Use function from DLL file

Use function from DLL file

• vanu

  I found that "USBm.dll" makes the compiler much happier.

  Thanks,

  Mike

  
  

• WII

  Thank you very much, the information was very helpfull

   

  
  

• Amde

  Would you please post your code.

  Best Regards,

  Rizwan aka RizwanSharp

  
  
  

• Chimme

  Michael_Grumbach wrote:

  Do I just make sure the dll file is in the same directory, or do I put a reference to it in the code somewhere

  Putting Dll in the same directory as of your application is enough and you dont need to do anything.

  Best Regards,

  Rizwan aka RizwanSharp

  
  
  

• syhzaidi

  Yes It must do,You have to specify the complete name/path.

  Best Regards,

  Rizwan aka RizwanSharp

  
  
  

• Wayne.C

  You are welcome :)

  Best Regards,

  Rizwan aka RizwanSharp

  
  
  

• Xancholy

  Hi, use this

  [DllImport("k8062D.dll")]

  private static void StartDevice (void);

  
  
  

• dbaf

  I had the same question. So thanks.

  But I how do I connect the dll to my application

  Maybe I'm using the wrong words.

  Do I just make sure the dll file is in the same directory, or do I put a reference to it in the code somewhere

  Thanks,

  Mike

  
  

• febwave

  Hi again,

  I typed in exactly what you said to, changing the .dll name to USBm, my dll's name, ofcourse.

  And I get the message : The name 'USBm' does not exist in the current context.

  What does this mean. I put a .dll copy in my projects bin folder, and the place where the code is output to.

  Thanks,

  Mike

  
  

• pmak

  Hi again,

  New problem.

  I wrote this (for an output function):

  [DllImport("USBm.dll", EntryPoint = "USBm_WriteA")]

  public static extern void USBm_WriteA(byte deviceindex, byte data);

  and this (for an input function):

  [DllImport("USBm.dll", EntryPoint = "USBm_ReadB")]

  public static extern void USBm_ReadB(byte deviceindex, byte data);

  And this works :

  USBmWrapper.USBm_WriteA(0, Write_Data);

  But this doesn't:

  USBmWrapper.USBm_ReadB(0, Read_Data);

  Error : "AccessViolationException was unhandled" "Attempt to read or write protected memory. This is often an indication that other memory is corrupt."

  Is this just a coding error, or is my computer broken

  Thanks,

  Mike

  
  

• AdrianG

  Copy K8062D.dll in release or bin folder where your program's output is generated then write a class like:

  using System.Runtime.InteropServices;

  namespace SomeNameSpace

  {

  public static class K8062DWrapper

  {

  [DllImport(K8062D.dll)]

  public static extern void StartDevice();

  [DllImport(K8062D.dll)]

  public static extern void StopDevice();

  [DllImport(K8062D.dll)]

  public static extern void SetChannelCount();

  [DllImport(K8062D.dll)]

  public static extern void SetData();

  }

  }

  Now you can call function of above cretaed class like:

  K8062DWrapper.StartDevice();

  etc.

  Make sure to change paramters these functions require and values they return.

  I hope this will help.

  Best Regards,

  Rizwan aka RizwanSharp

  
  
  

• Vlad Shimov

  Great thanks!
  
• Use function from DLL file