文件上传控件第二波

上次分享了一款文件上传控件(网址:http://www.cnblogs.com/ushou/archive/2013/01/17/2865332.html),功能也比较多,但总觉得不够完美,经过近几天的发酵,酝酿,终于生产啦,吼吼~~~

这次的上传控件加入新的元素,比如附件列表展示、排序拖动、批量更新等。

俗话说,独乐乐不如众乐乐,现将关键代码分享。

一,首先在MVC中新建分部视图。

<link href="@Url.Content("~/Content/Uploadify/uploadify.css")" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="@Url.Content("~/Content/Uploadify/swfobject.js")"></script>
<script type="text/javascript" src="@Url.Content("~/Content/Uploadify/jquery.uploadify.v2.1.4.min.js")"></script>
<script src="@Url.Content("~/Content/zDialog/zDialog.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Content/zDialog/zDrag.js")" type="text/javascript"></script>
<script type="text/javascript">
    $(document).ready(function () {
        $("#uploadify").uploadify({
            'uploader': '/Content/Uploadify/uploadify.swf',
            'script': '/Ashx/UploadHandler.ashx',
            'cancelImg': '/Content/Uploadify/cancel.png',
            'folder': '/UploadFile',
            'queueID': 'fileQueue',
            'multi': true,
            'auto': true,
            'fileExt': '*.jpg;*.gif;*.png',
            'fileDesc': 'Image Files (.JPG, .GIF, .PNG)',
            'queueID': 'custom-demo',
            'queueSizeLimit': 9999,
            'simUploadLimit': 9999,
            'buttonText': '选择文件',
            'removeCompleted': true,
            'onSelectOnce': function (event, data) {
            },
            'onComplete': function (event, queueId, fileObj, response, data) {                   
                AddFiles(response.split('|')[1], response.split('|')[2]);

            },
            'onAllComplete': function (event, data) {
            }
        });
    });
</script>

二:创建两个ashx文件,两个足矣,本来还想压缩到一个的,后来想想还是算了。

这两个ashx,分别拥有以下功能。

  1,对数据库中的附件增、删、改、查。

      关键代码如下: 

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/html";
            string action = RequestExtension.GetQueryString<String>("action", "");

            if (action == "")
                return;
            MethodInfo methodInfo = this.GetType().GetMethod(action);
            if (methodInfo != null)
            {
                context.Response.Clear();
                context.Response.Write(methodInfo.Invoke(this, null));
                context.Response.End();
            }
        }

  这里action是传入函数名称,然后通过反射调用执行。

     用法也是相当简捷:

    如下示例:

   修改:

   

            $.post("/Ashx/Attachment.ashx?action=Modify", { fileID: fileID, fileName: fileName, fileDesc: fileDesc }, function (txt) {
                if (txt == "OK") {
                    diag.close();
                }
                else {
                    Dialog.alert(txt);
                }
            }, "text");

  删除:

            //发送请求到服务器删除文件
            var fileID = $(obj).parent().parent().attr("id");
            $.post("/Ashx/Attachment.ashx?action=DelFile", { fileID: fileID }, function (txt) {
                if (txt == "OK") {
                    Dialog.close();
                    var p = $(obj).parent().parent();
                    p.css('display', 'none');
                }
                else {
                    Dialog.alert(txt);
                }
            }, "text");

  其他如新建、获取用法也如此,不再细述。

三:JS中操作生成元素、与数据库交互。

    这里是新增附件、批量修改、删除附件的关键代码,中间还有页面元素拖动的功能。

    function AddFilesUseTb(fileName, fileID, imgUrl) {
        var cloneTb = $('#tbTemplete').clone().attr('id', fileID);
        $('#uploadMsg').append(cloneTb.wrap('<div></div>').parent().html());
        $("#" + fileID).find("input:eq(0)").val(fileName);

        if (imgUrl != null) {
            $("#" + fileID).find("img:eq(0)").attr("src", imgUrl);
        }

        //文件上传完成后启用sortable
        $('.gbin1-list').sortable().bind('sortupdate', function () {
            
        });
                
        //文件上传完成后,自动更新序列号
        var fileList = $('#uploadMsg').find("table");
        var fileCount = $('#uploadMsg').find("table").length;
        $.post("/Ashx/Attachment.ashx?action=Modify", { fileID: fileID, fileName: fileName, fileDesc: "", IsMove: "N", sequenceNum: fileCount }, function (txt) {
            if (txt != "OK") {
                Dialog.alert("保存名称为:" + fileName + "的文件时出错,请重试");
            }
        }, "text");
    }

    function EditAllFiles(obj) {
        var fileList = $('#uploadMsg').find("table");
        var fileCount = $('#uploadMsg').find("table").length;
        for (var i = 0; i < fileCount; i++) {
            var fileID = $(fileList[i]).parent().attr("id");
            var fileName = $(fileList[i]).find("input:eq(0)").val();
            var fileDesc = $(fileList[i]).find("textarea:eq(0)").val();
            var IsMove = $(fileList[i]).find('input:checkbox:checked').val();
            if (IsMove == "on") {
                IsMove = "Y";
            }
            else {
                IsMove = "N";
            }
            $.post("/Ashx/Attachment.ashx?action=Modify", { fileID: fileID, fileName: fileName, fileDesc: fileDesc, IsMove: IsMove, sequenceNum: i+1 }, function (txt) {
                if (txt != "OK") {
                    Dialog.alert("保存名称为:" + fileName + "的文件时出错,请重试");
                }
            }, "text");
        }

        $(obj).val("已保存");
    };

    function DelAllFiles(obj) {
        Dialog.confirm('警告:确定要删除附件?', function () {
            var fileList = $('#uploadMsg').find("table").each(function () {
                var fileID = $(this).parent().attr("id");
                var fileName = $(this).find("input:eq(0)").val();
                $.post("/Ashx/Attachment.ashx?action=DelFile", { fileID: fileID }, function (txt) {
                    if (txt != "OK") {
                        Dialog.alert("删除名称为:" + fileName + "的文件时出错,请重试");
                    }
                }, "text");
            });
        });
    }

    function DelFiles(obj) {
        Dialog.confirm('警告:确定要删除附件?', function () {

            //发送请求到服务器删除文件
            var tbSelect = $(obj).parent().parent().parent().parent().parent();
            var fileID = tbSelect.attr("id");
            $.post("/Ashx/Attachment.ashx?action=DelFile", { fileID: fileID }, function (txt) {
                if (txt == "OK") {
                    Dialog.close();
                    tbSelect.css('display', 'none');
                }
                else {
                    Dialog.alert(txt);
                }
            }, "text");
        });
    }

  

四:页如引用分部视图,只需一句话:@Html.Action("Index", "File")

    话说这MVC还真是牛掰,比asp.net简捷多了。

五:分享一下使用Dapper的分页代码。

        public KeyValuePair<Pagination, IList<AttachmentModel>> AttachmentPagination(Pagination pagin, AttachmentModel condition)
        {
            using (SqlConnection conn = DapperFactory.CrateOpenConnection())
            {
                String executeQuery = @"WITH pagintable AS(
                                        SELECT ROW_NUMBER() OVER(ORDER BY CreateDate DESC )AS RowID, ID, FileID, TabName, TabID, FileName, FileDesc, FilePath, FileTypeID, FileSize, CreateDate, CreateMan, EditDate, EditMan, IsValid, NeedMoveToMoss, IsMoveToMoss, IsTemp,SequenceNum FROM Attachment
                                        WHERE 1= 1) 
                                        SELECT * FROM pagintable where RowID between ((@CurrentPageIndex - 1)  * @PageSize) + 1  and (@CurrentPageIndex  * @PageSize)";
                String executeCount = "SELECT COUNT(*) AS CountNum FROM Attachment WHERE 1= 1";
                var mixCondition = new
                {
                    CurrentPageIndex = pagin.CurrentPageIndex,
                    PageSize = pagin.PageSize
                };
                List<AttachmentModel> listScore = conn.Query<AttachmentModel>(executeQuery, mixCondition).ToList();
                pagin.TotalItemCount = conn.Query<Int32>(executeCount, mixCondition).SingleOrDefault<Int32>();
                KeyValuePair<Pagination, IList<AttachmentModel>> result =
                    new KeyValuePair<Pagination, IList<AttachmentModel>>(pagin, listScore);
                return result;
            }
        }

  这是使用CodeSmith自动生成的代码,秒秒钟搞定,并且相当灵活及高效。

上张图:

          备注:这张图的两个附件顺序是可以拖动变更的,呵呵。

老样子,提供Demo网址,供用户试用及扒源码。

网址:http://www.kxwg.net/File/FileUpload

 

 

 

posted @ 2013-01-25 00:02  黑 瞳  阅读(3513)  评论(19编辑  收藏  举报