I get an 'overflow exception was unhandled' error in the following code.
It is a function to combine 2 bytes into a 16 bit integer.
Private Function MakeInt16(HiVal As Byte, LoVal As Byte) As Short
Dim h As UInt32 = HiVal * CUInt(256) + LoVal
Return CShort(h)
End Function
This piece of C# code does not produce any overflow exception.wordsize is a constant equal to 32.the x and y can be very big at the computation time. So big that long or decimal even cant hold. But C# handles the problem even the value of the variables exceeds its limits.The computation gives thr right result.(I dont know how it does it)
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I'm writing a CPU emulator in VB .NET.It's important to keep the code tight for maximum performance.
The following test code shows an example of my issue[code]...
Now I know I can use a long, and mask the value with &HFFFF, and I know I can add exception handling to the code. but remember, this is an emulator and more code = less performance.
I have the following code for finding factorials:
Private Shared Function Factorial(ByVal Number As Long) As Long
If Number = 0 Then
Return 1
Else
Return Number * Factorial(Number - 1)
End If
End Function
It usually results in an overflow. It only works if I start with something small like 4. I have to work with starting numbers such as 30-60. I thought changing the value type to LONG would prevent this problem. This is VB.net just for reference.
I have created a console application to run through the db (about 22K )records and update some values nightly. I've added an email to myself on any errors. When running the task I get about 500 emails saying:
"Overflow" (which is what's returned by : exception.Message)
What does it mean? Is it running through the db too fast?
Here is my code:
For Each dataRow As DataRow In dt.Rows
curries = 0
baseDate = Nothing
sourceID = 0
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I have a class as below in VB.NET. The issue is class calling itself. So vb.NET throwing Stock Overflow exception. But the same class is working fine in VB6 version of code in VB6.How to resolve this issue?
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I'm attempting to insert rows form a ListView into an access DB. Here is the code from the Finish button. From line 55 down is my trouble area.
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I have been trying to make a program to solve for the x intercepts of a quadratic formula and have gotten this far. Whenever i debug, it says "A first chance exception of type 'System.OverflowException'" It seems to be with the code shown in bold.
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I cant seem to spot my regex miss take(always been poor at RX). Is only passing the first expression. I assume it's because i am passing both expressions with "text". [code]
View 1 RepliesCould it so when the timer is ticking that it will move the mouse over to a certain color and click the spot once? For example if it finds on the screen a "green" spot or "hue:79 ; Sat:224" that it will click the spot once?
View 1 RepliesI'm writing some code in VB.Net which I hope demonstrate to colleagues (not to say familiarise myself a little more) with various design patterns - and I'm having an issue with the FactoryMethod Pattern.
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Can any one spot the miss takePrivate firstRegex As String = [wd]+.json?mbed_type=website_unknown"
View 5 RepliesI'm trying to copy an array starting at a specific based on the number of variables I have. I have the program give me the number of variables. What I need is to copy the original array, UnsortedArray, start at the index of var + 1. I have tried the Array.Copy and Array.CopyTo, but I get the error that my new array, UnsortedNumArray, is used before it has a value.I know I've mostly overlooked something. Could you please point me in the right direction? [code]
View 5 RepliesTI have a picturebox on top of another picturebox, like a smaller square perfectly in the middle of a lil bigger square picturebox, if you click on the smaller one inside the slightly bigger one, it checks to see what the color is of the picturebox "under.It", or the Picturebox thats bigger than it, and is like sourounding the smaller one in the middle of it... If when you click the small one, and the BG Color of the one that's under it is Black, change it to white, "my forms bg color is also black"....so the highlighted pictureboxes will seem more like they get highlighted, ya know...
Here's the code, after you've looked at those pictures, you can probably imagine what I want this code to do, and it's really Guiness really, because when I program in VB.NET, and before I go to YouTube to teach others how to do different things with VB.NET,I like to make sure that my program is very simple, but very effective, and does the job.When I click two pictureboxes, and when my app knows that I have clicked 2 of em, which I had no problem being able to do, I want the FIRST PictureBox To Switch With The Second One That Gets Clicked, It's CHESS....It Seems So Damn SImple, BUT I'M STUCK AGAIN, AND I WANT TO MAKE A CHESS BOARD IN VB.NET.
I have kind of a wierd situation: To start out, I have a list of strings. Then the user will give input and add list items. I have this^ part done. What I need to do now is the following: There are two buttons; button1 and button2 There is also something else that I still need to decide on (maybe a dropdown menu) I want button1.click to show openfiledialogue1, the user will pick a text file from their computer (I also need to know how to make the only file they can select text files) and then save the file's text to a string. The text will be made up of multiple lines of an unknown number.
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so i have came so far by now :
Public Class Form1
Private Sub WebBrowser1_DocumentCompleted(sender As Object, e As WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
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anyways, i want to simulate a click in a specific spot of this browser ... lets say i want to click the upper part of the webpage . how will i do that ? i actually searched but i found only click given the coordinates of the desktop or things like this but nothing for giving coordinated to your program and that will click INSIDE your browser
It is possible to catch an exception and throw a new exception which wraps the first exception as an inner exception: [URL] Also, if I call a function and it throws a certain error, but I catch it, will the calling code's catch handler execute? If so, and it is of a higher exception type, is this not wrapping the exception? eg I can throw exception ex of type IndexOutOfRange, log it but rethrow, catch a higher up exception and do something, or I can throw a new exception and wrap an inner exception like:
View 1 RepliesI had this code
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That creates a text box in the top left corner. Is there a way to tell were it will be made?
I am trying to read a file and note the last position in the file. The next time I look at it, I want to pick up where I left off. What I'm finding is that sometimes when it comes back to the file it is 2 characters further in than it should be. The code I am using is:
Private Sub Read_Log(ByVal skip As Boolean, ByVal recursive As Boolean)
Dim logfilestream As FileStream
Dim logreader As StreamReader
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I'm thinking about backing up to check previous characters - but I'd rather not hack over the problem if there is an actual fix to it.
there's a list-box with items, and say you want to modify an item in the middle of the list. You select that item and click "Modify" button and a new form appears with the previously selected item data from first form ready to be modified in a text-box. After modifying and clicking Ok the second form suppose to return that modified string to the first form and insert the modified string into the same spot instead of the originally selected item, so it looks like it was edited to the user.
View 2 RepliesI have this code attached to a button
If htmlText.Contains("<frame src='demo.html'/>") Then
htmlText = htmlText.Text.Replace("<frame src="demo.html/>", "<frame src='" &
OpenStory.FileName)
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I am trying to write this program that logs into this website. Now I figured out how to make the http "POST" request to the specific spot on the page which returns a "Successfully logged in" afterwards but once I make a request to another part of the page, it asks me to login (I look at the source code). I have been messing with Fiddler and I compared the a POST from my webbrowser to a POST from my program. I found the following lines to be in my browser POST and not in my program post:
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I am assuming this has something to do with the cookie that I am suppose to get to be able to tell the website that I am logged in. If someone could point me in the right direction that would be great. I dont use XMLHTTPREQUEST in my program. I found it earlier on the msdn website but now I cant find a reference to it.I am also not good with term names and I just started learning VB and don't know much about cookies/HTTP requests and such, but that is why I am trying to learn.
What I want to know is that in VB.net is it possible to get a stack overflow, and if so how is it caused. What I mean is, what sort of written code would cause a stack to overflow.
View 2 RepliesI was wondering, in a toolstrip there is an overflow option
View 3 RepliesI've never seen this error before; and apparently (According to DIC) the number would have be bigger than -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807, to this this exception (I'm using an Integer, but I've tried Int64, and the same thing happens).
This is where the exception is being thrown:
Dim localPort As Integer = (tcpRow__1.localPort1 << 8) + (tcpRow__1.localPort2) + (tcpRow__1.localPort3 << 24) + (tcpRow__1.localPort4 << 16)
Full Code (Method)
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I highly doubt that that the integer that is being parsed back is greater than, either of those numbers listed above. I've tried using Int64, and even removing the << operator, but it's still throwing this exception.
I need to make some big multiplications for cryptographic reasons in vb.net and overflow the variable as C,C++ and C# does. I have disabled the check of overflow at the vb.net project but when i an doing those multiplications i get as a result 1.#INF
ex. in c:
z^y= 0xFFFFFFFF ^ 0x000003FC= 0xFFFFFC03
in vb.net:
z^y= 0xFFFFFFFF ^ 0x000003FC= 1.#INF
I am getting an overflow somewhere while populating my database.The number of records inserted is different every time I get the error and I have been unable to trace where it is coming from.
View 7 Repliesthis exception gets raised on a standard dim command???
Public Sub Life(ByVal AnyEvent As Object) Dim myNewLife As New Life Dim Happiness As New Collection Happiness.Add(AnyEvent) myNewLife.Experience(Happiness) End Sub
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I am making a program that reads files (exe and dll) and compares them byte for byte and then save the diffrences.when i read the file it crashes. when the binary reader reaches position 3 (RAW offset 0x03) it crashes with the sentence: Arithmic operation resulted in an overflow. I tried different files and its always at position 3.[code]
View 5 RepliesI need to overflow text of a cell that has too much data. I can't easily split it up into multiple cells so I guess the only choice now is to overflow it, but I just cant seem to find a way to do it.[code]...
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