public void requirements_delete(int ID)
 {
     requirements.Delete(ID);
     Insert_requirements_GridView.DataBind();
     Update_requirements_GridView.DataBind();
     Delete_requirements_GridView.DataBind();
 }
 public requirements requirements_insert()
 {
     requirements.requirement_desc = Insert_requirement_desc_txt.Text;
     requirements = requirements.Insert(requirements);
     Insert_requirements_GridView.DataBind();
     Update_requirements_GridView.DataBind();
     Delete_requirements_GridView.DataBind();
     return(requirements);
 }
 public requirements requirements_update(int ID)
 {
     requirements                  = requirements.Select(ID);
     requirements.req_id           = Convert.ToInt32(Update_req_id_txt.Text);
     requirements.requirement_desc = Update_requirement_desc_txt.Text;
     requirements.Update(requirements);
     Insert_requirements_GridView.DataBind();
     Update_requirements_GridView.DataBind();
     Delete_requirements_GridView.DataBind();
     return(requirements);
 }