checkListbox的使用

 
 <asp:CheckBoxList ID="ddMaterial"    runat="server">
                                            </asp:CheckBoxList>
 
 为checklistbox绑定list
  TbSortMaterialList designerList = TbSortMaterial.GetTbSortMaterialListNoPage();

            for (int i = 0; i < designerList.Count; i++)
            {
                string text = designerList[i].MaterialName;
                string value = (designerList[i].MaterialId).ToString();
                ddMaterial.Items.Add(new ListItem(text, value));
            }
 
 
 
 从数据库查出选中显示时，在数据库里保存形式是以逗号隔开的value
 string[] arr = tgobj.ProductMaterial.Split(',');
            for (int i = 0; i < arr.Length-1; i++)
            {
                for (int J = 0; J < ddMaterial.Items.Count; J++)
                {
                    if (ddMaterial.Items[J].Value == arr[i].ToString())
                    {
                        ddMaterial.Items[J].Selected = true;
                    }
                }
               
            }
           
           
           
           
 修改提交保存时
 
   string material ="";
            for (int i = 0; i < ddMaterial.Items.Count; i++)
            {
                if (ddMaterial.Items[i].Selected)
                {
                    material += ddMaterial.Items[i].Value + ",";
                }
            }