Pythonnet in Visual Studio 2017

I am trying to run Visbrain using Pythonnet in Microsoft Visual Studio 2017 Community in a window form, but i faced some problem below.

Environment

1) Pythonnet version : v2.3.0

i downloaded this from "Manage Nuget-Package" in Visual Studio 2017 Community.

2) Python version : Python 3.6.5 (Amaconda 3)

Already pip install pythonnet in the environment.

3) Operating System : Window 7, 64 bit

4) .net framework : 4.0

===

trying to run below code :

private static void button_Click(object sender, EventArgs e)
{
    using (Py.GIL())   
    {
         dynamic myVisbrain = Py.Import("Visbrain"); 
    }
}

when debug

from program.cs

Application.Run(new Form1()); // crashes here

error message :

Exception thrown: 'System.BadImageFormatException' in System.Windows.Forms.dll
An unhandled exception of type 'System.BadImageFormatException' occurred in System.Windows.Forms.dll
Could not load file or assembly 'Python.Runtime, Version=2.3.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. An attempt was made to load a program with an incorrect format.

stack trace :

System.BadImageFormatException
  HResult=0x8007000B
  Message=Could not load file or assembly 'Python.Runtime, Version=2.3.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. An attempt was made to load a program with an incorrect format.
  Source=WindowsFormsAppJTTH
  StackTrace:
   at WindowsFormsAppJTTH.Form1.button1_Click(Object sender, EventArgs e) in C:\Users\Administrator\source\repos\WindowsFormsAppJTTH\WindowsFormsAppJTTH\Form1.cs:line 219
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Button.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at WindowsFormsAppJTTH.Program.Main() in C:\Users\Administrator\source\repos\WindowsFormsAppJTTH\WindowsFormsAppJTTH\Program.cs:line 19

Would like to ask, what is the issue here and how to solve it. Thank You.

Check your references for "Python.Runtime"

It's probably pointing to the 32bit version and you're on a 64bit build

\packages\pythonnet_py27_dotnet.2.3.0\lib\net40\x86\Python.Runtime.dll

Change it to

\packages\pythonnet_py27_dotnet.2.3.0\lib\net40\x64\Python.Runtime.dll

And the app should work.