Textbox TextChanged is Firing but not changing

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I have a TextBox TextChanged firing but when I enter a different Email Address and tab or click to the next textbox to fire the change nothing happens. I ran the program again and nothing happens. Why is this happening? Did I do something wrong? I even refreshed the page and entered in a different Email Address and the samething happened. Can someone help me with this?

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;
using System.Web.Security;
using System.Security.Cryptography;

public partial class SubmitPage : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
       if (IsPostBack)
        {
            SqlConnection con = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["PasswordConnectionString"].ConnectionString);
            con.Open();
            string cmdStr = "Select count(*) from TableSecurity where EmailAddress='" + TextBoxEA.Text + "'";
            SqlCommand userExist = new SqlCommand(cmdStr, con);
            SqlCommand cmd = new SqlCommand("select INST_ID, EmailAddress from TableSecurity", con);
            int temp = Convert.ToInt32(userExist.ExecuteScalar().ToString());
            if (temp == 1)
            {
                lblMessage.Text = "User Name Already Exist!!!";
            }
        }
    }

    protected void Submit_Click(object sender, EventArgs e)
    {
        SqlConnection con = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["PasswordConnectionString"].ConnectionString);
        con.Open();
        string cmdStr = "Select INST_ID, accessLevel, EmailAddress from TableCEO where EmailAddress='" + TextBoxEA.Text + "'";
        string cmdStr2 = "Select INST_ID, accessLevel, EmailAddress from TableIALO where EmailAddress='" + TextBoxEA.Text + "'";
        string insCmd = "Insert into TableSecurity (EmailAddress, Password, INST_ID, accessLevel) values (@EmailAddress, @Password, @INST_ID, @accessLevel)";
        string insCmd2 = "Insert into TableSecurity (EmailAddress, Password, INST_ID, accessLevel) values (@EmailAddress, @Password, @INST_ID, @accessLevel)";
        SqlCommand insertUser = new SqlCommand(insCmd, con);
        SqlCommand insertUser2 = new SqlCommand(insCmd2, con);
        insertUser.Parameters.AddWithValue("@EmailAddress", TextBoxEA.Text);
        insertUser.Parameters.AddWithValue("@Password", TextBoxPW.Text);
        insertUser.Parameters.AddWithValue("@INST_ID", TextBoxINST_ID.Text);
        insertUser.Parameters.AddWithValue("@accessLevel", TextBoxaccessLevel.Text);
        
        try
        {
            insertUser.ExecuteNonQuery();
            con.Close();
            Response.Redirect("Login.aspx");
        }
        catch (Exception er)
        {
            lblMessage.Text = "User Already Exist";
        }
        finally
        {
        }
    }

    protected void TextBoxEA_TextChanged(object sender, EventArgs e)
    {
            SqlConnection con = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["PasswordConnectionString"].ConnectionString);
            con.Open();
            
            SqlCommand scmd = new SqlCommand("Select INST_ID, EmailAddress, accessLevel from TableCEO where EmailAddress = '" + TextBoxEA.Text + "'", con);
            SqlCommand scmd2 = new SqlCommand("Select INST_ID, EmailAddress, accessLevel from TableIALO where EmailAddress = '" + TextBoxEA.Text + "'", con);
            SqlDataReader dr = scmd.ExecuteReader();
            SqlDataReader dr2 = scmd.ExecuteReader();

            if (dr.Read())
            if (dr2.Read())
            
                {
                    TextBoxINST_ID.Text = dr["INST_ID"].ToString();
                    TextBoxaccessLevel.Text = dr["accessLevel"].ToString();
                    TextBoxINST_ID.Text = dr2["INST_ID"].ToString();
                    TextBoxaccessLevel.Text = dr2["accessLevel"].ToString();
                    
                }
            dr.Close();
            dr2.Close();
            con.Close();
        }
    }

It fires for the first connection but not the second connection. Why is that?

Posted 30-Oct-13 3:40am

Computer Wiz99

Updated 30-Oct-13 3:56am

v4

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Richard C Bishop · Accepted Answer · 2013-10-30T04:05:00

In your textchanged event, you are using "scmd" instead of scmd2 for your dr2 SqlDataReader. So your first Select statement is getting called twice.

[EDIT]

I altered your code, try something like this:

protected void TextBoxEA_TextChanged(object sender, EventArgs e)
  {
          using (SqlConnection con = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["PasswordConnectionString"].ConnectionString))
          {
              con.Open();

          SqlCommand scmd = new SqlCommand("Select INST_ID, EmailAddress, accessLevel from TableCEO where EmailAddress = @TextBoxEA", con);
          SqlCommand scmd2 = new SqlCommand("Select INST_ID, EmailAddress, accessLevel from TableIALO where EmailAddress = @TextBoxEA", con);

          scmd.Parameters.Add(new SqlParameter("@TextBoxEA", TextBoxEA.Text));
          scmd2.Parameters.Add(new SqlParameter("@TextBoxEA", TextBoxEA.Text));

          using (SqlDataReader dr = scmd.ExecuteReader())
          {
              while(dr.Read())
              {
                 TextBoxINST_ID.Text = dr["INST_ID"].ToString();
                 TextBoxaccessLevel.Text = dr["accessLevel"].ToString();
              }
          }

          using (SqlDataReader dr2 = scmd2.ExecuteReader())
          {
              while(dr2.Read())
              {
                 TextBoxINST_ID.Text = dr2["INST_ID"].ToString();
                 TextBoxaccessLevel.Text = dr2["accessLevel"].ToString();
              }
          }

        }
      }