), double.Parse(TextBox2.Text)).ToString());

TextBox1.Text = string.Empty;TextBox2.Text = string.Empty;

}

protected void Button2_Click(object sender, EventArgs e)

{

if (string.IsNullOrEmpty(TextBox1.Text) || string.IsNullOrEmpty(TextBox2.Text)){Label5.Text = "Please Enter Some Values";

Label5.ForeColor = System.Drawing.Color.Red;

}

else{Label5.Text = string.Format("Substraction of {0} and {1} is <b>{2}</b>", TextBox1.Text, TextBox2.Text, objArthmetic.Sub(double.Parse(TextBox1.Text), double.Parse(TextBox2.Text)).ToString());

TextBox1.Text = string.Empty;TextBox2.Text = string.Empty;

}

protected void Button3_Click(object sender, EventArgs e)

{

if (string.IsNullOrEmpty(TextBox1.Text) || string.IsNullOrEmpty(TextBox2.Text))

{

Label5.Text = "Please Enter Some Values";

Label5.ForeColor = System.Drawing.Color.Red;

}

else

{

Label5.Text = string.Format("Multiplication of {0} and {1} is <b>{2}</b>", TextBox1.Text, TextBox2.Text, objArthmetic.Mul(double.Parse(TextBox1.Text), double.Parse(TextBox2.Text)).ToString());

TextBox1.Text = string.Empty;TextBox2.Text = string.Empty;

}

protected void Button4_Click(object sender, EventArgs e)

{

if (string.IsNullOrEmpty(TextBox1.Text) || string.IsNullOrEmpty(TextBox2.Text)){Label5.Text = "Please Enter Some Values";

Label5.ForeColor = System.Drawing.Color.Red;

}

else

{

Label5.Text = string.Format("Division of {0} and {1} is <b>{2}</b>", TextBox1.Text, TextBox2.Text, objArthmetic.Div(double.Parse(TextBox1.Text), double.Parse(TextBox2.Text)).ToString());

TextBox1.Text = string.Empty;TextBox2.Text = string.Empty;

}

#region Instance MembersArthmetic objArthmetic = new Arthmetic();

#endregion

}

Step 6: Now right-click on the project and create a Windows Azure Cloud Service Project, as in:

Step 7: Configuration file output of the application looks like this:

Step 8: Click on publish for the Azure project and dialogue box appears as shown below:

Step 9: Download the credentials by clicking on sign in to download credentials:

Step 10: Import the downloaded file and click the "Finish" button:

Step 11: Give a name to the application and select hosting center:

Step 12: Manage the publish settings and click the "Next" button, as in:

Step 13: Verify the publish summary and click the "Finish" button, as in:

Step 14: Verify the Activity log for the status and when completed navigate to the website URL; see:

Step 15: The output of the application hosted in cloud looks like this:

Step 16: The data entering output of the application hosted in cloud looks like this:

Step 17: The addition operation output of the application hosted in cloud looks like this:

Step 18: The complete code of ServiceConfiguration.Cloud.cscfg looks like this:

<?xml version="1.0" encoding="utf-8" ?>

<serviceconfiguration servicename="AzureApp.Azure" xmlns="http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceConfiguration"

="" osfamily="1" osversion="*" schemaversion="2012-05.1.7">

</ConfigurationSettings>

</Role>

</serviceconfiguration>

Step 19: The complete code of ServiceConfiguration.Local.cscfg looks like this:

<?xml version="1.0" encoding="utf-8" ?>

<serviceconfiguration servicename="AzureApp.Azure" xmlns="http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceConfiguration"

="" osfamily="1" osversion="*" schemaversion="2012-05.1.7">

</ConfigurationSettings>

</Role>

</serviceconfiguration>

Step 20: The complete code of ServiceDefinition.csdef looks like this:

<?xml version="1.0" encoding="utf-8" ?>

<servicedefinition name="AzureApp.Azure" xmlns="http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceDefinition"

schemaversion="2012-05.1.7">

<Sites>

</Bindings>

</Site>

</Sites>

</Endpoints>

</Imports>

</WebRole>

</servicedefinition>

I hope this article is useful for you.