สอบถาม เรื่องการส่งEmail เวลาลืมรหัสผ่าน c# โปรแกรมแจ้งว่า An exception of type 'System.Net.Mail.SmtpException' occurred in System.dll but was not handled in user code Additional information: Cannot get IIS pickup directory.

using System;
using System.Data.SqlClient;
using System.Configuration;
using System.Data;
using System.Net.Mail;

 protected void btnPass_Click(object sender, EventArgs e)
        {
            string strConnection = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;

            string strSelect = "SELECT Emp_ID,Password FROM Employee WHERE Email = @Email";
           

        SqlConnection connection = new SqlConnection(strConnection);
        SqlCommand command = new SqlCommand();
        command.Connection = connection;
        command.CommandType = CommandType.Text;
        command.CommandText = strSelect;
      

        SqlParameter email = new SqlParameter("@Email", SqlDbType.NVarChar, 50);         
        email.Value = txtEmail.Text.Trim().ToString();         
        command.Parameters.Add(email);
        

      

        DataSet dsPwd = new DataSet();
       
        SqlDataAdapter dAdapter = new SqlDataAdapter(command);
           
        connection.Open();
         
        dAdapter.Fill(dsPwd);
          
        connection.Close();
         
        if (dsPwd.Tables[0].Rows.Count > 0)
              
        {
              
            MailMessage loginInfo = new MailMessage();
             
            loginInfo.To.Add(txtEmail.Text.ToString());
           
            loginInfo.From = new MailAddress("[email protected]");
            
            loginInfo.Subject = "Forgot Password Information";
            

            loginInfo.Body = "Emp_ID: " + dsPwd.Tables[0].Rows[0]["Emp_ID"] + "<br><br>Password: " + dsPwd.Tables[0].Rows[0]["Password"] + "<br><br>";
               
            loginInfo.IsBodyHtml = true;
              
            SmtpClient smtp = new SmtpClient();
             
            smtp.Host = "smtp.gmail.com";
             
            smtp.Port = 587;
           
            smtp.EnableSsl = true;
               
            smtp.Credentials = new System.Net.NetworkCredential("[email protected]", "0973453452");
             
            smtp.Send(loginInfo);
                
            lblMessage.Text = "Password is sent to you email id";
            
        }
          
        else

        {
                
            lblMessage.Text = "Email Address Not Registered";
              
        }
        }

using System;
using System.Data;
using System.Data.SqlClient;
using System.Net.Mail;

 protected void Button1_Click(object sender, EventArgs e)
        {
            try
            {
                
                DataSet ds = new DataSet();
                using (SqlConnection con = new SqlConnection("Data Source = WINCTRL-Q43GRTD ;Initial Catalog=Honey;Persist Security Info=True;User ID=sa;Password=0384758347"))
                {
                    con.Open();
                    SqlCommand cmd = new SqlCommand("SELECT Emp_ID,Password,Email FROM Employee Where Email= '" + TextBox1.Text.Trim() + "'", con);
                    SqlDataAdapter da = new SqlDataAdapter(cmd);
                    da.Fill(ds);
                    con.Close();
                }
                if (ds.Tables[0].Rows.Count > 0)
                {
                    //Label1.Text = "Your Password Details Sent to your mail";
                    //TextBox1.Text = "";
                    MailMessage Msg = new MailMessage();
                    
                    Msg.From = new MailAddress(TextBox1.Text);
                    
                    

                    SmtpClient smtp = new SmtpClient();
                    smtp.Port = 587;
                    smtp.EnableSsl = true;


                    smtp.Credentials = new System.Net.NetworkCredential("[email protected]", "0973453452");
                    smtp.Host = "smtp.gmail.com";
                    
                    smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
                    smtp.UseDefaultCredentials = false;
                    Msg.To.Add(TextBox1.Text);
                    Msg.IsBodyHtml = true;
                    Msg.Subject = "Your Password Details";
                    Msg.Body = "Hi, <br/>Please check your Login Detailss<br/><br/>Your Username: " + ds.Tables[0].Rows[0]["Emp_ID"] + "<br/><br/>Your Password: " + ds.Tables[0].Rows[0]["Password"] + "<br/><br/>";
                    smtp.Send(Msg);
                   
                    Label1.Text = "Your Password Details Sent to your mail";

                    TextBox1.Text = "";
                }
                else
                {
                    Label1.Text = "The Email you entered not exists.";
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("{0} Exception caught.", ex);
            }
        }