Exception Being Thrown In Designer-created Code Instead Of User Code
Sep 10, 2010
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?
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 am attempting to use the VB.Net Excel COM interop to programmatically change the location of the first horizontal page break on an Excel spreadsheet being generated by the program. Code to do so is as follows:
Dim range As Excel.Range xlActualWS.Activate() xlActualWS.PageSetup.PrintArea = "$A$1:$K$68"
I've been working on a project the last couple of day with the help of a lot of you out there. I've more or less finished the design of the interfase, but there are stange this happening with the form. I can say much about what is wrong because I dont understand it, but I would like to. I have added the form Class code and the Designer Code, is that enough or is more required? Theres a msgbox that popup in the form Load event which I placed there to see what I could learn about the GraphicsBuffer.
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.
i develop the following code in vs2005, now i just using this module in my new project @ vs 2008..But this error was araised. I cant able to fix this problem...
Private Sub DataAccess() Dim errHandle As New ErrorHandler Dim lobjCommon As New eCopsCommonFunctions
I am currently working on an existing Windows Forms application (VB.net), and am busy reworking the exception handling mechanism.Currently, a lot of methods in the code are just surrounded with try/catch block that catches a generic exception and then calls a utility method that just shows the user a messagebox informing him of the error, and then logging it.So in a lot of cases no corrective action is taken and the exception is just logged. I know this probably isn't the best way but that's they way we're gonna have to do it for the near future.Anyway, I wanted to do this in a more generic way, so I hooked up Application.ThreadException and AppDomain.UnhandledException.
This seems to work well, except for one inconvenience. Whenever an error gets thrown from the .net runtime itself, or a 3rd party control, the stacktrace begins there where the exception is thrown in the framework-methods or 3rd party methods (obviously!)But it would be handier if I had an easy way of finding out exactly where these exceptions cross the boundary into my code. I would like an easy way of determining (in Application.ThreadException) where in my own code an exception originated. am aware this information is contained in the Exception.StackTrace property, but I would like an easy way to get to this specific information seeing as the stacktrace property is one huge string.
I'm using VB.Net. I have a WPF User Control called "NavigationPanel" which I created with the Designer. By default, its scope is Public. When I change its scope to Friend in the file NavigationPanel.xaml.vb, I recieve the following error:
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 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.
I'm using ASP.net 4.0 VB,I am using a session variable to add a user entered code into the url of each page. I can get the code to show up at the end of the page's URL that my textbox is on, but what do I add to every page to make sure that the session stays at the end of every URL that person visits during their session? This is the code from the page that the user enters their user code.
Protected Sub IBTextBoxButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles IBTextBoxButton.Click Session("IB") = IBTextBox.Text Dim IB As String = Session("IB") End Sub
[code]....
This is what I have in the page load of one of the other pages. What else do I add to make sure that variable is added to the URL of that page?
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim IB As String IB = Session("IB") End Sub
i want to see the designer code .. i want to see how myForm is generated using or extending form i mean in C# i can see the code in designer.cs file...but in vb.net i am nt able to see that..
I have a class that inherits the Windows Forms Combobox.The class should do extra work when items are added, but there is no such event.Therefore, I have added methods to add and clear items, which do the extra work.To avoid developers accessing the Items directly and adding to them, I have overloaded the Items property to throw an exception.This all works fine, except in the VS designer. The designer tries to access the Items property, gets the exception and shows an error.Is there a defined constant for when the VS designer compiles the code? This seems like it would be best suited to the task.
I have a program I have been working on, I was coding kind of late tonight and getting sleep. I saved my work and closed the program, but I did something wrong when I saved it. I accidentally saved it to a different folder then the one I was originally using.
I need some assistance again. In my previous posts, I asked about a good book to start learning how to us VB 2008.I had numerous replies, so I thought starting with Visual Basic 2008 would be a great start.As I am reading the book everything had mad sense up to Chapter 4. It's a simply program, and I thought I understood everything, until the middle of the chapter. So here's where I need help, and someone to explain my error.The author explains to place a Label & DateTimePicker onto the form, which I did. I renamed the label to NextWeek and DateTimePicker1 to DateChooser.Furthermore, I proceed to double click on DateChooser, which VB provides certain code automatically.[code]
After a few pages of reading, the author stated to put the following code under Inherits class definition.[code]I went on and put the remainder of the code, which similar to the following:[code]The designer cannot process the code at line 51:Me. AutoScale Dimensions = New System.Drawing.SizseF(6.0!,13.0!)The code within the method 'Initilze Components' is generated by the designer and should not be manually modified. Please remove any changes and try opening the designer again.
but it's something I'm pretty consistently needing for the sake of my own sanity, so:If you add a Settings file to any project in Visual Studio, VS provides a GUI making it quick/easy to add a new Setting entry and assign it a Type; at that point the actual code-behind is automagically created with a variable and a property exposing that variable.Can we build our own designers to generate code this way, with a GUI allowing for those quick/easy variable/property assignments?
i have several forms in my solution that have listview controls and each of those listview controls uses the ListViewColumnSorter class that's provided on MSDN. This class requires a few lines of code in the Form_InitializeComponent Method of the Designer.Problem is, each time something on the form is changed, even if it's just a property of one of the controls, the designer deletes the code that I have for the listviews and I have to go back in and add it again.
Please can someone point me in the right direction? I would like to build my own code designer window similar to that of the one within the VB2010 IDE.I am not sure how to tackle this, at first I was thinking of using RichTextBox as this can accommodate the fonts and colors.
An example of what I am trying to achieve.Should be able to outline, expand and colapse based on my own tags. e.g. in the VB.Net IDE a function and end function are tags that would produce an outline Should be able to change color of text based on characters. e.g. ' would turn green in the VB.Net ide as it is a comment Should be able to indent based on specific tags. e.g. With - End with would auto indent within the VB.Net ide
I should be able to cover the text color and indents using RichTextBox, but I am struggling with the outline expand and colapse.The purpose of the project is to build a simple interface for creating config files that use only specific tags
On a recent project I stumbled across a page of code that looked unfamiliar, but which evidently was the code behind my form design. I'll copy and paste an excerpt to show you what I mean:
'Required by the Windows Form Designer Private components As System.ComponentModel.IContainer 'NOTE: The following procedure is required by the Windows Form Designer
[code]....
I thought this was a useful way to back up my project via email because it's in text form. But now I can't find the same information. I've looked in the Object Browser but couldn't find it anywhere. I think I stumbled on it the first time by right clicking Go to definition, but now that doesn't take me anywhere if I click on say form1. So where will I find this mysterious page that has all the form items information in text, not graphic form? Can't find it anywhere.
Just wanted to know if you had some design code which was created, and that is all you have. Can you open this designer code and create the actual working main Form from this? I don't need this designer code for any specific task, just wanted to know if there is a command within VB Studio 2010 that creates the actual Form from the design code. For example; The following piece of designer code is for a simple program that finds the Circumference of a Circle.
When I try to open up a form designer, all I see is code and no form! How can I open up the designer, since the code says to modify using the designer and not the code editor?[code]....
I was working on my project (creating a new form), and when I switched from the code view back to the designer view, I got the following error:
The designer cannot process the code at line 118: Me.VDARSQLDATASET = New Veterinary_Digital_Anesthesia_Records.VDARSQLDATASET() The code within the method 'InitializeComponent' is generated by the designer and should not be manually modified. Please remove any changes and try opening the designer again.I am now getting this error on every page. This project has been working for months just fine, but for some reason the VDARSQLDATASET has dissapeared- kind of. I can still access the dataset (the file is still there), I just can't reference it in the code (intellisense can't find it).
I am creating a VB.NET (2005) GUI that uses several controls embedded into tab pages.When VB.NET autocompiles (if I switch windows) it adds lines of code to the .Designer file that causes errors:Windows' is not a member of 'System.Windows.Forms.TabPage'.is generated for:
Me.tbRxMinValidBits.TextAlign = System.Windows.Forms.HorizontalAlignment.Right The underlined part is what .NET is showing as the error.
Most of my project was imported from an older version of VB (now I'm using 2008). All of the forms had a "Windows Form Designer Generated Code" that I could expand at the top of the form's code. When I created a new form, that was not there, and I found out that in the solution explorer you can "view all files" and expand the form and look at MyForm.Designer and that has the same type of instantiation code. My question is, is there some way to update the old ones so they too do not have that "form designer generated code" at the top?
I use the code about video capture of this site, it ran very well ! VB Helper: HowTo: Capture video from a video device such as a Webcam with VB .NET But I want to change the interface of form then after I customize my new one with button, picturebox (with the right name), copy the code again except this paragraph #Region " Windows Form Designer generated code "
