head>
<title>Index</title>
<style type="text/css">
#statusBorder
{
position:relative;
height:5px;
100px;
border:solid 1px gray;
display:none;
}
#statusFill{
position:absolute;
top:0;
left:0;
0px;
background-color:Blue;
height:5px;
}
</style>
<script src="../../Scripts/jquery-1.5.1.min.js" type="text/javascript"></script>
<script type="text/javascript">
var uniqueId = " @Guid.NewGuid().ToString()";
$(document).ready(function (event) {
$('#startProcess').click(function () {
$.post("Home/StartLongRunningProcess",{ id: uniqueId }, function (data) {
if (data = "null") {
alert("文件为空！");
}
else {
$('#statusBorder').show();
getStatus();
}
}, "multipart/form-data");
event.preventDefault;
});
});
function getStatus() {
var url = 'Home/GetCurrentProgress/' + uniqueId;
$.get(url, function (data) {
if (data != "100") {
$('#status').html(data);
$('#statusFill').width(data);
window.setTimeout("getStatus()", 100);
}
else {
$('#status').html("Done");
$('#statusBorder').hide();
alert("文件保存成功");
};
});
}
</script>
</head>
<body>
<div>
<div id="status">
</div>
<h2>@Html.Encode(ViewData["Message"]) </h2>
<div>
<input id="File1" type="file" name="file" />
<input id="startProcess" type="submit" value="提交" />
</div>
<br />
<div id="statusBorder">
<div id="statusFill">
</div>
</div>
</div>
</body>
</html>
Action代码
public class HomeController : Controller { // // GET: /Home/ public ActionResult Index() { ViewData["Message"] = "Ajax Progress Bar Example"; return View(); } delegate string ProcessTask(string id); MyLongRunningClass longRunningClass = new MyLongRunningClass(); public ContentResult StartLongRunningProcess(string id) { var file=Request.Files["file"]; if (file != null) { file.SaveAs(Server.MapPath("~/Content/" + file.FileName)); longRunningClass.Add(id); ProcessTask processTask = new ProcessTask(longRunningClass.ProcessLongRunningAction); processTask.BeginInvoke(id, new AsyncCallback(EndLongRunningProcess), processTask); return Content("ok"); } else { return Content("null"); } } public void EndLongRunningProcess(IAsyncResult result) { ProcessTask processTask = (ProcessTask)result.AsyncState; string id = processTask.EndInvoke(result); longRunningClass.Remove(id); } public ContentResult GetCurrentProgress(string id) { this.ControllerContext.HttpContext.Response.AddHeader("cache-control", "no-cache"); var currentProgress = longRunningClass.GetStatus(id).ToString(); return Content(currentProgress); } public ActionResult Upload(HttpPostedFileBase[] fileToUpload) { ViewBag.Message = "File(s) uploaded successfully"; return RedirectToAction("Index"); }
cs代码
public class MyLongRunningClass { private static object syncRoot = new object(); private static IDictionary<string, int> ProcessStatus { get; set; } public MyLongRunningClass() { if (ProcessStatus == null) { ProcessStatus = new Dictionary<string, int>(); } } public string ProcessLongRunningAction(string id) { for (int i = 1; i <= 100; i++) { Thread.Sleep(100); lock (syncRoot) { ProcessStatus[id] = i; } } return id; } public void Add(string id) { lock (syncRoot) { ProcessStatus.Add(id,0); } } public void Remove(string id) { lock (syncRoot) { ProcessStatus.Remove(id); } } public int GetStatus(string id) { lock (syncRoot) { if (ProcessStatus.Keys.Count(x => x == id) == 1) { return ProcessStatus[id]; } else { return 100; } } } }