Question

I tried to convert a project that relies on the vjs runtime to vs2010, but it errors out when trying to run.

It’s giving the error that “Could not load file or assembly ‘vjslib’ or one of its dependencies. An attempt was made to load a program with an incorrect format.”

I reinstalled the vjs runtime, but it didn’t seem to help.

Is there any way to get get .net 4 to work with this?

Answer 1

Very simple solution – Calling J# code from .NET 4.0

You take control and load it first supplying an explicit path. Then next time it’s needed, it already knows the path (or it’s already loaded in the AppDomain).

You will need to use LoadLibrary function, so import the pinvoke reference:

[DllImport("kernel32", SetLastError = true)]
static extern IntPtr LoadLibrary(string lpFileName);

The on load (either Main function in Console/WinForms or in Global.asax Application_Start):

if (Environment.Version.Major >= 4)
{
    string folder = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.System), @"..\Microsoft.NET\Framework\v2.0.50727");
    folder = Path.GetFullPath(folder);
    LoadLibrary(Path.Combine(folder, "vjsnativ.dll"));
}