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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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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Sep 16, 2009
I have Requests for VB(2005) very very important for my selly project!i need a button that determine if file exist and if that file exist then show a messagebox!and if not show messagebox!.
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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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Apr 23, 2012
I want a Code to check Database exist in SQL and Message Box Show Database Exist Yes/NO?
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Feb 17, 2011
It is saved on my desktop for easy access.I can close the program. I can click the solution to open it right back up, no problems.I then zip my file (also to the desktop)
My problem: I moved the original file (Project A) to another folder and extracted the unzipped Project A onto the desktop. When I open the new Project A's solution file, nothing happens besides VB starting up. It doesn't show me anything.
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Jul 16, 2010
I want the oppisite of
If My.Computer.FileSystem.FileExists() Then
end if
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Oct 19, 2009
I have added a .jpg file to the resources folder in my project. I then added the file as a resource so it shows up under the resources folder in the Solution Explorer. However, when I go to call the resource file in my code it doesn't show up in the list of available resources. Here is what I am trying to do:
[Code]....
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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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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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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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May 30, 2010
1) Ive put the code to execute a file, it works fine but i want a way to show a popup/message if the file does not exist instead of the typical 'Unhandles exception has occured, system cannot find the file specified.' My code is below, i dont mind using a differend code as long as it opens the file Program FilesInfinity SoftwareAeroCrash Apps11.acep
[Code]...
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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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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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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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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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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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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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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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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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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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Jan 3, 2010
I've hit a wall on POST'ing data to a webform Below is the code I've adapted from many places (here most recently: [URL]
[Code]...
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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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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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Oct 3, 2009
how to Check Exist Database in SQL And Message box Show Answer?
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Aug 12, 2011
I have class file class1.vb with 3 classes class1 , class2, class3. a class file class10.vb with class10 class11 class13
I declared class 1 public and declared a public shared new instance of class11 in class1 at the top
All classes in class1.vb can use this shared instance, but a form4.vb doesnt see the shared class1.(new instance of class11)
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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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Apr 16, 2009
How can i put a scrolling a buttons?I want a put a multiply buttons vertically and when it the control exist beyond there size of the form will automatically show a scroll bars...Is there have a control that i have to use?
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Nov 10, 2011
I'm working on this application, and I was doing the error checking on it, and I can't get the message box to show.
[Code]...
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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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