Display progress of a command line process that is running in MVC - asp.net-mvc

Question

I wrote an MVC action that runs a utility with input parameters and writes the utilities output to the response html. here is the full method:
var jobID = Guid.NewGuid();
// save the file to disk so the CMD line util can access it
var inputfilePath = Path.Combine(#"c:\", String.Format("input_{0:n}.json", jobID));
var outputfilePath = Path.Combine(#"c:\", String.Format("output{0:n}.json", jobID));
using (var inputFile = System.IO.File.CreateText(inputfilePath))
{
inputFile.Write(i_JsonInput);
}
var psi = new ProcessStartInfo(#"C:\Code\FoxConcept\FoxConcept\test.cmd", String.Format("{0} {1}", inputfilePath, outputfilePath))
{
WorkingDirectory = Environment.CurrentDirectory,
UseShellExecute = false,
RedirectStandardOutput = true,
RedirectStandardError = true,
CreateNoWindow = true
};
using (var process = new Process { StartInfo = psi })
{
// delegate for writing the process output to the response output
Action<Object, DataReceivedEventArgs> dataReceived = ((sender, e) =>
{
if (e.Data != null) // sometimes a random event is received with null data, not sure why - I prefer to leave it out
{
Response.Write(e.Data);
Response.Write(Environment.NewLine);
Response.Flush();
}
});
process.OutputDataReceived += new DataReceivedEventHandler(dataReceived);
process.ErrorDataReceived += new DataReceivedEventHandler(dataReceived);
// use text/plain so line breaks and any other whitespace formatting is preserved
Response.ContentType = "text/plain";
// start the process and start reading the standard and error outputs
process.Start();
process.BeginErrorReadLine();
process.BeginOutputReadLine();
// wait for the process to exit
process.WaitForExit();
// an exit code other than 0 generally means an error
if (process.ExitCode != 0)
{
Response.StatusCode = 500;
}
}
Response.End();
The utility takes around a minute to complete and it displays relevant information along the way.
is it possible to display the the information as it runs on the user's browser ?

Answer 1

I hope this link will help: Asynchronous processing in ASP.Net MVC with Ajax progress bar
You can call Controller's action method and get the status of the process.
Controller code:
/// <summary>
/// Starts the long running process.
/// </summary>
/// <param name="id">The id.</param>
public void StartLongRunningProcess(string id)
{
longRunningClass.Add(id);
ProcessTask processTask = new ProcessTask(longRunningClass.ProcessLongRunningAction);
processTask.BeginInvoke(id, new AsyncCallback(EndLongRunningProcess), processTask);
}
jQuery Code:
$(document).ready(function(event) {
$('#startProcess').click(function() {
$.post("Home/StartLongRunningProcess", { id: uniqueId }, function() {
$('#statusBorder').show();
getStatus();
});
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("The Long process has finished");
};
});
}