Reading Numbers From File Into A String?
May 1, 2012
i have a number in this format: 123 and I want a select statement such as below for comparsion so i dont have as many if statements:
Select case numbers(i)
case is = "123"
case is = "234"
example but in real scenario numbers are random.
Heres my code in which all select cases dont get fired:
Public Function UserAdd() As String
On Error GoTo Errorhandler
Dim personcount As Integer
[Code]....
But the case is statements above dont fire when I know that number is correct above
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Feb 5, 2012
I have following code that reads data using OleDbDataReader.The funny thing is that I can only return numbers although I converted to string.
Dim cn As New OleDbConnection
Dim fileloc = Server.MapPath("~/test/")
cn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fileloc +
[code].....
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Mar 29, 2010
currently i need to use 4 different texts files in order to read data and run my program, is there any way that i can just use 1 text file or 1 excel spreadsheet? here are my codes now.
Dim File1 As New System.IO.StreamReader("C:Documents and SettingsUserDesktopWindDirectionLanding.txt") 'Calling out the file.
Dim File2 As New System.IO.StreamReader("C:Documents and
[Code]....
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Mar 26, 2011
I've always been slightly stumped as to why the following happens if I write[code]...
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May 30, 2010
I've been trying to fix this problem for days, but I haven't been able to successfully apply any of the code that I've found to my project the way it is right now. Maybe I'll need to change the way it reads the file altogether.
Anyway, I'm trying to read through a text file line by line, reading each line into its own string.
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Dec 29, 2009
I have a remote text file on http://somewhere... that I need to read into a string variable in vb.net. What is the simplest way to do this?
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Aug 2, 2009
I want to read a tab delimited file so i set up a data reader with the following connection string: [Code] However when I do this it doesn't seem to delimiter at the tab characters (I cannot work out why it is breaking up the data where it is). the first few lines of the csv are in the attached "dbamstr.txt" - the select statement I am running is: "SELECT * FROM dbamstr.txt".
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Sep 7, 2011
I can write a 1-d string array to file with:
Dim test() As String = {1, 2, 3, 4, 5}
File.WriteAllLines("C:MyFile.txt", test)
but can't see how to write a 2-d array to file.
I've tried this:
Dim test(,) As String = {{1, 2, 3, 4, 5}, {34, 22, 12, 33, 55}}
Dim myfile = File.CreateText("C:MyFile.txt")
Dim row, col As Integer
[Code].....
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Jan 4, 2011
We're converting a Classic ASP site to an ASP.NET site. One function was to upload a 'template' of data in CSV format for importing into the database. There were several different record types in there (the first field always indentifies the type of data).The task was to get the CSV into a DataTable so it could be validated (new project is to have MUCH better validation rules)
The code seemed pretty straightforward - watered down (taking out comments, Try/Catch, etc) it is as follows:
Dim da As New System.Data.OleDb.OleDbDataAdapter
Dim cn As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & strDirectory & ";" & "Extended Properties=""Text;HDR=No;FMT=Delimited;""")
[code]....
The DataTable (dtData) is populated, but only starting with the second line of the CSV file DESPITE the fact that "HDR=No" is in the connection string.
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Sep 20, 2010
I'm using vs2010 and can't get this to work. The same code has worked in earlier versions. What has changed?
config file:
<appSettings>
<add key="ConnectionString" value="Data Source=MikeLaptop;Initial Catalog=AdventureWorksDW2008R2;Integrated Security=True"/>
</appSettings>
Code:
Dim strProvider As String = ConfigurationManager.AppSettings("ConnectionString")
strProvider is always = nothing
How to do this now?
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Jul 3, 2011
I have a weird requirement to parse a file which is a comma separated string with repeating header..i have a file which i load into database and this gets populated as a single column string with header and details data:something like this (This is single COLUMN String in a table). SSIS is not able to handle this so i am trying to know..If it is possible using writhing VB.Net custom component.[code]Also, if i can pass the values of header (i.e. header3, header5, header7 and header10) as a variable would be ideal.
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May 19, 2009
Tell me older versions of these commands to be used with .NET 1.1?
The pieces of code I am using are:
For reading a text file to a string-
Dim str As String
'reading the content of the file "test.txt" and storing it in the declared variable
[CODE]...
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Sep 7, 2008
I have a binary converter I am attempting to build and want to read and convert the InputTextBox(alphabetical characters) letter by letter however all I have so far is one letter at a time
Image here is the code I have so far:
Code:
Public Class ConverterForm
Private Sub OpenToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenToolStripMenuItem.Click
[Code]....
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Apr 1, 2011
I'm having trouble with reading a .txt file line by line, converting it into a string, then putting it into a listbox. When I execute I get an error saying "IndexOutOfRangeException was unhandled" Here is my
[Code]...
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Jun 12, 2011
The string itself contains things like "random" & random.next(1,3) & "random2" etc. The string registers all of this as a string and doesn't actually calculate random numbers.Is there any way to fix this?
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Apr 10, 2009
I'm having a problem converting a string of letters to a string of numbers. I've tried:
Dim A As String = ""
Dim strOutput As String = ""
Dim X As Integer = 0
[Code].....
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Jan 2, 2010
I am working on a project in VB 2008 and need it to do this:Read first line from text file (using Openfile)Enter line into textbox on formDo some other codeThen Read second linefrom text fileEnter line into same text boxand loop until we have gone through text fileI am not sure how to read line by line from text file then enter it in textbox. I can open the Openfile and get the filename and everything, but I just am not sure how to read from it or enter that line into the textbox.Here is what I have, its not much but its a start:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim FileReader As StreamReader
[code]....
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Sep 29, 2009
I know you can just use integer.parse to convert a string to a integer, but I need something else.I have a String like this:
001010000000101
Now what I need to do is place al those digits in a array like this:
Dim example() As Integer = {0,0,1,0,1,0,0,0,0,0,0,0,1,0,1}
What I am doing now is this:
Dim text As String = "001010000000101"
Dim collection(15) As Integer = Nothing
For i = 0 To text.Length - 1
[code]....
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Nov 17, 2011
i do have a medium knowledge of Python, HTML/CSS. I am working on my first basic program. a simple calculator. Buttons representing numbers 0-9 Buttons with + - x / = and a clear button.
So what ive done is created a string, and when the user hits the button, it adds that value to the string (hit buton 4, it adds a 4, hit the minus, it adds a -)
i need a "function" that grabs that string, uses logical math on it, to determine the answer. I know in Python you can use: Eval(STRING NAME)is there an equivelant for VB?
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Aug 25, 2010
I need a vb function to determine the last numerical characters in a string. For example, if the string is Step1, I need it to return 1. If the string is Step32, I need it to return 32.I'm aware of the string functions like Right, Instr, etc but I'm just not sure how to get what I need
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May 4, 2009
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?
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May 26, 2011
Dim number As String = "07747(a)" If number.... Then endif I want to be able to check inside the string to see if it only has number, if it does only contain numbers then run whatever is inside the if statment? What check do i use to check if the string only contains numeric and no alpha ot () etc ..? What i am trying to check for is mobile numbers, so 077 234 211 should be accepted, but other alphas should not be
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May 9, 2009
I included all the code this time. In calculate click event the value is zero and I don.t understand where I went wrong. My work is due tomorrow, if anyone can tell me why I can not extract the price from the string. What this program is doing is taking items from the stockListBox and adding them to the shoppingList Box then extracting the price from the shoppingListBox and adding the prices together.
0
Public Class SupplyCalculator
Dim lists As String = "staple" & "stapler" & "folder" & "notebook" & "pencil" & "eraser" & "pen" & _
[Code].....
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May 9, 2009
This is my second post on this topic. I included all the code this time. In calculate click event the value is zero and I don't understand where I went wrong. My work is due tomorrow, if anyone can tell me why I can not extract the price from the string. What this program is doing is taking items from the stockListBox and adding them to the shoppingList Box then extracting the price from the shoppingListBox and adding the prices together.t a note- in public class I changed the string and seperated the price from the item, not sure if I was suppose to do that.lso, everything works except the calculate event.
0
Public Class SupplyCalculator
Dim lists As String = "staple" & "stapler" & "folder" & "notebook" & "pencil" & "eraser" &
[code].....
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Jan 28, 2011
Can I have a List containing one string and two numbers? Or I can only have one type of element?
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Nov 29, 2009
How can you remove number from a sting. The numbers could be anywhere in the sting and they could be any combination of numbers but would be together in the string. Ie abcdefg321hijk....
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Apr 2, 2010
Okay, so I know now how to replace vowels in a string. Is there any way I can use the Select Case similar to the code below to replace all numbers into letter Z.
[Code]...
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May 8, 2009
i want to reverse some string with numbers how to reverse it
ex: "ABC 123" --> "123 CBA"
or
"ABC 123 DE" --> "DE 123 CBA"
reverse string without the numbers
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Aug 27, 2009
I'm working in a program that reads sms from phone I have messages like "You have successfully transferred 100.00 EGP to 20119845844Balance 7555.00Transaction: 4620439" Stord in a string So I need to search the message for the numbers 100.00 , 20119845844 , 7555.0 and 4620439 and it's sure changed every message so the how to search for this Numbers and add every one in variable to use every number of them alone?
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Jun 12, 2010
I currently have a string like MondayJohnsRoom1130D I want to split this up so I have Monday - Day of the week JohnsRoom - Room name 1130 - Time D - Means Daily I get given this format from another computer, the room name can vary in size but the last leter D will always be one letter and the time 4 characters.... HOw can I split this up?
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