System.TypeLoadException: Could not load type 'System.Windows.Forms.AnchorStyles' from assembly 'FastReport.Compat, Version=2022.2.0.0, Culture=neutral, PublicKeyToken=406e1f4c3c8ef97e'.

[DemonJtan]

The latest version Release2022.2.12,when I use the following code "Report report = new Report();" in my .NET 5.0 Project，there throws a exception

[MaratAlaev]

Hello!

The problem does not reproduce Could you please describe the playback in more detail

Best regards Marat

[StephaneDelhautal]

Hi,

same error for me. i have create a a report with fastreport designer and save it as vb class file. in visual studio, i have a sample projet, put the report vb class in the projet directory , this file contains the class definition FicheSuiviAssemblage in my main form, i have added a button with this code: Dim MyReport As New FicheSuiviAssemblage complition is fine. and when i run the projet and click on my button, the error is triggered on this instruction

[MaratAlaev]

Hello!

I cannot reproduce this error Can you provide a test project on which it can be reproduced?

Best regards Marat

[valentinistrate]

The error can be reproduced by using the attached project:

ExampleWPFWithFastReports.zip

[jeremyc87]

I have the exact same problem here. I am using .NET 6.0 in WPF.

The error also occur if I use report.FromFile().

I have used FastReport Community to create the report. I have check the options of the report and I have discovered that : The reference to the System.Windows.Forms.dll, look suspicious to me as we are in WPF there should not be any reference to WinForm dll...

I hope my information can help.

[jeremyc87]

Hello again,

Because of this issue I am not able to test this product properly and I must make a decision quickly.

Is somebody working on it? Did you have any idea how to fix it and when can we expect a working version?

I know it's a free version and as such the support is not as quick and as "performing" but I really like the idea of this product and I would be sad to discard it because a little bug like that make me unable to properly test it.

Thanks anyway and good luck with this. Best regards!

[jonmpoole80]

Just ran into this myself and this topic was the first result when googling it. I am also having the issue in Report.ReadFromFile().

Edit: I went back to 2022.1.14 version of FastReport.Core and it seems to be working there.

System.TypeInitializationException
  HResult=0x80131534
  Message=The type initializer for 'FastReport.Report' threw an exception.
  Source=FastReport
  StackTrace:
   at FastReport.Report.FromFile(String fileName)
   at FulcrumDatabaseUpdater.frmStockReports.btnUpdate_Click(Object sender, EventArgs e) in C:\Users\jpoole.CREATIVEINFO\source\repos\Valsoft-Industrial-Division\FulcrumDatabaseUpdater\FulcrumDatabaseUpdater\frmStockReports.cs:line 98
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Button.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, WM msg, IntPtr wparam, IntPtr lparam)

  This exception was originally thrown at this call stack:
    [External Code]

Inner Exception 1:
TypeLoadException: Could not load type 'System.Windows.Forms.AnchorStyles' from assembly 'FastReport.Compat, Version=2022.2.0.0, Culture=neutral, PublicKeyToken=406e1f4c3c8ef97e'.

[blackflys]

I also have this problem, is it possible that the FastReport.Compat is referenced by multiple projects inside and not all have the same version?

EDIT; I reverted to version 2022.2.11 for it to work. all versions above were giving the same error.

Could not load type 'System.Windows.Forms.AnchorStyles' from assembly 'FastReport.Compat, Version=2022.2.0.0, Culture=neutral, PublicKeyToken=406e1f4c3c8ef97e'. at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module) at System.Reflection.Assembly.GetTypes() at Plateforme.Core.StartupBase.<>c.<.ctor>b__4_1(Assembly x) at System.Linq.Enumerable.SelectManySingleSelectorIterator2.MoveNext() at System.Linq.Enumerable.WhereSelectEnumerableIterator2.ToArray() at System.Linq.Buffer1..ctor(IEnumerable1 source) at System.Linq.OrderedEnumerable1.ToList() at System.Linq.Enumerable.ToList[TSource](IEnumerable1 source) at Plateforme.Core.StartupBase.<>c.<.ctor>b__4_0() at System.Lazy1.ViaFactory(LazyThreadSafetyMode mode) at System.Lazy1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor) at System.Lazy1.CreateValue() at System.Lazy1.get_Value() at Something.Core.StartupBase.get_ModuleInitializers() at Something.Core.StartupBase.ConfigureServices(IServiceCollection services) at Something.Core.StartupConsoleBase.ConfigureServices(IServiceCollection services) at Something.Core.Extensions.HostBuilderExtensions.UseStartup[TStartup](IHostBuilder hostBuilder)

[allen3371]

same to me

[sayoojsushand]

Same issue for me using .NET 6. Temporary fix was to use FastReport.OpenSource NuGet package version 2022.1.14 For beginners: In VS go to NuGet Package Manager, search or select FastReport.OpenSource and select the version 2022.1.14 then click on Update or Install.

[KirillKornienko]

This bug was fixed in 2022.2.17. Please, update and try it.

[moelang]

I reproduced this problem in 2022.2.14/17/18, and not reproduced in 2022.1.14

This bug was fixed in 2022.2.17. Please, update and try it.

[Kalina9001]

Same Error! Any changes?

[ck-sbrown]

I am also receiving the same error on 2022.3.0 with .net 6

[AlekseyKrutko]

Any workarounds? It is still reproducible

[AlekseyKrutko]

If anyone iterested. For me the reason was that Report usage is in a dynamicaly loaded assembly and in the way how dependencies are resolved. Using AssemblyLoadContext + AssemblyDependencyResolver fixed the problem. AssemblyDependencyResolver is not accessible for net framework. Here is a project that implements two ways. The first one reproduces the problem. WpfWithFastReportFailing.zip

[duduccosta]

I'm facing this error:

Could not load type 'System.Windows.Forms.AnchorStyles' from assembly 'FastReport.Compat, Version=2024.1.10.0, Culture=neutral, PublicKeyToken=5ceb240df42bf6e8'.

Using .NET7

[LordRUSS]

I'm facing this error:

TypeLoadException: Could not load type 'System.Windows.Forms.AnchorStyles' from assembly 'FastReport.Compat, Version=2024.1.10.0, Culture=neutral, PublicKeyToken=5ceb240df42bf6e8'.

Using .NET8

[Elbunda7]

This issue should not be closed, because the exception System.TypeLoadException is still throwing in version 2024.1.10 when "Report report = new Report();" is called.

Current workaround is to use a few year old version 2022.1.14 of FastReport.Opensource and 2021.3.1 version of FastReport.Compat

[duduccosta]

This error happens on PRO version too..

[BogdanStegachev]

Hello!

Reproduced this issue, created a task and passed it to the development department, expect changes soon

Best regards, Bogdan

[wagenheimer]

Is there a workaround for the most recents PRO Version?

[AlekseyKrutko]

Is there a workaround for the most recents PRO Version?

Try to ensure that \bin\Debug\net6.0-windows\runtimes\any\lib\netcoreapp3.0\FastReport.Compat.dll is loaded. I just copy it into project output root

[BogdanStegachev]

Hello!

Our developers managed to solve the problem according to your request, expect changes in the next version of FastReport OpenSource

Best regards, Bogdan