I'm wondering what would happen if my program was used say, on a computer with a chinese keyboard? I assume the text box controls will be fine, but sometimes I compare english strings.. such as "!" and "@" and a few other things.
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how to make a button get clicked when a key is pressed. The key I want to press is ctrl and I want it to press Button1.
View 5 Repliesi'd like to know how to make an event happen when user presses a key ... let's say space or whichever...and the other thing - how to display a folder on my hard disk ("E:Music") in a ListView box in my program?
View 1 RepliesI have a web application that works in our stage/test environment fine but once we moved it to our production environment something weird happens. All the control ids change. a label went from ctl00_cphMainContent_lblPetName to _ctl0_cphMainContent_lblPetName. Why would this happen? What could cause something like this to happen. The only two differences I know of are the production environment has HTTPS and I've disabled debugging.
View 3 RepliesCurrently all my application that is released is always release in production. However I would like that changed and also have a development side (For testing).
I've tried searching for steps on how to create a development server however I cannot seem to find a tutorial.
In the past I've seen someone release their application in development by having it in on "Debug" option and have it released in production by having it on the "release" option. (I apologize for the vagueness as it was along time ago since I saw it).
Here is the error:
System.Runtime.InteropServices.COMException, Paste, Exception from HRESULT: 0x800A03EC
All machines are Windows XP with the same version of Excel (2003). Some machines get the error, some don't. We have yet to find a pattern.
Here is the code:
Public Shared Sub ExportToExcel(ByVal dt As System.Data.DataTable)
Dim app As New Microsoft.Office.Interop.Excel.Application
app.Visible = False
[Code].....
Will LINQ's parallel extensions automatically detect the number of cores and utilize them all? Conversely, if the code is run on a single core machine, will it still work or do I have to detect the number of cores and tell PLINQ how many to run across? I don't have access to any single core machines to test my code on so I can't even test this for myself and I haven't been able to find any useful info elsewhere...
Also, while it might at first seem obvious when to use parallelism, are there any rules of thumb regarding where it should and as importantly should not be used? I don't necessarily program in a specific environment. I tend to divide my time somewhat equally (depending on project) between web, client/server apps, windows apps, windows service and console utilities depending on the task at hand.
What will happen when 3 function calls same function at a time? I have 3 Function, f1,f2,f3.. Those function after completing their task will call finish() function. What will happen if Finish is Called morethan once..
View 9 RepliesI am developing an application in Vb.Net 2005 and have enabled the installation by clickonce, the update occurs before the application starts. My problem is very simple, the server that contains updates is correctly natted to be available from the outside with a public IP.
The clients who access from an external network connecting without problems, download software and updates. When local clients are connected to the same network of the server (LAN) can not download anything because they try to access the server with the ip public, and the nat does not work . We can not perform operations on the DNS server or hosts file and not even on the router.
I need to figure out if i can use ClickOnce to use more than one distribution server, primary and secondary. I'd like to set as the primary server the public address and the secondary server with internal network ip address.
After developing using the Excel Interop with .Net for a while, i have become increasingly annoyed with the how many "odd things" happen - such as this question i posted earlier.
View 6 RepliesHow to know if theres a changes happen in database?
View 10 RepliesOk lets say i have a textbox with five ones. How do i make something happen for every 1 in the textbox?
View 2 RepliesI have a form with seven tickboxes - one for each day of the week - each one saved in my.settings.monday, my.settings.tuesday, etc Now I need to check if something should happen today and the code I'm using (below) seems very longwinded. Can anyone help 'tidy it up'?
If Now.DayOfWeek = DayOfWeek.Monday And My.Settings.monday = True Then
'do it
End If
[code]....
what MSDN is trying to indicate here on this tutorial, ref this page: Walkthrough: Creating a SQL Server Express Database.I cannot make this happen in VS2008 SQL Server 3.5 ? To create a relationship between the tables created in the previous step 1.Right-click the Database Diagrams node in the SampleDatabase.mdf node in Server Explorer/Database Explorer and choose Add New Diagram.
2.Click Yes if a dialog box opens asking to create the required database objects for diagramming.
3.Add the Customers and Orders tables to the diagram.
4.Close the Add Table dialog box.
5.Drag the CustomerID column from the Customers table onto the Orders table.
6.Verify that the Customers table is the Primary key table and the Orders table is the Foreign key table, and verify that the CustomerID column is selected for both tables.
7.Click OK to close the Tables and Columns dialog box.
8.Click OK to close the Foreign Key Relationship dialog box and create the relationship.
9.Select Save Diagram1 from the File menu.
10.Leave the default name and click OK.
11.Click Yes in the Save dialog box.
I can create relationships but not the Diagram ?
I get the following Error: when Using The program ... Didn't Used to happen before ...
This Is the Source Code :
Form2
Form1
I Have tried Different Stuff But none of Them work.
Strange problem: This code gives the appearance the I have 'Split' 1 button into 2 (B -> B(1) & B(2)) and then can 'Join' them back(B(1) & B(2) disappear and B returns). All this works fine, 'cept when I try to declare the only container where this can happen. The 'Control-S' part works as long as the lower portion is commented out, when I uncomment the lower portion 'Control-J' neither part works - the code skips down to the msgbox -
If e.Modifiers = Keys.Control AndAlso e.KeyCode = Keys.S Then
If DirectCast(sender, Button).Parent Is flp1 Then
MakeButton(sender.text & "(1)") 'sub that makes the button passing the text thru
[code]....
I have a website that i've been working on for about a year now.Recently, it's started throwing System.AccessViolationException every now and then, in my dev machine, mostly, when I was away from the machine.I haven't changed anything on the server code in weeks, since I've been working 100% on the Javascript part, and this error started appearing recently.
Also, the code I'm doing is 100% managed. I'm not doing any interop, calling strange DLLs, nothing. It's pure VB.Net, so I don't see how I could be generating one of these myself.Now, I've been using this new machine for a couple of months, and it's not working 100% right. Every 2 or 3 days I'm getting a blue screen for example. I haven't had time to diagnose it properly, but I'm suspecting I may have a faulty RAM chip.
[Code]...
how to make an event happen when user presses a key ... let's say space or whichever...and the other thing - how to display a folder on my hard disk ("E:Music") in a ListView box in my program?
View 7 RepliesI have created this user control.
Imports SAAQ.Utl.W00692BaseControle
Imports System.ComponentModel
Imports System.Web.UI.WebControls
Imports System.Web.UI
[code]....
However, the method Button_Click is never called when i click on of the button thatt his method handle. The specifics events arent raised.
I have made 2 application server/client. I want to remote the client from server for example if I press 1 then one action should happen in client, if 2 then another action should occur. How can I do it? I think I should use select statment
Select case a' a dim as integer
case Keys.1
frmmain.axwindowsMediaPlayer1.ctlcontrol.play()
end select
is this right ?
I'm attempting to create the sending path files from each rows of Datagridview to USB removable Drive. Below the code i''ve got from Shanks it's just show the name of usb drives but when i clicked on sendto not work.
[Code]...
I'm beginner on VB 2010 and I wanna write an app that can downloads file My question is: If it gives me 404 or 403 or whatever, I wanna let the app ignore that message, instead of a webexception error Note: I've already know how to download file with VB
View 2 RepliesI have this function I put together with help online and it works just fine until the program runs over night. I don't think it is night time that is the problem, just the long run time. I take bitmaps and place text on them then convert them to icons so that the image can be used on the system tray.
[Code]...
A few years ago I have been busy creating this application but it didn't succeed, now Im coming back to it and similar problems occur. Basically I use SetPixel on a given window to draw a line, work fine, but the line goes away as the window redraws itself.The problem: I have been putting timers and threads on it to make sure the line is being drawn. Is there any way to make a loop to make a certain thing happen about 10-30 times without taking in too much memory/CPU?
View 7 RepliesIf NewEntryName.Text = "" And OpenFileDialog1.FileName = Nothing Then MsgBox("Please choose a name for your game.", vbExclamation) MsgBox("Please find your game.", vbExclamation) Else Button1.Text = NewEntryName.Text
[code].....
I'm calling the following method from a button click event to export a datatable to excel. After the export is completed, the excel application object is quit, released and assigned to nothing. But in reality it's not getting released and stays active unless the entire application is closed. So every time the button is clicked for export, a new excel application object keeps on running. The problem doesn't occur if two of the lines from the method below are not used. But I can't omit them as they are really needed. Check the * marked lines.
Code:
''' <summary>
''' Exports data from a datatable to excel.
''' </summary>
[code]....
How to change the frame rate in Visual Basic 2008 Media Player? I have error: System.NullReferenceException was unhandled Message: Object reference not set to an instance of an object. IS there any way to fix this? Here's My Code
[Code]...
Where in Visual Basic 2008 Express Edition Software program do you specify a specific installation directory for a program?
c:Program Filesfinished program
I want to publish my program to try it out on another system and I want to ensure its installed in the directory structure I want.
i'm running Visual Basic 2008 Express Edition (latest service pack ... 9.0.30729.1 SP) on XP Pro SP3 with .Net Framework version 3.5 SP1 I have a rather large project I've imported from Visual Studio 2003 (Standard).The project compiles and runs just fine ... my compiled program itself never crashes.
But while I actually have the code up in the IDE, and simply adding/deleting code the whole IDE will randomly crash (usually without warning) and I loose my changes since last save.If/when I do get some hint of why it crashed, I get a window about illegal whitespace or something.... but that's rare ... usually it just crashes without warning and the whole IDE completely shuts down instantly. just deleting/adding a character is enough to trigger it maybe once every 30 minutes.
This is on a computer that is otherwise very rock solid .... no other program ever crashes, etc.
Is it possible to edit the Windows Form Designer generated code in VS2008?
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