Question

我有一个listview显示像ImageViewer这样的图像，我想在ListView中实现拖放行为。请让我知道如何在下面的自定义ListView中实现Srag-Drop。

<asp:ListView ID="lvPhotoViewer" runat="server" GroupItemCount="3" InsertItemPosition="LastItem">
    <LayoutTemplate>
        <table id="groupPlaceholderContainer" runat="server" border="1">
            <tr id="groupPlaceholder" runat="server">
            </tr>
        </table>
    </LayoutTemplate>
    <ItemTemplate>
        <td id="Td4" align="center" style="background-color: #eeeeee;">
            <asp:Image runat="server" ID="imPhoto" Height="100px" Width="100px" ImageUrl='<%# "~"+Eval("PhotoUrl") %>' />
            <br />
            <asp:Label ID="DefaultPhotIDLabel" runat="server" Text='<%# Eval("PhotoName") %>' />
        </td>
    </ItemTemplate>
    <GroupTemplate>
        <tr id="itemPlaceholderContainer" runat="server">
            <td id="itemPlaceholder" runat="server">
            </td>
        </tr>
    </GroupTemplate>
    <InsertItemTemplate>
        <td id="Td3" width="150px" height="150px" runat="server" align="center" style="background-color: #e8e8e8;
            color: #333333;">
            <asp:FileUpload ID="fileUpload" runat="server" />
        </td>
    </InsertItemTemplate>
</asp:ListView>

代码背后：

public class ImageEntity
{
    public string PhotoName { get; set; }
    public int PhotoIndex { get; set; }
    public string PhotoURL { get; set; }
}


public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        IList<ImageEntity> imagesList = new List<ImageEntity>()
        {
            new ImageEntity(){ PhotoName="House1", PhotoIndex=1, PhotoURL= @"\Images\House-01.JPG" },
            new ImageEntity(){ PhotoName="House2", PhotoIndex=2, PhotoURL= @"\Images\House-05.JPG" },
            new ImageEntity(){ PhotoName="House3", PhotoIndex=3, PhotoURL= @"\Images\house.jpg" },
            new ImageEntity(){ PhotoName="House4", PhotoIndex=4, PhotoURL= @"\Images\house2.jpg" }
        };

        lvPhotoViewer.DataSource = imagesList;
        lvPhotoViewer.DataBind();
    }
}

请为我建议一种在ListView中实现图像拖放的方法

Answer 1

考虑使用JQuery拖放式UI功能：http://jqueryui.com/demos/draggable/和http://jqueryui.com/demos/droppable/。

此外，如果您想拖放行，请查看以下内容：jQuery draggable table elements

HTH。

在ASP.Net中的ListView中拖放项目

1 个答案: