How can I write/read a structure variable to a file?
The structure variable is declared as :
Public Structure StructDimensions
Public RectHeight, RectLength, RectWidth As Double
Public PitchedLength, PitchedWidth, PitchedHe, PitchedHr As Double
[Code]....
Is there a simple way to create a file for this type of data?
How can i write and read a array of a structure to a file? I have the following structure
[Code]...
I have an array of structure like this:
Structure Planner
Dim Type As String
Dim Circuit As String
Dim Socket As String
Dim StepCMDText As String
End Structure
how do i write it into a file? (also read it later
i have the code bellow to write a structure to a text file, but nothing is happening,how can i get a error message if the file doen't exist?
Imports System.IO
Imports System.Runtime.Serialization.Formatters.Binary
Public Class Form1
[code]....
I am trying to write a pre defined strcture into a binary file. how do i achieve this ?
my typical strcuture looks like
userid 2 bytes
company name 2 bytes
email address 40 bytes.
I have a variable called Valint that i need to read/write to in a script task, but it doesn't seem to work:
public class scriptmain
inherits usercomponent
dim counter as integer
dim Valint as integer
[code]....
For some reason my output is always 0
I have the following code that I am using to parse out a test file. I am getting variable conversion error in Sub Main() when I assign file = Read(). The return value of Read() is a TextFieldParser type. How do I assign the proper variable type to "file" so I can write the output to a text file?
Function Read()
Using MyReader As New FileIO.TextFieldParser("C:UsersColinDesktopParse_Me.txt")
Dim currentRow As String
[Code].....
I'm starting to write some code to run an office (not professionally). When I write the Client Class, how do I make it that the number of the client be a primary key (unique and auto incremental)? Also, I want that all the Client and Products data be stored on a txt file.
View 19 RepliesThis code get the data into the file, but no back out.Where am I going wrong?
Code: Function test() As Boolean sFileName = "Carrier.dat" iFileNumber = FreeFile() FileSystem.FileOpen(iFileNumber, sFileName, OpenMode.Binary, OpenAccess.ReadWrite)
If FileSystem.FileLen(sFileName) = 0 Then ReDim tMyStructure(7) tMyStructure(1).name =
[code]....
I'm trying to convert data from a vb6 application. Using get and put I saved a structure to a file in vb6. I'm now trying to read it into a vb.net class using BinaryReader.[code]...
View 5 RepliesI have created a program that saves the co-ordinates of the users mouse and saves it to a text file to be used as an auto clicker.
View 2 RepliesDefine a structure named product, The structure should contain 2 variables one as a string and the other as a decimal. The decimal is used to store the price and the string is used to store the item number.
Declare a module level array that contains 5 product structure variables
Code the main forms load event procedure so that it reads the item number and prices from the itemInfo.txt file The procedure should store the item numbers and prices in the module level array. It also should add the item numbers to the list box.
When the user selects an item in the list box the items price should appear in the xPriceLabel. code the appropriate procedure.
The code I have is as follows
' Project name: Glovers Project
' Project purpose: The project displays the price of an item.
' Created/revised: <your name> on <current date>
[Code].....
Seems the problem I am having is this line is returning a value less than 0.
itemprice = (itemnumber.Substring(productIndex, newLineIndex - productIndex))
Reading a .txt file in VB.net. My file path is C:UsersMyLilMulePepeDocumentsVisual Studio 2008Projectscurtain_calls.txt.
This is my line of Dim LoanOptionsFile As String = "C:UsersMyLilMulePepeDocumentsVisual Studio 2008Projectscurtain_calls.txt"
I can read the file when I run the program, but how do I write the file path so that someone else can download my program and file and read the file on their system?
Is it possible to set a variable in my custom class for Private Read/Write access and Public Readonly access without creating Properties with Get and Set? In other words, from within my class I want full access and from my form I only want read access. Right now I declare my variable as either Private or Public to control Public read/write access. I tried googling my question a bit but I'm not sure what the correct terms even ar
View 5 Repliesi'm trying to read from a file and copy the text into a 2d array withought the selected item from a list box then rewrite the file from the array into the text file. however it writes a single part of the array times the variable count when i write back to the csv file. within the array everything is correct its only when i rewrite to the file is when the problems occur.
[Code]....
i am using VB2008 to develop a Settings program for my game Lined World, creating with Game Maker. I've created a settings.ini:
[screen]
fullscreen=(off or on)
resolution=(800x600 or 1024x768)
[code]....
answers are depending on settings
now, i wanna create in the settings app the following:
"fullscreen" (radiobutton-on & radiobutton-off)
[code]....
if radiobutton fullscreen is on, [screen]fullscreen must be on, and if turned to off, the INI value should be "off".
I'm creating a project where I need to store information in two files. As I understand, I can store information in a text file or a binary file?
View 2 RepliesI am struggling with vb.net. I can read from a file but not able to establish a writing object. what I have so far is this.
Imports System
Imports System.IO
Imports System.Text
PublicClass EuroConverter
PrivateSub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code] .....
I have a DB stored on our internal site and I want to read/write this file as it's updated. How do I download the file, then upload it after changes.Here is what I know about the link
Protocol: HyperText Transfer Protocol with Privacy
Type: XML Document
Address: [URL]
I am writing a schema.ini file to be created onthe fly and want to make file name a variable but cant seem to get the brackets as required by schema.ini file
Dim fn As String = Me.OpenFileDialog1.SafeFileName
writer.WriteLine([fn])
This writes
"myfilename" without brackets
I am working on a program with multiple collections related to one another for a school project. Each collection needs to have its own defined properties and have the objects written (1 per line) to a text file.
I have all of that working.
When reading the comma-separated line from the file, I want to place one of the properties of the object in a listbox (so that all the objects' names will show up in the listbox). I think I have this part figured out...
My problem is that when you click on the name in the listbox, I would like multiple text boxes to be populated with the appropriate, corresponding properties of the particular object in the collection...is there a way for this to be done?
i have a structure of;
name
age
gender
location
then i need to read in a file into an array on the structure above, and pretend this is the file which has 3 people
george
45
m
usa
[code]....
so basically i dont get how to read in a file then put it in the array in that structure then make it into a csv file?and whats the difference between streamreader and streamwriter?
I'm looking at an old web app I wrote and it is taking about an hour to read 4500 records from a DataTable so it can write them to a CSV file.
The DataTable contains... 376 columns
At least, I think that's what Excel's NL column converts to. I just looked up the column count now and had no idea there were so many. Our software vendor hasn't realized the value of dynamic sql statements for this process, so every software "upgrade" just keeps adding more columns rather than only selecting the ones needed. I cannot alter the SQL statement that generates the data
Depending on the data type, the data needs to be formatted in a specific format Data does contains special characters, such as commas The slow part is reading the data. Getting the data from the SQL server and writing it to a CSV is fast.
Here's the code. Forgive the mess, I wrote it back when I didn't know what I was doing and when I still was working in VB
Function ReadDataTableForCSV(dt as DataTable)
Dim sb = New StringBuilder()
Dim dataTypes As New Dictionary(Of String, Integer)
[code]....
I was unable to find anything in my searches for XML or INI on the forum so i apologize now if this has already been asked and answered before.
I have been searching Google for days now, trying to find information on Reading and Writing XML files. I wish to use them to replace INI files in my programs.
I have been using VB6 for years now, but was able to get a copy of VB.NET 2003 really cheap and so i am trying to learn how to do the things i did in VB6 in VB.NET 2003.
I was able to find code to write to an INI file, but was not able to successfully read from an INI file with any of the code i found.
I have been able to find code to write an XML file, but when i try to update it, it replaces the old file with a new one, and the old settings are missing, instead of the new settings added to it.
i can at least start migrating to VB.NET 2003, or if you read XML and update XML data, i can switch now. Here is the code i have for writing XML.[code...]
I have search on google but i have just find this function SteamWriter. This fonction for writing work, but the script create always a new file... I want write under the last line.And with your fonction, how i can read it line by line for use in select menu.
View 3 RepliesI am new with VB 2008. I want to use txt file to store some parameters which is used entire of the application. I want following tasks;
1. creat the text file and give particular path where file must be saved.
2. Write values like TEXT{Tab} Value.
close the file
3.save the file.
4. open the file and read the only values and set into particular textbox on the form.
5. close the file.
Some times i need to search the particular value or TEXT. How i fullfill this task.
How Can I load data into my datagrideview from xml file
View 8 RepliesMy text file look like this;
M48
METRIC,LZ
VER,1
FMAT,2
DETECT,ON
[CODE]..............
I must read the file scan for value T250,T169,T168,T170,T176............which ever value start with T after the line"DETECT,ON". then i must sort these values so that it will be in acending order. Then i must write back that values in same text file after the line FMAT,2.. Now i can read the lines which contain T. Then i store that lines in array. My code shows error when i used sort methode to sort the array which i store in array.
This is my code
Dim filename As String = strFileName
Dim i As Long = 0
[CODE]...........
The sort methode give me this error "Overload resoulation failed because no accessible 'sort' can be called with these argument". Why it shows this error and how i write back the value after sort. Can i use append Text methde.
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.
View 4 Repliessay i have this:
[Code]...
I'm very new to VB.net, have not a clue what i'm doing. I've googled around for over 2 hours now, and can't find anything, not even something that reads the info, and displays it.