Can't Set Flag Of A Class That Doesn't Exist

Jul 17, 2010

I have a Windows Form in which I started two threads and then close the form and threads continue their works. How can I abort first thread when the second thread stops?I made the first thread IsBackground,but the second thread is not the only thread of program and the first thread is started in another thread(form) that is closed and not exists anymore,in addition I can't set Flag of a Class that doesn't exist.

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VS 2010 - Picture Viewer Should Show A Flag And The Students Must Type What The Flag Is In A Text Box

Mar 26, 2012

with a college assignment. We are to make a program for a school class. It is on Flags of Europe. A Picture Viewer should show a flag and the students must type what the flag is in a text box. If it is correct it must say so in a label and display the next flag. I want it to add the correct answers the student got out of 10 flags.

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Tell If Something Doesn't Exist?

Jul 16, 2010

I want the oppisite of

If My.Computer.FileSystem.FileExists() Then
end if

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Set As StartUp Project Doesn't Exist

Jul 4, 2009

I have been trying to build the "Testing a class lesson, but the Set as StartUp Project line in the Project menu does not exist! I have redone the entire project 7 times, always the same response! # different computers, all with registered versions of VB. Why does this problem persist?

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WindowsFormsApplicationBase Doesn't Exist In C# Namespaces?

Nov 1, 2010

i read that WindowsFormsApplicationBase, is in the Microsoft.VisualBasic.ApplicationServices namespace

Do I have to really add the full-blown Microsoft.VisualBasic.ApplicationServices just to get WindowsFormsApplicationBase in c# ? What's the consequence on the size and performance of my c# app if I do so ?

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Control Doesn't Appear To Exist In .NET 2008 Express?

Feb 27, 2009

It was there in VB 6. I have some images that I'm going to use a buttons, and I did this in VB 6 with the image control. however, this control doesn't appear to exist in VB.NET 2008 Express. I guess I could use a picture box, but isn't that overkill for such a simple task?

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If File Doesn't Exist Then Form4 Show?

Nov 14, 2010

when people first run my program (as in the FIRST EVER time they run it), I want a window to popup (Form4). In this Form you have to locate a directory to a certain program (my program uses this program) and press OK, and then that will generate a .txt file with the directory to the program. (So that my program knows where that program is located.) Now, what I want it to do is when you open up the program, upon load (Form1), I want the program to check if that text file (directory.txt) exists. If it does and the path in the file is correct, the program will run fine. If the text file is missing and/or the directory doesn't exist, it will bring you back to Form4 (assuming that this is your first time running the program since the directory.txt file doesn't exist).

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Message Box To Show When Username Doesn't Exist?

Jul 4, 2009

I want a message box to show when a username doesn't exist. I figured this would work but an error shows saying 'FileNotFoundException was Unhandled', for the fist line.

Dim UserFile As New System.IO.StreamReader(sPath & "" & UsernameBox.Text & ".txt")
Username = UserFile.ReadLine
Password = UserFile.ReadLine

[Code].....

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Programmatically Add Event Handler If It Doesn't Exist?

Oct 28, 2009

I'm trying to use a single event handler for several controls in an ASP.NET web page. I would like to add the event handler at runtime if and only if it doesn't already exist. In C#, I would write it as seen below:

if (myTextBox.OnTextChanged == null) myTextBox.OnTextChanged += DoTextChangingValidation;
Likewise, I know I can remove the event handler as follows:
if (myTextBox.OnTextChanged != null) myTextBox.OnTextChanged -= DoTextChangingValidation;

[code].....

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Registry Key Error If The Folder Doesn't Exist In VB

Dec 8, 2011

I am trying to add a registry key in to the file "MyApp" which doesn't yet exist in the registry key directory, when I try and write this key however I get an error from the debug console telling me the "NullReference was unhanded". If I go and manually make this folder it works brilliantly, I thought that this code would make the folder as well?

[Code]...

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VS 2010 Remove From Listbox If It Doesn't Exist?

Mar 7, 2011

What i need is, if a item in a listbox Doesn't exist, it needs to remove it from the other.

In the pic i have attached. Basically If it doesn't exist in Listbox2 then it needs to be removed from Listbox1 and tell the user which one has been removed.

i.e Test 02 doesn't exist. So messagebox would show "test02 has been removed" then remove it from listbox 1

It probably something simple thats sitting in the back of my mind, but for the life of me can't figure it out lol

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Adding Datagrid Using 'Additional Controls' Doesn't Seem To Exist

Jan 16, 2009

I'm copying code from one VB project to another PC but the 'datagrid' on the copy insn't inserting into the new PC. When the form loads the datagrid is missing. The error I got was that there was something missing from the machine. When I tried to add the datagrid using the 'Additional Controls' it doesn't seem to exist. Any chance I can download the control? The version of VB is 6.5 and its part of a graphics package I'm using.

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Connexion - Error Indicates That The Name Of The Field Doesn't Exist Or Is Not Well Written

May 6, 2012

Mine is a simple conexion problem but I dont understands what's happening I have another form in the same project which has no problems at all, I desided to create a form to use it as a base form named plantillav only to duplicate forms and intance the others from that one I put it's Modifiers Property = Protected in ortder to modify property values in the other ones I don't know if the process generated a failure.

I created the following strconn:

Public

Class
clientesc

[CODE]...

This table was exported from phpmyadmin (wamp) so it means is created and even with registers inserted directly from console, the problem is when I send from the application, with the following error that indicates that the name of the field doesn't exist or is not well written; Unknown column 'code_empleado' in 'field list'.

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Inputting Login Info That Doesn't Exist In The Database?

Dec 4, 2009

In this code block, the datarow gets the row number of the username that was used to log into the system with, right? And in this code, if there is a username/password that was matched with in the database, it'd place it on the dbUsername/dbPassword variables and compare it with the ones that were inputted by the user.What if I wanted to know if there is none of that username (like, username doesn't exist from the database)? I tried inputting login info that doesn't exist in the database and it resulted into the following error:An unhandled exception of type 'System.IndexOutOfRangeException' occurred in system.data.dll

[Code]...

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Shockwave Flash Object Doesn't Exist In COM Components?

Feb 9, 2010

I am trying to import a flush component in a Form but in Choose Items... in the list of Com Component, Shockwave Flash Object deos not exist.

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Writing Code For Controls That Doesn't Exist Until Runtime?

Dec 18, 2011

Im developing a program that adds any number of tabs for each directory that contains user specified information and also adds a list view control on each tab that shows the files contained in said directories. I want the user to be able to double click a file in the list view(s) to open it.

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Generate An Error Message To The User To Let Them Know A File Doesn't Exist?

May 10, 2010

im trying to generate an error message to the user to let them know a file doesnt exist.So far ive got the user to enter the file name into a textbox, they click search and if successful will load a new form with a PDF file reader built in( AxAcroPDF1 )everytime i enter the right file name i get the file loaded, if enter the wrong name the File page still loads with no pdf and no message saying file doesnt exist.

Private
Sub PictureBox1_Click(ByVal
sender As System.Object,
ByVal e

[code]....

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Make Default Opener For .txt Files - Seems Like The .exe Of My Installed Program Doesn't Exist

Mar 4, 2012

I have recently published a simple text editor(just as an exercise). the editor has been published using Microsoft Visual Basic Express. Once the program is installed i wanted to make it a default opener for .txt files, so i clicked openwith ->Choose default program and then i was asked to show the location of the .exe. It seems like the .exe of my installed program doesn't exist. where the .exe is on a windows7 or tell me of another way of makeing that program the default opener.

Here is the link to the publish page: [URL]

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[2008] Memory Read - Stop This Code If The Address Doesn't Exist ?

Jan 14, 2009

I have got some code that is working as i have edited the game.exe at a certain address, now i know the code can find the address, but I don't know how to make it stop searching for it if it isn't there.

here is the:

code:

So what I want to know, is how to stop this code, if the address doesn't exist.

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Check If A Function Exist In A Class In Vba

Oct 21, 2009

the way i could use VBA to check if a function say function1 is present in class1. if the function is present display 1 else display 0.

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VS 2010 Setting Control Events To A Control That Doesn't Exist Yet

Jul 23, 2011

I am looking how to set events to a webrowser which is being created by the following:

[Code]...

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Create An Application Autoupdate - Check In A Webserver If Exist New Version,if Exist The Software Run Update

Dec 21, 2010

I try to find online any example for create an application autoupdate.

When I run my application it check in a webserver if exist new version,if exist the software run update.

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VS 2008 - Class Doesn't Work

Aug 1, 2009

When I use this

[code]...

But for some reason, it doesn't place the image into the picture box.If I use this, and replace it with the first box of code, then it works fine.

[code]...

So, why doesn't it work in my class?

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Class Library - Progress Bar Doesn't Fill

Jun 21, 2010

Ok, I have a usercontrol in a Class Library Projects which contains a Button, 2 Listboxes, and a Progress bar. My code is to look for a file and if its there post to one listbox and fill in the progress bar and also put the programs current task in the other listbox. Recently, I started using VB.Net 2010 Express and wanted to turn part of a form into a .dll so it would be easier to update. I started getting a error and had to declare a variable as a New instance of UserControL1 (my user control). When I did this, the control would run, but the Progress Bar doesn't fill and neither of my listboxes show anything. What Should I do?

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Converting Object To Class Doesn't Work

Jan 9, 2011

I am using VB.NET 2010.I have a Queue to save different data (which all come from a class of mine) as FIFO Now, I want a Function to count the saved classes in my Queue, but this isn't working

My Code look like this

Private
Function
QueueSum(ByVal
myQueue As

[code]....

TryCast seems to be wrong. - because the Intelli Sense tells me, that "SATZ" isn't declared.

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Passing Class ByRef Doesn't Act Like Expect It To

Dec 31, 2009

This is the code:

Public Class userDefClass
private b as integer = 1
End class
Public Class Form1
private SomeClass as new userDefClass
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) [Code]...

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Namespace Of "system.runtime.caching" Does Not Exist But In Object Explorer And Microsof Exist?

Nov 25, 2010

namespace of "system.runtime.caching" does not exist but in object explorer and microsof exist.i use microsoft visual studio 2010 and .net framework 4.0.i also cant use this name space(System.IO.MemoryMappedFiles & System.Runtime.Caching.MemoryCache)

any body know what is the problem. i want my program after doing something (opening a file or any thing that can do something my program use more memory.)use memory like startup run.

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Rich Text Box That Does Not Exist Yet In A Tab That Does Not Exist?

Jan 16, 2011

Here's my code:

Option Infer Off
Option Explicit On
Option Strict On
Public Class Form1

Public Sub NewToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles NewToolStripMenuItem.Click

[Code]...

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Why Doesn't XmlSerializer Work For Shared Class Variables

Dec 8, 2011

I have the following class which I want to serialize to XML:

[Code]...

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UI Doesn't Update Where Changing Properties From A Different Thread Specified In A Different Class File

Oct 5, 2011

I have a problem with this program

Form1.vb
Imports System.ComponentModel<br/><br/>Public Class Form1
Public Delegate Sub updatePB(ByVal value As Integer)
Private bgworker As BackgroundWorker = New BackgroundWorker

[code]....

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