C# 使用MVC操作中的信号器集线器
接下来，我将尝试显示长操作中各个步骤的进度。基于该示例，我能够成功地模拟中心内的长时间操作，并在每个步骤中将更新报告给客户端 更进一步，我现在想用C# 使用MVC操作中的信号器集线器,c#,asp.net-mvc,signalr,C#,Asp.net Mvc,Signalr,接下来，我将尝试显示长操作中各个步骤的进度。基于该示例，我能够成功地模拟中心内的长时间操作，并在每个步骤中将更新报告给客户端 更进一步，我现在想用[HttpPost]属性显示在MVC操作方法中发生的实时、长时间运行的进程的状态 问题是我似乎无法从中心上下文更新客户端。我意识到我必须创建一个中心上下文来使用中心进行通信。我知道的一个区别是我必须使用hubContext.Clients.All.sendMessage（）VS.hubContext.Clients.Caller.sendMessage
[HttpPost]hubContext.Clients.All.sendMessage（）hubContext.Clients.Caller.sendMessage（）在示例中列出。根据我在
我应该能够使用示例中所述的Clients.Caller
，但我仅限于在hub类中使用它。主要地，我只是想了解为什么我不能从动作方法中得到信号
我提前感谢你的帮助
我已经像这样创建了我的OWINStartup（）
类…
using System;
using System.Threading.Tasks;
using Microsoft.Owin;
using Owin;
[assembly: OwinStartup(typeof(HL7works.Startup))]
namespace HL7works
{
public class Startup
{
public void Configuration(IAppBuilder app)
{
app.MapSignalR();
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Microsoft.AspNet.SignalR;
namespace HL7works
{
public class ProgressHub : Hub
{
public string msg = string.Empty;
public int count = 0;
public void CallLongOperation()
{
Clients.Caller.sendMessage(msg, count);
}
}
}
// POST: /Task/ParseToExcel/
[HttpPost]
public ActionResult ParseToExcel(HttpPostedFileBase[] filesUpload)
{
// Initialize Hub context
var hubContext = GlobalHost.ConnectionManager.GetHubContext<ProgressHub>();
hubContext.Clients.All.sendMessage("Initalizing...", 0);
double fileProgressMax = 100.0;
int currentFile = 1;
int fileProgress = Convert.ToInt32(Math.Round(currentFile / fileProgressMax * 100, 0));
try
{
// Map server path for temporary file placement (Generate new serialized path for each instance)
var tempGenFolderName = SubstringExtensions.GenerateRandomString(10, false);
var tempPath = Server.MapPath("~/" + tempGenFolderName + "/");
// Create Temporary Serialized Sub-Directory
System.IO.FileInfo thisFilePath = new System.IO.FileInfo(tempPath + tempGenFolderName);
thisFilePath.Directory.Create();
// Iterate through PostedFileBase collection
foreach (HttpPostedFileBase file in filesUpload)
{
// Does this iteration of file have content?
if (file.ContentLength > 0)
{
// Indicate file is being uploaded
hubContext.Clients.All.sendMessage("Uploading " + Path.GetFileName(file.FileName), fileProgress);
file.SaveAs(thisFilePath + file.FileName);
currentFile++;
}
}
// Initialize new ClosedXML/Excel workbook
var hl7Workbook = new XLWorkbook();
// Start current file count at 1
currentFile = 1;
// Iterate through the files saved in the Temporary File Path
foreach (var file in Directory.EnumerateFiles(tempPath))
{
var fileNameTmp = Path.GetFileName(file);
// Update status
hubContext.Clients.All.sendMessage("Parsing " + Path.GetFileName(file), fileProgress);
// Initialize string to capture text from file
string fileDataString = string.Empty;
// Use new Streamreader instance to read text
using (StreamReader sr = new StreamReader(file))
{
fileDataString = sr.ReadToEnd();
}
// Do more work with the file, adding file contents to a spreadsheet...
currentFile++;
}
// Delete temporary file
thisFilePath.Directory.Delete();
// Prepare Http response for downloading the Excel workbook
Response.Clear();
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.AddHeader("content-disposition", "attachment;filename=\"hl7Parse_" + DateTime.Now.ToString("MM-dd-yyyy") + ".xlsx\"");
// Flush the workbook to the Response.OutputStream
using (MemoryStream memoryStream = new MemoryStream())
{
hl7Workbook.SaveAs(memoryStream);
memoryStream.WriteTo(Response.OutputStream);
memoryStream.Close();
}
Response.End();
}
catch (Exception ex)
{
ViewBag.TaskMessage =
"<div style=\"margin-left:15px;margin-right:15px\" class=\"alert alert-danger\">"
+ "<i class=\"fa fa-exclamation-circle\"></i> "
+ "An error occurred during the process...<br />"
+ "-" + ex.Message.ToString()
+ "</div>"
;
}
return View();
}
@using (Html.BeginForm("ParseToExcel", "Task", FormMethod.Post, new { enctype = "multipart/form-data", id = "parseFrm" }))
{
<!-- File Upload Row -->
<div class="row">
<!-- Select Files -->
<div class="col-lg-6">
<input type="file" multiple="multiple" accept=".adt" name="filesUpload" id="filesUpload" />
</div>
<!-- Upload/Begin Parse -->
<div class="col-lg-6 text-right">
<button id="beginParse" class="btn btn-success"><i class="fa fa-download"></i> Parse and Download Spreadsheet</button>
</div>
</div>
}
<!-- Task Progress Row -->
<div class="row">
<!-- Space Column -->
<div class="col-lg-12">
</div>
<!-- Progress Indicator Column -->
<script type="text/javascript" language="javascript">
$(document).ready(function () {
$('.progress').hide();
$('#beginParse').on('click', function () {
$('#parseFrm').submit();
})
$('#parseFrm').on('submit', function (e) {
e.preventDefault();
$.ajax({
url: '/Task/ParseToExcel',
type: "POST",
//success: function () {
// console.log("done");
//}
});
// initialize the connection to the server
var progressNotifier = $.connection.progressHub;
// client-side sendMessage function that will be called from the server-side
progressNotifier.client.sendMessage = function (message, count) {
// update progress
UpdateProgress(message, count);
};
// establish the connection to the server and start server-side operation
$.connection.hub.start().done(function () {
// call the method CallLongOperation defined in the Hub
progressNotifier.server.callLongOperation();
});
});
});
function UpdateProgress(message, count) {
// get status div
var status = $("#status");
// set message
status.html(message);
// get progress bar
if (count > 0) {
$('.progress').show();
}
$('.progress-bar').css('width', count + '%').attr('aria-valuenow', count);
$('.progress-bar').html(count + '%');
}
</script>
<div class="col-lg-12">
<div id="status">Ready</div>
</div>
<div class="col-lg-12">
<div class="progress">
<div class="progress-bar" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="min-width:20px;">
0%
</div>
</div>
</div>
</div>
<!-- Task Message Row -->
<div class="row">
<div clss="col-lg-12">
@Html.Raw(ViewBag.TaskMessage)
</div>
</div>
e.preventDefault();
$.ajax({
url: '/Task/ParseToExcel',
type: "POST",
data: new FormData( this ),
processData: false,
contentType: false,
//success: function () {
// console.log("done");
//}
});
我的中心是这样写的…
using System;
using System.Threading.Tasks;
using Microsoft.Owin;
using Owin;
[assembly: OwinStartup(typeof(HL7works.Startup))]
namespace HL7works
{
public class Startup
{
public void Configuration(IAppBuilder app)
{
app.MapSignalR();
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Microsoft.AspNet.SignalR;
namespace HL7works
{
public class ProgressHub : Hub
{
public string msg = string.Empty;
public int count = 0;
public void CallLongOperation()
{
Clients.Caller.sendMessage(msg, count);
}
}
}
// POST: /Task/ParseToExcel/
[HttpPost]
public ActionResult ParseToExcel(HttpPostedFileBase[] filesUpload)
{
// Initialize Hub context
var hubContext = GlobalHost.ConnectionManager.GetHubContext<ProgressHub>();
hubContext.Clients.All.sendMessage("Initalizing...", 0);
double fileProgressMax = 100.0;
int currentFile = 1;
int fileProgress = Convert.ToInt32(Math.Round(currentFile / fileProgressMax * 100, 0));
try
{
// Map server path for temporary file placement (Generate new serialized path for each instance)
var tempGenFolderName = SubstringExtensions.GenerateRandomString(10, false);
var tempPath = Server.MapPath("~/" + tempGenFolderName + "/");
// Create Temporary Serialized Sub-Directory
System.IO.FileInfo thisFilePath = new System.IO.FileInfo(tempPath + tempGenFolderName);
thisFilePath.Directory.Create();
// Iterate through PostedFileBase collection
foreach (HttpPostedFileBase file in filesUpload)
{
// Does this iteration of file have content?
if (file.ContentLength > 0)
{
// Indicate file is being uploaded
hubContext.Clients.All.sendMessage("Uploading " + Path.GetFileName(file.FileName), fileProgress);
file.SaveAs(thisFilePath + file.FileName);
currentFile++;
}
}
// Initialize new ClosedXML/Excel workbook
var hl7Workbook = new XLWorkbook();
// Start current file count at 1
currentFile = 1;
// Iterate through the files saved in the Temporary File Path
foreach (var file in Directory.EnumerateFiles(tempPath))
{
var fileNameTmp = Path.GetFileName(file);
// Update status
hubContext.Clients.All.sendMessage("Parsing " + Path.GetFileName(file), fileProgress);
// Initialize string to capture text from file
string fileDataString = string.Empty;
// Use new Streamreader instance to read text
using (StreamReader sr = new StreamReader(file))
{
fileDataString = sr.ReadToEnd();
}
// Do more work with the file, adding file contents to a spreadsheet...
currentFile++;
}
// Delete temporary file
thisFilePath.Directory.Delete();
// Prepare Http response for downloading the Excel workbook
Response.Clear();
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.AddHeader("content-disposition", "attachment;filename=\"hl7Parse_" + DateTime.Now.ToString("MM-dd-yyyy") + ".xlsx\"");
// Flush the workbook to the Response.OutputStream
using (MemoryStream memoryStream = new MemoryStream())
{
hl7Workbook.SaveAs(memoryStream);
memoryStream.WriteTo(Response.OutputStream);
memoryStream.Close();
}
Response.End();
}
catch (Exception ex)
{
ViewBag.TaskMessage =
"<div style=\"margin-left:15px;margin-right:15px\" class=\"alert alert-danger\">"
+ "<i class=\"fa fa-exclamation-circle\"></i> "
+ "An error occurred during the process...<br />"
+ "-" + ex.Message.ToString()
+ "</div>"
;
}
return View();
}
@using (Html.BeginForm("ParseToExcel", "Task", FormMethod.Post, new { enctype = "multipart/form-data", id = "parseFrm" }))
{
<!-- File Upload Row -->
<div class="row">
<!-- Select Files -->
<div class="col-lg-6">
<input type="file" multiple="multiple" accept=".adt" name="filesUpload" id="filesUpload" />
</div>
<!-- Upload/Begin Parse -->
<div class="col-lg-6 text-right">
<button id="beginParse" class="btn btn-success"><i class="fa fa-download"></i> Parse and Download Spreadsheet</button>
</div>
</div>
}
<!-- Task Progress Row -->
<div class="row">
<!-- Space Column -->
<div class="col-lg-12">
</div>
<!-- Progress Indicator Column -->
<script type="text/javascript" language="javascript">
$(document).ready(function () {
$('.progress').hide();
$('#beginParse').on('click', function () {
$('#parseFrm').submit();
})
$('#parseFrm').on('submit', function (e) {
e.preventDefault();
$.ajax({
url: '/Task/ParseToExcel',
type: "POST",
//success: function () {
// console.log("done");
//}
});
// initialize the connection to the server
var progressNotifier = $.connection.progressHub;
// client-side sendMessage function that will be called from the server-side
progressNotifier.client.sendMessage = function (message, count) {
// update progress
UpdateProgress(message, count);
};
// establish the connection to the server and start server-side operation
$.connection.hub.start().done(function () {
// call the method CallLongOperation defined in the Hub
progressNotifier.server.callLongOperation();
});
});
});
function UpdateProgress(message, count) {
// get status div
var status = $("#status");
// set message
status.html(message);
// get progress bar
if (count > 0) {
$('.progress').show();
}
$('.progress-bar').css('width', count + '%').attr('aria-valuenow', count);
$('.progress-bar').html(count + '%');
}
</script>
<div class="col-lg-12">
<div id="status">Ready</div>
</div>
<div class="col-lg-12">
<div class="progress">
<div class="progress-bar" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="min-width:20px;">
0%
</div>
</div>
</div>
</div>
<!-- Task Message Row -->
<div class="row">
<div clss="col-lg-12">
@Html.Raw(ViewBag.TaskMessage)
</div>
</div>
e.preventDefault();
$.ajax({
url: '/Task/ParseToExcel',
type: "POST",
data: new FormData( this ),
processData: false,
contentType: false,
//success: function () {
// console.log("done");
//}
});
我的控制器…
using System;
using System.Threading.Tasks;
using Microsoft.Owin;
using Owin;
[assembly: OwinStartup(typeof(HL7works.Startup))]
namespace HL7works
{
public class Startup
{
public void Configuration(IAppBuilder app)
{
app.MapSignalR();
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Microsoft.AspNet.SignalR;
namespace HL7works
{
public class ProgressHub : Hub
{
public string msg = string.Empty;
public int count = 0;
public void CallLongOperation()
{
Clients.Caller.sendMessage(msg, count);
}
}
}
// POST: /Task/ParseToExcel/
[HttpPost]
public ActionResult ParseToExcel(HttpPostedFileBase[] filesUpload)
{
// Initialize Hub context
var hubContext = GlobalHost.ConnectionManager.GetHubContext<ProgressHub>();
hubContext.Clients.All.sendMessage("Initalizing...", 0);
double fileProgressMax = 100.0;
int currentFile = 1;
int fileProgress = Convert.ToInt32(Math.Round(currentFile / fileProgressMax * 100, 0));
try
{
// Map server path for temporary file placement (Generate new serialized path for each instance)
var tempGenFolderName = SubstringExtensions.GenerateRandomString(10, false);
var tempPath = Server.MapPath("~/" + tempGenFolderName + "/");
// Create Temporary Serialized Sub-Directory
System.IO.FileInfo thisFilePath = new System.IO.FileInfo(tempPath + tempGenFolderName);
thisFilePath.Directory.Create();
// Iterate through PostedFileBase collection
foreach (HttpPostedFileBase file in filesUpload)
{
// Does this iteration of file have content?
if (file.ContentLength > 0)
{
// Indicate file is being uploaded
hubContext.Clients.All.sendMessage("Uploading " + Path.GetFileName(file.FileName), fileProgress);
file.SaveAs(thisFilePath + file.FileName);
currentFile++;
}
}
// Initialize new ClosedXML/Excel workbook
var hl7Workbook = new XLWorkbook();
// Start current file count at 1
currentFile = 1;
// Iterate through the files saved in the Temporary File Path
foreach (var file in Directory.EnumerateFiles(tempPath))
{
var fileNameTmp = Path.GetFileName(file);
// Update status
hubContext.Clients.All.sendMessage("Parsing " + Path.GetFileName(file), fileProgress);
// Initialize string to capture text from file
string fileDataString = string.Empty;
// Use new Streamreader instance to read text
using (StreamReader sr = new StreamReader(file))
{
fileDataString = sr.ReadToEnd();
}
// Do more work with the file, adding file contents to a spreadsheet...
currentFile++;
}
// Delete temporary file
thisFilePath.Directory.Delete();
// Prepare Http response for downloading the Excel workbook
Response.Clear();
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.AddHeader("content-disposition", "attachment;filename=\"hl7Parse_" + DateTime.Now.ToString("MM-dd-yyyy") + ".xlsx\"");
// Flush the workbook to the Response.OutputStream
using (MemoryStream memoryStream = new MemoryStream())
{
hl7Workbook.SaveAs(memoryStream);
memoryStream.WriteTo(Response.OutputStream);
memoryStream.Close();
}
Response.End();
}
catch (Exception ex)
{
ViewBag.TaskMessage =
"<div style=\"margin-left:15px;margin-right:15px\" class=\"alert alert-danger\">"
+ "<i class=\"fa fa-exclamation-circle\"></i> "
+ "An error occurred during the process...<br />"
+ "-" + ex.Message.ToString()
+ "</div>"
;
}
return View();
}
@using (Html.BeginForm("ParseToExcel", "Task", FormMethod.Post, new { enctype = "multipart/form-data", id = "parseFrm" }))
{
<!-- File Upload Row -->
<div class="row">
<!-- Select Files -->
<div class="col-lg-6">
<input type="file" multiple="multiple" accept=".adt" name="filesUpload" id="filesUpload" />
</div>
<!-- Upload/Begin Parse -->
<div class="col-lg-6 text-right">
<button id="beginParse" class="btn btn-success"><i class="fa fa-download"></i> Parse and Download Spreadsheet</button>
</div>
</div>
}
<!-- Task Progress Row -->
<div class="row">
<!-- Space Column -->
<div class="col-lg-12">
</div>
<!-- Progress Indicator Column -->
<script type="text/javascript" language="javascript">
$(document).ready(function () {
$('.progress').hide();
$('#beginParse').on('click', function () {
$('#parseFrm').submit();
})
$('#parseFrm').on('submit', function (e) {
e.preventDefault();
$.ajax({
url: '/Task/ParseToExcel',
type: "POST",
//success: function () {
// console.log("done");
//}
});
// initialize the connection to the server
var progressNotifier = $.connection.progressHub;
// client-side sendMessage function that will be called from the server-side
progressNotifier.client.sendMessage = function (message, count) {
// update progress
UpdateProgress(message, count);
};
// establish the connection to the server and start server-side operation
$.connection.hub.start().done(function () {
// call the method CallLongOperation defined in the Hub
progressNotifier.server.callLongOperation();
});
});
});
function UpdateProgress(message, count) {
// get status div
var status = $("#status");
// set message
status.html(message);
// get progress bar
if (count > 0) {
$('.progress').show();
}
$('.progress-bar').css('width', count + '%').attr('aria-valuenow', count);
$('.progress-bar').html(count + '%');
}
</script>
<div class="col-lg-12">
<div id="status">Ready</div>
</div>
<div class="col-lg-12">
<div class="progress">
<div class="progress-bar" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="min-width:20px;">
0%
</div>
</div>
</div>
</div>
<!-- Task Message Row -->
<div class="row">
<div clss="col-lg-12">
@Html.Raw(ViewBag.TaskMessage)
</div>
</div>
e.preventDefault();
$.ajax({
url: '/Task/ParseToExcel',
type: "POST",
data: new FormData( this ),
processData: false,
contentType: false,
//success: function () {
// console.log("done");
//}
});
参考 目前还不清楚您到底遇到了什么问题，但使用您的代码，我已经完成了这项工作，只做了一些更改
首先，表单post正在重新加载页面，如果要使用post，则需要通过捕获post事件和阻止默认操作（然后使用jQuery接管）异步执行该操作。我不确定您打算如何触发帖子（可能我只是在您的代码中错过了它），所以我添加了一个按钮并连接到该按钮中，但根据需要进行更改：
<!-- Progress Indicator Column -->
<script type="text/javascript" language="javascript">
$(document).ready(function () {
$('.progress').hide();
$('#button1').on('click', function () {
$('#form1').submit();
})
$('#form1').on('submit', function (e) {
e.preventDefault();
$.ajax({
url: '/Progress/DoTest',
type: "POST",
success: function () {
console.log("done");
}
});
// initialize the connection to the server
var progressNotifier = $.connection.progressHub;
// client-side sendMessage function that will be called from the server-side
progressNotifier.client.sendMessage = function (message, count) {
// update progress
UpdateProgress(message, count);
};
// establish the connection to the server and start server-side operation
$.connection.hub.start().done(function () {
// call the method CallLongOperation defined in the Hub
progressNotifier.server.callLongOperation();
});
});
});
function UpdateProgress(message, count) {
// get status div
var status = $("#status");
// set message
status.html(message);
// get progress bar
if (count > 0)
{
$('.progress').show();
}
$('.progress-bar').css('width', count + '%').attr('aria-valuenow', count);
$('.progress-bar').html(count + '%');
}
</script>
<div class="col-lg-12">
<div id="status">Ready</div>
</div>
<form id="form1">
<button type="button" id="button1">Submit Form</button>
</form>
<div class="col-lg-12">
<div class="progress">
<div class="progress-bar" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="min-width:20px;">
0%
</div>
</div>
</div>
$（文档）.ready（函数（）{
$（'.progress'）.hide（）；
$（'#button1'）。在（'click'，函数（）{
$（'表格1'）。提交（）；
})
$（'#form1'）。关于（'submit'，函数（e）{
e、 预防默认值（）；
$.ajax({
url:“/Progress/DoTest”，
类型：“POST”，
成功：函数（）{
控制台日志（“完成”）；
}
});
//初始化与服务器的连接
var progressNotifier=$.connection.progressHub；
//将从服务器端调用的客户端sendMessage函数
progressNotifier.client.sendMessage=函数（消息，计数）{
//更新进度
UpdateProgress（消息、计数）；
};
//建立与服务器的连接并启动服务器端操作
$.connection.hub.start（）.done（函数（）{
//调用中心中定义的方法CallLongOperation
progressNotifier.server.callLongOperation（）；
});
});
});
函数UpdateProgress（消息、计数）{
//获取状态div
var状态=$（“#状态”）；
//设置消息
html（消息）；
//获取进度条
如果（计数>0）
{
$（'.progress'）.show（）；
}
$（'.progress bar'）.css（'width'，count+'%'）.attr（'aria-valuenow'，count）；
$（'.progress bar'）.html（计数+'%'）；
}
准备好的
提交表格
0%
我还简化了控制器，只是为了关注手头的问题。将问题分解，首先让机械师工作，特别是当你遇到问题时，然后添加额外的逻辑：
public class ProgressController : Controller
{
// GET: Progress
public ActionResult Index()
{
return View();
}
[HttpPost]
public ActionResult DoTest()
{
// Initialize Hub context
var hubContext = GlobalHost.ConnectionManager.GetHubContext<ProgressHub>();
hubContext.Clients.All.sendMessage("Initalizing...", 0);
int i = 0;
do
{
hubContext.Clients.All.sendMessage("Uploading ", i * 10);
Thread.Sleep(1000);
i++;
}
while (i < 10);
return View("Index");
}
}
公共类ProgressController:控制器
{
//获得：进展
公共行动结果索引（）
{
返回视图（）；
}
[HttpPost]
公共行动结果DoTest（）
{
//初始化集线器上下文
var hubContext=GlobalHost.ConnectionManager.GetHubContext（）；
hubContext.Clients.All.sendMessage（“初始化…”，0）；
int i=0；
做
{
hubContext.Clients.All.sendMessage（“上传”，i*10）；
睡眠（1000）；
i++；
}
而（i<10）；
返回视图（“索引”）；
}
}
另外，请确保javascript引用的顺序正确，jquery必须首先加载，然后加载signar，然后加载hub脚本
如果仍然存在问题，请发布准确的错误消息，但我怀疑是同步表单/重新加载的问题
希望这对你有所帮助好吧，我已经尝试过了，我认为你最好使用一个名为“jQuery表单插件”（jQuery Form plugin）的插件，它将有助于解决HttpPostedFiles问题
我接受了你的代码，做了一些调整，使它工作起来。在每次循环（两个循环）期间，您都需要重新计算您的fileProgress，并且通过添加到表单中的按钮，不再需要通过jQuery触发post，因此我对此进行了注释
另外，我认为CallLongOperation（）函数现在是多余的（我想这只是源材料中的一个演示），所以我已经从hub启动逻辑中删除了该调用，并用一行显示按钮来替换它-在signalR就绪之前，您可能应该阻止用户开始上传，但信号器几乎立即启动，所以我想你们甚至不会注意到延迟
我不得不注释掉一些代码，因为我没有这些对象（XLWorkbook的东西、openxml位等等），但是您应该能够在没有这些位的情况下运行这些代码，并跟踪代码以遵循逻辑，然后将这些位添加回您自己
这是一个有趣的问题，希望我能帮上忙：）
控制器：
public class TaskController : Controller
{
[HttpPost]
public ActionResult ParseToExcel(HttpPostedFileBase[] filesUpload)
{
decimal currentFile = 1.0M;
int fileProgress = 0;
int maxCount = filesUpload.Count();
// Initialize Hub context
var hubContext = GlobalHost.ConnectionManager.GetHubContext<ProgressHub>();
hubContext.Clients.All.sendMessage("Initalizing...", fileProgress);
try
{
// Map server path for temporary file placement (Generate new serialized path for each instance)
var tempGenFolderName = DateTime.Now.ToString("yyyyMMdd_HHmmss"); //SubstringExtensions.GenerateRandomString(10, false);
var tempPath = Server.MapPath("~/" + tempGenFolderName + "/");
// Create Temporary Serialized Sub-Directory
FileInfo thisFilePath = new FileInfo(tempPath);
thisFilePath.Directory.Create();
// Iterate through PostedFileBase collection
foreach (HttpPostedFileBase file in filesUpload)
{
// Does this iteration of file have content?
if (file.ContentLength > 0)
{
fileProgress = Convert.ToInt32(Math.Round(currentFile / maxCount * 100, 0));
// Indicate file is being uploaded
hubContext.Clients.All.sendMessage("Uploading " + Path.GetFileName(file.FileName), fileProgress);
file.SaveAs(Path.Combine(thisFilePath.FullName, file.FileName));
currentFile++;
}
}
// Initialize new ClosedXML/Excel workbook
//var hl7Workbook = new XLWorkbook();
// Restart progress
currentFile = 1.0M;
maxCount = Directory.GetFiles(tempPath).Count();
// Iterate through the files saved in the Temporary File Path
foreach (var file in Directory.EnumerateFiles(tempPath))
{
var fileNameTmp = Path.GetFileName(file);
fileProgress = Convert.ToInt32(Math.Round(currentFile / maxCount * 100, 0));
// Update status
hubContext.Clients.All.sendMessage("Parsing " + Path.GetFileName(file), fileProgress);
// Initialize string to capture text from file
string fileDataString = string.Empty;
// Use new Streamreader instance to read text
using (StreamReader sr = new StreamReader(file))
{
fileDataString = sr.ReadToEnd();
}
// Do more work with the file, adding file contents to a spreadsheet...
currentFile++;
}
// Delete temporary file
thisFilePath.Directory.Delete();
// Prepare Http response for downloading the Excel workbook
//Response.Clear();
//Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
//Response.AddHeader("content-disposition", "attachment;filename=\"hl7Parse_" + DateTime.Now.ToString("MM-dd-yyyy") + ".xlsx\"");
// Flush the workbook to the Response.OutputStream
//using (MemoryStream memoryStream = new MemoryStream())
//{
// hl7Workbook.SaveAs(memoryStream);
// memoryStream.WriteTo(Response.OutputStream);
// memoryStream.Close();
//}
//Response.End();
}
catch (Exception ex)
{
ViewBag.TaskMessage =
"<div style=\"margin-left:15px;margin-right:15px\" class=\"alert alert-danger\">"
+ "<i class=\"fa fa-exclamation-circle\"></i> "
+ "An error occurred during the process...<br />"
+ "-" + ex.Message.ToString()
+ "</div>"
;
}
return View();
}
}
公共类任务控制器：控制器
{
[HttpPost]
公共操作结果ParseToExcel（HttpPostedFileBase[]文件上载）
{
十进制当前文件=1.0M；
int fileProgress=0；
整数最大计数=