ASP.NET

<br />
protected void Button1_Click(object sender, EventArgs e)<br />
    {<br />
        try<br />
        {<br />
            MailMessage mail = new MailMessage();<br />
            mail.From = new MailAddress("shankarganesh.mca@gmail.com");<br />
            mail.To.Add(new MailAddress("shankarganesh.mca@gmail.com"));<br />
            mail.Subject = "Subject";<br />
            mail.Body = "This is Body";<br />
            mail.IsBodyHtml = true;<br />
            mail.Priority = MailPriority.Normal;<br />
            SmtpClient client = new SmtpClient();<br />
            client.Send(mail);<br />
        }<br />
        catch (SmtpException ex)<br />
        {<br />
            Response.Write(ex.InnerException);<br />
        }<br />
    }

        SqlConnection conn = new SqlConnection(ConnectionPath);
        conn.Open();
        string queryClasses = "SELECT WSS_Content.dbo.AllDocs.LeafName FROM 
WSS_Content.dbo.AllDocs LEFT OUTER JOIN WSS_Content.dbo.RecycleBin ON WSS_Content.dbo.AllDocs.Id = 
WSS_Content.dbo.RecycleBin.DocId WHERE (WSS_Content.dbo.RecycleBin.DocId IS NULL) AND (WSS_Content.dbo.AllDocs.Extension = 'zip')";
        SqlCommand availableClasses = new SqlCommand(queryClasses, conn);
        SqlDataReader reader = availableClasses.ExecuteReader();
        SQLQueryClassListings.DataSource = reader;
        SQLQueryClassListings.DataBind();
        reader.Close();

    <asp:GridView ID="SQLQueryClassListings" AutoGenerateColumns="false" runat="server" 
BorderWidth="1px" BackColor="White" CellPadding="5" BorderColor="DodgerBlue" HeaderStyle-
BackColor="#0147FA" HeaderStyle-ForeColor="White">
        <Columns>
        <asp:BoundField HeaderText="Class Titles" DataField="LeafName" />
        <asp:ButtonField ButtonType="Button" HeaderText="Register" Text="Register"/>
        </Columns>
    </asp:GridView>