Background: I'm writing a application that will allow users to enters items on a form using textboxes, radio buttons and checkboxes. I then take each input item and write it to it's own arraylist. After the user is all done entering data the information in the arraylists will write out to a single .txt file.
View 6 RepliesI have a form that validates a users info, address, phone, etc. I want to have the form submit the data only if all of the fields are valid, but haven't had any luck. Right now the fields are able to validate but the form submits the data to the text file regardless of whether the fields are valid or invalid.
Here is my code
Imports System.Text.RegularExpressions
Imports System.IO
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
[Code] .....
How to create an if then statement to only submit the form when the data is valid. I was thinking I might have to set up a separate function but I'm not sure how to set it up really.
I am attempting to Query xml data using LINQ, then put the results into a stringwriter which uses an xmlwriter.[code] It errors with "Token EndDocument in state Document would result in an invalid XML document."Now oddly if I take the writeenddocument out the results is written first and then the writestartdocument xml.How can I create an xml document using the LINQ XML, stringwriter and xmlwriter?I was wondering if it is actually possible.
View 2 RepliesI've created a SSIS script task for debugging: printing SSIS variables and their values. This is done with (a maybe restrictied version of) Visual Basic. Rather then creating a message box or writing to a file I'd like to write to the debug output of Visual Studio - or to some other window available in Visual Studio when running a SSIS task. Something like fprintf( stderror, "Hello world!" ) in C. I suppose I need to get the Stream Writer Object connected with the debug output. But how do I do this? I also tried Console.WriteLine() but this didn't succeed.
View 3 RepliesI have two arraylists, and I would like to have a new arraylist with only the uncommon items. Is this the "best" or at least decent way to do it?
[Code]...
OK, so I am creating a bit of code that will allow me to randomly pick one "card" from a "deck", delete that "card" from the deck, and repeat. I found in all of my research that vb.net has the arraylist that is supposed to be very simple in these situations. However, when I try to populate them with a For Each statement, I only get odd numbers in the array list. What am I missing?
Dim a As New ArrayList
For i As Integer = 1 To 52
a.Add(i)
[code].....
I have two arraylists that contains links in one and the root url in the other. Sometimes the lists dont equal in number and I would like to iterate through the links list and if it contains a matching root url add it to a third list but also avoid any duplicates. I tried this but am not getting consistent results.
For Each link As String In urls
For Each part As String In post
If part.Contains(link) Then
[code]....
Perhaps there is another way; basically the part in post is a link to a page and contains the root url( which is link in urls). After extracting all these I need to ensure the 2 lists match.
I was trying to use ArrayLists with My.Settings but I can't seem to figure out how to get them to work.If I make a setting called "Words" and make it an ArrayList without a value, the program has an error every time I try to run it. If I try to give it a value in the project properties window it always gives me an incorrect data type error. Besides, I don't want it to have a value, I want it to be blank such as when declaring a New ArrayList. The only way I can get an ArrayList My.Setting to work is by clicking in the Value box, clicking the "..." button in the corner and adding some kind of Object with the add button. This automatically puts some kind of wierd object in the first index of the array list. If I don't convert Item(0) of the arraylist to a string then it also gives me an error when I try to read it. As a string it comes up as System.Object. Even though I can use the my.settings.Words ArrayList with an object in the first index, how can I get the setting to start off blank without having to constantly avoid the first index?
View 10 RepliesI have been tempted to use List(Of T) in VB.NET instead of ArrayLists by someone-who-must-not-be-named-Robinson.Essentially, what I need to store are three things: One string, two integers, and maybe two booleans. I liked using ArrayList, because it treated all its elements as "Objects" so I didn't really have problems storing that variety of elements.But now I have been thinking on using List(Of T). But how do I do to store that variety of elements of mine? I have been thinking on making a Structure holding the five elements.Sounds like a good idea? I heard somewhere that Structures are expected to have a short life. But I fear I will be having my structures for... forever, as long as my app lives. That makes any difference? Finally, what if I needed to create... dunno...... 125000000 Lists, each containing a structure? Is that possible (and good)?
View 2 RepliesI have two array lists
dim Colors1 = New ArrayList
Colors1.Add("Blue")
Colors1.Add("Red")
[code]....
I would like to find out which colors are missing from Colors2 that are found in Colors1
I have three arraylists (datasets and subsets) that I need to combine into one arrraylist so I can databind it to a repeater control and then present data to the user. As far as I know, you can only bind the repeater with one datasource (please correct me if this is wrong) that's why I'm combining these arraylists.Each arraylist has an ID from the database which I can use as a datakey to keep the data aligned. How do I combine these lists?
View 4 RepliesI have searched high and low for a solution yet still no luck, I have two arraylists populate with FileInfo and I want to compare the two and write the duplicate (matching files) to a listbox.Here is how I have populated the arraylists but in terms of the comparison I have not found anything that works:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim arraylist1 As ArrayList
Dim arraylist2 As ArrayList
[code]....
What can I do next to compare the two and write the duplicates to ListBox1.
I have two arraylists that contains links in one and the root url in the other. Sometimes the lists dont equal in number and I would like to iterate through the links list and if it contains a matching root url add it to a third list but also avoid any duplicates. I tried this but am not getting consistent results.
[Code]...
I am trying to convert an algorithm to use them in order to save memory. However, I am struggling to achieve error-free code while using "Strict On".
Here is a basic version of the code I am attempting to use.
Code:
Option Explicit On
Option Strict On
Module Program
[Code]...
It works when I do not use the Strict option. How do I improve the code to compile error-free?
I have two arraylists that contains links in one and the root url in the other. Sometimes the lists dont equal in number and I would like to iterate through the links list and if it contains a matching root url add it to a third list but also avoid any duplicates. I tried this but am not getting consistent results.
[Code]....
I've got three arraylists of strings, and the "091: " part of the string is not part in the arraylist, thats added when I display them in the listboxes. So basically, how can I sort a list, and make sure that item nr 98 in english, still equals nr 98 in japanese and kanji?
View 11 RepliesI am obviously not understanding something about scoping that is very basic. I have a very simple class:
Public Class testListClass
' This just contains a single list that is set by a property or the constructor
Private classArrayList As New ArrayList()
[code].....
I did this before, but i totally forgot how to do it.I have an array, the array contains strings with 2 seperators.like so:
name1 / name2 / name3
Basicly i want name1, name2, and name3 in 3 seperate lists, or arraylists. But, i don't know how to do it.Each line is being read from a file.
So I need to write out an object to a text file as well as read in objects from text files.How do I accomplish this? This is the code i've used to read and write just simple lines of text. Is there a small modification to this or just a different function i use to read in an entire object?
Code:
Dim path As String
path = "Security.txt"
[code].....
I have just recently been using VB 2010 after using VB5. I have noticed a lot of changes. The problem I have is that I wish to open and save text files to and from arrays in the background. I've attached what I would do in VB5. I have searched around, but all the examples I find use a Textbox instead of an array. Can anyone show me how I can do this with VB 2010?
View 1 RepliesI am creating a text file using a save file dialog and copying the path to the text box which file is used to write from vb.net. when i try to write i get an error "The process cannot access the file '....fileName.txt' because it is being used by other program".
The code is below
Public Sub writeInTextFile()
Try
Dim oWrite As New StreamWriter(TxtOutputPath.Text)
[Code].....
I am attempting to gather a group of file names from a directory. I am able to do this. I tested the code by having the list populate into a listbox and all desired items were added to the list.
Here is my code:
Dim di As New IO.DirectoryInfo(strPath)
Dim dir1 As IO.FileInfo() = di.GetFiles("*.txt")
Dim dFiles As IO.FileInfo
ListBox.Items.Add(dFiles)
However, a listbox is not my desired output. I am attempting to write these file names to a text file for purposes of then parsing the information to a datatable to compare with another datatable. How to get my filenames written to a textfile.
I am working on a program using VB.Net 2010 which will enable me to setup groups of files & folders for back up with syncing capabilities etc. I have a concept program which is based on some sample code I found out in one of the VB.Net forums. I have modified it from a command line based program to a form based program. At the moment I consider this code to be a "concept" program which once I have the various copy/sync routines developed and debugged will be integrated in to another program I wrote for
creating "Back Up" groups to automate the process. There are some 3rd party programs that do similar things that I want to do such as Microsofts Sync Toy, but none of them offer the grouping and exclusions options that I am going to program in to this backup/sync program.
So here is my problem, I have the included code taking two folders, a source and a destination, and copying everything from the source to the destination. It will skip over any unchanged files/folders and will delete anything found in the destination folder that is not found in the source folder and it will update all files in the destination folder that have a newer version in the source folder. In other words it will mirror image the source to the destination but will be smart enough not to copy unchanged items from the source to the destination thereby saving a lot of time. The sync part of the program is working fine, the displaying of the progress and results is not.
[Code]...
I have a structure in memory which is working fine - now I need to write this entire structure to a file.The below code almost compiles, the problem is that "mstaRecordInfo" cannot be changed to a string, probably because of the Date field. I've just spent over an hour experimenting and searching the web but have gotten no closer to a solution
[Code]...
I am trying to print the contents of my array to a text file, but instead of just printing whats in the array it prints all indexes even if they are empty.
this is the code i am using..
Code:
FileOpen(3, "garbage.txt", OpenMode.Append)
Dim intCounter As Int16
For intCounter = strFirstName.GetLowerBound(0) To strFirstName.GetUpperBound(0)
[Code].....
for a school project I have to write data from a listbox to a new file that a user can create. I can create and save a file no problem, but for some reason I can't write anything. I followed the textbook provided but when the file saves, I open it up and it is blank. I'm using fileWriter.WriteLine and I'm just test something basic to write to a file first and I can't do it:
Code:
Private Sub storeFileButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles storeFileButton.Click
'creates a new file
Dim result As DialogResult ' stores the file
Dim fileName As String ' name the file to save the data
[code]....
Well I'm in the middle of making a program to edit .ini files. Although I have hit a snag. I can save my settings (relies off checkboxes) with ease, however if I change something and/or hit the save button again even after the code has finished, both my entire .ini files are cleared (filePath and filePathPrefs) and all text is gone. Here's my
[Code]...
why it's clearing the .ini file even after the initial write worked? I've tested to make sure the entire code has finished before making another save with different settings but the issue happens again.
Okay im trying to write a TXT file, but also keep the contents already in the file.
For example
Before Program Run:
Sample123.txt reads:
[code].....
What I am trying to do: There are three powershell scripts with different time delays as shown below.I am trying to run them asynchronously in .NET and I followed this article to implement Asyncrhonous programming. Where I am stuck:The I am not able to retrieve output after the events are invoked.The scripts are being called but then the program ends and it shows "Press any key to continue" in console windows.I don't what I am missing here.
Info: JobRequest is a class that I use to pass around information keep track of jobs.
Sub Main()
OurAsyncFunctionCalling("psDelayScript2.ps1", "-arg1 4 -arg2 5", 1)
OurAsyncFunctionCalling("psDelayScript1.ps1", "-arg1 2 -arg2 3", 2)[code]......
I am new to programming and I am developing a simple application to convert a text which is made using SSML to a audio file,for a personal task. When I use the function
SetOutputToWaveFile or SetOutputWToWaveStream, the file can be created and played using media player, but there is an error in the file. When I use the function setOutputToAudioStream, The audio file can be created, But it can't be played with any media player.[code]...