How to Send Email using Asp.Net with C#

How to Send Email using Asp.Net  with C#

Design View

<div id="404message" class="popup_block">
   
       <div class="text_fild">    Name </div>
  
       <div class="text_fild"><input type="text" id="txtName" runat="server" size="30" />    <asp:RequiredFieldValidator
               ID="RequiredFieldValidator3" runat="server" ControlToValidate="txtName"  ValidationGroup="sendmail"
               ErrorMessage="Required Field" ForeColor="Red" Font-Size="XX-Small"></asp:RequiredFieldValidator>
       </div>
      
       <div class="text_fild">    Email</div>
       <div class="text_fild"><input type="text" id="txtEmail" runat="server" size="30" /><asp:RequiredFieldValidator
               ID="RequiredFieldValidator1" runat="server" ControlToValidate="txtEmail" ForeColor="Red" ValidationGroup="sendmail"
               ErrorMessage="Required Field" Font-Size="XX-Small"></asp:RequiredFieldValidator>
           <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ValidationGroup="sendmail"
               ControlToValidate="txtEmail" ErrorMessage="Invalid Email" ForeColor="Red" Font-Size="XX-Small"
               ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"></asp:RegularExpressionValidator>
       </div>

       <div class="text_fild">    Phone</div>
       <div class="text_fild"><input type="text" id="txtPhone" runat="server" size="30" /><asp:RequiredFieldValidator ValidationGroup="sendmail"
               ID="RequiredFieldValidator2" runat="server" ControlToValidate="txtPhone" ForeColor="Red" Font-Size="XX-Small"
               ErrorMessage="Required Field"></asp:RequiredFieldValidator>
       </div>
        <div class="text_fild"><textarea name="" cols="8" rows="8" id="Comment" runat="server"  style="width: 432px; height: 149px;" ></textarea>
      <asp:RequiredFieldValidator ValidationGroup="sendmail"
               ID="RequiredFieldValidator4" runat="server" ControlToValidate="Comment" ForeColor="Red" Font-Size="XX-Small"
               ErrorMessage="Required Field"></asp:RequiredFieldValidator>
        </div>
        <div class="clr"></div>
         <div class="text_fild">
       
             <asp:ImageButton ID="ImageButton1" ImageUrl="/Sitefinity/WebsiteTemplates/ABG/App_Themes/ABG/global/images/cancel_but.png"
                 runat="server" onclick="imgCancel_Click" CausesValidation="False" />
             <asp:ImageButton ID="imgSendMail" ImageUrl="/Sitefinity/WebsiteTemplates/ABG/App_Themes/ABG/global/images/submit_but.png" ValidationGroup="sendmail"
                 runat="server" onclick="imgSendMail_Click" />
           
         </div>

      
</div>












Code View








 protected void imgSendMail_Click(object sender, ImageClickEventArgs e)
    {
        send_Mail();
    }
    protected bool send_Mail()
    {
            string strBody;
            SmtpClient client = new SmtpClient();
            client.DeliveryMethod = SmtpDeliveryMethod.Network;
            client.EnableSsl = true;
            client.Host = "smtp.gmail.com";
            client.Port = 587;
            // setup Smtp authentication
            // System.Net.NetworkCredential credentials = new System.Net.NetworkCredential(fromId, "Test1234");
            System.Net.NetworkCredential credentials = new System.Net.NetworkCredential("abc@gmail.com", "abc123");
            client.UseDefaultCredentials = false;
            client.Credentials = credentials;
            MailMessage msg = new MailMessage();
            msg.From = new MailAddress(txtEmail.Value );
            msg.To.Add(new MailAddress("xyz@gmail.com"));
            msg.Subject = "Ask A Question";
            msg.IsBodyHtml = true;

         
         
           string str=Comment.Value ;

          
            msg.Body = string.Format(str);

            try
            {
                client.Send(msg);
                Page.ClientScript.RegisterStartupScript(this.GetType(), "OpenWin", "<script language='javascript'>RefreshParent()</script>");

                txtEmail.Value = "";
                txtName.Value = "";
                txtPhone.Value = "";
                Comment.Value = "";
                return true;
            }

            catch (Exception ex)
            {
                throw ex;
                //return false;
            }
            
            return true;
    }