Sharepoint 列表 附件 小功能

代码如下：

Page_Load方法

       cblattCase.Items.Clear();



                for (int i = 0; i < item.Attachments.Count; i++)

                {

                    cblattCase.Items.Add(new ListItem("<a href='" + GetSPListItemAttachmentUrl(item, i) + "' target='_black'>" + item.Attachments[i] + "<a>", i.ToString()));

                }

附件添加及删除

 /// <summary>

    /// 添加附件

    /// </summary>

    /// <param name="sender"></param>

    /// <param name="e"></param>

    protected void btnUploadCase_OnClick(object sender, EventArgs e)

    {

        string id = Request["id"];

        if (id == null)

        {

            ShowErr("请先保存草稿");

            return;

        }

        if (fudCase.FileBytes.Length == 0)

        {

            ShowErr("请先选择上传文件");

            return;

        }

        //SPList list = SPContext.Current.Web.Lists["servicerequest"];



        SPListItem item = null;

        //case附件删除

        item = list.Items.GetItemById(int.Parse(Request["id"]));

        //case附件上传 

        for (int i = 0; i < item.Attachments.Count; i++)

        {

            if (fudCase.FileName == item.Attachments[i])

            {

                ShowErr("文件名重复！");

                return;

            }

        }

        item.Attachments.Add(fudCase.FileName, fudCase.FileBytes);

        item.Update();

        //刷新控件



        cblattCase.Items.Clear();





        for (int i = 0; i < item.Attachments.Count; i++)

        {

            cblattCase.Items.Add(new ListItem("<a href='" + GetSPListItemAttachmentUrl(item, i) + "' target='_black'>" + item.Attachments[i] + "<a>", i.ToString()));

        }



    }

    public static string GetSPListItemAttachmentUrl(SPListItem item, int index)

    {



        return item.Attachments.UrlPrefix + item.Attachments[index];

    }

    /// <summary>

    /// 删除附件

    /// </summary>

    /// <param name="sender"></param>

    /// <param name="e"></param>

    protected void btnDelCase_OnClick(object sender, EventArgs e)

    {

        if (id == null)

        {

            ShowErr("请先保存草稿");

            return;

        }





        SPListItem item = null;

        //case附件删除

        item = list.Items.GetItemById(int.Parse(Request["id"]));

        List<string> attName = new List<string>();

        if (item.Attachments.Count > 0)

        {

            int tmpIndex = 0;

            foreach (ListItem lItem in cblattCase.Items)

            {

                if (lItem.Selected)

                {

                    attName.Add(item.Attachments[tmpIndex]);

                }

                tmpIndex++;

            }



            for (int i = 0; i < attName.Count; i++)

            {

                item.Attachments.Delete(attName[i]);

            }

            item.Update();

        }



        //刷新控件



        cblattCase.Items.Clear();



        for (int i = 0; i < item.Attachments.Count; i++)

        {

            cblattCase.Items.Add(new ListItem("<a href='" + GetSPListItemAttachmentUrl(item, i) + "' target='_black'>" + item.Attachments[i] + "<a>", item.Attachments[i]));

        }



    }

 

前端代码:

           <tr>

                <td class="padding" colspan="6" height="30">

                    <asp:FileUpload ID="fudCase" runat="server" CssClass="textboxCss1"  width="500"/>

                    <asp:Button ID="btnUploadCase" runat="server"  Text="上传附件" OnClick="btnUploadCase_OnClick" CssClass="textboxCss1" />

                    <asp:Button ID="btnDelCase" runat="server"  Text="删除附件" OnClick="btnDelCase_OnClick" CssClass="textboxCss1" />

                </td>

            </tr>

            <tr>

                <td style="padding:8px;" colspan="3">

                    <asp:CheckBoxList ID="cblattCase" runat="server" AutoPostBack="false"></asp:CheckBoxList>

                </td>

            </tr>