Gridview 动态添加行

                  /// <summary>   

      /// 首次加载绑定    

     /// </summary>   

      private void DataLoad()         {

                            list.Add(new Product());       

                            this.GVProduct.DataSource = list;  

                           this.GVProduct.DataBind();         

                            ViewState["list"] = list;

                                                         }

        /// <summary>  

       /// 添加行     

    /// </summary>    

     private void AddRow()         {     

                list = (List<Product>)ViewState["list"];   

          for (int i = 0; i <  this.GVProduct.Rows.Count; i++)         {     

            Product mod = new Product();  

            mod.People = int.Parse((GVProduct.Rows[i].Cells[3].FindControl("txtPeople") as TextBox).Text.ToString());  

            mod.Price = int.Parse((GVProduct.Rows[i].Cells[1].FindControl("txtPrice") as TextBox).Text.ToString());   

              mod.Size = int.Parse((GVProduct.Rows[i].Cells[3].FindControl("txtSize") as TextBox).Text.ToString());    

             list.Add(mod);         

    }      

       list.Add(new Product());     

        ViewState["list"] = list;

         this.GVProduct.DataSource = list;

       this.GVProduct.DataBind();               }

        /// <summary>

        /// 删除行

        /// </summary>

        private void DeleteRow() {

            list = (List<Product>)ViewState["list"];

            for (int i = this.GVProduct.Rows.Count - 1; i >= 0; i--)             {

              list[i].People = int.Parse((GVProduct.Rows[i].Cells[3].FindControl("txtPeople") as TextBox).Text.ToString());

              list[i].Price = int.Parse((GVProduct.Rows[i].Cells[1].FindControl("txtPrice") as TextBox).Text.ToString());    

              list[i].Size = int.Parse((GVProduct.Rows[i].Cells[3].FindControl("txtSize") as TextBox).Text.ToString());  

             CheckBox ck = GVProduct.Rows[i].FindControl("ckitem") as CheckBox;  

               if (ck.Checked)        {    

                 list.RemoveAt(i);  

               }                

              ViewState["list"] = list;   

              GVProduct.DataSource = list;      

           GVProduct.DataBind();        

     }               

  }