I have 2 source codes in fortrran (I have not written them). I visualized these codes by linking them to VB2005.when I excuate the VB.exe, when VB calls one of these DLLs, there is no problem, but in calling the other DLL, the DLL is executed but the VB.exe is closed and the interface page to the user goes out.
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How do I revert a form including the controls back to a original state without closing the app? For example I got a picture box and 2 buttons in a form..
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I was wondering if there was a way to write fortran or to integrate fortran to Visual Basic .net 2010..Maybe with adding a refferance or something? what options are available?
View 5 RepliesForm1 is a mdi container. It has a bunch of forms that can load inside of it as mdi children. If I close each open form inside the form1, and then click the red X at the top right, application exits fine.If I click the red X without closing the forms inside I get: An unhandled exception of type 'System.CannotUnloadAppDomainException' occurred in mscorlib.dll
Additional information: Error while unloading appdomain. (Exception from HRESULT: 0x80131015) However I can break from it. How do I get the application to not show that error? What must I do to fix those inside forms or close when the red x is clicked?
Dim frm As Form
For Each frm In Forms
Set frm = Nothing
Next frm
The above code is what I used in VB6 to close all forms associated with my programs before my program closed. I have been searching for information on how to make sure all forms are closed when closing a VB2008 program.
I have seen info on using the Project Property Shutdown mode When startup form closes and I currently have this set.
Is this all that is really necessary? Will the garbage disposal close everything else to free up RAM?
Also, if I have several forms open and want to close all from the main form without closing each one individually, what is the best approach? Is there a collection like in VB6, go through the collection, compare it to the name of the main form and close it if it is not the main form?
I have several subroutines which are written in FORTRAN.
1) how I need to compile the FORTRAN subroutines?
2) what I need to do within VB 2005 to call these FORTRAN subroutines within the VB 2005 code?
I have the following code to close a form which is a child. The problem is that when it closes, it closes the MDI parent too.
Private Sub frmTransaction_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
If ListView1.Items.Count >= 1 Then
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I am running one fortran exe in .net application(calling from command line with the help of system diagnostic process). If we directly click on fortran exe, it shows inputs to enter for fortran in command window, after input entered it gets executed. We want same behaviour but want to run fortran exe from .net application, If we click on button in vb.net form, this exe should get called and should show inputs to enter on the command line, once inputs entered it should execute. How to achieve this with .net application? Right now, after clicking on button in vb.net form, exe get's opened in command window, but it is blank, and gets hanged. [code]
View 1 Replieshave problem with calling a Fortran DLL from VB.net Program. The VB program provide the GUI while the Fortran DLL does the calculations.The Fortran DLL opens and reads from data files supplied by the VB program. however, DLL program displays a message that says it can not open the file.
View 1 RepliesI have a DLL written in fortran that I know works because I am getting it from a working software package that we use daily. I am trying to call it from anything but am having problems i believe with passing the correctly formatted arguments in and out of it, so i decided to try and access it from a VB program. I chose VB because I have contacted the developer of the software package we are using and he gave me his DLL function call in VB6, even though he is not allowed to show me the FORTRAN source.
Problem is (perhaps, i think) that I am writing in VB.NET, which has different data types than VB6. Can anyone see why i am am having problems. The error i get upon running is: "AccessViolationException was unhandled: Attempted to read or write protected memory. This is often an indication that other memory is corrupt."
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I am running one fortran exe in .net application(calling from command line with the help of system diagnostic process).If we directly click on fortran exe, it shows inputs to enter for fortran in command window, after input entered it gets executed.We want same behaviour but want to run fortran exe from .net application,If we click on button in vb.net form, this exe should get called and should show inputs to enter on the command line, once inputs entered it should execute. How to achieve this with .net application?
Right now, after clicking on button in vb.net form, exe get's opened in command window, but it is blank, and gets hanged.Below is the error forrtl: error (200): program aborting due to window-CLOSE event Image PC Routine Line[code]....
I have a subroutine that was written in fortran that I need to call from VB.NET where all of my other functions are written. I did not write the fortran, and hardly know fortran. I am getting the below exception on my dll function call and don't know how to fix it. I wonder if it is due to incongruent variable lengths? I have the source for my fortran and compiled it using the g95 compiler. I have tried compiling it with a flag on which is supposed to force all of the reals to 32 bits (-r4). It weirds me out that you don't seem to be required to initialize variables before use in fortran. I thought it was supposed to be a ridged language.
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I am trying to call a fortran DLL from VB.NET. Fortran function requires two character strings to be passed from VB to fortran. I am able to run the code with a change after receiveing a AccessViolationException error. I dont understand why it worked can
some one whose professional explain me the difference. Here I am attaching the codes for reference
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I am calling a Fortran dll from vb.net. It works when I call it it one time only. When I put that in a loop, it works for the first time and second time it quits the program. How can I run this in a loop?
View 4 RepliesI can pass integers, singles, doubles, and arrays of all these back and forth with no problem. But I can't figure out how to pass a string in Visual Basic 2010 to a character variable in the Fortran DLL. I keep getting the PInvokeStackImbalance error. I could just convert the Visual Basic string to an integer array containing the ASCII code for each character, send that, and convert back inside the DLL, but that's pathetic. There must be a simple way to do this.
I first tried using Dim txt(50) as Char in VB2010, and character*50 txt in the DVF F90 DLL but that didn't work.
Then I tried Dim txt as String in Visual Basic 2010 and made the string 50 characters long (also tried 49) but this didn't work.
I could pass a User Defined Type data structure to a Fortran DLL, that contained Short Integers, Singles (real variables) and a series of Fixed Arrays, both short integers and real variables.I am upgrading my VB6 app to Visual Studio 2008 - VB, and I want to keep the same data structures as they are used in about 300,000 lines of code.I modified the Data Structure as follows below, making sure it is of Explicit Layout, since I want the position of all variables to be the same both in VS 2008 and Fortran.Two problems arise:
1) if the LayoutKind is Explicit, such as in the example below (only part of the data structue is shown, where "..." indicate part of omitted data structure members), whenever I try to run my app, I get the following exception message, which indicates that the VBFixedArray declared at Offset 154 is in conflict with some other object, unnamed by the exception handler.
Message="Could not load type 'MyApp.SomeStruct' from assembly 'MyApp, Version=1.32.3906.33480, Culture=neutral, PublicKeyToken=null' because it contains an object field at offset 154 that is incorrectly aligned or overlapped by a non-object field."
Source="MyApp"
TypeName="MyApp.SomeStruct"
StackTrace:[code]....
2) if the LayoutKind is Sequential, the app will start, all the data preceding the VBFixedArrays is passed to the Fortran Dll without problem; everything that follows the VBFixedArray is garbled and unusable. To check this, I have made a Fortran subroutine in the Dll to which I pass both the Data Structure and a vector; in the Fortran subroutine, all the elements of the data structure are equivalenced to individual positions in the vector; upon return from the Fortran subroutine, I compare the elements of the data structure and those of the vector.
The problem here is that the Data Structure contains some 1300 names, and is used extensively in the application, as it is the way to pass elegantly a lot of data pertaining to a mathematical model with only one adress when accessing the Fortran Dll, in which the computing engine lies.
<StructLayout
<StructLayout(LayoutKind.Explicit, Size := 9226, CharSet := CharSet.Ansi)>
Public Structure SomeStruct[code]......
My challenge is to prepare for a presentation using a GUI interface to access a program written in Fortran.The Fortran program reads a data file and then writes an output file.For the presentation I need to be able to change a variable value in a VB form, update the data file, and run the Fortran program from the VB form.I also need to be able to create graphs using VB forms using the output file generated by the Fortran program.
View 2 RepliesI have LaPack numerical package , I want to compile with Visual Fortran (INTEL) using vs2008.I want to use the routines from a VB.NET program.How can I call the routines from VB ?
View 9 RepliesI have a button on a form that is supposed to run an executable (compiled Intel Fortran v11) on the click event. Here is the code:
Private Sub RunButton_Click() Handles RunButton.Click
Try
System.Diagnostics.Process.Start("C: estDir estCode.exe")
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I'm certain the path is correct and I have verified that running the testCode.exe from the cmd window works as it should (testCode.out file is updated). When I try to run the process via the RunButton it appears to work...no errors are reported or caught. However, the expected output file is not updated indicating testCode.exe did not execute. All of the online support I have researched indicates this should work.
I'm currently working on being able to import a DLL written in Fortran into Visual Basic. I've got all the basics down, so now I'm trying to take it a step further. The title basically says it all, but I'll explain what it is I'm trying to do anyways.
For kicks and giggles, let's just assume I want to pass an object that has three double values in it, possibly representing a point in space in three dimensions. In my Fortran method, I want to take that object, print out the x value, then change the x value to 7.5. Here's my Fortran code that does just that.[code]...
I really need help with this. I am trying to call a fortran DLL from VB.NET program. The program works fine untill it reaches the end of the DLL program where, instead of transferring the control back to the calling program the message " PinvokeStackImbalance error" is displayed and program halts. If I turn off pInvokeStackImbalance from the Debug menu, then the program will compile without problem. However, the .EXE program crash after the DLL call. Does anybody where the problem is. following the VB.Net program that calls the fortran DLL:
Private
Declare Sub
WIDTH_SUB Lib
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I have an old Fortran program that I've compiled to a windows executable. On opening this from an explorer window the executable runs fine, however on using Shell to run the program a traceback error occurs. Just to be sure I used Shell to open a batch file which runs cmd /K ...exe Why is it that on double-clicking the batch file it will run the executable correctly, however on calling it from my visual basic (very simple button) program the batch file opens the command prompt just fine but does not execute the whole Fortran code successfully? Incidentally I have found that the error occurs on a line to do with reading from a file; it can print to the command prompt etc. with no problems just not deal with the reading the external text file for some reason. By the way paths for files etc. are definitely correct. It makes no sense to me, but from a bit of research it may have something to do with correcting the read statements - at the moment they are just in the form: read(99,*)
View 1 RepliesFortran Samples for Visual Studio 2008 will not debug or run. I can't get the sample programs to run. I am a engineer not a programmer
View 2 RepliesI try to understand how to use a fortran function (which is in a dll) from VB. Actually I want to use vb as interface. I the VB 2008 express form I have 2 textbox and a button. I enter a number in the top textbox and once the button is pushed, this number should be multiplied by 23 and should appear in the bottom textbox... here is my VB code:
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I have a VB.net console app and I am opening a function in a dll written in fortran. I am passing 3 arrays through the function by reference. When they come back out the otherside they ahve all tunred to arrays of only one element And that element is 0.I read on the internet somewhere that when doing this kind of thing it is a good idea to only pass the first element of the array into the function.I tried changing my function declaration to accepting single elements rather than single dimensional arrays, and now the arrays are the same length before and after the function call, but they don't seem to be changing at all, so i'm not sure that this is working
View 1 RepliesI am trying to run a fortran .exe in VB with the Shell() command. The fortran .exe, when ran, it asks you for a file name. It works perfectly on it's own, but when I try calling it through VB Shell(), it does not work.. (i.e. I cannot get VB to get the file name in it.)
Added info:I am using VB9 but I'm writing in compatibility to .NET. As for the Fortran .exe, when you call it, it opens a command window where it asks for a file name (which I got as a string in VB and I'm trying to pass it in), then you press Enter and it's done. Basically the .exe takes a text file and creates a new text file. We've also tried adding & mystring when calling the exe, but it gives a "file not found" error.
You know how you can put a picture in the resources file and it will be included with the exe. I was wondering how could i get a video to be apart of my program so that I would have to carry the video around.
View 1 RepliesI'm writing a class-library in VB.Net and one of the subs that are being called from the application which is using my library has more or less the following syntax:
Public Sub LoadDict(ByVal PhoneticType As String, ByVal strDict As String)
where PhoneticType can be phonSoundex, phonDoubleMetaphone or noPhonetic
I want to give the application-developer a possibility to select the PhoneticType from a list when writing the call of above sub (I think it's called attribute-arguments). This would make it easier for the developer since spelling-errors can be avoided and which will avoid errors when using the library. I think it's all about attributes but I haven't managed to get it to work despite trying.
I am looking to create a gridview with an add button to have the user be able to insert a new blank row. I am also looking for this row to be able to have checkboxes as fields.
View 1 RepliesI am trying to have a user input 7 letters into a textbox, and then have a url like "[URL]". Basically I am needing for the seven letters to be included in the custom url.
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