关于使用客户端控件和jquery上传文件

$.ajaxFileUpload({
//type: "post",
fileElementId: "importFile",
url: "../ashx/BaseInfo/StationManage.ashx",
data: { parapath: "i", action: "import" },
dataType: "json",
secureuri: false,
success: function (json) {
},
error: function () {
Common.ShowAlert("提示", "访问服务器失败或数据返回格式错误", function () { });
}
});

<p><span class="label">选择文件：</span><input type="file" id="importFile" name="importFile" /></p>

HttpFileCollection postedFile = context.Request.Files;
HttpFileCollection postedFile2 = HttpContext.Current.Request.Files;
string savePath = context.Server.MapPath(("/UploadFile\\") + postedFile[0].FileName);//Server.MapPath 获得虚拟服务器相对路径

postedFile[0].SaveAs(savePath);