I wish to import data (into a text box) from specified tags within an XML file.[code]Instead of loading the whole file into a text box I would like it to load data within <ABC></ABC> tags.The amount of <ABC></ABC> tags varies for each XML file. As does their placement (which line they are on).
View 2 RepliesI need to be able to change a path inside a document ( a config file to a program) to the current directory of the application im creating in VB so the text file looks something like
Quote:
something=234
blabla=io
ServerRoot=C:Server
i need to change c:server
I will have a directory of files (IFO, BUP, and VOB; DVD files for anyone who cares), I need to find the first one by sorting these like this: Filter out everything that does not have a .VOB in it, then find the one like this VTS_**_1.VOB. It will always have a "1" before the extension, but the two numbers before that change, lastly I need that file returned as a variable.
View 4 RepliesI'm Writing a Problem that will allow users to move data from one Data file to the next, using a Text file. My problem is that i so far i 3 test users.
No matter what test user is logged on it seems to be Reading the first user info no matter which one is on.
How do i get it to Only Read the User Info and show it up on text file that is Currently logged on.
Code:
Imports System.IO
Public Class TestForm6
Inherits System.Windows.Forms.Form
[Code].....
I am trying to code a delete button for a browsing program based on data from a txt file. I have coded the buttons to sort(ascending and descending), append to the text file, search the text file, but I can not seem to get the delete function working. I am using VB 2010, this is what I have so far:
Code:
Dim deleline As String
Dim line As String
Dim isFound As Boolean = False
sr4 = IO.File.OpenText("Students.txt")
[code]....
This is what I am trying to do. I need to create some data inside my app and send it to another app as a file. But this 'file' should never be written to the hard drive. It will only ever exist in RAM.
View 17 RepliesI am making a simple application that will be able to store competition data into a text file that I have given a custom extension to on saving. Here is an example of the format that i have saved the data in.
Code:
[Comp_Name]Test Competition[Comp_Name]
[Location]Silverwood Lurgan[Location]
[Type]Teams[Type]
[Code]....
When i open the file, i want to redisplay the data in separate text boxes. Later on in the project i want to be able to search within the file for headings for example;
if "[Heat1]" is present then get all text between [Heat1] and [Heat1]
i am currently able to use the streamreader and open file dialog to retrieve the entire string of text fromthe however i am not sure how to go about getting the text between the headings I have used.
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
I am trying to figure out how to replace text in a text file on a specific line number. (for testing, line number 4).
View 6 RepliesI'm sure this is a common problem but I have been unable to find a good solution anywhere.I am using line.Split to read a CSV file.Unfortunately the data contains strings that have comma's in them like so:
"Singer","Hasselhoff, David",21,15
This results in 5 strings:
Singer
[code]....
I have a variable (double) that is constantly update in real time with data from an analog input. I would like to write this data as it comes in to a txt file. When I stop my acquisition of data from my analog input, I should have a txt file with all that data stored on my computer wherever I want it. The way I'd like that txt file to be laid out is like so:
Test Title: "This info comes from a string variable"
Operator Name: "This info comes from another string variable"
Test Date: "This info comes from yet another string variable"
[code].....
And so forth. As you can see I would also like to write the time for each data. This depends on my Timer interval which the user can set. The default is 50ms. So by default, y1 y2 y3 would be 0, 50, 100. How would I generate such a text file?
PS: I have five variables (X, Y, strTitle, strName, strDate)
I have about 4000 objects of a class, each object with 20 members/variables, integers and strings, total about 80000.
I would like to save these to a file, and read them back into objects when the program starts up.
How would I do this in order to keep track of each variable? I was planning to have each line in the file representing the variables of 1 object. Hence 4000 lines. But basically I'm just looking for the easiest way to save and retrieve this data. Should I first convert the objects to an array of strings?
When importing data from excel to vb.net desktop application, Im having "file is open" error. Excel file is at the remote pc. Excel file must open and I have to reach anytime. How can I handle this problem?
View 2 RepliesI am doing system to read text file it contain numbers and I want to read this data to multi array , the description as :-
This site here :-
DataSet format
My data looks like that :-
20 3 10
10
10
10
0
0
0
0
0
1
1
1
1
1
0
1
0
Code: Attached File(s)
Dataset.txt (246.44K)
Number of downloads: 30
I have a procedure that imports data from Excel file. Something like this:
Public Sub ImportExcel(sFileName As String)
Dim xlsApp As New Microsoft.Office.Interop.Excel.Application
Dim nRow As Integer = 2
xlsApp.Workbooks.Open(sFileName)
[Code] .....
If user opens excel while procedure is running, then the procedure will use the excel sheet opened by user and not the one that was using before user opened Excel ...
I'm trying to read in a file. I'm not even sure what kind of data the file contains. Is it binary, unicode, etc? Or maybe it is encryted? I doubt it is encrypted, but I really have no clue. I am pretty sure it contains geometric/drawing data. It shows most characters as boxes.I've attached a picture of the contents when I open it in wordpad. Does anyone have a clue what type this is? and how to get it into a readable format using vb.net?
View 5 Repliesfor 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]....
I want to export data from a DataGridView to a CSV/text file. I then also want to be able to load that same CSV/text file and populate that same DataGridView at a later point in time. My information is loaded into columns in the DataGridView. That is, I am not using rows to represent records, I am using columns. As such, I need to load all the data in each column and export this, by column to the CSV/Text file. Likewise, when I load the control from the CSV/text file, I need to load each column with this information.How do you export/import from/to a DataGridView controlHow do you organize the data in the CSV/File
View 5 RepliesI have a data in my listview and I just want to save it on excel. My code goes like this loading to listview.
[Code]...
I wonder if it is possible to find a specific row and specific columns in data base file (Access) . You see , I am using a DataGridView control to show only SOME of the columns (fields) of a table from an Access file . For example , lets say that in the DataGridView control I only show the following fields :Field1 , Field2 and Field3 .Now , when the user selects an entry in the DataGridView control , I want to insert the text from Field4 into a text box on the form .
The problem , however , is that I don't know how to get the specific row in the data base file and also I don't know how to get the text in column (field) Field4 of that row .One thing that might be important is that the index of the row in the data base file is not necessarily the same with the index of the current row in the DataGridView control . This is because in the DataGridView control the rows are order by the contents in the ID Field .ol .
I am new to vb and I am required to plot a graph in vb. I need to get data from a text file to plot a polar graph of Wind Direction vs Wind Speed. But opening the file from a text file is in a string format, and when i tried to convert to a double, it gives the error:
[Code]...
I need to write data to a file, preferably in binary format, but I am unaccustomed with the concept. Where's the easiest place to get the basics? I could come here with a specific need, but I'm at the point right now where I am more willing to work within the confines of keeping it simple.
Here's what I know:
1. how to open a new file
2. how to specify the record length
3. how to close the file
Some specific questions:
Does the record length have to be constant throughout the file?
Can I read the nth record without reading the whole file?
I am working on a VB Console Application that takes an Autocad drawing type DWG and converts it to a PDF using a shell command that calls a third party application. In this case, acmecadconverter.exe from www.dwgtool.com. Then the PDF that is created needs a unique watermark, so I call a second application for that called pdftk.exe from www.accesspdf.com/pdftk/.
Everything works as intended, except when I try file names that contain spaces. The file system object does not tolerate spaces in the drawing file name. For instance, the following command gives me a system.io.filenotfoundexception...
My.Computer.FileSystem.RenameFile("Test Flowchart1.dwg", "Test~Flowchart1.dwg")
It's the same problem for all of my File System commands. Either file not found or invalid arguments.
The complete script I'm using is here:
Code:
Sub Main()
Dim arrArgs() As String = Command.Split(","), _
i As Integer, folderPath As String, myPart As String, _
[Code].....
I'm currently developing an editor for an AFL management sim.I want to be able to load three or four multidimensional arrays to the program, then save them to the same file. I tried the tutorial on here but got completely muddled up. Why can't it be easy like in VB6 When it was like 10 lines of code tops!
View 5 RepliesI am writing a program to calculate Pi to several hundred billion decimal places and this will require lots of GB of memory. I wrote a test program in VB2008 that saved the first 16 digits of Pi (without the decimal point) to both a text file and a random access file, just to be sure it was outputting the numbers properly. For reference the first 16 digits of Pi are:
View 8 RepliesI have a program that can save to a .txt file.The issue is I need it to be done in a tab delimited way.Basically:
TextHere<Tab>TextHere<Tab>TextHere<NextLine>
TextHere<Tab>TextHere<Tab>TextHere<NextLine>
I have this so far, but all it does is put the TextBox1.Text next to TextBox2.Text
Code:
SaveFileDialog1.Filter = "Text files (*.txt)|*.txt|All files (*.*)|*.*"
Dim FileWriter As StreamWriter
Dim results As DialogResult
[code]....
Our program will start with the help of a FileSystemWatcher object. How can we check or the file is total copied, for example the file is 100 Mbyte it take a time it's ready for use. Idea:
Do While True
Try
N = testForUse(BigFile)
If N = 1 Then Exit Do
[CODE]...
I have an XML file that gets created on form load that just contains:
Code:
<?xml version="1.0" encoding="utf-8"?>
<User />
[code].....
Whats the most efficient way to read in moderately large data tables of constants? Im talking about maybe a few hundred items in a vector, or some 6 x 6 or 8 x 10 tables of numbers or strings, that kind of thing. (Im aware that they arent really stored in two dimensions.)In the old pre-Windows versions of Basic, wed use READ and DATA statements.In VB, we can read from an external file. I dont like to do this because something might happen to the file.
The resource file is another option. The setup is tricky, but once you get it its simple to maintain. It does involve reading strings and splitting them up to get numbers, which should be slow.Then theres the brute force method, where you just fill in the array in the source, you know,x() = {303, 279, 274, 268,} and so on for many continued lines. Some work to get everything in the right place, but one time only. I suppose that this makes the executable bigger.
I currently have a class
Code:
Public Class Customer
Public Property AccountNumber() As String
Public Property PMDue() As String
[code]....
Account Class is initialized as new customer. To save the data from each property in the Account Class, I'm currently looping thru the properties each time Account obtains new data. I tried to simplify the process by the following line...
Code:
CustomerStreamToWrite.WriteLine(Account)
This does not work as written. I figured it would be much faster. It did not write out the property data. It saved "WindowsApplication1.Customer" Not exactly what I wanted. Is there a method to get it to save the properties in a written out style by just using the class name?