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Error message in Monogame: Unhandled Exception: System.DllNotFoundException: SDL2.dll


Error message in Monogame: Unhandled Exception: System.DllNotFoundException: SDL2.dll

By : LuisAzc
Date : November 22 2020, 10:54 AM
With these it helps I don't think it's a duplicate because if you look closely at the error messages, they're different. The Tao.Sdl.dll.config file is present in the /bin/Debug folder. As suggested in http://www.mono-project.com/docs/advanced/pinvoke/dllnotfoundexception/ I typed MONO_LOG_LEVEL=debug mono /home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MovingTeddyBears.exe
and I got
code :
Mono: Assembly Loader probing location: '/usr/lib/mono/4.5/mscorlib.dll'.
Mono: Image addref mscorlib[0x1620550] -> /usr/lib/mono/4.5/mscorlib.dll[0x161fad0]: 2
Mono: AOT module '/usr/lib/mono/4.5/mscorlib.dll.so' not found: /usr/lib/mono/4.5/mscorlib.dll.so: cannot open shared object file: No such file or directory

Mono: Assembly Loader loaded assembly from location: '/usr/lib/mono/4.5/mscorlib.dll'.
Mono: Config attempting to parse: '/usr/lib/mono/4.5/mscorlib.dll.config'.
Mono: Config attempting to parse: '/etc/mono/assemblies/mscorlib/mscorlib.config'.
Mono: GC_MAJOR: (mature allocation failure) pause 0.58ms, total 0.58ms, bridge 0.00ms major 384K/128K los 0K/0K
Mono: Assembly mscorlib[0x1620550] added to domain MovingTeddyBears.exe, ref_count=1
Mono: Config attempting to parse: '/etc/mono/config'.
Mono: Config attempting to parse: '/home/stefan/.mono/config'.
Mono: Assembly Loader probing location: '/home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MovingTeddyBears.exe'.
Mono: Image addref MovingTeddyBears[0x1689590] -> /home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MovingTeddyBears.exe[0x161e6c0]: 3
Mono: Assembly MovingTeddyBears[0x1689590] added to domain MovingTeddyBears.exe, ref_count=1
Mono: AOT module '/home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MovingTeddyBears.exe.so' not found: /home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MovingTeddyBears.exe.so: cannot open shared object file: No such file or directory

Mono: Assembly Loader loaded assembly from location: '/home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MovingTeddyBears.exe'.
Mono: Config attempting to parse: '/home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MovingTeddyBears.exe.config'.
Mono: Config attempting to parse: '/etc/mono/assemblies/MovingTeddyBears/MovingTeddyBears.config'.
Mono: Assembly Loader probing location: '/home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MovingTeddyBears.exe'.
Mono: AOT module '/home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MovingTeddyBears.exe.so' not found: /home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MovingTeddyBears.exe.so: cannot open shared object file: No such file or directory

Mono: Assembly Ref addref MovingTeddyBears[0x1689590] -> mscorlib[0x1620550]: 2
Mono: Assembly Loader probing location: '/home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MonoGame.Framework.dll'.
Mono: Image addref MonoGame.Framework[0x168e8f0] -> /home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MonoGame.Framework.dll[0x168da10]: 2
Mono: Assembly MonoGame.Framework[0x168e8f0] added to domain MovingTeddyBears.exe, ref_count=1
Mono: AOT module '/home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MonoGame.Framework.dll.so' not found: /home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MonoGame.Framework.dll.so: cannot open shared object file: No such file or directory

Mono: Assembly Loader loaded assembly from location: '/home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MonoGame.Framework.dll'.
Mono: Config attempting to parse: '/home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MonoGame.Framework.dll.config'.
Mono: Config attempting to parse: '/etc/mono/assemblies/MonoGame.Framework/MonoGame.Framework.config'.
Mono: Assembly Ref addref MovingTeddyBears[0x1689590] -> MonoGame.Framework[0x168e8f0]: 2
Mono: Assembly Ref addref MonoGame.Framework[0x168e8f0] -> mscorlib[0x1620550]: 3
Mono: Config attempting to parse: '/home/stefan/Downloads/LinuxMonoGameMovingTeddyBears/bin/Debug/MovingTeddyBears.exe.config'.
Mono: Assembly Loader probing location: '/usr/lib/mono/gac/System/4.0.0.0__b77a5c561934e089/System.dll'.
Mono: Image addref System[0x169ea60] -> /usr/lib/mono/gac/System/4.0.0.0__b77a5c561934e089/System.dll[0x169db20]: 2
Mono: Assembly System[0x169ea60] added to domain MovingTeddyBears.exe, ref_count=1
Mono: AOT module '/usr/lib/mono/gac/System/4.0.0.0__b77a5c561934e089/System.dll.so' not found: /usr/lib/mono/gac/System/4.0.0.0__b77a5c561934e089/System.dll.so: cannot open shared object file: No such file or directory


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Unity integration for Oculus error: DllNotFoundException: Exception of type 'System.DllNotFoundException' was thrown

Unity integration for Oculus error: DllNotFoundException: Exception of type 'System.DllNotFoundException' was thrown


By : user3156831
Date : March 29 2020, 07:55 AM
I wish this help you Well as the error message states, you are missing a dll. Which suggest to me that you did not correctly import the package.
When you import the OculusUnityIntegration.unitypackage into your Unity project you should end up with some files in the Assets/Plugins folder, one of which is the OculusPlugin.dll. Which in this case seems to be the one you are missing
error message:An unhandled exception of type 'System.FormatException' occurred in mscorlib.dll in c#

error message:An unhandled exception of type 'System.FormatException' occurred in mscorlib.dll in c#


By : Akshay Jain
Date : March 29 2020, 07:55 AM
it fixes the issue You are getting an exception when Convert.ToDouble receives a string that is not a valid number. (Even a blank string is invalid to this method).
To convert a text input to a numeric value, without getting exceptions when the input is not a valid number, you should use the TryParse method appropriate for your datatype.
code :
decimal[] itemtotal = new decimal[12];

// If the conversion succeed the itemtotal[0] contains the converted value
// otherwise it contains the default value for a decimal (0)
decimal.TryParse(txtspringroll.Text, out itemtotal[0]);
itemtotal[0] *= Price_springroll;

// and so on for the other elements of the array

txtTotal.Text = itemtotal.Sum().ToString();
'An unhandled exception of type 'System.InvalidCastException' occurred in Microsoft.VisualBasic.dll' error message?

'An unhandled exception of type 'System.InvalidCastException' occurred in Microsoft.VisualBasic.dll' error message?


By : The Wilson Concept
Date : March 29 2020, 07:55 AM
like below fixes the issue You have a lot of unnecessary CType casting going on. Textbox.Text is already of type string. You don't want to cast Score to an Integer, because you are concatenating to a string. Also, get used to the String.Format function, as it'll help code readability and will help you find your mis-named DB column name. Don't be afraid of white space for readability:
Monogame Pipeline Error on Mac: System.DllNotFoundException: libfreeimage.dylib

Monogame Pipeline Error on Mac: System.DllNotFoundException: libfreeimage.dylib


By : IndyThinker
Date : March 29 2020, 07:55 AM
To fix the issue you can do You can install the library using Brew
An unhandled exception occured an unhandled exception of type 'system.invalidoperationexception' occurred in system.data

An unhandled exception occured an unhandled exception of type 'system.invalidoperationexception' occurred in system.data


By : Blas Rascon
Date : March 29 2020, 07:55 AM
it should still fix some issue Open your sqlconnection like this and associate it with the sqlcommand. See the code changes below highlighted in comments.
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