Create An Application That Reads Numbers From A File?
Apr 3, 2011
I need to create an application that reads numbers from a file. it then should display the total of the numbers, display the average of the numbers, display the highest number in the file and display the lowest number in the file. We are using visual basic 2008. I am new to this and stuck . How do I begin. I included the number set that we are supposed to read from.
Attached File(s) NumberSet.txt (990bytes)Number of downloads: 80
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May 10, 2009
I'm trying to create a program which reads a text file into an array.
[Code]...
But that's just silly so how can I fix this? Lines isn't being assigned a null value it's being assigned the first line of text in the file which has text in it so I'm confused.
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Jun 24, 2010
I've got an application that reads a XML file via a stream reader. The problem is I can't edit my XML file and save it when others are using the application that is using the XML file at the time. how can i get around this?
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Sep 24, 2010
how to create console application to calculate 23 numbers of fibonacci?This is the script I had done but facing an issue:
Module Module1
Sub Main()
'area to declare all integer
String inputstring;
[code]....
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Jan 28, 2009
I have a hardware which sends out packets containing 17 bytes to the comport in bursts of 3. the little test VB that I have written receives and displays the bytes in a line of 17 bytes long and works fine until it gets to around 170th packet, then it starts to mix up (looks like shifting the data left) the bytes shift mostly by one digit sometimes by two. then it will continue to give almost a packet correct and a packet shifted for about 50 packets. Then it will correct itself for a long while, but then the speed at which it receives drops. All the packets are sent 3 times, and before things go wrong (within the first 170 packets) the packet counter shows that it receives 3 packet each time but after the problem it goes to 2 packet per burst and then to one.
If i close my VB monitoring program say at packet 165 and immediately open it again, it wont go wrong for another 170 packets, this points the finger at VB. I have check my hardware, there is no problem with that.The program reads port - waits for 17 bytes - once 17 has been received it will go and buffer the packet in an array. In fact they are 2 arrays but printing fro either results in the same problem.I have tried whatever i could think of but to no avail, i am wondering if some kind of house keeping needs to be done to clear something... I am sorry the program is a bit messy but I have been making many changes to find out what the problem is - my code below:[code]
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Mar 29, 2012
i have to create something that uses OpenFileDialog, and reads textfiles that i created it.
i did this
Private Sub SK_btn_OpenFile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SK_btn_OpenFile.Click
SK_OpenFileDialog1.ShowDialog()
End Sub
I know how to read the File name, but i want to post the texts that are in the TextFile in my textbox when i press Open/Display file.
Private Sub OpenFileDialog1_FileOk(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles SK_OpenFileDialog1.FileOk
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Feb 17, 2010
I'm launching my application at the end of installation using custom installer class - Sub oncommited.I'm using vb 2005 setup project.The application main form load event need to read/write values from HKCUSoftwareMyApp registry.The problem is that when the application is launched at the end of installation ,it reads/writes from HKEY_Users.DefaultSoftwareMyApp instead of HKCU though I've written
My .Computer.Registry.CurrentUser.CreateSubKey(RegKey).GetValue("Name","")
When the application is launched through Program files shortcut,it reads/writes properly.I need to exit the application depending on registry values.
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Jul 15, 2010
My application reads information from an Excel spreadsheet into a DataSet (ds1) which is then filtered into another DataSet (ds2) based on user-specified criteria. The information is basically telephone call logs that reflects when a phone call was made,what extension it was made one, how long the call was, what number was called, etc.When the user's "search" criteria is matched in ds1 above, the application adds the number called to a ListBox on the form. When the ListBox Item is selected, additional information (call duration and such) is displayed to the right of the ListBox. My problem is that a single phone number could have been called multiple times on an extension within the date range the user specifies and for each occurrence of that number in the ListBox, the "expanded" info only reflects the information for the 1st call to that number listed in the DataSet.
The only unique identifier I have is the DateTime field for the row (as this goes up to the second). I thought about putting it into the ListBox item, but I'd prefer that this date not be visible until the user selects the ListBox item to view the details for that call. [code]
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Aug 14, 2009
I want to develop a small application that reads in scanned barcodes into a database table - Would a vb.net form based application that connects to the database be best approach? What I'm think is each time the user scans in the barcode - a message appears on the form saying the barcode that has been scanned.
1.Would I need to program anything within the program to check whether the barcode scanner is connected (or is this not necessary since it works like a keyboard device?)
2. How could I automate the scanning in without requiring any user intervention like a button which saves it to the database - so basically as soon as a barcode is scanned in - it is saved to the database and the next barcode can be scanned in etc.
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Apr 4, 2011
I am using VS2008(VB.NET) and SQL Server2000. I want to make an application which reads files and Insert Data into SQL. If first file has some error. Write into log and Move Next file for Proceed. How can I do that.
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Mar 25, 2009
I want to create a login system that reads the usernames and passwords for a list of arrays:[code]I have managed to code the program so it accepts the correct username and password and sends a error message when they don't match. The problem I'm having is when the user enters a username that isn't on my Username list. The program always crashes when I enter say "admin1000".[code]
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Apr 23, 2010
I am developing an application that reads an MDI applications child window and grabs the information from a control such as a textbox or listbox. I have tried to use Findwindow in order to accomplish this. I have gotten all the way to the control, but once I get there it returns blank. Can anyone point me in the right direction to accomplish this.I am able to read the window title and get the control title but when I send a message to the window it returns 0. Now I am just experimenting so I have no concrete code, but here is a snippet. [code]
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Jun 21, 2010
I have six textboxes, and upon button press it randomly generates six numbers, one in eact text box e.g. [43] [85] [93] [1] [0] [17]..i create another six textboxes and at the same time allocate these numbers in ascending/descending numbers.I am not looking for any codes whatsoever, as i love the challenge of VB.Net.
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Jan 15, 2010
I have a function to check if a file is open:
Public Shared Function IsFileOpen(ByVal fileItem As String, ByRef bFileStatus As Boolean) As Boolean
Try
[Code]....
I need to check whether a file is open so that an alert can be put on screen for the user to close it before continuing to the next stage of the application.
But when I test the function with a file open, the error is not being caught.
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Jul 7, 2009
The code below reads each line from a file and if the conditions become true it adds the contents of the file from the particular line and after into a string collection (i.e. the All contents). This is what at least what the code should do as the current one only adds the line that it encounters into the string collection.
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Dec 20, 2011
I am trying to write a basic .net program that reads from one file with streamreader, scans each line for specific errors in formating and if the errors exist correct them in an output to another file that I've just renamed as same file name.cache.
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May 30, 2009
Im trying to use a Settings file that the program opens and reads the info from when it loads BUT when the user chooses a custom color (ex: ff5f67d6) How can i assign the form background color to that color code?
Dim BgColor As Color = ColorTranslator.FromHtml(Settings(0))
Me.BackColor = BgColor
Settings(0) = the color code
that is the code i tried to use that doesn't work
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Aug 26, 2009
I have to make a program that reads a txt file after reading it, show it in a richtext box and in another tab make the average of the grades the input received sort it by the student id and then in the same rtb sort it by the average of their grades, and finally save it on a new text file.
The text file input is something like this
12 3 10.0 6.9 7.3
19 2 6.7 9.3
10 3 4.5 9.3 4.5
[Code]...
As you noticed in the input the first number is the student ID, the second number is the number of tests made by the student, and the other 3 numbers are grades, in the output the first number is the student ID, the second number is the average of the tests, and the other 3 numbers are grades, I don't have a problem opening and saving a text file and neither creating a tab with 2 RTB , my problem is how do I tokenize or read the input line by line, i guess that i need to use the split function but I don't know how to implement it into the program.
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Oct 2, 2011
I have the following code, which reads data from xml file and displays it in the datagridview. It all works fine:
[Code]...
Instead of showing read data in datagridview, i'd want to read the data from xml file into one dimensional array: X(Impedances) Or is there a way to read value from this datatable into string variable without getting data from datagridview? The point is: i'd want to scan through all "Impedance" values (which are read from xml file) and compare with value y to catch the nearest value to y. How to do that?
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Jun 9, 2010
I am making a program that reads a file. Csv,and information to a textbox.
After he demand on the Csv file, the same information he writes what is in the same row forward in the same textbox.
A-dos-Francos;39.346246,-9.031105
A-dos-Negros No;39.366089,-9.090929
A-dos-Negros PV;39.366886,-9.131098
[CODE]...
Example: If "A-dos-Francos" is written in the textbox I want that it be replaced by "39.346246,-9.031105"
But in the same textbox.
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Apr 27, 2010
I have a string with value ""123|abc|456|" separated by vertical bar. I want to create a sub that reads upto "|" and then exits the sub.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim myString As String = "123|abc|456|"
For Each character In myString
[code]....
My output looks like this 123abc456, which is not what I am looking for. How do you do this with Do While, and stop the loop when it encounters the vertical bar "|"?
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Oct 10, 2011
Im trying to come up with a do while statement that reads through a text file till the end while pulling out 3 different matched items, then writing those matched items to ascending spots in an excel file, and then creating a bar graph according to the saved data. Sounds complicated but...I have the program reading the text file, pulling out the first iteration of all three, writing them to an excel file, and I have it even graphing them the way I want it to. The only thing I havent done before (and which is probably the easiest), is creating the do while statement so it keeps searching line to line for the three interactions of what im looking for and writing them to ascending spots in the excel file.
Right now my code works like this, which is perfect for pulling out the first 3 and creating a graph, I just inserting a do while and a rowindex + 1 variable.
vb Dim alines() = System.IO.File.ReadAllLines("C:deviceinfo.txt")
Dim amatch As String
Dim muvalue As String
[CODE]................
I have a feeling in order to pull this off, I do not want to use the, "ReadAllLines" option and possibly want to put the text into an array.
And do something like: if lines.count > 0
But im not familiar with how arrays work in VB, and more specifically what the syntax is. The other tricky thing I am trying to add is an if statement that adds to a variable (such as i) everytime a line is added to excel so the program will write to ascending lines. I was trying to have the it work with the do while statement but pretty soon realized that if I did: i = i +1. Everytime it went through the loop then the data was going to be on random lines corresponding to their place in the text.
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Feb 19, 2010
Im developing an app in VB.NET 3.5 and uses an msaccess database. when the app run by firtstime look for some config files including this example.mdb but if this msaccess file doesnt exist the app should be able to create it and create the tables for being used later.
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Aug 1, 2009
how to create package file in vb.net window application
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Jun 12, 2009
I want to create setup file of a desktop application using vb.net.
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Nov 19, 2009
So i'm trying to create a save configuration file and I found the Application Configuration file which seems like it'll do what I want it to do what
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Jan 12, 2009
If I create a windows application. Where is the file for app.config? Can I modify it?
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Sep 11, 2009
I am new to VB.net. I want to read and input file and store that data to an SQL Server database. Do you have an sample code that do such?
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Aug 13, 2011
I have an application that I'm writing that needs to allow the user to be able to create templates and save them for how the applicaton will work. For instance, lets say I am provisioining mobile devices, and my application allows the user to create a template to only install "application1" on the device, with "application1" settings for "devicetype1". But then if the user has "devicetype2", he or she can select the template that they created to install the software for that kind of device. I've looked around and all I find is the .exe.config for read only application settings, and I have found the user.config for the read/write variables. But that won't work as my application could have several templates depending on what the user chooses. I'm looking to have my app have a "create template", "edit existing template, and"use existing template" buttons, and have my config file extension like *.ipx for example.
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Aug 17, 2010
I want to create one help file for my whole application. and once user press help button next to any input control then appropriate help topic from file should get display. how can i create this functionality in vb.net?
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