Update SQL Variable Pass Problem

Sorry to bother you.
 
I am trying to create an Update Form. There is only one Field that can be edited on this form – agencydesc
  (Agency Description).
  I’m trying to perform the update to the Database the .Net way and I am definitely having some trouble. The form is loaded from the file AgencyEdit.aspx. An Image Button does a Server.Transfer to AgencyUPD.aspx where the update is completed. When AgencyEdit.aspx is loaded the Agency Description is pre-populated in TextBox1. When the value of TextBox1 is changed, the change does not show when the variable is passed to AgencyUPD.aspx, the value remains the initial populated value from the Database. Any help would greatly be appreciated.
 
Relevant CS Code from AgencyEdit.aspx
 


      public string myBase;


      public int eSernum;


      public string eAgency;


      public string eDesc;


      protected System.Web.UI.WebControls.ImageButton ImageButton3;


 
     protected System.Web.UI.WebControls.TextBox TextBox1;


       


      public string myTest


      {


     
      get {return this.TextBox1.Text;}


      }


       


      private void Page_Load(object sender, System.EventArgs e)


      {


      string myUrl = Application.Contents["Base"] + Common/Login.aspx";


      if (Session["isLogged"] == null) Response.Redirect(myUrl);


           


      myBase = Application.Contents["Base"].ToString();


      int mySernum = Int32.Parse(Request.QueryString["sernum"]);


           

SqlConnection con1 = new SqlConnection(Application.Contents["EwsConnectionString"].ToString());


      SqlDataReader drsLog1;


      SqlCommand cmd1 = new SqlCommand();


 


      con1.Open();


     
 


      cmd1.CommandText = "SELECT * FROM ewsagencies WHERE sernum = " + mySernum;


      cmd1.Connection = con1;


      drsLog1 = cmd1.ExecuteReader(CommandBehavior.CloseConnection);


       


      while (drsLog1.Read())


       {


       eSernum = drsLog1.GetInt32(0);


       eAgency = drsLog1.GetString(1);


       if (!drsLog1.IsDBNull(2)) eDesc = drsLog1.GetString(2);


       }


      con1.Close();


      this.TextBox1.Text = eDesc;
  


      }

 


      private void ImageButton3_Click(object sender, System.Web.UI.ImageClickEventArgs e)


      {


       Server.Transfer("AgencyUPD.aspx");


      }

 
 
Relevant CS Code from AgencyUPD.aspx

 

 

namespace VWeb.vAdmin.Agencies

{


 public class AgencyUPD : System.Web.UI.Page


 {


   public AgencyEdit SourcePage;


  

private void Page_Load(object sender, System.EventArgs e)


      {


      AgencyEdit SourcePage = (AgencyEdit) Context.Handler;


      int mySernum = SourcePage.eSernum;


      string myDesc = SourcePage.myTest;

 

SqlConnection conUpdate = new SqlConnection(Application.Contents["EwsConnectionString"].ToString());


      SqlCommand cmd1 = new SqlCommand();

 


      conUpdate.Open();


     
 


      cmd1.CommandText = "UPDATE ewsagencies SET agencydesc = @desc WHERE sernum = " + mySernum;


      cmd1.Parameters.Add("@desc", SqlDbType.VarChar).Value = myDesc;


      cmd1.Connection = conUpdate;

 


      cmd1.ExecuteNonQuery();

 


      conUpdate.Close();


      string myUrl = Application.Contents["Base"] + "vAdmin/Agencies/AgencyList.aspx";


      Response.Redirect(myUrl);

}

 


            #region Web Form Designer generated code .. etc.


      }

}