Call A Function Everytime It Throws An Error?
Apr 2, 2011Is there a way to call a function everytime it throws an error? I could use try catch, but I need to do it with unexpected errors.
View 8 Replies
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Function Returns Nothing, Yet Throws An Error During Comparison?
Mar 21, 2012In our code base there is a function which should return either an object or nothing. The exact code is this : Return NothingThe calling method looks something like thismyObj = theClass.function()if myObj <> nothing then // fails
View 1 RepliesVS 2010 : Convert A DLL Function Call Which Has The Callback Function Routine Called Within The DLL Function Call?
May 25, 2012I am trying to convert a DLL function call which has the Callback function routine called within the DLL function call.The DLL function call signature is like this:
typedef void *HANDLE;
typedef HANDLE HACQDESC;
DECLARE_HANDLE (HWND);
[code]....
how to convert this DLL call to VB.NET and also how to create the callback function and send it as parameter to this function
call.
Call A Little Error Check Function ?
Jul 13, 2010I am just trying to call a little error check function, and if the return value, isOK, is false, let the user change stuff and then call the function again. If isOK is true, the rest of the program runs. For some reason, when i run the test under conditions I know to be valid, or true, the function still returns isOK = false.
CODE:
Call The Function And The Compiler Error Went Off When Get A Return Value From That Method?
Mar 11, 2009I'm using VB6 and trying to get an instance of a Type Library object.After i retrieved the object and i'm trying to invoke a method. I'm getting this exception. However, i've checked with the parameters and its type. it is correct.I found something fishy, that method doesnt have return value. But it is throwing a compiler error whenever i'm trying to call the function and the compiler error went off when i get a return value from that method.I don't know,
View 1 RepliesCalling A Class - Get An Error When Trying To Call The Sub/function The Normal Way?
Sep 1, 2009I have a Windows form Application that I am creating, could also be a Windows Service that I need to run.There are basically 2 Classes that were converted from java to vb.net and 1 xml file to this. for testing purposes I would like to use the Button.click event to manually run the code.However i get an error when trying to call the sub/function the normal way.I even tried to put this classes information in the Public Class Form1 but it keeps on giving me errors.This is the Sub:
Shared Sub Main(ByVal args() As String)
so how do I call it from a Button.click event?
normally i would just do a "call main()" and it works however this time it is not because of the (byVal args() as string)
Error: A Call To PInvoke Function Has Unbalanced The Stack
Dec 15, 2010i have an error when im using a function in dll. i declare this( "Private Declare Function SetChannel Lib "StreamReader.dll" (ByVal freq As Long, ByVal smyb As Long, ByVal pol As Long, ByVal fec As Long, ByVal lof1 As Long, ByVal lof2 As Long, ByVal lofsw As Long) As Boolean") [Code]
this is that error"A call to PInvoke function 'skynet!WindowsApplication1.Form1::SetChannel' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.".
Write A Function That Is Called Everytime An Exit Button Is Pressed?
Feb 26, 2012I'm looking to write a function that is called everytime an exit button is pressed, just simply prompting the user to click yes or no is there a guide anywhere? is there a name for this kind of thing i can look at it more?
View 7 RepliesVS 2008 Error Operation Is Not Valid Because It Results In A Reentrant Call To The SetCurrentCellAddressCore Function
Oct 27, 2009What I am trying to achieve is if there is an error in cell 1 of the current row it returns to that cell. The code below tries to achieve that, but I get an error message thus:Operation is not valid because it results in a reentrant call to the SetCurrentCellAddressCore function.
Private Sub RoomPricingDGV_CellEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles RoomPricingDGV.CellEnter
If e.ColumnIndex = 2 And cellerror = True Then
[code]....
DataGridView Editing - Error - Operation Is Not Valid Because It Results In A Reentrant Call To The SetCurrentCellAddressCore Function?
May 12, 2009I have a datagrid with a lot of column, but only a few group of it can be edited by user.On a CellEndEdit event i update automatically the database with the new value when the user modify one cell and then I must recharge the dataset of the dataview.If I modify a cell and then use tab or enter to move to the next one everithing is ok, but if I change a cell and then mouse_click on another one i get thi error when i recharge the dataset:
Operation is not valid because it results in a reentrant call to the SetCurrentCellAddressCore function
What can i do ?
E.HasMorePages - Written A Function That Will Plot Long Texts Onto Printer And Should Insert A New Page Everytime
Apr 30, 2011I'm having issues with e.HasMorePages.. I've written a function that will plot long texts onto the printer and should insert a new page everytime yPos > PrintHeight
e.g.
Module Scope var i is the count
PrintPage
if i<=10
[CODE]...
I can certainly add pages from the printpage, but my function will plot characters individually onto the printer and will increase ypos at the end of the printers width.
Error Coming Up Almost Everytime Run Application From VS
Dec 20, 2011see the pic. and advise why this error is coming up and how to fix it.
View 1 RepliesCascadeWindows Win32 Function Throws An AccessViolationException On Windows 7?
Aug 31, 2010Private Declare Function CascadeWindowsNative Lib "user32" Alias "CascadeWindows" ( _
ByVal hwndParent As Long, _
ByVal wHow As Long, _
ByVal lpRect As Long, _
ByVal cKids As Long, _
ByVal lpkids As Long) As Integer
calling:CascadeWindowsNative(Nothing, &H4, 0, 0, 0)
[2008] Mysql Error - Everytime The Db Row Id Reaches 127
Feb 1, 2009I'm updating a database every few minutes in my program but I get this error
Duplicate entry '127' for key 1
Everytime the db row Id reaches 127.
Function Syntax - Call A Function With 2 Arguments When The Function Is Only Defined For One
Apr 1, 2010I'm trying to undersatnd the syntax of calling a funciton and it seem confusing when I'm using a web service in ASP.net. Maybe this question should be in an ASP forum, but it is a VB question. This simple web service allows you to type in your name and it response with an alert box with you name.
My question is, How can you call a function with 2 arguments when the function is only defined for one. I understand that the second argument is actually a method that handling the respons, but how can you interchange function arguments for methods and how do you know that there are methods for
Here's my call:
<script type="text/javascript">
function HelloWorld()
{
var yourName = $get('txtYourName').value;
[CODE]...
Call A Dynamic Compiled Func(of ) Function Via Expression.Call?
Mar 22, 2012I want to create an ExpressionTree where a Func(of Vector, Vector, Vector, Vector, Double, Double, Vektor) should be called. So I use
Expression.Call(Forces(0).Function.Method, {Vec1, Vec2, Vec3, Vec4, Double1, Double2})(Vec1-4, Double1-2 are declared as ParameterExpression and Forces(0).Function as Func(of Vector, Vector, Vector, Vector, Double, Double, Vector). But I get an AgrumentException, because Forces(0).Function.Method has seven Arguments. (System.Runtime.CompilerServices.Closure as seventh argument at Index 0).
Call Function By Exe Application Error "Parameter Count Mismatch"
Jan 18, 2011I have a DLL , written in VB.Net. This DLL has a below Function: Public Shared Function CreateApplication(ByVal aobj As Object) As Object When i Try to call this function by exe application with below routin i get "Parameters count mismach" Error. Public Function loadDllAndRunMethod(ByVal dllFilePath As String, ByVal className As String, ByVal methodName As String) As Object
[Code]....
Error - Call To PInvoke Function 'WindowsApplication1!WindowsApplication1.Form1::GetCursorPos'
Aug 24, 2010I'm getting the following error:A call to PInvoke function 'WindowsApplication1!WindowsApplication1.Form1::GetCursorPos' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.
[Code]...
GlutInit() Throws An Error - Cannot Find DLL?
Jan 17, 2011I'm currently building an application in C#, using a basic design I came up with in VB.net for applications involving openGL. Using the Tao framework in VB, I have the following method:
Private Sub checkForGlutInit()
If glut_initialized = False Then
Glut.glutInit()
[code].....
.net - App Works In IDE But Throws An Error When Compiled And Run On Another Machine?
Nov 15, 2009I have created an application using VB.NET in VS2008. When I run the app in the IDE on my development machine it works fine. It also works fine when I build it and run it as an exe on any machine that also has Visual Studio installed (at least 2005 and 2008 anyway) However, when I try to run the compiled executable on any machine without Visual Studio it throws up an error "[program name] has encountered a problem and will close..."
View 5 RepliesCode Change Throws Object Error
Sep 16, 2010I have a piece of code that I believe is the culprit in a "Object reference not set to an instance of an object" error being thrown.[code]
View 4 RepliesDB/Reporting :: DataGridView Throws An Error When Remove A Row
Mar 16, 2012Yes its me again with yet another problem Ok so I've now gotten round to trying to display some data from my database and displaying it in a DataGridView Heres the critical part
[Code]...
Getting Selected Rows From Listview Always Throws Out Error
Feb 8, 2012I am trying to get the selected rows from a listview. To achieve this, I did this:
Dim numsel As Integer
numsel = Me.ListView1.Items.Count
For countme As Integer = 0 To numsel
[Code]....
It does count the selected rows, but it always throws out the error saying "ArgumentOutOfRange Exception", or something along those lines. For example, if I selected a row, it will output the results of that row. But the loop goes on. I tried everything I can but to no avail. I specifically want to select multiple rows, and I can achieve that if someone can assist me with this simple "problem" I have.
Valid Number Throws Overflow Error
Oct 6, 2010I have a major problem. Things were going great until I came across this little bug(?) which has thrown a stick in my spokes. As I will demonstrate below, it seems that when defining certain numbers Visual Studio will throw an overflow error.
Dim T As ULong = 14774537964905701134 'Overflow error in the IDE
Dim M As ULong = ULong.MaxValue '(18446744073709551615) we are below the maximum value so it should work, right?
The one solution I have found is that we can use the following declaration instead.
Dim T As ULong = ULong.Parse("14774537964905701134")
However, to make matters even more complicated the value in question is unknown and must be compiled using CodeDOM so using the Parse method isn't an option. Unless there is some way I can determine if that value in particular will give me an overflow error.
Webbrowser.navigate To Tif Throws Browser Error?
Oct 27, 2009I recently upgrade a project from vb 6 to 2008. Most of the code runs fine.I have a webbrowser form control that I use to navigate local files and display them with. (i have a file list box that you click which calls the navigate of the browser control). Most file types i have test work fine and display just as they would in a real browser window. Excel, PDFs, etc... so examples of files that utilize "plugins" like acrobat reader inside the browser work great. Tiff files are the exception. No error is thrown in vb, but the browser throws 2 runtime errors, included at the end here. After the browser errors are ignored the program continues execution but will just not display the file.
i can type the path to the file (eg c: estfielsfilename.tif) in a regular browser window and it displays just like it should, inside IE, using a plugin.Prior to upgrading, depending on what was installed on the computer, navigating to a tif would open the tif with picture and fax viewer, or display it with a tif viewer plugin.
Line:1
Error: Invalid Character
when click NO to debug it goes to
Line:0
Error:object expected
Call A Function From Inside Another And Suspend It Until The Called Function Is Finished
Jan 25, 2010How can I call a function from inside another function and suspend the calling function until the called function is finished? I hope I can get some replies because I don't know how to ask the question and make sense:).
Anyway what I am trying to do in steps:
1. The user clicks button1 which triggers the click event.
2. From the click event I call a function
3. I then pop-up a form, that has instructions for the user to read.
4. After the user has read the form he will click the "Done" button and return to the calling function.
The problem is the the calling function continues to execute. I want to stop execution of the calling function until the users clicks the "Done" button on the instruction pop=up. I know I can use a msgbox but the instructions can be lengthly and does not look good in a msgbox.
I have tried the Call method with return in the "Done" button click but I can make that work. I also tried a goto statement but I can get that to work either. In the call statement I said call frmInstruction.show() and it got there but as I said the calling function continued to execute.
Getimage Of Control Function - Call This Function For Saving The Images?
Jan 30, 2010ive two custom controls, which are used to draw and edit etc...(like paint but customized....) i want to save their images with a single click....So im using the Getimageofcontrol function to do it....its code is below:::
Public Function GetImageOfControl(ByVal c As Control) As Image
Dim rc As New Rectangle(c.PointToScreen(c.Location), c.Size)
Dim i As Image = New Bitmap(rc.Width, rc.Height)[code].....
and the code to call this function for saving the images is simply.. ...
GetImageOfControl(pboxd).Save("c:78.jpg")
GetImageOfControl2(pboxf).Save("c:lp.jpg")
but the problem is that both the images have the same content....
Threaded Function Call Slower Than Calling Function Directly?
Sep 14, 2010I have a function where I am performing a lot number of database operations inside a Sub. The operation when called directly like:ExecProcess()
takes about 11 seconds to run.However, if I create a Delegate, and call the sub using BeginInvoke(), the very same process takes over 40 seconds to execute.Here's the threaded code:
Protected del As ProcessDelegate
Protected Delegate Sub ProcessDelegate()
del = New ProcessDelegate(AddressOf SELocal.ExecJob)
Dim cb As New AsyncCallback(AddressOf Me.ExecJobComplete)
del.BeginInvoke(cb, del)
Anyone know what may cause a function to take longer inside a new thread, rather than calling directly?
2010 On Windows 7 Throws FIPS Error On Compile
Apr 20, 2011I'm trying to compile a brand new 2010 windows forms application with a form and a single button that should display a msgbox with "hello" in it.When I try to compile I get the error message:
Unable to write to output file <filename>: This implementation is not part of the Windows Platform FIPS validated cryptographic algorithms.
Asp.net - DropDownList Throws An Error When A ListItem Is Not Present Anymore?
Mar 3, 2012The application that I am working on is a Service Desk App. I have a form there that uses a DropDownList that contains employees names coming from the Active Directory. Any employee can make a request and save it. Problem arises when an employee leaves the company and consequently his account is deleted from the Active Directory. When some other employee searches the DB to finds a relevant Service Ticket that could be of his use, when tries to open it an error is thrown that indicates that the name does not exist in the DropDownList items.
UPDATE:I am adding some code so that it can be more clear.
<asp:FormView ID="FormView1" runat="server" DataSourceID="SqlDataSource1"
DataKeyNames="ITRequestId">
<EditItemTemplate>
[code]....
