я имею преобразовать VB6 в C# при выполнении его генерировать эту ошибкуSystem.EntryPointNotFoundException: Не удается найти точку входа
ИЗ VB6
Declare Function OpenCommPort Lib "C:\Program Files\MR705API.dll" Alias "[email protected]@[email protected]" (ByVal PortName As String, ByRef hCom As Long) As Long
Declare Function CloseCommPort Lib "C:\Program Files\MR705API.dll" Alias "[email protected]@[email protected]" (ByVal hCom As Long) As Long
Declare Function SetLED Lib "C:\Program Files\MR705API.dll" Alias "[email protected]@[email protected]" (ByVal hCom As Long, ByVal Led As Byte, ByVal Addr As Byte) As Long
Declare Function ActiveBuzzer Lib "C:\Program Files\MR705API.dll" Alias "[email protected]@[email protected]" (ByVal hCom As Long, ByVal DelayTime As Byte, ByVal Addr As Byte) As Long
Declare Function Iso14443Reqa Lib "C:\Program Files\MR705API.dll" Alias "[email protected]@[email protected]" (ByVal hCom As Long, ByVal ReqAMode As Byte, ByVal ATQ As String, ByVal Addr As Byte) As Long
Declare Function Iso14443Anticoll Lib "C:\Program Files\MR705API.dll" Alias "[email protected]@[email protected]" (ByVal hCom As Long, ByVal AnticollMode As Byte, ByVal Uid As String, ByVal MultiTag As String, ByVal Addr As Byte) As Long
В C#
[DllImport ("MR705API.dll")]
public static extern long OpenCommPort(String portName, ref long hCom);
[DllImport ("MR705API.dll")]
public static extern long CloseCommPort(long hCom);
[DllImport ("MR705API.dll")]
public static extern long SetLED(long hCom, byte Led , byte Addr);
[DllImport ("MR705API.dll")]
public static extern long ActiveBuzzer (long hcom, byte DelayTime, byte Addr);
[DllImport ("MR705API.dll")]
public static extern long Iso14443Reqa (long hcom, byte ReqAMode, string ATQ, byte Addr);
И как я его использую ..
public void doReader() {
Result = OpenCommPort("COM9", ref HANDLE);
....
....
}
Исключение
System.EntryPointNotFoundException: Unable to find an entry point named 'OpenCommPort' in DLL 'MR705API.dll'.
at TrueReader.MainForm.OpenCommPort(String portName, Int64& hCom)
at TrueReader.MainForm.doReader() in c:\Users\sattha\Documents\SharpDevelop Projects\TrueReader\TrueReader\MainForm.cs:line 59
at TrueReader.MainForm.Timer1Tick(Object sender, EventArgs e) in c:\Users\sattha\Documents\SharpDevelop Projects\TrueReader\TrueReader\MainForm.cs:line 54
at System.Windows.Forms.Timer.OnTick(EventArgs e)
at System.Windows.Forms.Timer.TimerNativeWindow.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 System.Windows.Forms.Application.Run(Form mainForm)
at TrueReader.Program.Main(String[] args) in c:\Users\sattha\Documents\SharpDevelop Projects\TrueReader\TrueReader\Program.cs:line 27
Может ли один гид мне, что я сделал не так ?? или что я пропустил.
Я не знаю, как это .dll написал и на каких языках.
но он раньше использовался в VB6.
длинный в VB6 бы приравнять к In32 в .NET, поэтому ваши PInvokes ошибочны. если он не может найти совпадение с неправильным sig, эта ошибка приведет к ошибке – Plutonix
@Plutonix, то есть я должен изменить с long на int32? –
@Plutonix все равно не работает –