protected void btnInsert_Click(object sender, EventArgs e)
        {
            DBOps db = new DBOps();

            string _key   = txtInsertLab.Text.Trim();
            string bldg   = txtInsertBuilding.Text.Trim();
            string _value = txtInsertRoom.Text.Trim();

            if ((_key != String.Empty && _key != "") || (bldg != String.Empty && bldg != "") || (_value != String.Empty && _value != ""))
            {
                int retval = db.InsertLabsTable(_key, bldg, _value);
                if (retval > 0)
                {
                    txtInsertLab.Text       = "";
                    txtInsertBuilding.Text  = "";
                    txtInsertRoom.Text      = "";
                    lblInsertInfo.ForeColor = System.Drawing.Color.LightSeaGreen;
                    lblInsertInfo.Text      = retval.ToString() + " row inserted";
                    lblInsertInfo.DataBind();
                }
            }
            else
            {
                lblErr.Text = "Please Enter all necessary fields before clicking on \"Insert\" ";
                lblErr.DataBind();
            }



            RefreshTable();
        }