How to assign the cell row in a string using devexpress web form tools

string cid = row.Cells[1].Text; // Error in this line

public void chkStatus_OnCheckedChanged(object sender, EventArgs e)
{
     public void chkStatus_OnCheckedChanged(object sender, EventArgs e)
    {     
        ASPxCheckBox chkStatus = (ASPxCheckBox)sender;
        GridViewDataRowTemplateContainer row = chkStatus.NamingContainer as GridViewDataRowTemplateContainer;
        string cid = row.Cells[1].Text; // Error in this line
      
        bool status = chkStatus.Checked;
    
        string constr = ConfigurationManager.ConnectionStrings["BuckshawHomesConnectionString"].ConnectionString;
        string query = "UPDATE [tblHouseImage] SET Active = @Approved WHERE HouseImageID = @HouseImageID";
    
        SqlConnection con = new SqlConnection(constr);
        SqlCommand com = new SqlCommand(query, con);
        com.Parameters.AddWithValue("@Approved", status);
        com.Parameters.AddWithValue("@HouseImageID", cid);
        con.Open();
        com.ExecuteNonQuery();
        con.Close();
        grid.DataBind();         
    }    
}