Sequential Text File To List Box?
Mar 14, 2012
had a sequential text file loading into a list box this afternoon, opened the programme a few minutes ago and its not working! The text file was loading first name and surname onto the same line, but now it will only put the first name into it.
Private Sub frmSelection_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim Datafile() As String = IO.File.ReadAllLines("Datafile.txt")
Dim query = From line In Datafile
[code].....
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Mar 13, 2012
What I am trying to do is connect a sequential text file up to a list view. It displays alright but i have a button which is to add certain details to the sequential text file, but instead of adding it in comma separated variable format, i.e. John,Murphy, etc... horizontally it adds the information vertically downwards, i.e. John
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May 1, 2010
I am trying to create a program for a voters poll, where when a caller calls in, I can enter their vote for one of the four choices in the listbox and it will be automatically added to the vote count. I got that much to work, I need to save the vote to a sequential text file, when a vote is saved. I know I am close but it is just not quite working. I only need help getting the info to save to the sequential text file. I have also included a jpeg of what the form looks like.
[Code]...
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Mar 22, 2009
I know that Deleting a specific line in a sequential text file is impossible but instead copy the needed lines and not copying the unneeded ones to an output file .. killing the old one and renaming the new one with the same.. I can't make this step...
That is my record file
Code:
Input #1, CustomerName, CustomerHomeAddress, CustomerBussAddress, CustomerTel1, CustomerMob1, CustomerID, DateRent, CarRegPin
Code:
"Josek Sam","68 West Land Street","149 Union of States","4524563","45635463","JOSKSAM1",#2009-03-02#,"MILANCGLZ2008"
"Josef Malm","142 Unions Street","64 Hamersters Street","452504","42542054","JOSFMALM2",#2009-03-06#,"MILANCGLZ2008"
"Dave Green","131 Oxford Street","96 BlueBane Route","452542452","43254345","DAVGRN3",#2009-03-07#,"MILANCGLZ2008"
I made a form that when you put your CustomerID in Text3 Box.. it access the records and make some calculations. now.. The customer will return the car.. Then his data should be deleted.. I want to know how to make that when I enter the CustomerID and press on the Command button .. It copies the other lines to a new output folder and doesn't copy these ... So it appears to be deleted using this way..
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Apr 14, 2009
i'm trying to load a sequential text file into a listbox, and for some reason it won't move onto the next line? instead i get square characters instead
It appears like:
Where the square characters are, i want it to be an extra line as opposed to just that? here's the
Dim YOUREFILE As String = "C:Documents and SettingsAdministratorMy DocumentsPROJECTFILESYOURSTUDENTSCORES.TXT"
Dim objReader As New System.IO.StreamReader(YOUREFILE)
[CODE]...
Here's what the file looks like:
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Mar 13, 2012
I have a datagrid displaying details from a sequential text file. I need to have a button to search through this textfile and display only that line of data in my datagrid. I am using an input box to enter the persons name they wish to search for. The datafile contains several lines of info like : John, Murphy, 35, etc.
[Code]...
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Mar 14, 2012
In my program i have a listbox populated with data from a sequential text file. [code] Mary, Murphy, 16, 893782, Douglas etc.From here the user selects the person they wish to see displayed in the datagrid with all all other relevant details from the text file displaying. Problem is I cannot figure out how to refer to the selected person and then get it displaying on its own in the datagrid. [code]
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Apr 17, 2010
I have a BindingList of transactions that I am binding to a DataGridView. The client now wants each row to have a sequential number. (1,2,3, etc).There could be hundreds of transactions. So is there an efficient way to assign a sequential number to each item in the bindingList?I know I could For/Next through and manually assign an incrementing index. But I am concerned about the performance when we process lots of transations.
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Jun 12, 2009
I am trying to copy the values to another sheet but not in any sequence eg.A1,B2,C4,D7 ........and so on. I am trying this slick way of doing it by the code below ( found on the web) without success so far but I got a feeling I am close to the solution. I am new to any kind of Programming. This is my first attempt. (so a chuckle or two is ok after seeing my "difficult" problem)
(This is an excel VBA Prblem)
Sub justdoit()
Dim s As Variant
[code].....
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Oct 13, 2009
My teacher as asked me to allow a user to input three pieces of information about a DVD (the ID, the title and the running time) and for the program to add that data to a sequential file. My textbook fails to explain it and I am at a loss as to where my book from last semester is located at the moment.
1. What is a sequential file?
2. How do I display information from it into a messge box?
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Jul 6, 2009
I am stuck on an easy problem I'm sure, but for the life of me i cannot figure it out. I need to read a sequential file into a listbox. I can read the file into the textbox but i want to format the data in the listbox. for example i want to PadLeft(10), delete the excess commas, and give a heading for each column. here is the code i have and attached is the text file.
Imports System.IO
Public Class Form1
Private Sub exitButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles exitButton.Click
[CODE]...
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Apr 27, 2012
I am working on a program in Visual Basic that incorporates using a sequential access file for a ballot type program. Each type the user clicks the save vote button, the amount of votes gets stored.
What I am trying to do is in my access file is to display the number of votes as an actual number. The way my program is written right now, the name of the candidate appears as many times as the vote was saved.
for example, if perez was voted for 4 times, in the access file perez is displayed on 4 different lines. How do I display the actual number of how many time they were voted for. I'm thinking using a counter variable, but not really sure how to really implement it in. this is what i have so far.
[code...]
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Sep 10, 2011
I've got Visual Studio 2010 and I am looking to clean up my code technique, since I've taught myself and now I'm taking classes.
I'm trying to use a For...Next Loop so that I can fill a text box with sequential numbers. For some reason, all I can get in the text box is the last number and I feel that at this point I'm probably overthinking it...
All I want is on the button push the text box shows:
Here's what I have:
CODE:
Once I grasp this simple concept, I can move on to the actual challenge ahead of me, but I really want to know the proper way to handle this with out going all spaghetti code.
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Jul 1, 2010
create sequential file with path?
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Apr 15, 2009
I am making c++ write a file to a folder of my choice in which it prints out my scores from a math test that c++ gives me. The problem is vb is kicking an error out
"Value of type 'String' cannot be converted to 'System.Text.Encoding'.
All the file is, is a simple .txt file named math_scores.txt that cpp outputs[code]...
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Apr 2, 2012
Is there an easy way to read in a comma deliminated file in VB 2010. In VB 6.0 you could read the file in directly to variables. It appears this has been removed in 2010.
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Apr 27, 2009
So i'm writing this program that puts the number 0-3 in a new line in a text file. The number thats stored is dependant on the index of the users current selection in a listbox. I have no problems coding the button that stores the votes but I'm having some problems with the button that displays the votes in each choice's individual label. This is what I have so far. I add 3 to the index each time because of the CR and LF that's caused by the ControlChars.NewLine that's used when modifying the sequential file.The problem I'm having is "Explicit initialization is not permitted for arrays declared with explicit bounds." on the line where I try to make the contents of votes equal to the contents of the sequential file. The error makes sense to me, but I don't know any way to get around this.
[Code]...
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May 2, 2010
I'm trying to get a program running that loads a sequential file such as "records.txt" into a two dimmensional array and searches the "records.txt" for the data that the user enters into a text box. Not quite sure how to go about doing this.
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May 1, 2010
I am trying to create a program for a voters poll, where when a caller calls in, I can enter their vote for one of the four choices in the listbox and it will be automatically added
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Feb 11, 2011
I have this assignment which has to read the names from a sequential file and store them in the names array. Then i have to sort the array in descending order and listbox. Only I'm having a problem when i try to implement the sort method. Theres no syntax error but the sorts not happening.
CODE:
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Feb 10, 2011
Sequential Access File and storing them in an array?
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Nov 25, 2010
reading words from a text file and displaying them at random.The format of the text file is....
verb
noun
answer1
[code]......
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Feb 13, 2009
I have a function that is reading a sequential file and storing it into an array by using the delimiters of
The first record appears correctly however, the second element in the array has two null lines at the beginning and at the end of the record. [code]...
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May 27, 2009
Im working on a program that will display a price when an item number is entered in the search box. I have the information in a text file for the program to find it but am unable. I have successfully made it so the items show up in a list box and will show the price when clicked on, but cant get the other one to work.
Here is my code for searching from a search box:
Option Explicit On
Option Strict On
Public Class TryonServices
[code]....
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Jun 26, 2011
I am trying to read from a text file called: "NameList1.txt". It has four lines and two variables seperated by a ",".
The following is my code:
FileOpen(fn, NameFile, OpenMode.Input)
Do While
Not EOF(fn)
Input(fn, a, b)
txbFirstData.Text = a
txbScndData.Text = b
Loop
"End of code"
fn is the freefile number and "NameFile" the the path and filename.
I get the following error:
Overload resolutionfailed because no accesible 'Input' accepts this number of arguments.
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Aug 20, 2011
I'm working on a new version of something I had created years ago in VB6. What I was doing then is populating a combobox with lines from a sequential file ("title","URL") like this:
Open "data.dat" For Input As #1
Do While Not (EOF(1))
Input #1, NameInput, URLInput
cmbEntry.AddItem NameInput
Loop
And then checking against it on a button click to load the URL associated with the selected name:
Open "data.dat" For Input As #2
Do While (cmbEntry.Text <> NameInput) And (Not (EOF(2)))
Input #2, NameInput, URLInput
Loop
[Code] .....
What I'm trying to do in Visual Basic 2010 is the same process, though I'll be including a third field ("category","title","URL") to determine which one of four different comboboxes I add the entry to. I know I need to use streamreader, but I'm not finding much in the way of documentation or examples on how to do what I'm trying to do, which is:
- Populate one of four comboboxes with the second value in each line of an external text file, based on the first value in that line
- Set a string to the third value in a line of an external text file, based on the second value of that line
How to read these values from the file.
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Dec 4, 2009
How can i write string in sequential file without quotation-mark?
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Feb 9, 2011
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.
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Apr 4, 2011
I have a checked list box that is populated with the text from a text file. I started off with this code:
Dim FileToLoad As String
FileToLoad = TextBox3.Text
Dim fs As FileStream = New FileStream(FileToLoad, FileMode.Open)
[code].....
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Mar 1, 2010
I have a text file and a list box. what Im wondering is how I would get the listbox to list the text from the text file. sure, easy, but wait! in my text file, I listed web addresses and dates with tags in front of them. for example my file would be like: [Code] what would the best way of reading the tags and displaying it right in the list box?
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