Create A Communications Application In ASP.NET 4.5.2 Using Visual Studio 2015

Introduction

In this article, you will learn how to create communications applications, like an email applications, using C#, ASP.NET, and Visual Studio 2015 Update 3.

Requirements

Visual Studio 2015 Update 3
ASP.NET 4.5.2

If you want to develop communications applications, you should follow the steps, mentioned below.

Step 1

Open Visual Studio 2015 Update 3, go to the File >> New >> Project. Or, use the shortcut key - "Ctrl+Shift +N".

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Step 2

Now, select Visual C# >> Web >> ASP.NET Web Application. Finally, click "OK" button.

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Step 3

Here, you can select the template for your ASP.NET application. We are choosing "Empty" here. Now, click OK button.

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Step 4

Now, open the project and look for the Solution Explorer .

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Step 5

Here, open the default .aspx. If you want a Web form, you can add the page (Web form) Add+New item (Ctrl+Shift+A).

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Step 6

Now, we can build the design using drag and drop method. Open the toolbox, if you want some options there. It should be like the textbox, label, and so on.

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Step 7

Here is the default.aspx code.

Default.aspx code

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="communi.aspx.cs" Inherits="communication.communi" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<link href="style.css" rel="stylesheet" type="text/css" />
<style type="text/css">
.auto-style1 {
width: 100%;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div id="from">
<h1>ASP.Net COMMUNICATION APPLICATION</h1>
</div>
<div id="fromone">
<table class="auto-style1">
<tr>
<td>
<asp:Label ID="Label1" runat="server" Text="To(E-Mail Address)"></asp:Label>
</td>
<td>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="Label" runat="server" Text="Subject"></asp:Label>
</td>
<td>
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
</td>
</tr>
</table> <br />
<asp:Label ID="Label2" runat="server" Text="Message"></asp:Label><br />
<asp:TextBox ID="TextBox3" TextMode="MultiLine" runat="server" Height="82px" Width="357px"></asp:TextBox><br />
<asp:Button ID="Button1" runat="server" Text="SEND" /><br />
<asp:Label ID="Label3" runat="server" Text="Label"></asp:Label>
</div>
</form>
</body>
</html>

Step 8

Now, first of all, declare the header file, because this project is based on SMTP (Simple Mail Transfer Protocol).

using System.Net.Mail;

Here, fill in the C# code.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net.Mail;
namespace communication {
public partial class communi: System.Web.UI.Page {
protected void Page_Load(object sender, EventArgs e) {}
protected void Button1_Click(object sender, EventArgs e) {
SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
SmtpServer.Port = 587;
SmtpServer.Credentials = new System.Net.NetworkCredential("[email protected]", "muthu@123");
}
}
}

Step 9

Here, you can see the output.

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Step 10

Afterwards, add the File upload option in the Communication application.

Now, add the FileUpload control. Make use of the drag method.

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Step 11

Here, you can see the C# code.

Step 12

Now, you can see default.aspx code.

<asp:FileUpload ID="FileUpload1" runat="server" />

Step 13

Now, you have the option of mailing with file upload feature.

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The file is uploaded and you can see the final output.

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