protected void txtLocCode_TextChanged(object sender, EventArgs e)
        {
            string lcode = txtLocCode.Text;

            if (lcode == "" || lcode == "00")
            {
                txtLocDesc.Text    = "";
                txtLocDesc.Enabled = false;
                txtSubLocCode_TextChanged(txtSubLocCode, EventArgs.Empty);

                btnSaveMainLoc.Enabled = false;
                btnDeleteMain.Enabled  = false;
                return;
            }
            if (myFunc.isLocCodeExist(lcode))
            {
                txtLocDesc.Enabled      = true;
                txtLocDesc.Text         = myFunc.GetLocDesc(lcode);
                btnSubLocLookup.Enabled = true;
                txtSubLocCode.Enabled   = true;


                btnSaveMainLoc.Enabled = true;
                btnDeleteMain.Enabled  = true;
            }
            else
            {
                txtLocDesc.Enabled = true;
                txtLocDesc.Text    = "";
                txtLocDesc.Focus();

                btnSubLocLookup.Enabled = false;
                txtSubLocCode.Enabled   = true;
                txtSubCodeDesc.Enabled  = true;
                btnSaveSubLoc.Visible   = true;
                btnSaveSubLoc.Enabled   = true;

                btnSaveMainLoc.Enabled = true;
                btnDeleteMain.Enabled  = false;
            }

            txtSubLocCode_TextChanged(txtSubLocCode, EventArgs.Empty);
        }