The same thing happens in Windows Explorer with DST. A file is changed at 10 AM standard time the Friday before DST changes. If you check the time stamp on Monday it will display an hour difference. File times are UTC-ish, it is the display time zone that changes. This was Win 7 behavior; I have not verified in Win 10.

You don't need 16 threads; you just need one thread and 16 (concurrent) queues of data points (one for each series / source). The form would have 16 "chart controls" (or more) in a "wrap panel"; one for each queue / source. If you're talking "millions" of data points, only some commercial software will do. On the other end, I've used one thread to poll all source devices at intervals; so still only 2 threads in total. It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it. ― Confucian Analects: Rules of Confucius about his food

We used it back in the day under Windows 3.1 to render TrueType fonts into bitmaps for use in our commercial ink-jet printers. There are other calls in that same area that give you character metrics and other useful information for your application. Software Zen: delete this;

Hi Gerry Schmitz, I know this, but I might to throw again the exception. This is more simple to debug like this. Each catched exception is specific. I know exactly within the specific method where it crashes. I am sorry! If we find the problem, I will make another code with just one try-catch and I will post to you. Other than that, do you know where I made a mistake? I recall to you that this code runs perfectly within Windows Forms Application. Have a nice day my friend! :)

They are correct now, and I used your set of tags to update two of my Tips/Tricks articles. All is good now. Many thanks for your help! Graham

There are any number of things that don't work with just one screen. For example when you full screen a video or image. For my home set up, games often take up one monitor and the other monitor allows me to pull up hints, etc on the other. One might think that hotswapping is an option in that case but quite a few games do not work well with that. And even hotswapping does not work when one is trying to follow a less than ideal map on the second screen. Another problem with only one screen is when that screen dies. Not only can you see nothing but have no way to test that it is actually the screen is the problem. With a second screen you can swap to check cables and video ports. (I have had a cable die which is completely hidden, is never manipulated and never touched, which was a surprise to me.) Larger monitors are harder to physically manage. It is not just the weight but the bulkiness. So if you need to re-organize, move etc it becomes harder. And of course back to the problem above, if you happen to drop that single monitor when doing that you are back to no monitor at all. Naturally if you have multiple setups in the house this is less of a problem but it still depends on that and it still requires manhandling a monitor from another location.

The lack of "windows" on web / mobile is a function of the (lame) browser and small (mobile) screens and / or lack of multi-tasking. The MR / VR headsets (also "mobile") have operating systems that feature "windows" ... because they can. The browser is just another app (window) in this case. Virtual space / holographics means windows are practical (again). It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it. ― Confucian Analects: Rules of Confucius about his food

I always thought NuGet was the stuff inside a three musketeers bar. The difficult we do right away... ...the impossible takes slightly longer.

After hours of working with the RDLC, making the charts the size of postage stamps, looking at the rectangle containers, upgrading the Nuget packages for Report Writer. Changing the Framework version, trying it on VS 2019, and on and on. And even working with the printer drivers. It's the Monitor. I bought a set of new Dell U2719, and so did my customer. Mine are set at 100% zoom, and his 125% zoom. I used one of my old monitors, a Dell U2412 as a 3rd monitor. If I set my U2719's to 125% zoom, and my U2412 to 125% zoom, and print with my winform app on the U2719, the chart objects don't scale. Then if I drag my app over to the U2412 at 125% and print, the chart objects print to scale. Go figure, just dragging the app over to my 3rd monitor prints correct. Drag the app back to one of the first 2 monitors prints incorrect. I think Dell needs to take a look into this on the U2719. And I know if I call Dell and create a support ticket, they will tell me to look in my spam folder and see if that fixes it. Oh Well, it's not my code at least. And it's not Microsoft. If it ain't broke don't fix it Discover my world at jkirkerx.com

How old are you? 100??

As Gerry mentioned, you need to hook up a handler for the mouse click and check the status of the CTRL key. You then go through all your child ViewModels and flip the property you databound to the IsExpanded property. This is how you can databind the IsExpanded property (and take IsSelected along for the ride if you need it - makes it VERY easy to select an item programmatically): <Setter Property="IsExpanded" Value="{Binding Path=IsExpanded, Mode=TwoWay}"/> <Setter Property="IsSelected" Value="{Binding Path=IsSelected, Mode=TwoWay}"/> In case you do not have a view model for your tree items you have two options: 1. Switch to WinForm 2. Introduce the view model I supposed you could also try calling methods on the tree view control itself to find it's children, but it will be a LOT more code than the viewmodel, specifically when it start delay loading and virtualizing etc. WPF was designed for a ViewModel, and going against that is always asking for pain.

Try asking in the WPF forum: Silverlight / WPF Discussion Boards[^] "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt AntiTwitter: @DalekDave is now a follower!

I'm guessing lots of those script errors will be ads, but there are sure to be some jQuery issues since we dropped IE support many, many moons ago. However, the site still works fine on my 2010 iPad! cheers Chris Maunder

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Just a guess, since Windows Forms seem to be morphing into WPF ... Changing / selecting tabs fires its own loaded and unloaded events (in WPF) and it looks like your UpDown is on a tab. It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it. ― Confucian Analects: Rules of Confucius about his food

Excellent! I see you recognized "this" (the data source) as the form. It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it. ― Confucian Analects: Rules of Confucius about his food

That would not make you Happi