roozbehid / wasmwinforms Goto Github PK

C# Winforms for Webassembly

License: MIT License

C# 57.33% PowerShell 0.34% C 37.00% C++ 3.74% Objective-C 0.26% JavaScript 1.33% Batchfile 0.01%

csharp winforms webassembly nuget msbuild-task cairo-drawing sdl fontconfig gdiplus pixmap

wasmwinforms's Introduction

WasmWinforms

C# Winforms can now work in your browser! Wasm.Winforms is a nuget package that you can install and use your codes unchanged and run it on your browser!

Try it online

https://webassembly.z19.web.core.windows.net/ some random controls doing nothing!
https://webassembly.z19.web.core.windows.net/Calculator/ demo compiled unchanged from here

How to use

Create a Winforms application from Visual Studio. (Note: Winforms are full .Net applications)
Create an empty .Net Core App from Visual Studio. Add all files from full .net application directory into it. (For example, add Form1.cs,Form1.Designer.cs, Form1.resx, Program.cs .You can add those files as links too.)
Install latest version of Winforms.Wasm nuget from nuget.org.
Build your project.
You can debug Win32 (32bit version) of your code in Visual Studio. (Make sure you have 32bit version of dotnet installed! (it should be in Program Files (x86)\dotnet\dotnet.exe)
Looking at your OUTPUT DIRECTORY\dist\ you will find your index.html to run!

How it works

This project uses mono to run your C# IL code. Also coming with this distribution are System.Drawing and System.Windows.Forms dlls. Winforms implementation requires many C libraries that I was also ported into WebAssembly. You can find out about them looking into their submodules!

How to compile/build

This project uses another amazing ( :D ) project of mine: GCCBuild which enables you to use any compiler to compile Visual Studio C/C++ projects in any OS. Meaning you can have Visual Studio C/C++ project files and use them to compile both for Windows/Linux and also WebAssembly. You need to have Emscripten installed, activated and already accessible from your path. First from Visual Studio build switch to Release-x86 then build solution, then do the same for WasmRel-x86. This way you have all libraries compiled for Win32 and also WebAssembly. Then in your \Output\bin\x86\Release folder you can issue a nuget pack and use that nuget.

When you build an application using this nuget, look for dist folder which contains your index.html. Using Win32 compiled libraries are way easier to debug and run your application.

Please note that compiling mono-wasm project should only be done in WasmRel or WasmDbg targets and it would take a minute or two to complete!

Why is it so slow/buggy?

You need to download good amount of files to run it. All dlls and big .wasm and .js files have to be downloaded. File issues and submit pull request so it will be faster/less buggy! There are many many bugs and this project/product is not at all recommended for production. It is pre-alpha phase!

We have many better UI frameworks for browsers and web, why use Winforms?!

Well that is a really good question that you have to answer! For me it was a fun project. But many companies are still using old programs and they would like to use them as-is in a browser, so it would open tons of new oppurtunities for those programs!

Things to do - You can pick one and contribute!

Update mono Winforms to latest version
Update mono version being used. Mono is rapidly changing/improving their WebAssembly technology....
Use AOT mono
Find bugs in libgdiplus that causes memory leaks
Improvements to amazing Microwindows project and make it in-sync

wasmwinforms's People

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wasmwinforms's Issues

Bad charachters in forms will lead to hung

Probably due to not finding their charachter to determine width, etc...

Update README

README says the following: "Maybe call it some useless technology..."

This is definitely not true. Lots of businesses run on old winforms code, which, if converted to web app could be a real benefit.

I know enterprise companies trying to do such transformations.

Keyboard input kills calculator demo

Using chrome

~RunWrapper caused an exception:System.ArgumentException: Illegal characters in path.

Any suggestion to fix this error when compiling to WasmRel?

Unhandled Mono AssemblyResolutionException

Hi there,

I am attempting to build my application and getting the following error with the complete app not being outputted into the dist folder:

Unhandled Exception: Mono.Cecil.AssemblyResolutionException: Failed to resolve assembly: 'System.Windows.Forms, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'
   at Mono.Cecil.BaseAssemblyResolver.Resolve(AssemblyNameReference name, ReaderParameters parameters)
   at Driver.Import(String ra, AssemblyKind kind)
   at Driver.Run(String[] args)
   at Driver.Main(String[] args)
	WasmForm	C:\Users\myuser\.nuget\packages\winforms.wasm\1.0.19137.60\build\netstandard2.0\Winforms.Wasm.targets	13

This is using version 1.0.19137.60 and .NET Core 2.1. If there is any additional information I can provide please let me know.

System.Drawing.New

Severity Code Description Project File Line Suppression State
Error
Unhandled Exception: Mono.Cecil.AssemblyResolutionException: Failed to resolve assembly: 'System.Drawing.New, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'
at Mono.Cecil.BaseAssemblyResolver.Resolve(AssemblyNameReference name, ReaderParameters parameters)
at Driver.Import(String ra, AssemblyKind kind)
at Driver.Run(String[] args)
at Driver.Main(String[] args)
ConsoleApp2 C:\Users\hp.nuget\packages\winforms.wasm\1.0.0.33\build\netstandard2.0\Winforms.Wasm.targets 13

Rendering Issue After Using ComboBox or Tab

When using the ComboBox or Tab the UI will render like below:

I use Chrome as the browser.

I want to run cefsharp on this

:D. https://github.com/cefsharp/CefSharp

Uses cefsharp to run another browser in another browser.

"What browser are you in? I DON'T KNOW!? IE but Chromium? AAAHHHHH

System.Drawing.Color giving errors

  at :8080/DiscordUploader.CloudForm..ctor () <0x3437bb8 + 0x00044> in <f57a8ae81ee64592a2f8ca3f7c7c3964>:0 
  at :8080/DiscordUploader.Program.Main () <0x2eab640 + 0x0000a> in <f57a8ae81ee64592a2f8ca3f7c7c3964>:0 
    at Object.call_method (mono.js:1)
    at Object.call_static_method (mono.js:1)
    at Object.init ((index):22)
    at runtime.js:11
    at mono.js:1```

I tried #4 and it didn't fix it.

[Troll] : Cannot Divide by zero

Ok this is not a real issue but it seems that unhandled exception seems to freeze the app.
I'm sorry for the troll.

That beeing said ... that's amazing !
Thx a lot for that initiative ;)

About runnning OCX

Hello, I will be doing some tests but want to know if you already tried using a OCX with it?
Example: How about use a Flash OCX to emulate flash support as an ActiveX component? I do have some client systems that will not be updated until next year, so Flash EOL is making this solution interesting.

dl_mapping_symbol - proc name GdipNewPrivateFontCollection not matched

libgdiplus has the function "GdipNewPrivateFontCollection".
So if I'm not mistaken the mapping in mono-wasm is missing.
So all that needs to be done is to add the mapping
to "libgdi_library_mappings" in "driver.c"?

Calculator demo does not work on Firefox

Using Firefox on Windows 10, the calculator demo does not work and logs this error to the console:-

RangeError: bad Memory initial size mono.js:1181:26
<anonymous> https://webassembly.z19.web.core.windows.net/Calculator/mono.js:1181:26

Getting error while Installing via Nuget Package Manager Visual Studio 2019

Dotnet: Visual Studio 2019 (c#)
OS: Windows 10

Error Failed to add reference to 'bz2'.
Please make sure that the file is accessible, and that it is a valid assembly or COM component.