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how to wait c# webbrowser to complete document load in TPL

Hi I have this two blocks of code
when I navigate the browser to a url and try to wait for it I get a deadlock I think=) any help suggestions are much appreciated!
I'm just adding some more text here so I am able to post the question :/ sorry
foreach (var davaType in davaTypes)
{
Parallel.ForEach(years, year =>
{
ts.Add(Task.Run(() =>
{
var th = new Thread(async () =>
{
await doWorkAsync(year, davaType, tarafType);
Application.Run();
});
th.IsBackground = true;
th.SetApartmentState(ApartmentState.STA);
th.Start();
}));
});
}
and
public static async Task doWorkAsync(int year, string davaType, string tarafType)
{
using (var browser = new MyBrowser())
{
Console.WriteLine("Im Created Here");
browser.Navigate("some url");
while (!browser.MyLoaded)
{
Console.WriteLine("waiting");
await Task.Delay(10);
}
Console.WriteLine("complete");
browser.Document?.GetElementById("DropDownList1")?.SetAttribute("value", davaType);
browser.Document.GetElementById("DropDownList3")?.SetAttribute("value", tarafType);
browser.Document.GetElementById("DropDownList4")?.SetAttribute("value", year.ToString());
browser.Document.GetElementById("Button1").MyClick();
await browser.WaitPageLoad(10);
Console.WriteLine("Im DoneHere");
}
}

You can use TaskCompletionSource to create a task and await for it after the page is loaded.
See: UWP WebView await navigate.

I have experienced this problem before and the solution I have applied is as follows;
private void waitTillLoad()
{
WebBrowserReadyState loadStatus = default(WebBrowserReadyState);
int waittime = 100000;
int counter = 0;
while (true)
{
loadStatus = webBrowser1.ReadyState;
Application.DoEvents();
if ((counter > waittime) || (loadStatus == WebBrowserReadyState.Uninitialized) || (loadStatus == WebBrowserReadyState.Loading) || (loadStatus == WebBrowserReadyState.Interactive))
{
break; // TODO: might not be correct. Was : Exit While
}
counter += 1;
}
counter = 0;
while (true)
{
loadStatus = webBrowser1.ReadyState;
Application.DoEvents();
if (loadStatus == WebBrowserReadyState.Complete)
{
break; // TODO: might not be correct. Was : Exit While
}
counter += 1;
}
}

You need to create only one separate thread for WinForms. Other threads will be created by individual browsers themselves. What you do need is handling their DocumentCompleted event. The first time the document completes you enter and submit data, the second time it completes you get the result. When all browsers finish, you exit the winforms thread and you're done.
Note: To launch bots from winforms thread, I made use of Idle event handler, just because it was the first solution that came to my mind. You may find better way.
using System;
using System.Collections.Generic;
using System.Threading;
using System.Windows.Forms;
namespace ConsoleBrowsers
{
class Program
{
static void Main(string[] args)
{
string url = "https://your.url.com";
string[] years = { "2001", "2002", "2003"};
string[] davas = { "1", "2", "3" };
string taraf = "1";
int completed = 0, succeeded = 0;
var bots = new List<Bot>();
var started = false;
var startBots = (EventHandler)delegate (object sender, EventArgs b)
{
if (started)
return;
started = true;
foreach (var dava in davas)
foreach (var year in years)
bots.Add(new Bot { Year = year, Dava = dava, Taraf = taraf, Url = url }.Run((bot, result) =>
{
Console.WriteLine($"{result}: {bot.Year}, {bot.Dava}");
succeeded += result ? 1 : 0;
if (++completed == years.Length * davas.Length)
Application.ExitThread();
}));
};
var forms = new Thread((ThreadStart) delegate {
Application.EnableVisualStyles();
Application.Idle += startBots;
Application.Run();
});
forms.SetApartmentState(ApartmentState.STA);
forms.Start();
forms.Join();
Console.WriteLine($"All bots finished, succeeded: {succeeded}, failed:{bots.Count - succeeded}.");
}
}
class Bot
{
public string Url, Dava, Taraf, Year;
public delegate void CompletionCallback(Bot sender, bool result);
WebBrowser browser;
CompletionCallback callback;
bool submitted;
public Bot Run(CompletionCallback callback)
{
this.callback = callback;
browser = new WebBrowser();
browser.ScriptErrorsSuppressed = true;
browser.DocumentCompleted += Browser_DocumentCompleted;
browser.Navigate(Url);
return this;
}
void Browser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
if (browser.ReadyState == WebBrowserReadyState.Complete)
{
if (submitted)
{
callback(this, true);
return;
}
var ok = SetValue("DropDownList1", Dava);
ok &= SetValue("DropDownList3", Taraf);
ok &= SetValue("DropDownList4", Year);
if (ok)
ok &= Click("Button1");
if (!(submitted = ok))
callback(this, false);
}
}
bool SetValue(string id, string value, string name = "value")
{
var e = browser?.Document?.GetElementById(id);
e?.SetAttribute(name, value);
return e != null;
}
bool Click(string id)
{
var element = browser?.Document?.GetElementById(id);
element?.InvokeMember("click");
return element != null;
}
}
}

Error when pulling from database to create objects after successful creation

Let me start by apologizing for the complexity of this post. hopefully I am missing something simple but in order to find out I have to make a lengthy explanation.
I'm building a staff tracking app that allows users to draw polygons on a map. The polygon is used as a zone. If the device location is inside the zone it will set them to one status such as "In" and then set them to another status like "Out" when they leave. I'm using several nugets; SQLite, TK.CustomMap, PopupPlugin, to accomplish as much of this as possible in the Shared Project. The SQLite data model is based on the structure of the remote database for the solution which also has a desktop application, web app, and many other interfaces so that structure must be maintained.
The tables involved in this operation are Zones, ZonePoints and StatusClass. When the Zone is saved the Points of the TK.Polygon are saved into the points table. The Statuses assigned to the in and out status of the Zone are assigned to the zone as is the zone name.
The process works this way - first the user clicks on a button to add the zone. This creates a new zone, saves it to the database and gets its id from the table. For now, the ZoneSys (Primary Key in the remote db) is also set to the id although when the API is ready this will be Auto Incremented in the remote db. Here is that command and the objects it references. I did not include the database method definitions given that they work on the first time through, but if anyone thinks they will help solve this riddle please let me know -
public static List<Position> ActiveZonePositions = new List<Position>();
public static int ActiveZoneID;
public static Zone ActiveZone;
public static int PointCount;
public static bool NewZoneOpen = false;
public Command<EventArgs> OpenNewZone
{
get
{
return new Command<EventArgs>(async e =>
{
NewZoneOpen = true;
PointCount = 0;
ActiveZonePositions.Clear();
Zone ZoneToAdd = new Zone
{
Contactsys = MobileUser.ContactSys,
ZoneTypeSys = 1,
OrganizationSys = MobileUser.OrganizationSys,
ZoneName = null
};
ActiveZoneID = await AddZoneToDBAsync(ZoneToAdd);
ZoneToAdd.ID = ActiveZoneID;
ZoneToAdd.ZoneSys = ActiveZoneID;
await AddZoneToDBAsync(ZoneToAdd);
ActiveZone = await App.Database.GetZoneAsync(ActiveZoneID);
});
}
}
As the user click points in the map the polygon is drawn using those positions and those positions are also used to create points which are added to a static list. Here is the MapClicked_Command -
public Command<Position> MapClickedCommand
{
get
{
return new Command<Position>(async position =>
{
if (NewZoneOpen)
{
bool isPointInPolygon = IsPointInAnyPolygon(position);
if (isPointInPolygon)
{
var action = await Application.Current.MainPage.DisplayActionSheet(
"Region Collides with Another Region",
"Cancel",
null,
"Try Again",
"Close Zone Editor");
if (action == "Close Zone Editor")
{
await RemoveZoneAsync(ActiveZoneID);
}
if (action == "Try Again")
{
return;
}
}
else if (!isPointInPolygon)
{
ActiveZonePositions.Add(position);
}
if (ActiveZonePositions.Count == 2)
{
ZonePolyLine.LineCoordinates = ActiveZonePositions;
_lines.Remove(ZonePolyLine);
_lines.Add(ZonePolyLine);
}
else if (ActiveZonePositions.Count == 3)
{
ActiveZonePositions.Add(position);
_lines.Remove(ZonePolyLine);
TKPolygon poly = new TKPolygon
{
StrokeColor = System.Drawing.Color.CornflowerBlue,
StrokeWidth = 2f,
Color = System.Drawing.Color.CornflowerBlue
};
foreach (Position pos in ActiveZonePositions)
{
poly.Coordinates.Add(pos);
}
_polygons.Add(poly);
_currentPolygon.Clear();
_currentPolygon.Add(poly);
currentPolygonRendering = true;
}
else if (ActiveZonePositions.Count > 3)
{
ActiveZonePositions.Add(position);
TKPolygon poly = new TKPolygon
{
StrokeColor = System.Drawing.Color.CornflowerBlue,
StrokeWidth = 2f,
Color = System.Drawing.Color.CornflowerBlue
};
foreach (Position pos in ActiveZonePositions)
{
poly.Coordinates.Add(pos);
}
_polygons.Remove(_polygons.Last());
_polygons.Add(poly);
_currentPolygon.Clear();
_currentPolygon.Add(poly);
}
var pin = new TKCustomMapPin
{
Position = new TK.CustomMap.Position(position.Latitude, position.Longitude),
Title = string.Format("Pin {0}, {1}", position.Latitude, position.Longitude),
IsVisible = true,
IsDraggable = true,
ShowCallout = true
};
_pins.Add(pin);
await CreatePointAsync(position);
PointCount++;
}
else if (EditZoneOpen)
{
ActiveZonePositions.Add(position);
var poly = _polygons[0];
poly.Coordinates.Clear();
foreach (Position pos in ActiveZonePositions)
{
poly.Coordinates.Add(pos);
}
_polygons.Remove(_polygons.Last());
_polygons.Add(poly);
_currentPolygon.Clear();
_currentPolygon.Add(poly);
var pin = new TKCustomMapPin
{
Position = new TK.CustomMap.Position(position.Latitude, position.Longitude),
Title = string.Format("Pin {0}, {1}", position.Latitude, position.Longitude),
IsVisible = true,
IsDraggable = true,
ShowCallout = true
};
_pins.Add(pin);
await CreatePointAsync(position);
PointCount++;
}
});
}
}
Here is the CreatePointAsyncMethod -
public async Task CreatePointAsync(TK.CustomMap.Position position)
{
var zone = await RetrieveZoneAsync(ActiveZoneID);
Model.Point PointToAdd = new Model.Point
{
ZoneSys = zone.ZoneSys,
PointName = "",
Latitude = position.Latitude,
Longitude = position.Longitude,
PointOrder = PointCount + 1
};
ActiveZonePoints.Add(PointToAdd);
}
Here is the IsPointInAnyPolygon method that checks against the list of polygons to ensure the point clicked is not inside any of them as well as its supporting methods.
private bool IsPointInAnyPolygon(Position position)
{
bool inBounds = false;
for (var i = 0; i < ZonePolygons.Count(); i++)
foreach (ZonePolygon zpoly in ZonePolygons)
{
TKPolygon tkpoly = zpoly.Zpolygon;
inBounds = IsPointInPolygon(position, tkpoly.Coordinates);
if (inBounds)
{
ActiveZoneID = zpoly.ID;
return inBounds;
}
}
return inBounds;
}
private bool IsPointInPolygon(TK.CustomMap.Position position, List<Position> coords)
{
int intersectCount = 0;
for (int j = 0; j < coords.Count() - 1; j++)
{
if (j+1 >= coords.Count())
{
if (rayCastIntersect(position, coords[j], coords[0]))
{
intersectCount++;
}
} else if (rayCastIntersect(position, coords[j], coords[j + 1]))
{
intersectCount++;
}
}
return ((intersectCount % 2) == 1); // odd = inside, even = outside;
}
private bool rayCastIntersect(TK.CustomMap.Position position, TK.CustomMap.Position vertA, TK.CustomMap.Position vertB)
{
double aY = vertA.Latitude;
double bY = vertB.Latitude;
double aX = vertA.Longitude;
double bX = vertB.Longitude;
double pY = position.Latitude;
double pX = position.Longitude;
if ((aY > pY && bY > pY) | (aY < pY && bY < pY)
| (aX < pX && bX < pX))
{
return false; // a and b can't both be above or below pt.y, and a or
// b must be east of pt.x
}
double m = (aY - bY) / (aX - bX); // Rise over run
double bee = (-aX) * m + aY; // y = mx + b
double x = (pY - bee) / m; // algebra is neat!
return x > pX;
}
Upon clicking the save button a popup opens that allows the user to give the Zone a name, define the statuses it will be assigned and the points are added to the database. There is a ZoneSys column in the Points table which allows the points to be matched to their respective zones when retrieved. This is done withe the UpdateZone command
public Command<EventArgs> UpdateZone
{
get
{
return new Command<EventArgs>(async e =>
{
Zone zone = await App.Database.GetZoneAsync(ActiveZoneID);
zone.ZoneName = ZoneParameters.ZoneName;
zone.StatusSys = ZoneParameters.InStatus.StatusSys;
zone.OutOfZoneStatusSys = ZoneParameters.OutStatus.StatusSys;
await AddZoneToDBAsync(zone);
if (MapPage.SaveZoneInfoPopupPageOpen)
{
SavePointsOnExit();
MapPage.SaveZoneInfoPopupPageOpen = false;
}
});
}
}
The UpdateZone command calls the SavePointsOnExit method
private async void SavePointsOnExit()
{
ActiveZonePoints.OrderBy(o => o.PointOrder);
for (var i = 0; i < ActiveZonePoints.Count(); i++)
{
Model.Point PointToAdd = new Model.Point();
PointToAdd = ActiveZonePoints[i];
ActivePointID = await AddPointToDBAsync(PointToAdd);
PointToAdd.ID = ActivePointID;
PointToAdd.PointSys = ActivePointID;
await AddPointToDBAsync(PointToAdd);
}
try
{
Zone zone = await RetrieveZoneAsync(ActiveZoneID);
}
catch
{
await Application.Current.MainPage.DisplayActionSheet("no zone returned", "database error", "cancel");
}
try
{
Zone zone = await RetrieveZoneAsync(ActiveZoneID);
await CreateZonedPolygonAsync(zone);
}
catch
{
await Application.Current.MainPage.DisplayActionSheet("Could not create ZonePolygon", "object error", "cancel");
}
ActiveZonePoints.Clear();
ActiveZonePositions.Clear();
NewZoneOpen = false;
ClearPins();
PointCount = 0;
PopulatePoints();
}
In addition to saving the points to the db the SaveZonePointsOnExit method also creates the ZonePolygon and adds it to an observable collection using the CreateZonedPolygonAsync method -
private async Task<ZonePolygon> CreateZonedPolygonAsync(Zone zone)
{
int StatusSys = zone.StatusSys;
var status = await App.Database.GetStatusBySysAsync(StatusSys);
int OutStatusSys = zone.OutOfZoneStatusSys;
var outStatus = await App.Database.GetStatusBySysAsync(OutStatusSys);
var points = await App.Database.GetZonePointsAsync(zone.ZoneSys);
ZonePolygon zonePolygon = new ZonePolygon
{
ID = zone.ID
};
TKPolygon poly = new TKPolygon();
foreach (Model.Point point in points)
{
poly.Coordinates.Add(new Position(point.Latitude, point.Longitude));
}
poly.Color = Color.FromHex(status.ColorCode);
poly.StrokeColor = Color.Firebrick;
poly.StrokeWidth = 5f;
_polygons.Add(poly);
ZonePolygons.Add(zonePolygon);
return zonePolygon;
}
So far all of this works to a point. I have been successful in creating the first Polygon. I don't run into a problem until I attempt to create a second Zone. When I click on the AddZone button a second time that works fine but when I click on the map to begin creating the second zone a nullreference exception occurs.
Given that the first zone is created without issue I think the problem must be arising from something that occurs when the IsPointInAnyPolygon method no longer immediately returns false because the ZonePolygons list is no longer empty. So something about the retrieving of zones from the database to check against is the problem or possibly adding coordinates when the TKPolygon is created. I don't know what has a null reference. I would think that since I am creating the Zones directly from the database that all the objects would be saved properly and their previous references wouldn't matter. I'm very stuck on this.
TL;DR there is an issue with either the CreateZonedPolygonAsync Method or the IsPointInAnyPolygon method

I figured this out. I feel rather silly because I have been stuck on this for several hours spread out over a couple of weeks. Kept coming back to it and couldn't figure it out. The issue was that in the CreateZonedPolygonAsync method I never assigned the TKPolygon created via points to the ZonePolygon object being created. So when I tried to reference it it didn't exist. All that existed was the ID. Can't believe I missed this for this long.
Of course now I'm having brand new problems but at least this is fixed.
All I had to do was add zonePolygon.Zpolygon = poly; as shown here and it works now
private async Task<ZonePolygon> CreateZonedPolygonAsync(Zone zone)
{
int StatusSys = zone.StatusSys;
var status = await App.Database.GetStatusBySysAsync(StatusSys);
int OutStatusSys = zone.OutOfZoneStatusSys;
var outStatus = await App.Database.GetStatusBySysAsync(OutStatusSys);
var points = await App.Database.GetZonePointsAsync(zone.ZoneSys);
ZonePolygon zonePolygon = new ZonePolygon
{
ID = zone.ID
};
TKPolygon poly = new TKPolygon();
foreach (Model.Point point in points)
{
poly.Coordinates.Add(new Position(point.Latitude, point.Longitude));
}
poly.Color = Color.FromHex(status.ColorCode);
poly.StrokeColor = Color.Firebrick;
poly.StrokeWidth = 5f;
zonePolygon.Zpolygon = poly;
_polygons.Add(poly);
ZonePolygons.Add(zonePolygon);
return zonePolygon;
}

Cassandra CSharp driver batch statement failing

I am trying to use a batch statement instead of a single binded insert statement.
Even though this is a very small change this fails and I am not looking for a good way for the error handling and to find out which part is the issue. One issue is definetly that the Java API has a getStatements method which is missing in the C# driver.
The pseudo code looks like this:
private BatchStatement batchStatement = new BatchStatement();
private const int blockingFactor = 5;
private int i = 0;
private object locker = new object();
public CassandraBufferHandler()
{
Cluster = Cluster.Builder().AddContactPoints("localhost").Build();
Session = Cluster.Connect("my_keyspace");
InsertStatement = Session.Prepare("Insert into ticks (instrumentcode, timestamp, type, exchange, price, volume) values(?,?,?,?,?,?) if not exists;");
}
public void OnEvent(TickCassandra tickCassandra, long sequence, bool endOfBatch)
{
try
{
lock (locker)
batchStatement.Add(
InsertStatement.Bind(tickCassandra.Instrumentcode,
tickCassandra.Timestamp,
tickCassandra.Type,
tickCassandra.Exchange,
tickCassandra.Price,
tickCassandra.Volume));
if (i++ % blockingFactor == 0)
{
BatchStatement tmp;
lock (locker)
{
tmp = batchStatement;
tmp.EnableTracing();
batchStatement = new BatchStatement();
}
Session.ExecuteAsync(tmp).ContinueWith(t =>
{
if (t.Exception != null)
{
ErrorCount++;
Log.Error(t.Exception.Message + tmp.ToString());
}
else
InsertCount++;
});
}
}
catch (Exception ex)
{
Log.Error("Exception:" + ex);
Active = false;
}

Waiting for a parse.com async task to finish in Unity3D

As part of my school project I'm trying to link two tables to decrease the amount of data stored in one table so I wanted to link my "Scores" class with my "CorrectAnswers" class via the ObjectID. However since the tasks are asynchronous, by the time one task is done saving, the other task has already begun or also finished saving and so the ObjectID returns as null.
Here's the code I'm using:
public void SaveScore()
{
ParseObject SendScore = new ParseObject("Scores");
SendScore["Score"] = CheckAnswer.score;
SendScore["user"] = ParseObject.CreateWithoutData("_User", ParseUser.CurrentUser.ObjectId);
SendScore["TestMode"] = MainMenu.testmode;
SendScore["TotalQuestions"] = QuestionCreation.TotalQuestions;
SendScore["CorrectQuestions"] = CheckAnswer.CorrectQuestions;
SendScore.SaveAsync().ContinueWith(t =>
{
ScoreObjectId = SendScore.ObjectId;
});
ParseObject SendCorrectTopics = new ParseObject("CorrectAnswers");
SendCorrectTopics["Score"] = SendScore.ObjectId;
for (int i = 0; i <= 9; i++)
{
string Topic = "Topic" + (i + 1).ToString();
SendCorrectTopics[Topic] = CheckAnswer.CorrectTopics[i];
}
SendCorrectTopics.SaveAsync();
SceneManager.LoadScene(0);
}
How would I be able to make the second save hold until the first save has finished? I'm somewhat new to C# and so don't quite know all it's features yet. I've looked into "await" but unity doesn't seem to like that. Any help would be greatly appreciated!
Thanks in advance,

EDIT: Okay, after a bit more reading on Unity's coroutines, I found a much better way of checking that only relies on checking when needed:
IEnumerator CheckSave()
{
while(ScoreObjectId == null & !DoneSave))
{
print("Running");
yield return new WaitForSeconds(0.5f);
}
DoneSave = false;
SaveTotalTopics();
}
This seems like a much better way of doing it.
Well, it seems the answer was something I've already done before, even if it is a little ugly.
Using Unity's update function I created a check to make sure the ObjectID is not null and the previous save had completed, as so:
void Update () {
if (ScoreObjectId != null & DoneSave)
{
DoneSave = false;
SaveTotalTopics();
}
Thus splitting it into two saves and creating:
public void SaveScore()
{
ParseObject SendScore = new ParseObject("Scores");
SendScore["Score"] = CheckAnswer.score;
SendScore["user"] = ParseObject.CreateWithoutData("_User", ParseUser.CurrentUser.ObjectId);
SendScore["TestMode"] = MainMenu.testmode;
SendScore["TotalQuestions"] = QuestionCreation.TotalQuestions;
SendScore["CorrectQuestions"] = CheckAnswer.CorrectQuestions;
Task SendingScores = SendScore.SaveAsync().ContinueWith(t =>
{
if (t.IsFaulted || t.IsCanceled)
{
DoneSave = false;
print(t.Exception);
}
else
{
DoneSave = true;
print("Setting object ID!");
ScoreObjectId = SendScore.ObjectId;
print(ScoreObjectId);
}
});
}
void SaveTotalTopics()
{
for (int i = 0; i <= 9; i++)
{
string Topic = "Topic" + (i + 1).ToString();
SendCorrectTopics[Topic] = CheckAnswer.CorrectTopics[i];
}
SendCorrectTopics["UserScore"] = ParseObject.CreateWithoutData("Scores", ScoreObjectId);
SendCorrectTopics.SaveAsync().ContinueWith(t =>
{
if(t.IsFaulted || t.IsCanceled)
{
print(t.Exception);
}
else
{
print("Saved!");
}
});
}
I'd also forgotten to use ParseObject.CreateWithoutData() so my first code snippet wouldn't have worked even if I'd found a better method...
So, although I'm not happy with the final result, at least it works and I don't think running an if statement every frame should significantly impact on my game's performance.

Why not use a bool and a while loop?
public IEnumerator SaveScore()
{
bool canContinue = false;
ParseObject SendScore = new ParseObject("Scores");
SendScore["Score"] = CheckAnswer.score;
SendScore["user"] = ParseObject.CreateWithoutData("_User", ParseUser.CurrentUser.ObjectId);
SendScore["TestMode"] = MainMenu.testmode;
SendScore["TotalQuestions"] = QuestionCreation.TotalQuestions;
SendScore["CorrectQuestions"] = CheckAnswer.CorrectQuestions;
SendScore.SaveAsync().ContinueWith(t =>
{
ScoreObjectId = SendScore.ObjectId;
//set the bool canContinue to true because the first portion of code has finished running
canContinue = true;
});
//wait while the canContinue bool is false
while(!canContinue){
yield return null;
}
//continue your parse code
ParseObject SendCorrectTopics = new ParseObject("CorrectAnswers");
SendCorrectTopics["Score"] = SendScore.ObjectId;
for (int i = 0; i <= 9; i++)
{
string Topic = "Topic" + (i + 1).ToString();
SendCorrectTopics[Topic] = CheckAnswer.CorrectTopics[i];
}
SendCorrectTopics.SaveAsync();
SceneManager.LoadScene(0);
return null;
}

How can I pass variable to Action?

below is the code sample, I want the components in the queue to take the local variable "entity", how can I achive this? thx
private void DoComparison(StuffEntity entity)
{
try
{
bool dataFlag = CheckIsNewData(entity.PickingTime, entity.WarningPeriod);
if (dataFlag)
{
Queue<Action<StuffEntity>> queue = new Queue<Action<StuffEntity>>();
//How can I let the queue stuff take the entity?
queue.Enqueue(DelaySendingMessageOut);
if (!QueueItem.ContainsKey(entity.FridgeID))
{
QueueItem.Add(entity.FridgeID, queue);
}
}
}
catch (Exception ex)
{
CommonUnity.WriteLog(ex.Message);
CommonUnity.WriteLog(ex.StackTrace);
}
}
private void DelaySendingMessageOut(StuffEntity entity)
{
int pendingPeroid = entity.PendingTime.ToInt();
if (pendingPeroid <= 0)
pendingPeroid = 5;
Thread.Sleep(pendingPeroid * 60 * 1000);
TriggerCheckingBeforeSendMessageOut(entity);
}

queue.Enqueue((e) => DelaySendingMessageOut(entity));
But you can use Queue<Action> since you will not use the argument e:
Queue<Action> queue = new Queue<Action>();
queue.Enqueue(() => DelaySendingMessageOut(entity));