Custom Scrollbar ... Works Fine Until Move / Resize It In Designer
Oct 28, 2011
I have been scouring for examples to give me some idea on what I need to do to create a skinable scrollbar. The only thing close that seems to work like I need is Cool Scrollbar The problem I am running into is on the designer...when I move it, resize it, or change the direction of the control (ScrollbarLayout), it seems to want to re-name the class the item is an object of from CBar to cbar.CBar. Once I position and align it properly to check, I can go through the Form1.Designer and simply remove the cbar. and get no errors. When I run the program, it is fine, so this is telling me that there is something wrong with the movement in the class...
[Code]....
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Nov 16, 2011
I have the following code, which I use for in another control and it works fine, although the other control is a custom control that inherits from Control.
Public Class MoveableLabel
Inherits Label
Const WM_NCHITTEST As Integer = &H84
Const HTCLIENT As Integer = &H1
Const HTCAPTION As Integer = &H2
[Code] .....
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Aug 5, 2010
I used autocomplete sub in one combobox keyup.It works fine in windows xp but got an error in windows 7. The error said:invalidargument=value of '-17310416' is not valid for 'length'.Parameter name:length.(-17310416 will change based on selection of combobox)
----
Public Sub AutoComplete(ByVal cbo As ComboBox, ByVal e As System.Windows.Forms.KeyEventArgs)
Dim iIndex As Integer
Dim sActual As String[code]................
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Mar 7, 2011
I have a small project I'm working on and from time to time I show it to my friend. He and I both have Visual Basic 2010 Express installed.
[Code]...
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May 20, 2010
I am trying to export data from a datagridview which works fine, but it crashes when pat_eid value is empty, as pat_eid has been set a primary key and cant accept null values in the database level.
So, I want to enter a message box if column(0) which is the pat_eid has an empty field. Please could you advise me how to do that.
[Code]...
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Dec 8, 2009
I'm creating a db tool for automatic database repairs i have the following sql statement:
[code]...
Where the 'BrokenDbFile' is the location of the db where data has to come from and the 'sqlString' = the access statement.it gives a error when i put it in a try the exception is of type OleDbExceprion and de message text is "De instructie INSERT bevat een syntaxisfout" in Dutch Where it says that the syntax of the INSERT INTO is not correct. but when i paste the string from my inteli snce into access it works fine.
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Aug 12, 2011
Problem: The excutable of the vb program crashes when trying to run but when I step through the program inside of visual studio it runs successfully.
Details: The program performs a winscp.com transfer from a ftp server and then takes the downloaded file and extracts the data from it before sending it to a webpage. The program also decrypts a des3 encrypted file which holds the login details for the sftp server and the webpage.
My Thoughts: I was thinking this could be something to do with the excutable jumping ahead of the slower transfer and decrypt functions thus causing a "file not found" exception to be produced and the program to exit. Lending to this if I slowly (aka spend 10+ seconds stepping through the code) move through the code it works just fine.
As requested Crash Messages:(I capture everything in exceptions and exit properly so no "crash" is reported but the error I get in my logs is as follows:)
1st run with standard test case:Could not find file 'C:UsersAdministratorDesktop..ILC2INFOENC.txt'
2nd run standard case (the file above was not deleted by my cleanup function either as it could not be found)Could not find file 'C:UsersAdministratorDesktop..ILCNETSL10663.csv'
Background:The first file that is found missing is the encrypted login information file while the second file is the winscp.com downloaded csv file.
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Jun 23, 2010
I have VB.Net application that has worked fine for years on XP and Windows 7. For some reason the last update I put out does not run even the simplest VB commands.Simple Environ() fails.I have tried putting simple VB commands onto a MsgBox on the start of the app and everything raises an error. I have no idea what is going on! The exact same app runs fine on Windows 7 clients. All the XP machines including a fresh XP virtual machine with the .Net 3.5 framework even gives the errors. No VB commands are working. I thought maybe something happened to my vbproj files, so I copied an older one from a couple weeks ago when things worked fine and it still does not work.
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Jul 21, 2011
I receive this error: [code]whenever I run a query via a visual studio project in vb.net. If I run the same query via Open Office Base, it takes a long time but it works. How do I go about troubleshooting whats causing this?
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Mar 15, 2012
The code works fine when I run it locally, yet as soon as I have uploaded to our dev server it doesnt run, but also doesnt error.I did some research and found that I should have the thread impersonate the WindowsIdentity, which I have done but still the thread does not work, I also tried increasing the max threads in IIS and still nothing.Im running IIS 7.5 on Windows 2008 R2.The method being executed on a new thread is in a class in the App_Code folder and looks like:
Public Class RosterEmailer
Inherits System.Web.UI.Page
Dim thisID As String
Dim thisName As String
[code]....
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Jul 20, 2012
I tried to use bmp.save to create some thumbnail, it works fine for a while then stops working,how to troubleshoot the problem? the code doesn't generate any error:
Dim bmp As Bitmap = WebsiteThumbnailImageGenerator.GetWebSiteThumbnail(address, 800, 600, width, height) Dim ScreenshotPath As String = Request.PhysicalApplicationPath + "Screenshots" Dim ScreenshotName As String = UserAccountDB.GetUserFullNameByUserLogon(User.Identity.Name).Replace(" ", "_") + Now.ToString("yyyy'-'MM'-'dd'-'HH'-'mm'-'ss") + ".bmp" bmp.Save(ScreenshotName) imgWebsiteThumbnailImage.ImageUrl = "~/Screenshots/" + ScreenshotName
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May 3, 2011
I have created a query method for my tableAdapter in the dataset designer. I typed the command text manually, but tested it in the query builder after I got a Constraint Exception when debugging. When running in the query builder via 'Execute Query' I get exactly the results I expect. When running the application I get this exception: "Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints." I tried temporarily setting my dataset's EnforceConstraints property to FALSE but still get the same exception. I can't understand why the Query Builder would return the correct datatable but running the app would not. Is this a bug?
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Jun 6, 2012
Here's the code that I have:
TextBox3.Text = ""
WebBrowser1.Document.ExecCommand("Copy", False, vbNull)
TextBox3.Paste()
TextBox1.Text += TextBox3.Text & vbCrLf & vbCrLf 'This code just adds the pasted text from one textbox to another.
Question:
After I install and run the application on my main computer that I coded this app in work, but when I go to transfer/install it onto my laptop, the code will NOT copy and paste from my webbrowser to my textbox?
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Jun 1, 2011
We have a WCF service hosted in IIS that currently calls a VB6 DLL to do part of its job. This works fine, but we can't deploy the service to a 64-bit target environment without configuring IIS to run it in a 32-bit worker process.I am currently investigating ways around that restriction. Porting the VB6 DLL to .NET is not possible for various reasons, so I created an ActiveX EXE wrapper around the DLL in VB6, so that the service can run in 64-bit and the VB6 parts in 32-bit.
When I tested the service I got this error:
Type: System.UnauthorizedAccessException
Message: Retrieving the COM class factory for component with CLSID {9AE7303B-D159-43F6-B1A5-52D297581820} failed due to the following error: 80070005.
After some Googling I found that this is due to either:
Calling an MS Office component
DCOM permissions not being configured
NTFS file permissions not allowing read/exec access to the IIS worker process identity (ASPNET in my environment)
Of these:
Definitely not applicable Also not applicable; I am not hosting the EXE in DCOM or COM+, just a simple COM out-of-process activation
This looks likely; however, I checked the permissions, and NTFS reports that the Users group (which ASPNET is a member of) does indeed have read/exec access to the file I tried calling the EXE from a unit test fixture, which is executed in my admin-level account rather than the IIS worker process account, and it worked fine, so the error is definitely something to do with permissions. I'm not sure what to do next.
UPDATE:The IIS virtual directory is configured for Anonymous+Windows access; the WCF service uses only Anonymous authentication, the Windows authentication is for the VS debugger. Task Manager reports that the aspnet_wp.exe process is definitely running in the ASPNET account.I explicitly granted Read and Execute access to the ASPNET and IUSR_<machine> accounts on all the COM exes and dlls involved. This made no difference.
I explicitly granted Local Launch and Local Activation access to the ASPNET and IUSR_<machine> accounts on the relevant interfaces in the DCOM configuration. This made no difference either.Keep trying to get this working somehow.Go the whole hog and host the EXE in COM+.Give up. Tell users that the WCF service must be configured to run in a 32-bit app pool on 64-bit Windows.
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Jul 21, 2011
I have mpd server working in Linux machine. Code works fine until there are spaces in directory name.
How can I handle spaces?
CODE:
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Jun 30, 2010
[code]The two Location lines throw errors but the Text line works fine. I've played around with this until I'm blue in the face but can't get it to compile.
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May 15, 2012
I have one tool which we developed on visual studio 2010. there are basically two parts of my project, one is UI part which i wrote in VB and algorithm part which is in C++ on back end. When we compile C++ part it creates a .dll which is used by my front end VB program.
Now my problem is little weird since i am compiling and deploying this tool on windows xp machine but some of the users are using windows 7 64 bit machines and after running the program for about 5-10 minutes, it crashes on windows 7 with following error
Not enough storage is available to process this command and when i view details of that error, i get the following description.
See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.ComponentModel.
************** Loaded Assemblies **************
mscorlib
[Code].....
i am completely clue less for this error since this program works fine on xp but doesn't work on windows 7.
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Jun 3, 2011
So I wrote a VB.net project in Visual studio.I have a scheduled task that is set to run the program every morning at 10AM. If I use windows explorer and double click the application, it runs fine.If I open task scheduler, open the task properties, and browse to the application, then choose run, the program fails, due to Runtime exceptions.I know I have the path entered correctly, since I can debug the instance when it crashes from the task scheduler. VS2010 pulls up my source code.The exception is System.IO.FileNotFoundException, remember, it works fine when I double click the app. If attach a debugger to the process after it is executed from the task scheduler, I can then restart the debugger, and Voila!, The application runs fine.
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Nov 8, 2011
I am running a simple test app that opens an OLEDB connection, retrieves a single value, then closes. The compiled (console) app works fine, but running it from the IDE causes either a silent close (if it's a winforms app) or a crash of vshost32.exe if it's a console app.
The devenv is VB 2010 Express on Windows x64, but I have the configuration manager on the solution set to "Debug" - "x86".
Imports System.Data.OleDb
Module Module1
Sub Main()
Dim server As String = "xxxxx"
[Code]....
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Apr 19, 2011
I have a problem with a streamreader in visual basic 2008.I am updating a database from text files on an ftp server. The streamreader works fine until the file is more than 100,000 bytes long.It reads until it reaches this point and then just ends. No error message, it just reads to this point which happens to be 2 fields out of 6 in the database stream. My question is - does the streamreader have a limit? And if so what is a workaround?
Dim connString As String = "Data Source=" & pDataBase
conn = New SqlCeConnection(connString)
Dim strQuery As String = ""[code]......
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Jan 30, 2009
using VS2008, targetting framework 3.5I have a rather complex UserConrol which does some of its own rendering.I display this UserControl on a form.Opening that form in the Designer creates an instance of the UserControl in the Designer, which tells me a NullReferenceException is occurring in one of my rendering methods.I have attempted to correct this by making alterations to the UserControl's default constructor, but have not found success.
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Dec 3, 2009
I have created a custom UserControl, with a custom designer, which contains a Panel which is editable. Any controls dropped onto this Panel will go off-form when an Anchor is set. This was already reported here and acknowledged as a bug:[URL].. Are there any known workarounds? Or available hotfixes for this issue?
I already implemented ISupportInitialize in my custom panel class, where i set the docking, which doesn't help. Here's the relevant code:
[Code]...
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Jan 26, 2011
Visual Studio 2010 Windows Applications Visual Basic-- not able to resize or move controls or form with my mouse in designer window. When hover over sizing handles or form edge, cursor changes to double headed area but nothing moves. I can drag controls with mouse onto form. I successfully resized by pressing shift key and using keyboard arrow keys. I am using Toshiba Satellite L665D, Window 7 64x.
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Oct 14, 2009
See
Public Class Form1
Dim sql As String
Dim conn As New OleDb.OleDbConnection
Dim da As New OleDb.OleDbDataAdapter
[CODE]...
The problem, The INSERT statement works fine in the form load but not in the button click event?
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Oct 24, 2011
I have a small vb.net application that fires a crystal report through crystal viewer.
The report uses an ODBC connection provided by 32-bit software accounts package, which is installed in the ODBC 32-bit This all works fine on 32-bit XP and 32-bit Win7 with no problems, When run on a win7 64-bit machine the application launches ok, but when it comes to running the report, it prompts for a database logon box for the odbc connection.
When the report is run seperate on its own, on the exact same pc through crystal reports desginer it runs fine, Its almost like the application is not picking the 32-bit ODBC set up is it the case that the connection needs to be coded rather than using the report connection,
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May 30, 2010
I moved this from the debugger thread as I got no responses.This may be a better area.I have a problem enabling a Scrollbar on a custom control I have created.The custom control has one component,the scrollbar and an area that I draw upon from an internal datasource.Think something like a textbox.In certain instances,I want the scrollbar to be enabled. The Custom Control's job is to do this when the situtation is appropriate.I have a very simple piece of code here:
If <logic conditions> Then
DataScroll_vscrollbar.Enabled = False
Else[code].....
This code is in my OnPaint routine (along with a bunch of other drawing related stuff).Essentially I've determined that there is more stuff to display than the area of the control and need to turn on the scrollbar to give the user of the control the ability to see later stuff.With the exception of this funny behavior, the control is doing exactly what I want.I step through this and have a watch set.I can step through the set to True, but the Enabled value doesn't change.Even the EnabledChanged event fires (Doesn't on the set to False because it's already False), but the Enabled value is still False.I don't know why.Now here is the really interesting part and may give somebody an idea about what's happening: I can change the Enabled value via the debugger (via the Watch) to True.The EventChanged will fire, and from that point on I can set the Enabled value to either True or False and back again with no problems.
I even did some really crazy testing to see if perhaps the debugger just wasn't showing something.
did something like:
Dim idiot as boolean = false
if <logic> then
idiot = true[code]....
I have set the values to Minimum and Maximum, but the problem remains.
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Jan 15, 2010
Is there a way to make custom scollbars in listview? And could someone please show me how, step by step. I'm completely new at this
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Dec 3, 2009
I cannot move objects (such as buttons, listboxes, etc) in the Windows Forms Designer by clicking and dragging them with my mouse. This gets really annoying after a while. However, I can move them with the key pad (up down left right) and by changing the location property. Does anyone know what is going on?
Oh and I'm running vista with all the service packs and latest updates, and I don't have any viruses (scanned with MBAM, Spybot and Avast)
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May 16, 2011
I'm trying to create my own control to build a custom planning on it.After trying it with loose controls I got an error but after advice on my previous post, I redraw everything.I have now the header of the control finished, the header shows the days of the month for as many months that fit in the window.Now I want to put the list of data below it, but it will be more than the windows height, so I need to have a scroll bar that will scroll the data but not the header.I would not like to design my own scrollbar and rather use the scrollbar control for it, but when I put it in, I cannot use the NEW keyword.example:
Dim sb
As
ScrollBar
with this I get the error message: 'New' cannot be used on a class that is declared 'MustInherit'.How can I get a scrollbar on my form to scroll the list only (so not the header)?
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Jun 10, 2010
I am creating an application where I can move resize controls around and this way set up an application. I need to know how to select a control (e.g.: textbox, button...) at runtime as I would do in Visual Studio for example.Then once I could do this the next question would be how can I change the icon of the mouse when it goes onto such control?
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