Bar Request

[blar58]

Hi

I have a question related to the BarRequest. At State Historical I am requesting a bars request.
I have created a method to download the bar series called RequestSeries().
Sometimes ( not every time ) I get an object not set to an instance of an object error.

I have included the method call inside a dispatcher. Could that be the source of my problem ?

ChartControl.Dispatcher.InvokeAsync((Action)(() =>
{
RequestSeries();
}}));

Should I call the method directly ?

Thank you !

[NinjaTrader_Jim]

Hello blar58,

Thanks for your post.

BarsRequests are asynchronous operations. Without a deeper understanding of your code, I am only left to speculate, but I do not think that using a dispatcher is an issue here since the operation is already asynchronous.

You could test with a timer that checks for the returned bars after a "reasonable amount of time" to confirm if you are hitting an issue where the BarsRequest did not complete where your null reference is seen.

I could not provide further insight for making this operation synchronous, but other community members may be able to share their insight if they have been able to use BarsRequests in a synchronized fashion.

If this does not resolve your inquiry, could you share a bit more code that can demonstrate what you are doing? A testable example would be helpful to see what exactly it is that you are hitting.

We look forward to assisting.