C - ExecutionEngineException Thrown When Calling Native Code
Oct 17, 2010
I have a function that is exported by a C library with the following signature:
extern "C" BOOL Func()
The function is declared in VB.NET code like this:
<DllImport("mylib.dll", CallingConvention:=CallingConvention.Cdecl)>
Private Shared Function Func() As Boolean
End Function
The problem is that I get an ExecutionEngineException when I call the function from .NET code.
Given that BOOL is typedef'd as int in this C code, should the declaration be different? If so, how should I be declaring this? As Short or Int32? Do I need to marshal the return value?
I just tried to run a project of mine that has a wpf control in it and i get the error:Exception of type 'System.ExecutionEngineException' was thrown.The error automatically closes after about 3 seconds When I create a new WPF project visual studio closes down - no error messages, also just closes with no errors if I create a form application and add a WPF control to it. Also compiled applications just bring up the "xxx has stoped working" error - even apps that are not mine such as Microsoft Pivot that use WPF?
I have a vb6 project in which I use a dll library to do some tasks. For that, I add a module which declares all functions of that library such as:Declare Function myFunction Lib "abcdapi.dll" (ByVal hVar1 As Long, ByVal hVar2 As Long) As Long When I call this function (and many other similar) I'm able to do the work and correct Long pointer is returned. But when I try to do the same thing by VB.net (by importing the same library using dllimport and calling the same function), I get no result. although it does return some pointer but that doesn't produce correct result.
I have done some reading and it seems that this error comes from recursive calls but I have not done anything in my form_closing handler except for call me.close, that's it.
So I don't understand how this exception has entered my project. All of my data and functionality is still working as I expect. It just seems to throw this exception when I try and exit my project.
what I could check to prevent something like this from happening?
In my project, I have a local dataset (XSD) that I am using as local-temporary tables. I am getting a System.InvalidCastException when trying to access the field in one the tables. I believe this is because I my code is (incorrectly) not setting a field's value in a row before trying to access it.My problem is that the exception is breaking in the designer file and not in my code. As a result, I'm having difficulting determining which line of my code reading the field value before it has been set. Is there any way to configure Visual Studio to break in my code instead of in the designer created file?
I want to know how can I compile my native code programs to IL codeto save my**Edit**I mean that visual basic save the code in files such as (form1.vb) so that i want to save this file in(form1.dll)
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I need to write software that will do a lot of math. Mostly it will be matrix multiplication with integers to compute DCT. How much faster should I expect the code to run in native c as compared to VB .Net? Factor of 2, factor of 10, factor of 1000...?
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Public Function ConvertBMP(ByVal BMPFullPath As String, _ ByVal imgFormat As ImageFormat) As Boolean Dim bAns As Boolean Dim sNewFile As String
This may be a debugger issue, but here goes:I have this piece of code:
Private Function Connect() As Boolean Try sessionBegun = False[code].....
My intention is to 'convert' the low level exception into something more meaningful, so I throw an exception of my own creation. I want this to bubble up to a place where I can handle it.However what is happening is my debugger breaks and tells me that an exception of type "QuickBooksConnectionException" was thrown.I know that, I just threw it, why are you catching it? From what I've read, this ought to work, and there doesn't appear to be an analogous Java throws keyword, so perhaps it is my debugger.
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Dim range As Excel.Range xlActualWS.Activate() xlActualWS.PageSetup.PrintArea = "$A$1:$K$68"
I'm developing on asp.net using infragistics controls.I have develop a web page where it uses heavy functionalities of the webdatagrid and it loaded very slowI have tested the page many times but somehow it started to fire this exception An unhandled exception of type 'System. ExecutionEngine Exception' occurred in mscorlib.dll Without displaying any source control.
I tried to experiment with the ability of .NET to support unions using the code below,but it causes a System. ExecutionengineException in .NET 2.0 and FatalExecutionEngineError in .NET 4.0 with the message:
The runtime has encountered a fatal error. The address of the error was at 0x738b3138, on thread 0x1080. The error code is 0xc0000005. This error may be a bug in the CLR or in the unsafe or non-verifiable portions of user code. Common sources of this bug include user marshaling errors for COM-interop or PInvoke, which may corrupt the stack.I agree that this code should not work, but I didn't expect this kind of exception. Is this a .NET bug?
Class POLine Public price As Decimal Public VendorItem As String[code].....
System.ExecutionEngineException was unhandled Message: An unhandled exception of type 'System.ExecutionEngineException' occurred in Unknown Module.There are no further details and the stack trace window is blank I was just wondering how it would be best to work out where this error message is happening - i really don't want to put a million debug.prints in there to work out what functions were last called etc.
Normally, i don't get this error while open form design. But I am ALWAYS get this error, when i worked on my project apx. 30 minutes.
When i get this error, i close my project, and reopen. then this error gone... "view designer" work normally and open my form. I have got 4GM ram,and when i get this error,my used ram is 2.5 gb. I am using VB.net 2008.[code...]
I have a project that has some VB code in it that I'm not allowed to convert to C#. I work in C# and not very good at VB, but I am needing to modify that VB code to use some C# methods I created.
For example:
C#: Code: using MGCIS2.Reporting; using CrystalDecisions.Shared;
[code]....
At this line in the VB code (Dim crv As New Tax.Reports.CrystalReportViewer(_rdbc)) it is giving me an error:Too many arguments to 'Public Sub New()'
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[Code]...
Can I somehow tie or pass the value of the TextBox as the value of the whole control to use in the calling code? EDIT: My actual goal here is to be able to tie the SelectedDate as a parameter of a database query. I was able to select values for the other parameters in a controls dropdown list in a query parameter configuration window.
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