Question

我有一个转发器控件来显示指定文件夹中的一些图片。中继器具有图像和内部按钮以删除该图像。但问题是如何在按钮点击事件中达到该图像名称？这是我的代码：

Aspx文件：

<asp:Repeater ID="rptImage" runat="server">
            <ItemTemplate>
                <asp:Button id="btnDelete" runat="server" Text="DELETE" OnClick="btnDelete_Click"  />
                <asp:Image ID="image" runat="server"  ImageUrl='<%# Container.DataItem %>' />

            </ItemTemplate>
        </asp:Repeater>

CS档案：

private void getImages(string serialNo)
    {
        try
        {
            string[] filesindirectory = Directory.GetFiles(Server.MapPath("~/Images/" + serialNo + "/"));
            List<String> images = new List<string>(filesindirectory.Count());

            foreach (string item in filesindirectory)
            {
                images.Add(String.Format("~/Images/" + serialNo + "/{0}", System.IO.Path.GetFileName(item)));
            }

            rptImage.DataSource = images;
            rptImage.DataBind();
        }
        catch (Exception)
        {
            header.Visible = true;

        }

    }

    protected void btnDelete_Click(object sender, EventArgs e)
    {
        //string imgUrl;
        //The url of image is all i need to delete it

    }

Answer 1

使用Button的CommandName，CommandArgument和OnCommand属性。

protected void Btn_Click(object sender, CommandEventArgs e)
{
    if (e.CommandName == "BtnClick"){
        e.CommandArgument.ToString();
    }
}

<asp:Repeater ID="rptImage" runat="server">
      <ItemTemplate>
          <asp:Button id="btnDelete" runat="server" Text="DELETE"  OnCommand="Btn_Click" CommandName="Btn_Click" CommandArgument="<%# Container.DataItem %>"  />
          <asp:Image ID="image" runat="server"  ImageUrl="<%# Container.DataItem %>" />
      </ItemTemplate>
</asp:Repeater>

如何从另一个子控件访问父控件的子控件？

1 个答案: