Getting Values From A .txt File?
Jan 7, 2010
I have a file which contains lines with comma separated values:
Eg:
Line1: a, b, c, d, e
Line2: f, g, h, i
Line3: x, y ,z
I would like to read all first values of the lines, all second values of the lines, and store them in arrays.
This means that 'a,f,x' should go together, 'b,g,y' should go together, 'c,h,z' should go together, 'd,i' (only two because line3 hasnt got a 4th element) should go together, and finally 'e' (one because only line1 has a 5th element).
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Mar 23, 2009
I have a DEM file(Digital Elevattion Model File) and I am trying to open the file,where we have Latitude and Longitude values inside the DEM file.And, Now I have opened the file using Filestream and Read the file using BinaryReader.But, I am having a trobule in getting the values of Latitude and Longitude.I am getting Byte values randomly as 1,202,31,271 etc.But, we dont have latitude and longitude values more than 180,and also I am not getting 16 bit UInt values.For example, the values should be like Latitude 20.00416666666667 and Longitude 39.99583333333333.So,read the correct Byte values of the DEM file.The code I have used till now is:
Dim fs As FileStream = New FileStream("C:UsersadminDesktopHeader and DEM fileE020N40.DEM", FileMode.Open, FileAccess.Read)
Dim rd As New BinaryReader(fs)
Dim convertDB As UInt16
For i = 0 To rd.BaseStream.Length
[code]....
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Jun 2, 2011
lets say I have a form (form1) with lables a-z which are all designed with default text "0". So they all show 0 on program startup. which is fine. I also have a dialog with 2 TextBoxes; I want my program to update the default text/value on (only)form1 labels x, y and z to whatever was put into the textboxes when i press the OK button on the Dialog, so these specified labels show the 'new' value on next startup. Is it even possible or should I save the values to a file which loads the values in the specified labels on startup?
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Apr 30, 2009
When I look at a file on my hard disk, e.g. test.csv, when I look at the Properties of the file, it is officially known as, "Microsoft Office Excel Comma Separated Values File", and file types of .pdf are listed as "Adobe Acrobat Document", etc. etc. All of this information can be seen in Windows Explorer too when my folders are displayed by Details. How do you get at this "type of file" information with .NET?
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Jun 4, 2011
I need to get and set a value from an xml file Example:
<?xml version="1.0" encoding="utf-8"?>
<settings>
<snaptoedge>true</snaptoedge>
</settings>
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Nov 10, 2009
I am creating a csv file from my vb.net application as shown below
Dim csvFile As String = My.Application.Info.DirectoryPath & "Test.csv"
Dim outFile As IO.StreamWriter = My.Computer.FileSystem.OpenTextFileWriter(csvFile, False)
[Code].....
But the value in the csv file appears like 1.25778E+12 for 123456545666644565554
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Mar 12, 2011
I have a question, that is: What is the easiest way to get Integer values from a file.The file is structured like this: (Without the text)10...How many values are in the file 1 2 3 4 5 6 7 8 9 10..The values...I know how to do it, the hard way, but I need an easier way, to teach a friend the basics of Vb.net.
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Apr 12, 2011
I'm having issues accessing the resource file for my project.
Dim rm As Resources.ResourceManager = New Resources.ResourceManager("MyProjectName.My.Resources.Resources", [Assembly].GetExecutingAssembly())
Dim myValue = rm.GetString(lookUpKey) 'boom Object reference not set to an instance of an object.
I think the issue is with the string "MyProjectName.My.Resources.Resources".Would I be better off moving the strings into their own resource file?
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Nov 7, 2010
I have a problem reading a file with hex values.
The values have this format: (2C 0A 0B 45 32 38)
I�ve tried two different ways to open the file. The first one, is storing in a variable of type string,
Dim srTrad As New System.IO.StreamReader(fichToOpen, System.Text.Encoding.ASCII, True)
sLine = srTrad.ReadLine()
so what I get is �2C0A0B453238�. Then I try to put them in pairs and reading as a HEX value, but I can�t. The only thing I get is the hex value of �2�, �C�, and so on. This is not what I�m looking for.
The second way is storing the values in a variable of type Byte:
Dim srByte As New IO.FileStream(fichToOpen, FileMode.Open, FileAccess.Read)
Dim br As New IO.BinaryReader(srByte)
Dim data As Byte() = br.ReadBytes(CInt(numBytes))
The result here, is pretty the same as before. For the pair �0A� what I get is either (30,41) or (48,65) (hex values or Dec). What I need isn�t to convert a char to its Hex value (I saw several examples for this on this forum). What I need is to know that 0A means 10 (0A is a hex value itself)
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Sep 2, 2011
We have a middle tier application which transfers data from one application to other.I need to write few values to a CSV file but every time the code runs it overwrites the prevoius line.How do I start with a new line every time
TextWriter tw =
new
StreamWriter("D:\parsII\Build\CCSDataProp\bin\server\smaple.csv");
[code]....
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Jun 3, 2011
im a newbie here, im taking intro to programming wth VB in college and im having problem with the homework here's what im supposed to do
[Code]...
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Jul 20, 2009
I have two text files which contains are like this[code]..
When the original files find the same values in drill file than it must overwrite the original file the line from drill file. Let say original file contain T230 than it must serch for same value in drill file if it find than it must overwrite the original file line with drill file line. The content of drill file is not fix. It will allways be update according to need.
is that posible to connect two text file?
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Jan 15, 2011
I am editing BINary file and i need to parse some values from it without corruption of file, unfortunately I was try everything, but I dont know how to parse it on the byte level. I know how to read, write, search bytes from files but not how to parse it.
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May 25, 2011
how to capture the 'ID' literals from the following xml file example using VS and VB 2010. I plan to assign it to a temp variable for later use.
<?xml version="1.0" encoding="utf-8"?>
<Rows>
<Row Sortorder="1">
[code]....
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Jan 27, 2010
Essentially, what I'm trying to do is get a list of values out of a database and put them into a bunch of checkboxes. When the user submits their selection of these checkboxes, I need to see what they've chosen.So I have no idea how many checkboxes I'll need, or what the values will be. I will however be listing different categories. I would like the final result to look something like this:
<h1>category 1</h1>
<input type="checkbox" name="cat1" value="avalue">
<input type="checkbox" name="cat1" value="anothervalue">
[code].....
However, I found this seemes to only work in the front end. I need these values passed back to the backend so I can decide what to do with them.
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Jan 3, 2012
i am building a web application with VS2010 and framework 4
in the web.config i have defined the external file path
<appSettings file="\serverc$InetpubwwwrootConnectionsGlobal_Settings.config">
<add key="var_1" value="xpto" />
[code].....
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May 18, 2009
How to match one value to another value in same text file. For example I have a this value : 116.71 33.3 in my text file. I want to check whether another same value exist in a same text file or not.
I used this code to find my first value
Do
myLine = myReader.ReadLine()
Loop Until myLine.Contains("*+*+* Top *+*+*")
Do Until myReader.EndOfStream
myLine = myReader.ReadLine()
[Code] .....
Once I get the value I want to check another same value exist in the same text file or not.
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Mar 2, 2009
I'm new to VB.net and have only a few projects under my belt. This one has me stumped!! I need to open a file and search its contents hex byte by byte. (Similar to Hex editor). On finding a particular value I need to replace it with a set hex value then write and close the file. So far I have only managed to read / write the ascii equivilant.
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Jan 22, 2010
I want to get a value from 12 excel sheet. is there any way that i get the values without opening the excel sheet? I am using vb.net. if there is a way to read values without opening the excel file.
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Mar 4, 2011
I have A combo box with 5 values in: How would i save all 5 of those values to my file?sw.WriteLine(CustomerIDTextBox.Text + ":" + CustomerFirstNameTextBox.Text + ":" + what????? Once these values are saved how would i go about retreiving them from the file and displaying them back into the Combo box?
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Oct 25, 2010
I have a form with a couple of combo boxes. The first combobox adds items based on each row in an excel sheet.
Public Sub FetchExcelValues(ByVal ControlType As String, ByVal control As Object, ByVal xlApp As Object, ByVal xlWorkBook As Object, ByVal xlWorkSheet As Object, ByVal column As String, ByVal row As Integer)
[Code]....
This basically reads each cell in the specified column until it hits a blank cell. Then it takes the value of each cell and adds it as items to the first combo box. Now, what I want the code to do next is to take the selected item from this combo box and look for a match in another worksheet. When it finds a cell that matches, it should pick up the value from column B of the same row as the match. There might be more than one match as well, so every time it finds a match, I want to pick up the value of Column B of the same row and add THAT as items in the second combobox.
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Jun 6, 2012
I know similiar question have been asked but they are a little different so here I go. Basically I have a game in which the user enters their name and they get a score. This name and score then get recorded when they end the game as follows:
Dim userdataSW As New StreamWriter("E:GameScores.txt", True)
strline = frmVictory.TempPlayerName & "," & frmVictory.TempPlayerScore
userdataSW.WriteLine(strline)
userdataSW.Close()
userdataSW.Dispose()
What I then need to do is sort these values in the text file from largest to smallest (based on the number not the name but I still want the name to be assosiated with that score) so I can have the top 10 scores appear in a hall of fame type thing.
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May 30, 2012
I cannot update the column value on a *.csv file. Will someone help me out in this.My code snippet is as follows:
Dim str As String = ""
str = "update data.csv set code=code+'Test' where id='aafes'"
da1.UpdateCommand = Conn1.CreateCommand
da1.UpdateCommand.CommandText = str
[code]....
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Jan 8, 2010
update values in a CSV file.I would prefer to use ADO and write a query to update the values.
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Mar 6, 2011
Dim swQuotation As StreamWriter = New System.IO.StreamWriter(QCHome.QCQuotationsFile, True)
' Otherwise, write the data to the file
swQuotation.WriteLine(QuoationsCustIDTextBox.Text + ":" + QuotationIDtextbox.Text + ":" + ETC.... ETC...
I want to be able to retreive the Value of QUOTATIONID saved in the file, in another form, but i can't seem to get anywhere with it, and its bugging me.The following code Doesn't work, when it should :
'For Multiple Quotations.
Dim Quotationlines() = File.ReadAllLines(QCHome.QCQuotationsFile)
For i = 0 To Quotationlines.Count() - 1
[code]....
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Dec 3, 2011
I have several textboxes and one combobox in which I would like them to have them placed in a file, but I have run into several problems while doing it. I am taking a beginning course and the book doesn't seem to explain things to well.
1. How can I let the user enter a file name after the data and button has been clicked
2.How do get I get a information from the combobox to grab the text within the selected item to the file
3.How to I write the entered text value to the file like using the notepad file?[code]..
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Mar 4, 2010
i am not getting the integer values in dataset while reading from an excel files the field which is integer will be showing as NULL.
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Jun 22, 2009
I'm using VB 2005, how do I open a CSV file and read the columns/rows and display the values in a datagrid?
CSV file example: jsmith,jsmith@hotmail.com
I then want to perform an action on each row i.e. each user, how would I do this?
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Sep 25, 2009
I am trying to read data with a test routine from a fairly simple 3rd party Excel file. The file has three sheets and was created by Open Office 3.x as an 'Excel 97/2000/XP .xls' file. The later, still to be programmed, application must later run on machines with Windows XP Professional using the 2.0 .net framework and no Office package installed. The content of the file does not need to be modified by the later application. For some reason, numeric values are not read correctly. They "convert" to DBNull. I've searched around a bit but not found a 'simple' solution for solving this problem. Adding 'IMEX=1' or 'HDR=Yes;IMEX=1' to the connection string results in an error 'Installierbares ISAM nicht gefunden' (installable ISAM not found).
Based on various examples I've found, I've written the following test code:
Option Strict On
Option Explicit On
Imports System.Data
Imports System.Data.OleDb
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code] .....
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Jan 16, 2012
i need the max ,min, avarage, for the 24 lines that lines counted from the line that contain the max date so i get the code for the max date for in the txt file this code used for both if txt file sorted by Ascending or by Descending
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
[code]....
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