VS 2010 - Storing Text Data In File For Program Use
Jun 28, 2011
Here is what I would like to do:
- Store string data from a 'sign in' form into a text file. This text file must be one that is saved even after the user exits the program. The text file must also be one that will stay with the program even after it is published (executable).
- Be able to write to/read from the file for purposes of displaying some or all of that data on a form.
I use an Application Setting to do this - of type 'Specialized String Collection'. I tried this, but for some reason I could not get it to work. It was a good idea, but I need to be able to SEE the data that has been saved, and with a setting it seems like that is not easily done. I've decided that I either need to use a simple text file or a 1-table database for this. I would prefer just a text file, but in either case, it needs to be part of the .exe when published.
I have added a text file to my project, but I am not sure if it will be "included" in the project when I publish it. The path of the file I've added is in 'My Documents', but in my code, I will have to specify the path in order to use Streamwriter. How will this affect the program when I publish it? I felt the need to make a new thread because on my last one we had been mainly talking about settings, and I've decided that isn't the best option for me.
In the program I'm working on, there is a 'sign-in' form that pops up for the user to enter first name, last name, and DOB. What I want to do is STORE that information in a text file for FUTURE use by the program (i.e. displaying a list of all previous users of the program).I already know how to use streamwriter to write text to a file, but I would like for the text file to be stored within the program files and also for a new user's data to be appended to that file every time.
Do I simply add the text file to the project files? When I do that, its path is 'My Documents'. How will that affect the program when I publish it? I guess I just don't yet understand what happens when the program is finished and published. The code for the 'Submit' button on the sign-in form is pasted below. At the bottom, I've put a comment to indicate where I want to store the data to a file.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim TxtBox() As String = {TextBox1.Text, TextBox2.Text, TextBox3.Text} For i As Integer = 0 To 2 If TxtBox(i) = Nothing Then
I'm rewriting a legacy application in .NET. In the earlier version, I used a few control .INI files that could be edited by the advanced user to provide variation in certain program options. (The program also permitted override of these same variabes via menus and such.) I used the API functions to read the .INI files and rewrite them to alter the user's environment for subsequent runs.
I am trying to store 8 separate pieces of information in a text file (like a database) [but not a SQL database], consisting of integers and strings. How would I use an array to do this? Will an array collect data from text boxes (I also want to display the 8 pieces of information in separate boxes). also how would I save the text file so I can open it again or open a different text file (database?), from within the program?
EDIT: I see I need to use readline and writeline to read/write from a text file but how would I find specific data to show in my boxes?
I have an ArrayList that stores 100,000+ numbers inside of it. Each number is 10 digits in length or smaller. The program itself has data input into it, of which it loops through the user input to see if any of their numbers are already in the array using if ArrayList.Contains(userinput).
It would appear that when having an ArrayList of this size a LOT of memory is being used. Would there be a faster way to run this, E.g. Database or If TextFile.Contains(Line)?
There are "text" files, there are databases, I used to use a record (now called a structure) in a ".dat" file, but I'm having trouble finding documentation support in vs2010. So I'm thinking maybe it's time to move up to ... ? databases? ".txt"s? The current app I'm trying to write will only have a couple of hundred "records" at the very most; Old vb6 command like LenB which would return the size of a file in bytes is no longer, and I can't find how len( .."as byte" of file) would actually be implemented. len( <filename>, as byte) isn't the correct syntax - what is?
Is there some thing less dramatic than a full blown database? Or getting used to how a database uses SQL and all that goes along with that shoud be something to get handy with?
What is the easiest method of storing data and retrieving it using VB? FYI, I have not used Access before. It will be a movie database that stores title genre, etc. I thought about using a text file but i think thats crude and ran across this site:
I have data that I want to store in some type of variable where I can easily access when needed. For example I have: google.com -> This is a cool website. yahoo.com -> News website gmail.com -> Mail website
I want to be able to store those in some type of group so if I go like: get data of google.com without going through a loop.
What I'm trying to accomplish is first of all, adding items in a list box, but while doing so, store data into that item so when the user clicks on it, the data will be brought up into the correct text boxes.
My idea on how this will all work out has to do with array lists. I'm thinking each time an item is added to the list box, an array list is generated containing all the data from the text boxes. The array list would be named as the text of the list box item.
So then when the user clicks on one of the items, it can find that array list easily because of the selected index, and then update the text boxes with the data.
Is the way I'm thinking of possible? If not, or if there is an easier what, what would that be?
I've been searching around these forums for quite a while now, and can't seem to either understand or find what I'm looking for.I have a text file, that my program is always adding to it, it's format is like so:
Line 1: UserName (For User 1) Line 2: FilePath (For User 1) Line 3: UserName (For User 2)
I am using VS 2010 and I want to read the Text File values and place them into variables. This is my code Me.OpenFileDialog1.FileName = Nothing If Me.OpenFileDialog1.ShowDialog = System.Windows.Forms.DialogResult.OK Then Me.TextBox2.Text = Me.OpenFileDialog1.FileName filename = Me.TextBox2.Text End If [Code] ..... I am unable to move pointer to next line.
MSDN only discusses strings, images, audio, etc.. but does not cover text files.
I have a text file with about 6k lines of short strings, each on its own line, added to my project's resources and I'm trying to .add each line to a collection. I've tried about 7 or 8 things, not all using StreamReader, but I can't find documentation on this anywhere.
Here is the last thing I tried:
Dim JunkStrings As New Collection Dim sr As StreamReader = New StreamReader(My.Resources.shorts) Do While sr.Peek() >= 0
[Code].....
I just can't find the equivalent to this that reads lines from a text file out of my.resources.
My xml files were looking a bit clumsy when i read them, what i have done now is to save them in the xml in this format:
vb.net <field>{value1|its partner value2}</field>
i noticed {|} this is the format that vb.net uses for arrays, i was wondering if that's an ok way to store things, on retrieval once i get the node value, what would be the best way to break up the {value1|it's partner value2} variables to use, explode the | and get parts (0) and (1)?
I have an application that gathers data from a SQL database that is used by a 3rd party helpdesk application.My application is pulling out information of the number of hours worked by each engineer for the current and previous 2 months.Also as part of this process, my application works out the target hours for each of those months.
My application has 3 groupboxes whose label is generated at runtime. My application gives the Groupbox1.text the name of the current month, Groupbox2.text the name of the previous month, and Groupbox3.text the name of the month before that (e.g. Mar, Feb, Jan).
What I am trying to do is have 2 text boxes for each month where I can enter the number of engineer holidays taken and the number of public holidays if any. I want to store these values in an XML file, and I guess they need to be stored to match the Groupbox text (i.e. Mar, Feb, Jan).
When the application starts, I need to parse that XML file and re-populate the text boxes with those number of days - BUT if the month has moved on, so that the Groupboxes are now called Apr, Mar, Feb then I want the Mar and Feb data to be loaded, and I want the XML file to be updated so that Apr is added and Jan is removed from it.I want the XML file to keep the current and previous two months figures only.
I'm trying to read data from a text file with multiple records and fields separated by tabs to store into arrays, which I later want to output into a textbox on the form. The problem is that with the code I've written, when I debug it it exits the sub procedure when it enters the first loop where the parser is reading the text file. There are no error messages, it just exits? I'm not even sure if what I've written is possible. Here's what I've written so far:
I have a simple byte array: Dim TheBuffer() As Byte={0,1,2,3} and I want to store it to a TEXT file. Is there any simple way of doing this? I want to enter the text file and see the array 0,1,2,3. don't want binary format etc.
I want to make a program that looks like an address book (name, birth date, phone, e-mail etc) and stores all the persons data in a txt file. If I add a new person, for example, it will be added after the last person that was added in that txt file.
I created a simple database and I want to learn how can to store my data in it so if I uninstall my application. I can protect the data from deleting then I can use it again when I reinstall the application. The second question is: Can I make a file with special extension for my application so I can save it in my flash drive?
1 List all of the data from Teams.txt in a Listbox. Include suitable headings.
2 List all of the data from Results.txt in the Listbox (use the same Listbox as in 1 above).Include suitable headings. Note that you cannot assume that the file contains onlyresults for the first 3 weeks of the season. Your program should be able to process a results file with more or fewer results.
3 List all of the data from Results.txt in the Listbox. However, in this case the actual team names should be output (your program will need to get this data from Teams.txt. The data should be formatted so that it is aligned correctly. Include suitable headings.
The output might look as follows:
Home Team Away Team Home Team Goals Away Team Goals Bunbury Braves Nedlands Nodders 5 2
what I have to do is read the 5 names inside the Sequential Access File and store them in an array. I'v encountered a problems in storing it in an array. Here's the code
Dim infile As IO.StreamReader Dim names(4) As String Dim filename As String = "names.txt"
[Code]....
Theres an error in the code saying that a string cannot be converted into a one dimensional array.
I have a config.txt where some of the parameters are set. When I start my app, I want to read that textfile and get these values. But the thing is I want to do it during the splash screen time. Is it in the applications event.vb?
Below is the code which I am using to append data to a text file. Dim FILE_NAME As String = "C:cebsample.txt" Dim objWriter As New System.IO.StreamWriter(FILE_NAME, True) Dim record As String Dim amount As Integer Dim amt As Decimal [Code] .... Now I would like to save that updated file with another name.
I am encountering a problem when trying to write data to a text file. If I put the output into a messagebox I can see it, but when I attempt to write it to a file it is just blank. What am I missing here? EDIT - This is just a simple winform that I specify a path to a local HTML file in Textbox1 and I'm attempting to parse some HREF tag data.
Imports System.IO Imports System.Text.RegularExpressions Public Class Form1
Im learning Visual Basic 2010 on my programming class and we reached the part of file handling. Here i tried to make a simple program that can create a text file with the content of what i type on the textbox, basically i create the file if it doesn't exist, and if it already exists i append the content to it. Once the file is saved i can read it using the "Open" button. Unfortunataly, whenever i try to create the file, the compiler gives me an error saying that it cannot modify a closed file, although i've followed up the execution instruction by instruction and i can't find the error.
Imports System.IO Public Class Form1 Dim body As String
Im new here and hoping that I post this in the right forum. I am SLOWLY learning VB, and have run into a problem that I cant figure out. I have a standard form that you can enter data into.I want to take that data that is entered, and save it to a text file once I click the submit button at the bottom of the form. The form could have up to 500 entries into the form.
I use a text file to store the settings from my program.Now when i save the settings the text file gets created and everything works correctly. I can load the settings without any error.Now when i quit my program and star it up again clicking the load button will clear out any data in my text file. So the file still exist but it empty.It happens when my program runs this line of code.
Dim o_read As system.IO.streamReader = system.IO.File.OpenText("C: est.txt")
That just tells o_read that it is a stream reader and which file to read.How does my file get cleared out by that?
I'm using the following code to import data from a text file into an existing Access table:
[Code]...
The first time i ran the code, it caused no error but no records where loaded into the table. The second time it causes the OleDbException "Table 'TEMP' already exists."explain me wath am i doing wrong? The text file is comma delimited and it has exactly the same number of columns of the TEMP table.
