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Friday, 1 April 2016

Email Sending In Asp.Net C#

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Sending Email To Gmail Account In Asp.Net C#


In this Post I will explain about send email using Gmail SMTP Server in ASP.Net.The main thing to remember  To send email with Gmail SMTP Server, you will need to use  a Gmail account having a valid email address and password and along with that you will need the Gmail SMTP Mail Server settings.

Properties for MailMessage Class

Required properties of the MailMessage class.are:
From – Sender’s email address
To – Recipient(s) Email Address
CC – Carbon Copies (if any)
BCC – Blind Carbon Copies (if any)
Subject – Subject of the Email 
Body – Body of the Email
IsBodyHtml – Specify whether body contains text or HTML mark up.
Attachments – Attachments (if any)
ReplyTo – ReplyTo Email address.

Properties of SMTP Class

Required properties of the SMTP class.are:

Host – SMTP Server URL (Gmail: smtp.gmail.com)
EnableSsl – Specify whether your host accepts SSL Connections (Gmail: True)
UseDefaultCredentials – Set to True in order to allow authentication based on the Credentials of the       Account used to send emails
Credentials – Valid login credentials for the SMTP server (Gmail: email address and password)
Port – Port Number of the SMTP server (Gmail: 587)
Lets move to the Design phase. Firstly we have to design our WebPage. On your New Selected Web Fom write following code:

<table border="0" cellpadding="0" cellspacing="0">
    <tr>
        <td style="width: 80px">
            To:
        </td>
        <td>
            <asp:TextBox ID="txtTo" runat="server"></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td>
            &nbsp;
        </td>
    </tr>
    <tr>
        <td>
            Subject:
        </td>
        <td>
            <asp:TextBox ID="txtSubject" runat="server"></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td>
            &nbsp;
        </td>
    </tr>
    <tr>
        <td valign = "top">
           Message Body:
        </td>
        <td>
            <asp:TextBox ID="txtBody" runat="server" TextMode = "MultiLine" Height = "150" Width = "200"></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td>
            &nbsp;
        </td>
    </tr>
    <tr>
        <td>
            File Attachment:
        </td>
        <td>
            <asp:FileUpload ID="fuAttachment" runat="server" />
        </td>
    </tr>
    <tr>
        <td>
            &nbsp;
        </td>
    </tr>
    <tr>
        <td>
       Gmail Email:
        </td>
        <td>
            <asp:TextBox ID="txtEmail" runat="server"></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td>
            &nbsp;
        </td>
    </tr>
    <tr>
        <td>
            Gmail Password:
        </td>
        <td>
            <asp:TextBox ID="txtPassword" runat="server" TextMode = "Password"></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td>
            &nbsp;
        </td>
    </tr>
    <tr>
        <td>
        </td>
        <td>
            <asp:Button Text="Send" OnClick="SendEmail" runat="server" />
        </td>
    </tr>
</table>

Now switch to the code behind window by double clicking on Send Button and write down following code :

protected void SendEmail(object sender, EventArgs e)
{
    using (MailMessage mm = new MailMessage(txtEmail.Text, txtTo.Text))
    {
        mm.Subject = txtSubject.Text;
        mm.Body = txtBody.Text;
        if (fuAttachment.HasFile)
        {
            string FileName = Path.GetFileName(fuAttachment.PostedFile.FileName);
            mm.Attachments.Add(new Attachment(fuAttachment.PostedFile.InputStream, FileName));
        }
        mm.IsBodyHtml = false;
        SmtpClient smtp = new SmtpClient();
        smtp.Host = "smtp.gmail.com";
        smtp.EnableSsl = true;
        NetworkCredential NetworkCred = new NetworkCredential(txtEmail.Text, txtPassword.Text);
        smtp.UseDefaultCredentials = true;
        smtp.Credentials = NetworkCred;
        smtp.Port = 587;
        smtp.Send(mm);
        ClientScript.RegisterStartupScript(GetType(), "alert", "alert('Email sent.');", true);
    }
}

That's it. Now you able to send a email to any gmail account.
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