dotnet/corefx

This repo contains the foundational libraries that make up the .NET Core development stack.

Joe4evr

@Joe4evr

p3 has a new API that I've been dying to use

Paul M Cohen

@paul1956

When I try .Net6 it does not like below, ApplyHighDpiModeEventArgs and ApplyHighDpiMode are not found

Private Sub MyApplication_ApplyHighDpiMode(sender As Object, e As My.ApplyHighDpiModeEventArgs) Handles Me.ApplyHighDpiMode
        e.HighDpiMode = HighDpiMode.PerMonitorV2
End Sub

I don't see anything about WinForms in the what's new or any breaking changes

alealpha2000

@alealpha2000

hello? can i ask a question about regex in .net?

i use this regex AA\((.+?)\) to get the text inside the parenthesis after AA in AA(text)-AB(text2)-

however if I have this AA()-AB(text2) then the regex matches the whole string and i get )-AB(text2 extracted out. how can i get an empty result if there is no text in the parenthesis after AA?

masonwheeler

@masonwheeler

Some people, when faced with a problem, think "I know, I'll use regular expressions!" Now they have two problems.

It's an old joke, but it's a joke that exists for a reason.

Joseph Musser

@jnm2

I used regex today, feels like it ended with zero problems.

Here it is: https://github.com/KirillOsenkov/SourceBrowser/pull/168/commits/627ef719253a83d2cbdbd2a12eb493fcde0a3af0#diff-023e663927ae67c29780153ab3cba446a9f79f1096a1b5ca78a4bb69937893d6R54-R62

Igor Velikorossov

@RussKie

You need to use non-greedy search

Joseph Musser

@jnm2

If possible, use [^)] rather than .. Regex is not good at handling distinctions in level of nesting though IIRC.

So e.g. AA\([^)]*\)

@RussKie It looks like they are already using non-greedy search because of the .+?

@alealpha2000 Is maybe part of the problem if you want to match a zero length that you are using + instead of *?

alealpha2000

@alealpha2000

So e.g. AA\([^)]*\)

that seems to work. thanks!

John Moreno

@jrmoreno1

@stephentoub : is new guid really not cryptographically secure in .net core?

CyrusNajmabadi

@CyrusNajmabadi

Guid is not cryptographically secure afaict

It may be on some platforms, but i don't believe there is any guarantee of that

masonwheeler

@masonwheeler

Guid's intent is right there in its name: it's meant to be globally unique, not cryptographically anything.

Isobel Cullen

@isobel-cullen

are completed Tasks immutable?

CyrusNajmabadi

@CyrusNajmabadi

they shoudl be.

Isobel Cullen

@isobel-cullen

excellent, thanks

Stephen A. Imhoff

@Clockwork-Muse

@isobel-cullen - If they're not, you have a pretty dangerous race condition.

ValueTask is mutable, more or less, but callers aren't supposed to muck with it (and are supposed to ignore it after successfully awaiting it, so don't have to deal with other modifications anyways).

Isobel Cullen

@isobel-cullen

yes that was my thoughts, but just wanted to confirm before I accidentally introduced weird race conditions into the code

CyrusNajmabadi

@CyrusNajmabadi

be very careful with ValueTask

Isobel Cullen

@isobel-cullen

I wasn't planning on using it, small number of tasks in Blazor, just need to share the results for simultaneous requests to the same resource

Paul M Cohen

@paul1956

Is there a chart component for .Net Core for Winforms? I need to dray a line graph I see one for framework.

Igor Velikorossov

@RussKie

https://github.com/AngeloCresta/winforms-datavisualization-net5

Paul M Cohen

@paul1956

@RussKie thanks

Will the framework controls not be ported?

Igor Velikorossov

@RussKie

Can you rephrase the quesiton?

Paul M Cohen

@paul1956

Will the framework data visualization controls be included in .net 6?

Or is above the long term solution?

Igor Velikorossov

@RussKie

No. https://github.com/dotnet/winforms-datavisualization is deprecated

Paul M Cohen

@paul1956

Thanks

Mohammad Hamdy Ghanem

@VBAndCs

@paul1956 Scientific Basic has advanced graphical capabilities as I see on the samples of the remade file. You may use whatever lib they are using for that:
https://github.com/xieguigang/sciBASIC

Paul M Cohen

@paul1956

@VBAndCs very nice but I hope to start with something simpler.

Urban

@Jinjinov

Hi! Does anyone know when .NET 6 Preview 4 comes out?

Igor Velikorossov

@RussKie

IIUIC it should release with the #Build

Valentyn Bondarenko

@bond-id

Hello. What would your recommend me to learn first -- WinForms or WPF? I just start off with C# and .NET. WinForms is much easier, but WPF is more flexible and yet much more complex. At this point, I tend to believe, WinForms would teach me faster this basic understanding of what a C# framework looks like, and how it can be used.

Igor Velikorossov

@RussKie

This question is very similar to the question "tabs vs spaces" ;)

Both frameworks have their pros and cons. They are both supported, maintained and innovated.

Like you said - Winfows Forms had is easier to start with, but may not very be suitable for graphics heavy or themed apps. WPF has a significantly steeper learning curve, but provides vector graphics support, theming, better databinding. And XAML for better or worse.

So pick your poison ;)

Igor Velikorossov

@RussKie

If you're starting - you can start with Windows Forms, play with it, then move on to WPF, and play with it too :)

Igor Velikorossov

@RussKie

If you have issues with zeinfoes

If you have issues with Windows Forms raise those in github.com/dotnet/winforms

Paul M Cohen

@paul1956

@RussKie I just realized its not a bug but a bug that was fixed between Framework and Core and I actually love the new behavior now that I understand it.

Eugene

@JohnyL

hey, guys! can't figure it out how to create and obtain the value of object property in new writable JSON:

Person person = new() { Age = 22, Name = "Linda" };
JsonObject json = new()
{
  ["person"] = JsonValue.Create(person)
};
WriteLine((int)json["person"]["Age"]);

however, I get the error:

Unhandled exception. System.InvalidOperationException: The node must be of type 'JsonObject'.
at System.Text.Json.Node.JsonNode.AsObject() in System.Text.Json.dll:token 0x60005bb+0x20
at System.Text.Json.Node.JsonNode.get_Item(String propertyName) in System.Text.Json.dll:token 0x60005c5+0x0
at ConsoleApp.Program.TestJsonNodes() in E:\Projects\ConsoleApp\Program.cs:line 121
at ConsoleApp.Program.Main(String[] args) in E:\Projects\ConsoleApp\Program.cs:line 81

Mohammad Hamdy Ghanem

@VBAndCs

I am using this function to get hash code to use in a test method. It is supposed to give the same hash for the same source string every time. That is true as long as I run on my win 7 32 bit machine, but when I ran the test on a win 7 64 bit machine it failed because the Hash function returned another hash for the same source string!
Why? Does the DM5 depend on the machine, the OS or the 32/64 bit architecture? Ir this is related to the ASCII encoding or ToString("X2")?

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