Why do I receive unhandled exception of type 'System.Ty​peInitiali​zationExce​ption' when using .Net Assembly in C# code?

I am following an example given on MathWorks documentation page-

https://www.mathworks.com/help/compiler_sdk/gs/create-a-dotnet-application-with-matlab-code.html

to create a .NET assembly. However, when I compile my C# code, it throws the exception:

An unhandled exception of type 'System.TypeInitializationException' occurred in MainApp.exe.

Specifically, the inner exception looks like the following:

{System.TypeInitializationException: The type initializer for 'MathWorks.MATLAB.NET.Utility.MWMCR' threw an exception. ---> System.TypeInitializationException: The type initializer for 'MathWorks.MATLAB.NET.Arrays.MWArray' threw an exception. ---> System.BadImageFormatException: An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)
   at MathWorks.MATLAB.NET.Arrays.MWArray.mclmcrInitialize2(Int32 primaryMode)
   at MathWorks.MATLAB.NET.Arrays.MWArray..cctor()
   --- End of inner exception stack trace ---
   at MathWorks.MATLAB.NET.Utility.MWMCR..cctor()
   --- End of inner exception stack trace ---
   at makesquare.MLTestClass..cctor()}

How can I resolve this?

Answer 1

[MathWorks Support Team]

The Visual Studio has to be of 64-bit to run a 64-bit DLL. By default Visual Studio is a 32-bit application and while installing it you can check the option for 'x64'. 

To fix the issue, go to Visual Studio

Configuration Manager

, change the platform from 

Any CPU

 to 

x64

.