为方法创建新线程

Question

I am currently trying to increase the Stack size for a new Thread , so that I can run my method below without the application throwing out a StackOverflowException .

public QuoteResult CalculateRates(TruckDb db, QuoteData data)
{
    var result = new QuoteResult
    {
        Successful = false,
        Data = data
    };

    //...EDIT with code samples

        //Floor - 1
        var qisg = new QuoteItemSectionGroup
        {
            SectionGroup = db.SectionGroups.Where(x => x.Name == "Longitudinals" && x.Section == TruckSection.Floor).First(),
            StockItem = quoteItem.FloorSpec.Name == "Ali Floor Bakery" || quoteItem.FloorSpec.Name == "Trailer Floor" || quoteItem.FloorSpec.Name == "Use Existing Floor" ? null : quoteItem.BodyType.Name == "Insulated" || quoteItem.BodyType.Name == "Insulated Meat Hanger" ? db.StockItems.Where(x => x.StockCode == "SCH095").First()
                : quoteItem.BodyType.Name == "Royal Corrugated" || quoteItem.BodyType.Name == "Royal Smooth Glued" || quoteItem.BodyType.Name == "Royal Smooth Riveted" ||
                quoteItem.BodyType.Name == "Royal Tautliner" || quoteItem.BodyType.Name == "Penta Slider Curtain-side" || quoteItem.BodyType.Name == "Bakery Light Weight GRP" ||
                quoteItem.BodyType.Name == "Free Flow Bakery Body" || quoteItem.BodyType.Name == "Boardside GRP Body" || quoteItem.BodyType.Name == "Drop Side" || quoteItem.BodyType.Name == "Flat Deck" ? quoteItem.ChassisModel.Longitudinal : null
        };
        qisg.Quantity = qisg.StockItem == null ? 0 : 2;
        qisg.Length = qisg.StockItem == null ? 0 : Math.Round((quoteItem.BodyType.Name == "Royal Corrugated" || quoteItem.BodyType.Name == "Royal Smooth Glued" || quoteItem.BodyType.Name == "Smooth Folded" || quoteItem.BodyType.Name == "Royal Smooth Riveted" || quoteItem.BodyType.Name == "Bakery Light Weight GRP" || quoteItem.BodyType.Name == "Free Flow Bakery Body" || quoteItem.BodyType.Name == "Boardside GRP Body" || quoteItem.BodyType.Name == "Insulated" || quoteItem.BodyType.Name == "Insulated Meat Hanger" || quoteItem.BodyType.Name == "Drop Side" || quoteItem.BodyType.Name == "Flat Deck" ? -0.157
            : quoteItem.BodyType.Name == "Penta Slider Curtain-side" ? -0.150 : quoteItem.BodyType.Name == "Royal Tautliner" ? -0.060
            : 0) + (quoteItem.ExternalLength / 1000), 3);
        qisg.Weight = qisg.StockItem == null ? 0 : Math.Round(((double)qisg.Length * (double)qisg.Quantity) * (double)qisg.StockItem.Mass, 3);
        qisg.Cost = qisg.StockItem == null ? 0 : Math.Round(((double)qisg.Length * (double)qisg.Quantity) * (double)qisg.StockItem.UnitCost, 2);
        if (qisg.StockItem != null)
            quoteItem.SectionGroups.Add(qisg);

        //Floor - 2
        qisg = new QuoteItemSectionGroup
        {
            SectionGroup = db.SectionGroups.Where(x => x.Name == "Cross Member" && x.Section == TruckSection.Floor).First(),
            StockItem = quoteItem.FloorSpec.Name == "Ali Floor Bakery" || quoteItem.FloorSpec.Name == "Trailer Floor" || quoteItem.FloorSpec.Name == "Use Existing Floor" ? null : quoteItem.BodyType.Name == "Insulated" || quoteItem.BodyType.Name == "Insulated Meat Hanger" || quoteItem.BodyType.Name == "Penta Slider Curtain-side" ? db.StockItems.Where(x => x.StockCode == "SCH095").First()
                : quoteItem.BodyType.Name == "Royal Corrugated" || quoteItem.BodyType.Name == "Royal Smooth Glued" || quoteItem.BodyType.Name == "Royal Smooth Riveted" || quoteItem.BodyType.Name == "Royal Tautliner" || quoteItem.BodyType.Name == "Bakery Light Weight GRP" ||
                quoteItem.BodyType.Name == "Free Flow Bakery Body" || quoteItem.BodyType.Name == "Boardside GRP Body" || quoteItem.BodyType.Name == "Drop Side" || quoteItem.BodyType.Name == "Flat Deck" ? db.StockItems.Where(x => x.StockCode == "SCH075").First() : null
        };
        qisg.Quantity = qisg.StockItem == null ? 0 : Math.Floor(quoteItem.BodyType.Name == "Insulated" || quoteItem.BodyType.Name == "Insulated Meat Hanger" || quoteItem.BodyType.Name == "Royal Corrugated"
            || quoteItem.BodyType.Name == "Royal Smooth Glued" || quoteItem.BodyType.Name == "Royal Smooth Riveted" || quoteItem.BodyType.Name == "Royal Tautliner"
            || quoteItem.BodyType.Name == "Bakery Light Weight GRP" || quoteItem.BodyType.Name == "Free Flow Bakery Body" || quoteItem.BodyType.Name == "Boardside GRP Body" || quoteItem.BodyType.Name == "Drop Side" || quoteItem.BodyType.Name == "Flat Deck" ? ((quoteItem.ExternalLength / quoteItem.FloorChannelSpacing.Amount) + 2) 
            : quoteItem.BodyType.Name == "Penta Slider Curtain-side" ? (quoteItem.ExternalLength / quoteItem.FloorChannelSpacing.Amount) : 0);
        qisg.Length = qisg.StockItem == null ? 0 : Math.Round((quoteItem.BodyType.Name == "Royal Corrugated" || quoteItem.BodyType.Name == "Royal Smooth Glued" || quoteItem.BodyType.Name == "Smooth Folded" || quoteItem.BodyType.Name == "Royal Smooth Riveted" || quoteItem.BodyType.Name == "Bakery Light Weight GRP" || quoteItem.BodyType.Name == "Free Flow Bakery Body" || quoteItem.BodyType.Name == "Boardside GRP Body" || quoteItem.BodyType.Name == "Insulated" || quoteItem.BodyType.Name == "Insulated Meat Hanger" || quoteItem.BodyType.Name == "Drop Side" || quoteItem.BodyType.Name == "Flat Deck" ? -0.020
            : quoteItem.BodyType.Name == "Penta Slider Curtain-side" ? -0.070 : quoteItem.BodyType.Name == "Royal Tautliner" ? -0.030
            : 0) + (quoteItem.ExternalWidth / 1000), 3);
        qisg.Weight = qisg.StockItem == null ? 0 : Math.Round(((double)qisg.Length * (double)qisg.Quantity) * (double)qisg.StockItem.Mass, 3);
        qisg.Cost = qisg.StockItem == null ? 0 : Math.Round(((double)qisg.Length * (double)qisg.Quantity) * (double)qisg.StockItem.UnitCost, 2);
        if (qisg.StockItem != null)
            quoteItem.SectionGroups.Add(qisg);   

    //It continues on like this with about 80 more blocks of code like the above samples          

    result.Successful = true;
    return result;
}

I've tried coding in a couple of ways that people have suggested in other questions, but I cannot figure out how to use my method in a new thread.

Here is one of my tries:

void NewThread(QuoteResult result)
{
    const int stackSize = 0x400000;
    var T = new Thread(CalculateRates, stackSize);
    T.Start();
    T.Join();
}

But, it throws out the error:

The best overloaded method match for 'System.Threading.Thread.Thread(System.Threading.ParameterizedThreadStart, int)' has some invalid arguments

As you can clearly see, I have NO clue what I am doing or how to create a new thread for my method, so I do expect a lot of criticism. If anyone needs any more code samples or information, please do not hesitate to ask.

Thanks for any help in advance!

And sorry if it's a vague question

EDIT

Methods that also use the CalculateRates method:

public QuoteResult GetQuote(QuoteData Data)
{
    using (TruckDb db = new TruckDb())
    {
        var result = CalculateRates(db, Data);
        return result;
    }
}

AND

    public bool FinalizeQuote(QuoteResult quoteResult)
    {
        using (TruckDb db = new TruckDb())
        {
            var calcResult = CalculateRates(db, quoteResult.Data);

            //Make sure that result still gives the same amount and that they where successful calculations
            if (calcResult.TotalAmount != quoteResult.TotalAmount || !quoteResult.Successful || !calcResult.Successful)
                return false;

            var company = db.Companies.Where(x => x.Name == "Test Co.").FirstOrDefault();
            if (company == null)
                company = db.Companies.Add(new Company { Name = "Test Co." });

            var rep = company.Represetatives.Where(x => x.Name == "Person").FirstOrDefault();
            if (rep == null)
            {
                rep = new Represetative { Name = "Person" };
                company.Represetatives.Add(rep);
            }
            var quote = new Quote { Date = DateTime.Now, QuoteNumber = DateTime.Now.ToString() };
            rep.Quotes.Add(quote);

            quote.Items.Add(calcResult.QuoteItem);


            db.SaveChanges();
        }
        return true;
    }

Answer 1

You are not passing in the parameters CalculateRates needs.

You can do this by passing in a simple lambda expression:

void NewThread(QuoteResult result)
{
    //example for creating the parameters to pass in
    TruckDb db = new TruckDb();
    QuoteData data = new QuoteData();

    const int stackSize = 0x400000;
    var T = new Thread(() => CalculateRates(db, data), stackSize);
    T.Start();
    T.Join();
}

Answer 2

You can use the Task

refer the mentioned link Task

Answer 3

other than what the guys above said already, but you are having a simple syntax error.

You are not passing in the parameters for the Thread method "CalculateRates". The Thread method should have only one parameter of type "object" which you can pass in, like

var t = new Thread(new ParameterizedThreadStart(youmethod);
t.Start(yourparam);

The other solution would be to use closures. But in general, you are simply not passing in the parameters for the method you are trying to call.

check the samples from the MSDN: https://msdn.microsoft.com/en-us/library/system.threading.parameterizedthreadstart%28v=vs.110%29.aspx