Update Data Using EDMF to Cloud Database With Azure

Introduction

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

Question: What is update data to cloud database using Azure?

In simple terms "It enables the update of data to the cloud database and maintenance using Azure".

Step 1: Create a cloud database named "Company".

Step 2: With the help of the manage URL navigate to a specific server page.

Manage URL: etc6zpqnyc.database.windows.net

Step 3: Company database showing up in the database server page:

Step 4: Create an employee table. The design mode of the employee table looks like this:

Step 5: Insert some data into the table:

Step 6: Open Visual Studio 2010 and create an "ASP.NET Web Forms Application", as in:

Step 7: Add an EDMF item to the project.

Step 8: Choose generate from database and click the "Next" button; see:

Step 9: Add a new connection.

Step 10: Provide the necessary server details for the connection and click ok.

Step 11: Connection is established and click the "Next" button.

Step 12: Choose the required table and click the "Finish" button.

Step 13: The created EDMF and design of data looks like this:

Step 14: The complete code of default.aspx looks like this:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="UpdateDataEFAzureApp._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 id="Head1" runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<center>

<div>

<table>

<tr>

<td colspan="2">

<asp:Label ID="Label1" runat="server" Text="Update Data to Cloud Database with Azure"

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 Id" 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 FirstName" 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>

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

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

</td>

<td>

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

</td>

</tr>

<tr>

<td>

<asp:Label ID="Label4" runat="server" Text="Please Enter Age" Font-Size="Large" Font-Names="Verdana"

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

</td>

<td>

<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>

</td>

</tr>

<tr>

<td colspan="2" align="center">

<asp:Button ID="Button2" runat="server" Text="Update Data to Cloud Database" Font-Names="Verdana"

Width="272px" BackColor="Orange" Font-Bold="True" OnClick="Button2_Click" />

</td>

</tr>

<tr>

<td colspan="2" align="center">

<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 15: 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 UpdateDataEFAzureApp

{

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

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Button2_Click(object sender, EventArgs e)

{

if (string.IsNullOrEmpty(TextBox1.Text) || string.IsNullOrEmpty(TextBox2.Text) || string.IsNullOrEmpty(TextBox3.Text) || string.IsNullOrEmpty(TextBox4.Text))

{

Label5.Text = "Please Enter Some Values"; Label5.ForeColor = System.Drawing.Color.Red;

}

else

{

CompanyEntities objCompany = new CompanyEntities();

Employee updateQuery; var id = int.Parse(TextBox4.Text);

updateQuery = (from r in objCompany.Employees where r.ID == id select r).First();

updateQuery.FirstName = TextBox1.Text;

updateQuery.LastName = TextBox2.Text;

updateQuery.Age = int.Parse(TextBox3.Text);

objCompany.SaveChanges();

Label5.Text = "Data Updated Successfully";

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

TextBox1.Text = string.Empty;

TextBox2.Text = string.Empty;

TextBox3.Text = string.Empty; TextBox4.Text = string.Empty;

}

}

}

}

Step 16: The output of the application looks like this:

Step 17: The output of table data before inserting the application looks like this:

Step 18: Data entering output of the application looks like this:

Step 19: Updated data showing on the cloud output of the application looks like this: