C# a Step by Step Beginners Tutorial

[kawafan]

hi dear.
we would love to see the same type starting guide for the new API.
are you thinking about it ?

[clerk]

the problem was that I tried to use as the data provider directly MarketGrid. I found that to get MarketGrid only indexes to refer to classes of runners

private void c_MktGrid_CellClick(object sender, DataGridViewCellEventArgs e)
        {      

            int ri = e.RowIndex;
            int ci = e.ColumnIndex;
                       
            //selectionID
            long id = mData.RDATA[ri].ID;
             ........................
            
         }

[clerk]

Escapee, please help. How to derive the parameters for the order the rate of events CellClick when you click on a cell

private void c_MktGrid_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            // this control, in which you need to pass
            BetEdit be = new BetEdit();
            fLP_Bets.Controls.Add(be);
            
            //selectionID
            ????????????????
           
            //Odds
            ????????????????

            //color back or lay
            ??????????????????

            //runner name
            ???????????????????
        }

[Escapee]

CaptnCanary

Are you logged on to the website when you are seeing those differences between the api and website prices ?

If you are not logged to the website, then the website prices are at least 15 minutes delayed so will appear different.

Another possibility, it's caused by betfair's X-Matching bot....
See this thread for an explanation of how betfair generates synthetic prices which show up on the website but NOT on the API.

But I think the most likely is you are not logged on to the website when comparing prices

[CaptnCanary]

What have you got your RollupStake value set to?

Hi. Where can I find RollupStake? I searched through the cs files but cannot see it anywhere. But anyhow, I have not changed anything in the tutorial code so everything should be completely as designed by the OP. Since posting my question I noticed some other behaviour too. When watching in-play football(soccer) odds, the tutorial GUI matches the Betfair market well, but when there is a goal, and the market is suspended then reopened, the odds in the GUI jump around all over the place for a while, whereas the odds on Betfair are stable in comparison.

Here is another example of the problem on the greyhounds markets but this time over an hour before the race while the odds are not moving at all, in the GUI or on Betfair website.

[betdynamics]

What have you got your RollupStake value set to?

[clerk]

Maybe website Betfair just opened, and the entrance to your account is not complete?

[CaptnCanary]

This is a known issue. Simple use this method

Convert.ToDouble(data, System.Globalization.CultureInfo.InvariantCulture)

I am completely new to coding but have worked through the tutorial and managed to get it working. Unfortunately, the odds on my GUI are not showing up the same as on the Betfair website. I don't think the problem is quite the same as the one paypascal mentioned but could have a similar solution? I note the suggested code above but do not know where to put this to try it out.
Here is a screenshot of my GUI and Betfair taken at the same time on a Greyhound market. As you can see, most of it is right but the odds and amount available are not.



Any help would be much appreciated. Please tell me exactly where to put any suggested code. I will be working on more tutorials to learn C# to help me develop this program further and learn to automate placing bets.

[chewie22]

An old thread but I've just gone through the sample for the first time and as you spent the time to create it, I felt obliged to spend the time to thank you for your effort.

Thanks very much for the generous donation of your time and expertise.

[Letrix]

Solved

Finally I solved the problem.
Right click on Toolbox->Choose items...->browse file BetfairControls.dll

[Letrix]

MenuTree doesn't appear in my Toolbox

Hello.

Thank you so much for this very useful and detailed tutorial.

But I don't have experience in writing programs with windowsforms, buttons etc. and so do maybe stupid mistakes.

After 25th step MenuTree control doesn't appear in my Toolbox as well as BetfairControls Components and BetfairAPI Components groups of controls.
And it doesn't appear independently on weather I change from what class MenuTree inherits or not.

Does someone encountered such a problem?

I am using VS2010 professional.

[Escapee]

[denvb]

If anyone else has the same issue.

This is a known issue. Simple use this method

Convert.ToDouble(data, System.Globalization.CultureInfo.InvariantCulture)

[paypascal]

If anyone else has the same issue.
Change this UpdateMarketPricesCompressed() in CMarketData:

RDATA[ind].BackPrice[i].dOdds = BackPricesArr[iTmp].Length > 0 ? Convert.ToDouble(BackPricesArr[iTmp]) : 0;
RDATA[ind].BackPrice[i].dAmount = BackPricesArr[(iTmp + 1)].Length > 0 ? Convert.ToDouble(BackPricesArr[(iTmp + 1)]) : 0;

To:

if (BackPricesArr[iTmp].Length > 0) RDATA[ind].BackPrice[i].dOdds = Convert.ToDouble(BackPricesArr[iTmp].ToString().Replace(".", ","));
if (BackPricesArr[(iTmp + 1)].Length > 0) RDATA[ind].BackPrice[i].dAmount = Convert.ToDouble(BackPricesArr[(iTmp + 1)].ToString().Replace(".", ","));

And the same for laying.

[paypascal]

I've copied your source code quickly, but the odds aren't functioning right. Do you know what might be causing this?

I would have simply divided by 10 but the numbers change like this:
Essence Of Bubbles
30 305 31
Which really is:
3.0 3.05 3.1

CMarketData.RDATA[r].BackPrice[0].dOdds