AJax+C#上传文件功能

form 配置multipart/form-data

<form id="form1" runat="server" enctype="multipart/form-data">

前台HTML

<div class="dow row pl10 pr20 pt15 pb15" <%=showForm %>>
                <div class="fl pt5">
                    <span class="dfcc fileName">
                    </span>
                </div>
                <div class="fr">
                    <div class="upload-btn rel tac cf dfcc">
                        <img src="images/upload.png" alt="">
                        上传文档
                        <input id="fupload" type="file" class="abs wh1" name="fileTrans">
                    </div>
                </div>
            </div>
            <div class="in-btn tac fb cf mt30">
                <a href="javascript:;" onclick="javascript:AddApply();" <%=showForm %>>提交审核</a>
            </div>

前台AJax

<script type="text/javascript">
        $('[name="fileTrans"]').change(function () {
            //获取到文件名
            var fileName = $.trim($('[name="fileTrans"]').val());//获取到文件
            $('.fileName').html(fileName);
        });
        function AddApply() {
            var Company = $.trim($('[name="Company"]').val());
            var Name = $.trim($('[name="Name"]').val());
            var Zip = $.trim($('[name="Zip"]').val());
            var Tel = $.trim($('[name="Tel"]').val());
            var GuDing = $.trim($('[name="GuDing"]').val());

            if (Company == "" || Name == "" || Zip == "" || Tel == "" || GuDing == "") {
                alert("请完善以上信息");
                return;
            }
            else {
                $("input[type='text'],textarea").attr("value_tagabc", function () { return $(this).val(); });


                $("input[type='checkbox'],input[type='radio']").each(function () {
                    if (this.checked) {
                        $(this).attr("checked_tagabc", "checked");
                    }
                });

                var fileUpload = $("#fupload").get(0);
                var files = fileUpload.files;

                var data = new FormData();
                for (var i = 0; i < files.length; i++) {
                    data.append(files[i].name, files[i]);
                }
                data.append('action', "AddApply");
                data.append('Company', "Company");
                data.append('Name', "Name");
                data.append('Zip', "Zip");
                data.append('Tel', "Tel");
                data.append('content', $("#myForm").html());

                $.ajax({
                    url: "/Ajax.ashx",
                    type: "POST",
                    cache: false,
                    contentType: false,
                    processData: false,
                    data: data,
                    success: function (ReturnData) {
                        if (ReturnData == "yes") {
                            window.location.href = "progress.html";
                        }
                        else {
                            alert(ReturnData);
                        }
                    }
                });
            }
        }
    </script>

后台C#

public void AddApply(HttpContext context)
    {
        Bll_Message BMessage = new Bll_Message();
        Mod_Message MMessage = new Mod_Message();

        string Company = DNTRequest.GetFormStringDecode("Company").Trim();
        string Name = DNTRequest.GetFormStringDecode("Name").Trim();
        string Zip = DNTRequest.GetFormStringDecode("Zip").Trim();
        string Tel = DNTRequest.GetFormStringDecode("Tel").Trim();
        string Content = DNTRequest.GetFormStringDecode("Content").Trim();


        string path = "/UserFiles/upload/file/";
        string pathLocal = context.Server.MapPath(path);
        if (!Directory.Exists(pathLocal))
        {
            if (pathLocal != null) Directory.CreateDirectory(pathLocal);
        }

        HttpFileCollection files = context.Request.Files;

        HttpPostedFile file = files[0];
        String[] nameArr = file.FileName.Split('.');
        string filename = Guid.NewGuid().ToString();
        string localUrl = context.Server.MapPath(path + filename + "." + nameArr[1]);
        file.SaveAs(localUrl);
        string fileUrl = path + filename + "." + nameArr[1];


        MMessage.UserID = int.Parse(StringHelper.DecryptDES(UserCookie.UserID));
        MMessage.UserName = StringHelper.DecryptDES(UserCookie.UserName);

        List<Mod_Message> list = BMessage.GetModelList("Model='apply' and Company='" + Company + "' and UserID=" + MMessage.UserID);
        if (list.Count > 0)
        {
            context.Response.Write("该企业已提交过");
            return;
        }
        MMessage.ReplyUserName = fileUrl;
        MMessage.Company = Company;
        MMessage.Name = Name;
        MMessage.Zip = Zip;
        MMessage.Tel = Tel;
        MMessage.Content = Content;
        MMessage.State = 1;
        MMessage.AddDate = DateTime.Now;
        MMessage.Model = "apply";
        BMessage.Add(MMessage);
        context.Response.Write("yes");
        return;
    }