CodeProject Latest postings for .NET (Core and Framework)

HOW TO ANSWER A QUESTION

Chris Maunder — Thu, 16 Jul 2009 13:09:00 GMT

Apologies for the shouting but this is important.

When answering a question please:

Read the question carefully
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar
If a question is poorly phrased then either ask for clarification, ignore it, or mark it down. Insults are not welcome
If the question is inappropriate then click the 'vote to remove message' button

Insults, slap-downs and sarcasm aren't welcome. Let's work to help developers, not make them feel stupid.

cheers,
Chris Maunder

The Code Project Co-founder
Microsoft C++ MVP

How to get an answer to your question

Chris Maunder — Thu, 16 Jul 2009 13:05:00 GMT

For those new to message boards please try to follow a few simple rules when posting your question.

Choose the correct forum for your message. Posting a VB.NET question in the C++ forum will end in tears.
Be specific! Don't ask "can someone send me the code to create an application that does 'X'. Pinpoint exactly what it is you need help with.
Keep the subject line brief, but descriptive. eg "File Serialization problem"
Keep the question as brief as possible. If you have to include code, include the smallest snippet of code you can.
Be careful when including code that you haven't made a typo. Typing mistakes can become the focal point instead of the actual question you asked.
Do not remove or empty a message if others have replied. Keep the thread intact and available for others to search and read. If your problem was answered then edit your message and add "[Solved]" to the subject line of the original post, and cast an approval vote to the one or several answers that really helped you.
If you are posting source code with your question, place it inside <pre></pre> tags. We advise you also check the "Encode "<" (and other HTML) characters when pasting" checkbox before pasting anything inside the PRE block, and make sure "Use HTML in this post" check box is checked.
Be courteous and DON'T SHOUT. Everyone here helps because they enjoy helping others, not because it's their job.
Please do not post links to your question into an unrelated forum such as the lounge. It will be deleted. Likewise, do not post the same question in more than one forum.
Do not be abusive, offensive, inappropriate or harass anyone on the boards. Doing so will get you kicked off and banned. Play nice.
If you have a school or university assignment, assume that your teacher or lecturer is also reading these forums.
No advertising or soliciting.
We reserve the right to move your posts to a more appropriate forum or to delete anything deemed inappropriate or illegal.

cheers,
Chris Maunder

The Code Project Co-founder

Microsoft C++ MVP

Remote debugging on Raspberry Pi in Visual Studio Code.

Jerry Walter 2024 — Tue, 23 Apr 2024 01:02:00 GMT

I have a Raspberry PI (Linux-arm) with sense sense hat, being accessed on Windows 11 via ssh. The source code is on the Raspberry pi and I have the Visual Studio Code (latest) loaded on the Windows 11 machine. I have the remote SSH and remote SSH editing extensions loaded in VS.

The version of dotnet on the Pi is
.NET SDK:
Version: 7.0.100
Commit: e12b7af219

Runtime Environment:
OS Name: raspbian
OS Version: 11
OS Platform: Linux
RID: linux-arm
Base Path: /home/pi/.dotnet/sdk/7.0.100/

Host:
Version: 7.0.0
Architecture: arm
Commit: d099f075e4

.NET SDKs installed:
7.0.100 [/home/pi/.dotnet/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 7.0.0 [/home/pi/.dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 7.0.0 [/home/pi/.dotnet/shared/Microsoft.NETCore.App]

I can build and run the application on the Raspberry PI, with no problems. The part I am missing is to be able to debug the application remotely.

I have gone through a few examples on the net, but nothing seems to be helpfull.

Any suggestions ?
Thanks

hi please help me with a filter on view

Chrayet Mahdi — Sat, 09 Mar 2024 17:13:00 GMT

hi have a table with email history that when i click on each subject it call external link.

my problem is how can i filter my record per Id, because on same table they are a more than same username but with different value cells.

on

@Html.Raw(rec.MailBodyHtml)

on debug mode i see 5 record for username that's fine but i want filter with primary key of the table on sql.

note the primary key on table have no relation with other id .

this is my code on view side :

<div>
    <div class="container">
        <div class="row">
            <div class="col-md-12">
                <div class="panel panel-default">
                    <div style="text-align:right;padding: 5px 5px 0 0;font-size: 14px;">
                        
                        <a href="#" class="text-decoration-none" onclick="printDivContent();">
                            Imprimer 
                            
                        </a>
                    </div>

                    <div id="printContent">
                        @foreach (var rec in Model)

                        {
                            @Html.Raw(rec.MailBodyHtml)
                        }
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<div class="tab-content">
    <!--Start Historique Email-->
    <div id="Historique_Email" class="tab-pane active">
        <div class="sf-bs-data-table">
            <div class="table-responsive">
                <table class="table table-striped table-bordered example-dt-table" style="width:100%">
                    <thead>
                        <tr>
                            <th>Date</th>
                            <th>Sujet</th>
                            <th>Nombres</th>
                            <th>Nom</th>
                            <th>Email</th>
                            <th>Type</th>
                        </tr>
                    </thead>
                    <tbody>
                        @{
                            //foreach (var rec in Model.ReceivedAlerts.OrderBy(c => c.Date))
                            //foreach (var rec in Model.ReceivedAlerts.Where(t => t.Email != null))
                            foreach (var rec in Model)

                            {
                                <tr>
                                    <td>@rec.Date.ToString("dd-MM-yyyy hh:ss")</td>
                                    <td>
                            
                                    <a href="@Url.Action("BodyHtml", "Entreprise", new { Id = rec.UserId })" target="_blank"> @rec.MailSubject </a>
                                    </td>
                                    <td>@rec.Nb</td>
                                    <td>@rec.NomAlerte</td>
                                    <td>@rec.Email</td>
                                    <td>@rec.TypeAlerte</td>
                                </tr>
                            }
                        }
                    </tbody>
                </table>
            </div>
        </div>
    </div>

Advice on a product to convert PDF to TIFF or JPEG.

PhilMcGahan — Sat, 02 Mar 2024 14:00:00 GMT

I want to convert PDF files into an image file that can be inserted into the body of an email. SO instead of attaching an email, the images will be in the body.

My question to you is, can you recommend a product for doing this task?
Have you had a negative experience with any product you think I should avoid?
Thank you for your advice.

Phil McG

C#, WPF project

Member 16211985 — Wed, 28 Feb 2024 13:50:00 GMT

I have Report automation tool created in WPF and the code is written in C# in visual stdudio. I have many reports in my RA tool. Now I want to create Pitchbook from these reports. Say I already have a class called ABC which runs a report called ABC and has 3 slides. I want to create something like to pick 2 slides from this report and 2 slides from another report like xyz and create a book. This process should be automated. Please let me know how can I do this

Form Cancel Property paired up with Button DialogResult Property is Diabolical!

Brian L Hughes — Wed, 28 Feb 2024 04:04:00 GMT

I decided to "upgrade" my dialog box forms with Accept and Cancel buttons properties! Now my dialog boxes were more user friendly.

A week later I began testing on one of these dialog forms which contained a lot of buttons and content, but I ran into a bit of a pickle. One of the many buttons had a click event coded to open a 2nd level modal dialog and when this 2nd dialog box closed the parent dialog it was invoked from closed as well. I couldn't figure out why for the longest time but luckily found the answer on the www.

When you set a form's "Cancel" property to a button the genius behind VS sets that button's "DialogResult" property to DialogResult.Cancel. When the button is clicked no matter what happens inside the buttons click handler the parent form will close with a DialogResult.Cancel.

If you copy a Cancel button with DialogResult property set to DialogResult.Cancel and paste it on a form the genius behind VS copies the DialogResult property as well, you now have two buttons with DialogResult.Cancel on your form, no warnings of course, it's what you intended to do!

I didn't even know buttons had the "DialogResult" property and that it could be used to automatically close a form, obviously it was there all along but I skimmed past it and never tried to experiment with it.

Funny thing is the form's Accept property does not change the OK button's DialogResult property to OK when that button is selected.

I suppose this feature helps eliminate the need to code Cancel button click events, but I'm so used to doing it anyway I probably won't bother using it in the future.

Any idea when this feature was added? Was it there all along?

Gantt chart for management app c# Windows Forms

Ionut Ciocan — Tue, 20 Feb 2024 23:17:00 GMT

Hello all.

I need to create a gantt chart using data from employee table. It need to display the period of time, start date, end date and the name of the task. 

Can someone help me with this?

(Please, i`m in the last year of college and i need to finish it in time )

Visual Studio 2022 and Angular Language Service

Z.C.M. — Thu, 08 Feb 2024 22:19:00 GMT

Sorry, couldn't find a more appropriate forum to post this.

We have a Angular/.NET Core app that we are attempting to upgrade to .NET 8. I have the Angular Language Service installed and working with no problem in VS2019. With VS2022, not so much. Every time I load any project with Angular code I get this error,

"Task Failed - Activating language client Angular Language Service Extension: The JSON-RPC connection with the remote party was lost before the request could complete."

I've tried everything I can think of, including creating a ticket with MS. Surprisingly, they actually attempted to help resolve the problem. We renamed the cache folder, ran VS as admin, reset all options, disabled the extension auto update, repaired VS2022 (appropriate reboots), checked the Microsoft.VisualStudio.Default.err file, checked the log files (%temp%\VSLogs), uninstalled/reinstalled VS2022 (cleared temp files, rebooted), insure Node.js is installed, insure Win11SDK (both) are installed.

I'm at a complete loss as is everyone else. Other devs working on Angular/.NET projects in VS2022 do not have this issue. I was seeing this error before attempting to upgrade anything on the solution. Oddly, break points in TypeScript files work, but viewing the value of TypeScript variables does not work nor does F12 in TypeScript code. I'd rather get this working in VS2022 instead of using VS Code for Angular development and VS2022 for .NET, that's just ugly and messy.

"...JavaScript could teach Dyson how to suck." -- Nagy Vilmos

How to refer to the AspNetUser table(which is the default table created upon using AspNetCore.Identity;) in my Job Table in .NET Core 6

Member 13975739 — Sun, 04 Feb 2024 15:53:00 GMT

I have created tables using ASP.NET Core Identity. I need to refer my `AspNetUser` table to my `Job` table. I have created a `CustomIdentity` class which inherits from `IdentityUser`.

This is my code:

    using Microsoft.AspNetCore.Identity;

    namespace InventoryManagement.Models
    {
        public class CustomIdentity :IdentityUser
        {
            public string  IsEngineer { get; set; }
            public string  authpassword { get; set; }
        }
    }

And this is my `DbContext` class for `IdentityDbContext`:

    using Microsoft.AspNetCore.Identity;
    using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
    using Microsoft.EntityFrameworkCore;

    namespace InventoryManagement.Models.Data
    {
        public class AuthDbContext : IdentityDbContext<CustomIdentity>
        {
            public AuthDbContext(DbContextOptions<AuthDbContext> options) :base(options)
            {
            }
        }
    }

`ASPNETUser` table got created and I am able to insert values into it using `UserManager` to register users. I need to refer this user in my Job table. And here is my code for `Jobdbcontext` where I declare all my other tables:

    using Microsoft.EntityFrameworkCore;

    namespace InventoryManagement.Models.Data
    {
        public class JobDBcontext : DbContext
        {
           public JobDBcontext(DbContextOptions<JobDBcontext> options) : base(options) 
           {
           }

           public DbSet<Job> Jobs { get; set; }
           public DbSet<Customer> Customers { get; set; }
           public DbSet<JobType> Jobtype { get; set; }
           public DbSet<ManufacturingBay> Manufacturingbay { get; set; }
           public DbSet<ProjectCategory> Projectcategory { get; set; }
           public DbSet<Currency> Currency { get; set; }
           public DbSet<Category> ItemCategory { get; set; }
           public DbSet<Budget> ItemBudget { get; set; }
           public DbSet<SubCategory> ItemSubcategory { get; set; }
           public DbSet<ItemMaster> ItemMaster { get; set; }
           public DbSet<Bom> Bom { get; set; }
           public DbSet<Test> Test { get; set; }
           public DbSet<UOM> UomMaster { get; set; }
           public DbSet<PR> PR { get; set; }
           public DbSet<PRDetails> PRDetails { get; set; }
           public DbSet<Supplier> Supplier { get; set; }
           public DbSet<Purchase> Purchase { get; set; }
           public DbSet<PurchaseDetails> PurchaseDetails { get; set; }

           protected override void OnModelCreating(ModelBuilder modelBuilder)
           {
                if (modelBuilder == null)
                {
                    throw new ArgumentNullException(nameof(modelBuilder));
                }

                modelBuilder.Entity<JobType>().HasKey(jt => jt.Jobtypeid);
                modelBuilder.Entity<ProjectCategory>().HasKey(jt => jt.Pid);
                modelBuilder.Entity<Currency>().HasKey(jt => jt.cid);
                modelBuilder.Entity<Bom>().HasKey(jt => jt.BID);

                modelBuilder.Entity<Budget>()
                            .HasKey(b => b.ID);

                modelBuilder.Entity<Category>()
                    .HasKey(c => c.CategoryId);
                modelBuilder.Entity<SubCategory>()
                    .HasKey(s => s.SubCategoryId);
                 modelBuilder.Entity<ItemMaster>()
                    .HasKey(i => i.itemid);
                modelBuilder.Entity<UOM>()
                  .HasKey(i => i.uid);
                // Configure relationships
                modelBuilder.Entity<Budget>()
              .HasMany(b => b.categories)
              .WithOne(c => c.Budget)
              .OnDelete(DeleteBehavior.Cascade);
                modelBuilder.Entity<Category>()
                    .HasMany(c => c.SubCategories)
                    .WithOne(i => i.category)
                     .OnDelete(DeleteBehavior.Cascade);

                //  modelBuilder.Entity<SubCategory>()
                //      .HasMany(s => s.ItemMasters)
                //      .WithOne(i => i.subcategory)
                //      .HasForeignKey(i => i.category)
                //      .OnDelete(DeleteBehavior.Cascade);

                // Other configurations for your entity can go here

                //modelBuilder.Entity<PR>()
                //              .HasKey(p => p.Prid);

                //modelBuilder.Entity<PRDetails>()
                //    .HasKey(d => d.Prtblid);

                //modelBuilder.Entity<PRDetails>()
                //    .Property(d => d.Prid);  // Ensure Prid property is properly configured, adjust as needed

                //modelBuilder.Entity<PRDetails>()
                //    .HasOne(d => d.PR)
                //    .WithMany(p => p.PRDetails)
                //    .HasForeignKey(d => d.Prid)
                //    .OnDelete(DeleteBehavior.Restrict); // or specify other actions as needed

                // Additional configurations for other entities and relationships

                modelBuilder.Entity<PR>()
                  .HasKey(p => p.Prid);

                modelBuilder.Entity<PRDetails>()
                    .HasKey(d => d.PrDetailId);

                modelBuilder.Entity<PRDetails>()
                    .HasOne(d => d.PR)
                    .WithMany(p => p.PRDetails)
                    .HasForeignKey(d => d.Prid)
                    .OnDelete(DeleteBehavior.NoAction); // Change this to NoAction or other options

                modelBuilder.Entity<PRDetails>()
                    .HasOne(d => d.Bom)
                    .WithMany() // Assuming Bom doesn't have a navigation property back to PRDetails
                    .HasForeignKey(d => d.Bomid)
                    .OnDelete(DeleteBehavior.Cascade);

                base.OnModelCreating(modelBuilder);

                modelBuilder.Entity<Purchase>()
                 .HasKey(p => p.POID);

                modelBuilder.Entity<PurchaseDetails>()
                    .HasKey(d => d.potblid);

                modelBuilder.Entity<PurchaseDetails>()
                    .HasOne(d => d.Purchase)
                    .WithMany(p => p.PurchaseDetails)
                    .HasForeignKey(d => d.POID)
                    .OnDelete(DeleteBehavior.NoAction); // Change this to NoAction or other options

                modelBuilder.Entity<PurchaseDetails>()
                    .HasOne(d => d.prdetails)
                    .WithMany() // Assuming Bom doesn't have a navigation property back to PRDetails
                    .HasForeignKey(d => d.PrDetailId)
                    .OnDelete(DeleteBehavior.Cascade);
                base.OnModelCreating(modelBuilder);
                modelBuilder.Entity<Job>()
               .HasOne(j => j.User)
               .WithMany()
               .HasForeignKey(j => j.UserId)
               .IsRequired();
            }
        }
    }

This is my `Job` model where I am referencing my CustomIdentity.

    namespace InventoryManagement.Models
    {
        public class Job
        {
            public int Jobsequenceno { get; set; }
            public int JobId { get; set; }

            public string JobName { get; set; } 
      
            public int Qty { get; set; }
            public Customer Customer { get; set; }

            public DateTime JobDate { get; set; }
            public JobType JobType { get; set; }

            public ManufacturingBay ManufacturingBay { get; set; }
            public ProjectCategory Projectcategory { get; set; }
            public Currency currency { get; set; }
            public Double JobRate { get; set; }
            public Double Ordervalue { get; set; }
            public Double Ordervalueinbasecurrency { get; set; }

            public string  JobDescription { get; set; }
            public string Paymentterms { get; set; }
            public string Deliveryterms { get; set; }

            public string UserId { get; set; }
            public CustomIdentity User { get; set; }
        }
    }

Upon running migrations of 2 `DbContext` tables are created ..but upon running migration of JobDBcontext another class called customidentity is created which has exactly same column like my ASPNetUser and my job table is referring to that class.

    ALTER TABLE [dbo].[Jobs] WITH CHECK 
        ADD CONSTRAINT [FK_Jobs_CustomIdentity_UserId] 
            FOREIGN KEY([UserId]) REFERENCES [dbo].[CustomIdentity] ([Id])
            ON DELETE CASCADE  

I want the Job  table to refer to the `ASPNETUSER` table which is having value instead of this CustomIdentity table.... I am able to insert user data to Job table.but upon listing job I am referring to `CustomIdentity` which is showing null..

     [HttpGet("List")]
     public async Task<IActionResult> List()
     {
         // use dbContext to read the tags
         var Joblist = await jobdbcontext.Jobs.Include(j => j.Customer).Include(j => j.JobType).Include(j => j.ManufacturingBay).
             Include(j => j.Projectcategory).
              Include(j => j.CustomIdentity).
              Include(j => j.currency).
         Include(j =>j.User).
             ToListAsync();
         return View(Joblist);
     }

How to resolve this?so that my Job table will refer ASPNetUser table which is having value instead of CustomIdentity table.CustomIdentity model is created to add extra columns in my ASPNetUser table.I am new to this ..can anyone help on this ?

Need to publish?

Richard Andrew x64 — Sun, 04 Feb 2024 14:05:00 GMT

Does a .NET 8 application need to be "published" before it can run properly?

Or is building it good enough?

The difficult we do right away...
...the impossible takes slightly longer.

Can anyone recommend a tool to...

Richard Andrew x64 — Sun, 04 Feb 2024 01:42:00 GMT

A tool for diagnosing which DLL is unable to be loaded by a subject DLL? I've used DUMPBIN to list the static dependencies of the DLL and they are very few and all of them are in the same directory as the subject DLL.

This isn't my DLL so I have no idea what it's doing in its DllLoad routine. But the Windows loader is just a black box. It gives no insight into what's going on during the DLL load.

This is a .NET 8 project that is calling functions in the subject DLL through pinvoke, so maybe the .NET loader knows something.

Anyone know how to debug this?

The difficult we do right away...
...the impossible takes slightly longer.

Send String/Text to a other window [vb.net / API]

Seek51 — Tue, 05 Dec 2023 08:01:00 GMT

Hello,

I want to send a message/test to a other windows.
It should save me many time in putting me many time
strings/textes in MS Project, Outlook, ... ...

Therefore i want to use the Windwos API in VB.net.

I tried it in this way, but it doesn't work.
I get the windows handle, but the text isn't set at notepad or in a other window.

BASIC

Private Sub tmr_Worktimer_Tick(sender As Object, e As EventArgs) Handles tmr_Worktimer.Tick
        If IsKeyPressed(Keys.VK_SHIFT) Then
            Dim aPoint As New POINTAPI
            GetCursorPos(aPoint)
            Dim hWnd As IntPtr = WindowFromPoint(aPoint.x, aPoint.y)
            SetForegroundWindow(hWnd)
            SetWindowTextUnicode(hWnd, WM_SETTEXT, IntPtr.Zero, "Test")
        End If
    End Sub

My API Calls are:

BASIC

Public Structure Keys
        Const VK_BACK As Short = &H8  ' Backspace key
        Const VK_TAB As Short = &H9  ' Tab key
        Const VK_RETURN As Short = &HD  ' Enter key
        Const VK_SHIFT As Short = &H10  ' Shift key
        Const VK_CONTROL As Short = &H11  ' STRG key
        Const VK_MENU As Short = &H12  ' Alt key
        Const VK_CAPITAL As Short = &H14  ' Caps Lock
        Const VK_ESCAPE As Short = &H1B  ' Escape
        Const VK_SPACE As Short = &H20  ' Space
        Const VK_PRIOR As Short = &H21  ' PageUp
        Const VK_NEXT As Short = &H22  ' PageDown
End Structure

 <DllImport("user32.dll", SetLastError:=True, CharSet:=CharSet.Auto)>
    Public Function GetAsyncKeyState(ByVal vKey As Int32) As Short
    End Function

 Public Function IsKeyPressed(ByVal KeyToCheck As Short) As Boolean
        Dim res As Short
        res = GetAsyncKeyState(KeyToCheck)
        If res < 0 Then ' -32768 Then
            IsKeyPressed = True
        Else
            IsKeyPressed = False
        End If
    End Function
	
	    <System.Runtime.InteropServices.StructLayout(Runtime.InteropServices.LayoutKind.Sequential)>
    Public Structure POINTAPI
        Dim x As Integer
        Dim y As Integer
    End Structure
	
	    <DllImport("user32.dll", ExactSpelling:=True, SetLastError:=True)>
    Public Function GetCursorPos(ByRef lpPoint As POINTAPI) As <MarshalAs(UnmanagedType.Bool)> Boolean
    End Function
	
	    <DllImport("user32.dll")>
    Public Function WindowFromPoint(xPoint As Integer, yPoint As Integer) As IntPtr
    End Function
	
	    <DllImport("user32.dll")>
    Public Function SetForegroundWindow(hWnd As IntPtr) As Boolean
    End Function
	
	    Friend Const WM_SETTEXT As Integer = 12

    <DllImport("user32.dll", EntryPoint:="SendMessageW", CharSet:=CharSet.Unicode)>
    Public Function SetWindowTextUnicode(ByVal hWnd As IntPtr, ByVal Msg As Integer, ByVal wParam As IntPtr, ByVal lParam As String) As IntPtr
    End Function

Any ideas? Is there a other way to send the string/text?

LibVLCSharp hosted in mcr.microsoft.com/dotnet/aspnet:6.0 Docker image inside a linux context

etodemerzel — Thu, 30 Nov 2023 22:29:00 GMT

Hello everyone,
I have a case with vlc on my ubuntu container. Indeed, my c# method :

<pre lang="C#">if (File.Exists(video.Path))
{
using (var libVLC = new LibVLC(enableDebugLogs: true))
{
this.logger.LogInformation($"ImageDetectionWorker.StartFramesPredictionVLC : VLC lib initialized")

if (Directory.Exists("/shared-volume/vlc" == false))
{
Directory.CreateDirectory("/shared-volume/vlc")
}

libVLC.SetLogFile($"/shared-volume/vlc/vlc.log";)

var absoluteVideoPath = new FileInfo(video.Path.FullName)

using (var media = new Media(libVLC, absoluteVideoPath, options: "--no-audio --no-xlib --no-sout-audio"))
{
this.logger.LogInformation($"ImageDetectionWorker.StartFramesPredictionVLC : VLC media initialized")

using (var mediaPlayer = new MediaPlayer(media))
{
this.logger.LogInformation($"ImageDetectionWorker.StartFramesPredictionVLC : VLC media player initialized")

mediaPlayer.ToggleMute()

Throw this logs in my container:

info: EigenVectors.PredictionWrite.Api.Workers.ImageDetectionWorker[0] ImageDetectionWorker.StartFramesPredictionVLC : Start to initialize VLC core info: EigenVectors.PredictionWrite.Api.Workers.ImageDetectionWorker[0] ImageDetectionWorker.StartFramesPredictionVLC : VLC core initialized [00007f897c0027e0] main libvlc debug: VLC media player - 3.0.20 Vetinari [00007f897c0027e0] main libvlc debug: Copyright © 1996-2023 the VideoLAN team [00007f897c0027e0] main libvlc debug: revision 3.0.20-0-g6f0d0ab126b [00007f897c0027e0] main libvlc debug: configured with ./configure '--build=x86_64-linux-gnu' '--prefix=/usr' '--includedir=${prefix}/include' '--mandir=${prefix}/share/man' '--infodir=${prefix}/share/info' '--sysconfdir=/etc' '--localstatedir=/var' '--disable-option-checking' '--disable-silent-rules' '--libdir=${prefix}/lib/x86_64-linux-gnu' '--runstatedir=/run' '--disable-maintainer-mode' '--disable-dependency-tracking' '--disable-debug' '--config-cache' '--disable-update-check' '--enable-fast-install' '--docdir=/usr/share/doc/vlc' '--with-binary-version=3.0.20-0+deb11u1' '--enable-a52' '--enable-aa' '--enable-aribsub' '--enable-avahi' '--enable-bluray' '--enable-caca' '--enable-chromaprint' '--enable-chromecast' '--enable-dav1d' '--enable-dbus' '--enable-dca' '--enable-dvbpsi' '--enable-dvdnav' '--enable-faad' '--enable-flac' '--enable-fluidsynth' '--enable-freetype' '--enable-fribidi' '--enable-gles2' '--enable-gnutls' '--enable-harfbuzz' '--enable-jack' '--enable-kate' '--enable-libass' '--enable-libmpeg2' '--enable-libxml2' '--enable-lirc' '--enable-mad' '--enable-matroska' '--enable-mod' '--enable-mpc' '--enable-mpg123' '--enable-mtp' '--enable-ncurses' '--enable-notify' '--enable-ogg' '--enable-opus' '--enable-pulse' '--enable-qt' '--enable-realrtsp' '--enable-samplerate' '--enable-sdl-image' '--enable-sftp' '--enable-shine' '--enable-shout' '--enable-skins2' '--enable-soxr' '--enable-spatialaudio' '--enable-speex' '--enable-svg' '--enable-svgdec' '--enable-taglib' '--enable-theora' '--enable-twolame' '--enable-upnp' '--enable-vdpau' '--enable-vnc' '--enable-vorbis' '--enable-x264' '--enable-x265' '--enable-zvbi' '--with-kde-solid=/usr/share/solid/actions/' '--disable-aom' '--disable-crystalhd' '--disable-d3d11va' '--disable-decklink' '--disable-directx' '--disable-dsm' '--disable-dxva2' '--disable-fdkaac' '--disable-fluidlite' '--disable-freerdp' '--disable-goom' '--disable-gst-decode' '--disable-libtar' '--disable-live555' '--disable-macosx' '--disable-macosx-avfoundation' '--disable-macosx-qtkit' '--disable-mfx' '--disable-microdns' '--disable-opencv' '--disable-projectm' '--disable-schroedinger' '--disable-sparkle' '--disable-srt' '--disable-telx' '--disable-vpx' '--disable-vsxu' '--disable-wasapi' '--enable-alsa' '--enable-dc1394' '--enable-dv1394' '--enable-libplacebo' '--enable-linsys' '--enable-nfs' '--enable-udev' '--enable-v4l2' '--enable-wayland' '--enable-libva' '--enable-vcd' '--enable-smbclient' '--disable-oss' '--enable-mmx' '--enable-sse' '--disable-neon' '--disable-altivec' '--disable-omxil' 'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2 -ffile-prefix-map=/build/reproducible-path/vlc-3.0.20=. -fstack-protector-strong -Wformat -Werror=format-security ' 'LDFLAGS=-Wl,-z,relro -Wl,-z,now' 'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2' 'CXXFLAGS=-g -O2 -ffile-prefix-map=/build/reproducible-path/vlc-3.0.20=. -fstack-protector-strong -Wformat -Werror=format-security ' 'OBJCFLAGS=-g -O2 -ffile-prefix-map=/build/reproducible-path/vlc-3.0.20=. -fstack-protector-strong -Wformat -Werror=format-security' [00007f897c0027e0] main libvlc debug: searching plug-in modules [00007f897c0027e0] main libvlc debug: loading plugins cache file /usr/lib/x86_64-linux-gnu/vlc/plugins/plugins.dat [00007f897c0027e0] main libvlc debug: recursively browsing `/usr/lib/x86_64-linux-gnu/vlc/plugins' [00007f897c0027e0] main libvlc debug: plug-ins loaded: 519 modules [00007f897c001ad0] main logger debug: looking for logger module matching "any": 4 candidates [00007f897c001ad0] main logger debug: using logger module "console" [00007f897c0027e0] main libvlc debug: translation test: code is "C" [00007f8984270880] main keystore debug: looking for keystore module matching "memory": 4 candidates [00007f8984270880] main keystore debug: using keystore module "memory" [00007f897c0027e0] main libvlc debug: CPU has capabilities MMX MMXEXT SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX AVX2 FPU info: EigenVectors.PredictionWrite.Api.Workers.ImageDetectionWorker[0] ImageDetectionWorker.StartFramesPredictionVLC : VLC lib initialized info: EigenVectors.PredictionWrite.Api.Workers.ImageDetectionWorker[0] ImageDetectionWorker.StartFramesPredictionVLC : VLC media initialized info: EigenVectors.PredictionWrite.Api.Workers.ImageDetectionWorker[0] ImageDetectionWorker.StartFramesPredictionVLC : VLC media player initialized info: EigenVectors.PredictionWrite.Api.Workers.ImageDetectionWorker[0] ImageDetectionWorker.StartFramesPredictionVLC : True ALSA lib confmisc.c:767:(parse_card) cannot find card '0' ALSA lib conf.c:4745:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings

My Dockerfile :

FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build-env
WORKDIR /app
EXPOSE 80

COPY . .
RUN dotnet restore MyProject.csproj
RUN dotnet publish MyProject.csproj -c Release -o out --no-restore

FROM mcr.microsoft.com/dotnet/aspnet:6.0
WORKDIR /app
COPY --from=build-env /app/out .
RUN apt-get update && apt-get install -y vlc && apt-get install libvlc-dev
ENV LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu/:$LD_LIBRARY_PATH
ENTRYPOINT ["dotnet", "MyProject.dll"]

I've tried a lot of package to install on the container without any success

How to "update" old .NET code to current versions

lewist57 — Thu, 30 Nov 2023 21:38:00 GMT

Lets start off with a little honesty - I am unsure of exactly what I am asking, but I am sure that someone can help.

So I currently have Visual Studio 17.8 installed. I predominantly work in VB.NET. I have some older code downloaded from Github, that works just fine (as binary) when it was put together say 10 or more years ago. The crux of the problem is that you (and by you, I mean me) cannot in some cases simply drop it into VS 17.8 without several errors.

Therefore, the naïve question is - can anyone point to a good source of information that would guide me on how to "upgrade" older code to eliminate errors in compiling with the current versions of VS and .NET?

THanks.

Pound to fit, paint to match

Working with fonts and chars (⬤) in Win forms and OS versions, 10 compared to 7

jkirkerx — Tue, 24 Oct 2023 21:34:00 GMT

I wrote an app in Win Forms, and I'm using a circle in ListView, as a pleasant indicator. On my rigs, running Win 10 at home and 11 at the office, the ⬤ char works no problem. But on the customers computers running Win 7, I get the tall square symbol.

So I changed the Font in my Win Forms App to Segoe UI, which looks nice, but I still get the tall rectangle. I checked the customers computers to see what fonts are loaded, and Segoe UI is there.

Then I did research, and a few online posts talk about font searching by the OS, which dates back to Windows XP. If the Char ⬤ doesn't exists in the Font file, the OS will search for that char in other font files, such as webdings.ttf. Found a post about using the RegEdit /LocalMachine/Software/WindowsNt/Fonts and having to edit font mappings, which looked complicated.

ChatGpt says that I can MeasureText, to see if a char exists, and if not choose another char sysmbol.But the char always exists.

Dim font As New Font("Segoe UI", 9, FontStyle.Regular)

' The character you want to check (e.g., the copyright symbol ©)
Dim specialChar As Char = "⬤"

' Check if the font can display the character
Dim canDisplayChar As Boolean = TextRenderer.MeasureText(specialChar, font).Width > 0
If canDisplayChar Then
    Return "⬤"
Else
    Return "X"
End If

I'm just wondering if someone here has figured this out, and can share what they did. The customer really wants the ⬤.

On a side note or question, I can set a color for the circle in ListView on .Net Core 7, but can't set the color of the circle in .Net Framework 4.6.1.

If it ain't broke don't fix it
Discover my world at jkirkerx.com

Capturing a still from a RTSP stream

Member 14995896 — Tue, 19 Sep 2023 09:43:00 GMT

Good morning,

I'm trying to capture an image from a RTSP stream using ffmpeg.

I'm struggling, it is as if ffmpeg isnt working. A snip from my code is below:

using System.Runtime.InteropServices;
using FFmpeg.AutoGen;
using SixLabors.ImageSharp.Formats.Png;
using SixLabors.ImageSharp.Formats;

Class Program
{
    unsafe static void Main(string[] args)
    {
string inputUrl = "rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mp4"; 


ffmpeg.avformat_open_input(&pFormatContext, inputUrl, null, null);

The error that I'm receiving which is related to the last line of code is:

System.NotSupportedException
  HResult=0x80131515
  Message=Specified method is not supported.
  Source=FFmpeg.AutoGen
  StackTrace:
   at FFmpeg.AutoGen.DynamicallyLoadedBindings.<>c.<Initialize>b__2_1284(AVFormatContext** <p0>, String <p1>, AVInputFormat* <p2>, AVDictionary** <p3>)
   at FFmpeg.AutoGen.ffmpeg.avformat_open_input(AVFormatContext** ps, String url, AVInputFormat* fmt, AVDictionary** options)
   at Program.Main(String[] args)

Any help would be appreciated,

Freddie

VB.NET Framework 7, how to multithread on existing user control?

Member 14155949 — Sun, 10 Sep 2023 17:06:00 GMT

I have about 6 user controls, each with its own GUI and code to load data from a MySQL database.

Are there any tutorials or examples on how to use multithreading to load all 6 user controls on a Form when the Form is shown?

Thanks in advance.

vb.net 2022 webview2 getting current url.

steve2015 — Sat, 02 Sep 2023 20:16:00 GMT

I am using visual basic to try and get the webview2 current url but all I get is the first page that I opened with the webview2. I used

dim URL as string = webView21.Source.ToString()

but not returning current page url. I have work on this for 2 days now and no luck. I sure hope some body can answer this or my whole project is toast.

Help! My .NET to MySQL application suddenly stopped working...

erikbrannlund — Fri, 25 Aug 2023 10:07:00 GMT

First some background. 10+ years ago my spouse started a small webshop and I made the administration part in Delphi. Slowly transitioning it to the web. I have tried to make everything as automatic as I can. Like register a payment automatically makes a record in the ledger.
On the same line I later made a C# .NET as a part in the handling of incoming invoices. She scans the invoice to PDF and place it on the desktop or drops it there if it is delivered electronically. My application detects the file and pops up and she can fill in the things needed to put in the ledger and store it in the database.
Now last week the application starts and then closes without being touched for years. It worked last month, the delphi written things still works.
Does anyone have any idea why, this coincide with me reading something about Microsoft removing some old version of TLS. The application uses Entityframework.
Then I tried opening up the source in VS 2017 community edition(?) where it was written but I never get past the "credentials is wrong" page. Moved the code to another computer with VS 2022 on it where I had trouble getting it to work. When I did I got back an exception telling me "opening of table didn't work" but no indication of why.