VS 2008 Displaying Code That Causes Exceptions In The IDE?
Dec 6, 2009
I'm encountering some rather strange behavior in the VB2008 IDE regarding exceptions. I tried to explain what I need as best I can in the title, but I'm not sure there's a succinct way to describe it.I'm not the best programmer in the world to say the least, so sometimes I do things that generate exceptions when I try to run them (This is why we test things continually, right?). Typically, in addition to the Exception Assistant popping up and giving a suggestion, the IDE highlights the code that caused the Exception in the Code Window.
Well, today I went back to a project I had been working on after putting it on hold for awhile, and while the Exception Assistant still pops up when there's an exception, the IDE doesn't auto-scroll and highlight the offending code anymore. I have no idea why it does this, nor do I know how to fix it. Resetting settings from the Import and Export Settings Wizard didn't fix the problem, and neither did trying to reinstall VB2008. Is there some setting, obvious or otherwise, that would cause this?
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Apr 27, 2010
I have a form where it is validating three fields. I want to have it so if an exception has been thrown in any of the three fields that the code that is in the button does not run and it redoes the validation.
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Apr 28, 2012
When two computers are connected through TCP, and one of them closes and breaks the connection, it throws error 10054 "Remote host forcibly closed the connection".I want to handle this error because I know it will happen more often than not with the application I'm building. In System.Net.Sockets.SocketException, there is an on the error code. But when I run the program, the exception that is being thrown is System.IO.IOException, and the GetType for IOException is the socket exception. I don't know how to handle the socket exception if it's not the root cause of the exception.
Here is the code for my Try Catch block:
For infiniteCounter = 1 To 2
infiniteCounter = 1
[code].....
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Jul 9, 2010
I Have just been watching a video on throwing Exceptions. Are you supposed to throw System.Exceptions from within your custom classes. to the calling code, Which other way can they communicate. I have read in several places it is bad practice to throw SystemExeptions.
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Dec 26, 2009
I've just skipped around a few inbuilt VB classes' methods which throws exception. of all that i've came across, methods may throw multiple exceptions but ALL of them are exclusive, meaning there is no way 2 exceptions will ever occur simultaneously, yea and i was trying to make my class throw 2 exceptions simultaneously, hence this question, must all exceptions be exclusive?
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Feb 21, 2010
I have a simple piece of code that checkes if the connection to the database failed or not.
[Code]...
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Sep 2, 2009
I don't understand why do I get exceptions in the emmediate window and how could I resolve them as they are not showing where and how do they occur. I get these every time I run he application in the Studio:
[Code]...
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Aug 30, 2009
When I run my VB application (as far as I know any application) within Visual Studio I get a bunch of exceptions listed in the Immediate Window. They seem to refer to system files, not the files I generate. They also keep generating as the program processes data. Here is a sample.
Quote:
A first chance exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll
A first chance exception of type 'System.ArgumentException' occurred in Microsoft.VisualBasic.dll
[Code].....
Any thoughts as to what this is and whether it is a problem. The applications seem to run fine.
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Apr 11, 2012
Is there a way I can catch and handle two different exceptions within the same exception type? For example:
Try
' My code
Catch ex As System.Net.WebException
End Try
I have 2 different exceptions that are System.Net.WebException. I want to handle them different ways. Problem is the catch block above catches them both. Is there a way I can determine if which of the two it is and handle them differently?
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Jul 15, 2009
I'm using VS 2008 and .NET 3.5. I'm in one of my programs and when I run the program to test it, I keep getting these errors... 'Exception occurred' And the line is highlighted green and there's a green arrow on the side line (where you can enter breakpoints). When the code stops at these exceptions, I can hit continue and the code still runs just fine even though there were a ton of exceptions. Now, I'm wondering if there is a way that I can skip over these or have them not show up because I know the files that this is happening have not been changed in several weeks and I've tested this program beginning of this week and it was working fine... no exceptions or anything. I'm not sure what would've changed. The only thing I did was install the newest versions of Telerik Rad Controls. That should have nothing to do with the exceptions I'm getting.why i'm getting these now all of a sudden or how I can just skip over these without having to hit continue after each time?
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Sep 11, 2010
I have already incorporated DirectX into a program and set the owner to a picturebox which so far works great, but all it does is set the place/dimensions of the directx window to the picturebox... it doesn't actually USE the picturebox for the video so if i pause the video or set a timeframe I can't use the picturebox frame/image to pull information from. So what I want to do is when i pause the video at a certain frame I want to be able to actually take a snapshot and populate the picturebox with that image and then be able to save/manipulate it like a normal picture. I have read some examples and coding on screen snapshots using DirectX.3D, but not audiovideo. Not sure if its the same or what. I know normally you would start out with CODE, but in this case I have NO IDEA exactly where or how to start it.. I tried Bitmap options with the screen area/location, etc... but was getting errors and exceptions..
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Oct 21, 2009
So I've made this control that inherits from the treeview control and basically loads objects from active directory into a treeview (url...).All working fine, but as this is the first custom control I have made that I have intended for other people to use, I'm not quite sure how I should approach error handling.I mean, obviously I shouldnt do something like show any exceptions in a messagebox because that might not be what the person that is using the control wants to happen. So do I just write out exception messages to the debug window? Do I swallow exceptions (guessing not)? Do I just totally ignore them so that they are thrown in the user's project?
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Jun 8, 2010
i created a Class library (.dll) and loaded it as reference into a main project. In the code for the class i've handled exceptions using try..catch subs, however when debugging the main project exceptions that are handled in the DLL still get thrown! (the class ".vb" file gets loaded into the debugger and the line of the exception shows up)
Up till now i've found it useful that when an unhandled error occurs in the imported reference, it shows up in the main project with tracing back to the referenced class. But i dont want the exceptions that are handled in the reference class to be thrown when debugging the main project!
As you can see the exception thrown was handled with try...catch this class exception.vb belongs to the project that created the class library (.DLL that i referenced). i didnt even load the project that built the reference so it amazes me that it could find the coding class to begin with.
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Mar 30, 2011
In PHP I can use the following to stop HTML from rendering, so it actually displays html as text on the web page:
$html = "<div>Some text</div>";
echo htmlentities($html);
How do I do the same with asp.net pages (vb.net). I am using .NET 3.5.
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Oct 28, 2010
Can anyone possibly take a look at my code (below) and tell me what I'm doing wrong? I have been sitting here for hours trying to figure it out. I'm very new at this and I'm thoroughly confused. I am using a book for Visual Studio "Programming in Visual Basic" and I have gone through all of the tutorials and code examples and followed them exactly (at least as far as I can tell). However, whenever I run the program, I am not getting the sum of the quantities I assigned to the constants showing up in"AccessoriesTxtBx" as I'm trying to. It shows up as $0.00 even when I have checked the boxes.[code]
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May 4, 2012
I've written some code to get an image file from a OpenFileDialog, and then offset the X position of the image by -50, and then display that offset image in a panel. But for some reason, it is displaying the image twice inside that panel. Could someone please tell me how to get it to only display the offset image in the panel? I'm sure it's something simple, but I'm wracking my brain with this one.
If OpenFileDialog1.ShowDialog() = Windows.Forms.DialogResult.OK Then
Dim Bitmap As New Bitmap(OpenFileDialog1.FileName)
Dim Graphic As Graphics = Graphics.FromImage(Bitmap)
[code]...
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Mar 10, 2011
On the page I have created I have a search facility that if a doctors number is searched it will bring up the doctors details, once search button is clicked the results are displayed in textboxes (I cannot use gridviews because this is not wanted)sample of code placed on the search buttonQuery statement = "SELECT DocNumber FROM tblDoctor WHERE DNum LIKE '%"execute the query and get the resultThe result is converted to string and Execute Scalar is usedDocNum.Text = Result1
Query statement = "SELECT DocName FROM tblDoctor WHERE DNum LIKE '%"
execute the query and get the result
The result is converted to string and Execute Scalar is used
[code]....
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Oct 12, 2009
I have made an application in VB 6.0.In this application ,i am connecting one controller through serial port to laptop.I have used MSOMM control for this purpose.Controller is sending data as a string .On VB 6.0 applicaton in laptop ,i am getting data displayed in one text boxall in ASCII code/characters.Total chatacters in string are 61.My problem is this that all 61 characters are comming in one text box.I want thateach character should come in seperate text box so that i can be able to display them individually,i.e. 61 characters and 61 text boxes.
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Feb 6, 2012
I need to create a number of barcodes as images on a page from a set of UPCs from a database.Additionally, I also want to be able to produce barcodes which can print as labels to a Dymo LabelMaker.Googling turned up several options, but it seems that for the LabelMaker it'd be wise to produce the barcodes as PDF? So, I started looking into iTextSharp which seems good (and free!)Looking fora simple way to render a Barcode Image to a page, I found this, which looks to do exactly what I want, but I can only get it to work locally. When uploaded to the server it just shows an empty image.I have checked and double checked the web.config file contains everything required and am pretty sure that Adobe Reader is installed on the server (as was suggested by another post in the link). There's a post in the link which says
I just wanted to put a small update for those running IIS7, if everything works fine when running locally in VS debug mode, but you get a red x when accessing it remotly, you may need to add the handler in the section as well as/or the i.e.Which sounds like it's answering the problem but doesn't..url...Part 2 of my question is, am I heading down the right line to print the individual bar codes to a LabelMaker by using iTextSharp?
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Nov 22, 2011
provide a simple example code for displaying a string array of (9x13) values in a datagridview control. I am lost in the complexity of data binding and datagridview controls. I am an experienced VB6 programmer and cannot seem to grasp the transition from flexgrid control to datagridview control.
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Sep 28, 2011
I got some problems with displaying a treeview in vb2008. I want to display a company departments and got two access records: one for the top department and one for the sub-departments. The code looks like this:
TreeView1.Nodes.Clear()
ProgressBar1.Maximum = rsDepartment.RecordCount
ProgressBar1.Minimum = 0
[code]....
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Jul 31, 2009
I am having trouble with the datetimepicker. I use this and I tried as many as I could but didn't get a proper result, this one is the closest, so atleast while debugging I can see it having the right value:
datePContBDay.Value = dsn.Tables(0).Rows(0)("PContDOB")
But all it shows is todays date, don't know why?
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Jan 24, 2011
I'm trying to display a image by treeview item checkbox with the code below.
Dim itm As ListViewItem
itm = New ListViewItem("Test")
itm.ImageIndex = 0
ListView1.Items.Add(itm)
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Feb 4, 2012
I have database like this [URL]but I will need to display only certain columns, which will depend on which user has logged in. Each user will have a unique ID, and so I want that that datagridview would only display the rows, which are for him, well have his ID, so that he couldn't see other users information, but only the one associated with him.I also need to output that user's forename and surename into label, it is stored in the database.
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Apr 26, 2011
I've got all the code figured out to make a picture box appear with a gradient inside of it. My problem is that the gradient doesn't appear in the picture box when the form loads, paints, or when the picture box is painted. I can only make the gradient appear if i click the picture box after the form appears.
Dim xFormTopColour As Color = Color.Black
Dim xFormBottomColour As Color = Color.DarkOrchid
Private Sub frmTestGradientBars3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Call GradientPictureBox(xFormTopColour, xFormBottomColour, picSample)
[code]....
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Mar 31, 2009
why is the notifyicon not working at all?i added it to the form filled the text and title and just to see it i put the following in the Form1_Load
NotifyIcon1.ShowBalloonTip(100000)
NotifyIcon1.Visible = True
i run it and nothing, no balloon ... why? what am i missing? my OS is Windows XP Pro SP3s...
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Feb 9, 2012
How do i get this code to display my image using a database this is my code.
code
Private Sub Details()
Dim oleDBC As New OleDbCommand
Dim OLEDBDR As OleDbDataReader
con.Open()
[Code]...
Unable to cast object of type 'System.String' to type 'System.Drawing.Image'.
but if i use lblName.Text = (OLEDBDR.Item(1)) it will display the path to the image.?
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Mar 10, 2010
Public Class ReceiptSpectacles
Private Sub ReceiptSpectacles_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[code].....
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Nov 24, 2009
I've put a page long document into a richtextbox, thinking I could get rid of the cursor (or caret -- whatever it is when you click on it) but no luck. (I guess there is an API for this -- and it may come to that).
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Jul 6, 2009
How can I play a sound, then draw its Sound Spectrum on, like a Panel?
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