.NET ---- 借助repeater在行中进行下拉框编辑 （前端赋值给下拉框）

需求：在本行中进行下拉框编辑

实现

1、借助 onItemDataBound 事件绑定 RepeaterCOrder_ItemDataBound 方法

Repeater数据控件的两个重要事件ItemDataBound 和 ItemCommand

• ItemDataBound：数据绑定的时候（正在进行时）发生。
•  ItemCommand ：用来响应Item模板中的控件的事件。

借助的控件，

asp:HiddenField 控件给修改后的下拉框赋值 

asp:DropDownList 控件进行编辑

asp:ListItem  下拉框中有哪些值

因为分为编辑和查看两种形式，所以在查看的时候使用了asp:Label 进行绑定， 

asp:DropDownList  与 asp:Label  通过   Visible="false/true" 属性控制显示与隐藏 

    <asp:Repeater ID="RepeaterCOrder" runat="server" onitemdatabound="RepeaterCOrder_ItemDataBound">
    <ItemTemplate>

 <tr>

  <td  style="white-space: nowrap" align="center" ><%--是否有进货支出，0否1是--%>
                              
                     <asp:HiddenField ID="HiddenFielIs_InStock" runat="server" Value='<%# DataBinder.Eval(Container.DataItem,"Is_InStock") %>' />
                      <asp:DropDownList ID="ddlIs_InStock" runat="server" width="71px">
                          <asp:ListItem Text="否" Value="0"></asp:ListItem>
                          <asp:ListItem Text="是" Value="1"></asp:ListItem>
                      </asp:DropDownList>

                    <%--  <asp:TextBox ID="tbIs_InStock" Visible="true" runat="server" Text='<%# Convert.ToInt32(DataBinder.Eval(Container.DataItem,"Is_InStock")) == 1 ? "是" :"否" %>'></asp:TextBox>--%>

                      <asp:Label Visible="false" ID="LabelIs_InStock" runat="server" Text='<%# Convert.ToInt32(DataBinder.Eval(Container.DataItem,"Is_InStock")) == 1 ? "是" :"否" %>'></asp:Label>
           &nbsp;</td>
</tr>

    </ItemTemplate>
    </asp:Repeater>

后端在页面加载的时候需要完成上述

    {//是否有进货支出，0否1是
           //获取隐藏域中的 
            HiddenField HiddenFielIs_InStock = (HiddenField)e.Item.FindControl("HiddenFielIs_InStock");
            DropDownList ddlIs_InStock = (DropDownList)e.Item.FindControl("ddlIs_InStock");
            // TextBox tbIs_InStock = (TextBox)e.Item.FindControl("tbIs_InStock");

            //将隐藏域中的值赋值给下拉框
            if(ddlIs_InStock != null && HiddenFielIs_InStock != null)
            {
　　　　　　　　　　//ddlLoad_Files(ddlDealer_Level_4053_Guid,"Dealer_Level_4053_Guid");   //后端给下拉框的下拉项 ListItem  赋值 ，封装个 ddlLoad_Files(DropDownList ddl,string sFilesKey) 方法统一赋值
                 ddlIs_InStock.SelectedValue = HiddenFielIs_InStock.Value;
            }

            //修改下拉框样式
            if(ddlIs_InStock != null)
            {
                base.SetDropDownListStyleLineBlack(ddlIs_InStock,51);
            }
            //控制显示隐藏
            if(_Edit == "show")
            {
                Label LabelIs_InStock = (Label)e.Item.FindControl("LabelIs_InStock");
                if(LabelIs_InStock != null && ddlIs_InStock != null)
                {
                    ddlIs_InStock.Visible = false;
                    LabelIs_InStock.Visible = true;
                }
            }
        }

2、保存的时候

单个

  <asp:LinkButton ID="LinkButtonSave" runat="server" CommandName='<%# Container.ItemIndex %>' CommandArgument='<%# DataBinder.Eval(Container.DataItem,"iNumber") %>' OnClick="Rpbtn_SaveAll_Click"><img src="../../qdadmin/qdimages/Save.png" border="0" title="保存"></asp:LinkButton>

批量

       <asp:LinkButton ID="LinkButtonSave" runat="server"  OnClick="Rpbtn_SaveAll_Click"><img src="../../qdadmin/qdimages/edit_24_bc_red.png" border="0" title="批量保存"></asp:LinkButton>

先调用

    protected void Rpbtn_SaveAll_Click(object sender,EventArgs e)
    {
        LinkButton btn = (LinkButton)sender;
        if(Rpbtn_SaveAll(btn.CommandArgument) > 0)
        {
            WebMessageBox1.MessageBox_tishi(Master,300,200,"成功更新成功");
            HtmlTableLoad(_iPagePrve);
        }
        else
        {
            WebMessageBox1.MessageBox_tishi(Master,300,200,"数据更新失败");
        }
    }

统一调用

    protected int Rpbtn_SaveAll(string sindexORguid)
    {
        LabelEditMsg.Text = string.Empty;
        ITEM.Inherits.Bll.qdMis4.bllCOrder _bllcorder = new ITEM.Inherits.Bll.qdMis4.bllCOrder();
        int k = 0;
        List<string> strsqlList = new List<string>();
        for(int i = 0; i <= this.RepeaterCOrder.Items.Count - 1; i++)
        {
            Label LabeliNumber = (Label)this.RepeaterCOrder.Items[i].FindControl("LabeliNumberX");
            HiddenField HidOrderGuidX = (HiddenField)this.RepeaterCOrder.Items[i].FindControl("HidOrderGuid");
            if(LabeliNumber == null || HidOrderGuidX == null)
                continue;

            if(sindexORguid != string.Empty)
            {
                if(!(sindexORguid == LabeliNumber.Text || sindexORguid == HidOrderGuidX.Value))
                    continue;
            }
            string strsql = "update tbCOrder set ";
            HiddenField HidOrderGuid = (HiddenField)this.RepeaterCOrder.Items[i].FindControl("HidOrderGuid");
            if(HidOrderGuid == null || HidOrderGuid.Value == "")
                continue;
            string sign = string.Empty;
          

             {//是否有进货支出，0否1是
                DropDownList ddlIs_InStock = (DropDownList)this.RepeaterCOrder.Items[i].FindControl("ddlIs_InStock");

               // TextBox tbIs_InStock = (TextBox)this.RepeaterCOrder.Items[i].FindControl("tbIs_InStock");
                try
                {
                    int d = Convert.ToInt32(ddlIs_InStock.SelectedValue);
                    strsql += sign + "Is_InStock=" + d + "";
                    sign = ",";
                }
                catch(Exception ex)
                {
                    LabelEditMsg.Text = "请输入是否有进货支出，0否1是";
                    return -1;
                }
            }
}