Could not load screen which has chromiumwebbrowser in WPF net core project

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I have a WPF Project, in MainWindow.xaml there are 1 grid which contain button, 1 cefsharp ChromiumWebBrowser. When loading window Grid is Visible and ChromiumWebBrowser is Hidden. If I click the button, Grid is Hidden and ChromiumWebBrowser is Visible and ChromiumWebBrowser must open 1 html page.

My project is working perfectly in visual studio. After that I build to .msi file and install it. When run exe file, app open normally but when I click button it will be crash and close immediately. I open file debug.log and see the error

WARNING:alloy_constrained_window_views_client.cc(63) No likely focused browser

So anyone can help me to solve this issue? I really appreciate any idea from every one.
Noted: I use VS2022 64 bit and msi file is also x64bit version

What I have tried:

I open event viewer and see another error

Faulting module name: libcef.dll, version: 108.4.13.0, time stamp: 0x63976dec

Posted 28-Dec-22 22:52pm

huynhminh97

Updated 2-Jan-23 23:21pm

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[no name] 29-Dec-22 10:25am

Put a try catch block around the "click" code and look at the exception in depth. (and you can't "hide" a grid and still have the "contents" visible; it's not logical).

huynhminh97 29-Dec-22 22:43pm

Hi @Gerry Schmitz, thanks for your comment. I add try catch for click event and also write log before each code line, but program is run entirely code line without error so catch block is not called. Is it because I "hide" the grid as you said that cause this problem?
What I want now: Open MainWindow in WPF app and click button => display a web page in this window (not open more window) => working with web and send data to WPF => when receive data in WPF side, I want to turn off web page and display MainWindow again. How I can do this?

[no name] 30-Dec-22 1:57am

Use something more people are familiar with; then you'll get more answers; and still accomplish the same thing.

https://learn.microsoft.com/en-us/dotnet/api/system.windows.controls.webbrowser?view=windowsdesktop-7.0

Vivek_Dutta 29-Dec-22 13:07pm

I think Gerry has a point. But I would also like to add please check if you have .Net 6 runtime installed.

huynhminh97 29-Dec-22 22:46pm

@Vivek_Dutta, thank you so much. I checked and .Net6 runtime was installed. Do you have another idea about this issue?

Vivek_Dutta 30-Dec-22 12:40pm

Looking by your shared error messages, I found https://bitbucket.org/chromiumembedded/cef/issues/3195/application-crash-related-to-libcefdll. This looks like the problem was resolved and it was related to the versions. Please keep us posted on your finding to solve the issue.

huynhminh97 3-Jan-23 5:10am

Hi @Vivek_Dutta, I solved this issue. It's a bug of CEF ver 108, now I'm setting CefSettings.CachePath in App.xaml.cs file to make app run. However for CEF ver 107, the app will working without setting CachePath
You can see this link https://github.com/cefsharp/CefSharp/discussions/4352 to get more information
Finally, tks you so much

Vivek_Dutta 3-Jan-23 8:54am

Thank you sharing the update and glad to hear you found the solution.

2 solutions

Solution 1

It sounds like you are missing a DLL.

Have you compared the DLLs in the Debug and release folders?

When you install, have you compared the install folder DLLs to the other two?

Can you see any differences? You may have to manually include them in your release package. Don't just rely on the package manager.

Posted 29-Dec-22 18:03pm

Graeme_Grant

Comments

huynhminh97 2-Jan-23 23:03pm

Hi @Graeme_Grant, I compare and checked but my installation folder contained all required dependencies as link https://github.com/cefsharp/CefSharp/blob/master/NuGet/PackageReference/Readme.txt#L25 so I think this error is not missing file

Graeme_Grant 3-Jan-23 1:21am

It's not what I think that matters, it is what the error message is telling you that matters. I am only giving you my thoughts on what it could be. If it works in dev but not on install, then you are using different dll versions or one is missing. I have given you how I would go through the process of elimination to identify what the issue is.

huynhminh97 3-Jan-23 1:25am

@Graeme_Grant Tks you so much. I'm trying to solve it and will tell you once I find the solution

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

huynhminh97 · Accepted Answer · 2023-01-02T23:21:00

Solution 2

I found the reason that cause this issue. See link Could not load file or assembly CefSharp to get detail information

Posted 2-Jan-23 23:21pm

huynhminh97

Could not load screen which has chromiumwebbrowser in WPF net core project

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Could not load screen which has chromiumwebbrowser in WPF net core project

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