Load A Textfile With (formatted Mostly Tab Delimited) Data Into An ArrayList
Aug 5, 2010
[code] I'm trying to load a textfile with (formatted, mostly tab delimited) data, into an arrayList.To manipulate and extract certain data I was able to search through the arrayList and retrieve the needed data.This is what's not working: If I have found my needed data in certain places from the arrayList, I would like to split this to read the needed values. Trying to do this I constantly get string cannot be converted to 1-dimensional array of string errors. [code]
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Apr 26, 2009
I have a tab delimited text file as so :
name loan period loan amount
John 5 years 6000
Sarah 5 years 6000
Jane 1 month 100
I'm looking to copy the lines where "loan period" = "5 years" to where "loan period" = "1 month", in order to show the comparison. The new lines would be appended at the end of the resulting file. The ultimate end result I hope to achieve is this :
name loan period loan amount
John 5 years 6000
Sarah 5 years 6000
Jane 1 month 100
John 1 month 100
Sarah 1 month 100
I've been toying about this with Visual Basic .Net, and so far, this is what I've come up with
Dim strData As String
Dim i As Short
Dim strLine() As String
lngSize = 0
FileOpen(1, txtloanlistinput.Text, OpenMode.Input)
[Code] .....
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Jan 20, 2008
I am relatively new to VB. I was initially using fileopen, writeline, and fileclose to create, write to, and close a comma delimited file. But recently I attended a training course where the instructor mentioned that these old methods will be going away and I should try and use Streamwriter instead. I was successful in converting some of my code to StreamWriter when creating a simple text file using WriteLine.
For example: myStreamWriter.WriteLine(text). But this writes an entire line of text.
I cannot see to find any information on how to create a comma-delimited file using StreamWriter. My old code was something like this: Writeline(filenumber, field1, field2, field3, field4). How to do the same thing with StreamWriter?
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Apr 30, 2009
I previously asked a question about my meeting planner app, and how to delete a specific entry in the array. Someone had the interesting suggestion of using a ArrayList, instead of a normal array. I am attempting to learn ArrayList, but to no good result. I can't even get the ToString method to work correctly to write what I want it to into a text file.[code]...
My plan is to have each of those three fields to have their own entry in the ArrayList, but when it is saved to text file, those three fields are comma delimited to a line for each appointment. Of course when the text is loaded, it will have to be converted back. Can anyone point me in the right direction or have any other method of going about this with the ArrayList?
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Mar 1, 2010
How do I convert an arraylist into a string of comma delimited values in vb.net. I have an arraylist with ID values
arr(0)=1
arr(1)=2
arr(2)=3
I want to convert it into a string
Dim str as string=""
str="1,2,3"
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May 5, 2011
I'm trying to figure out how to load a textfile into a listbox. On button click it would pop up a window where you'd browse to the folder and file and then select it and it would populate the listbox.[code]...
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May 25, 2010
I'm trying to Load data from a Text file, which is "," Delimited into 6 List Boxes.. Want a FileOpenDialog Box so that the user Can chose which Office Id txt File they wont to load into the List Boxes.How it works is;
-The user Enters an Office ID (e.g HH33)
-The user fills out the rest of the program, the data is then generated into the 6 list Boxes
-User then clicks Save to File button.
-The program creates a Text file with the name coming from the Office Id, so if the user enters HH33, the text file is created with name HH33.txt.
-All Data entered by the user under the office name HH33 will be added to the Text File..[code]
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Dec 19, 2010
I have a text file, with several lines of comma delimited data. The easy part is that each item fits into the same field, so I can use a 2 dimensional array. I would like to use .net classes to do this, not the old file handling functions I was used to.How can I take the text file and load the data in the text file into a 2 dimensional array.Here is example data in test.txt
1,1,1,2,2,2,1,1,1,3,3,3,4,4
2,3,4,5,1,1,1,2,3,4,5,1,1,1
2,3,4,5,6,1,1,1,1,2,2,3,3,4
So this would go into a (14,3) array.I would like to make sure, that the array is automatically sized to the size of the data also.
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Oct 29, 2009
I receive this error using the following code when the executeNonquery() line I am trying to load data from refnum to a column in the table
The variable name '@refnum' has already been declared. Variable names must be unique within a query batch or stored procedure.[code]...
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Apr 30, 2010
I would like to know if there is a quicker way to load a text file into a listbox/arraylist than this:
Code:
Dim fileList as New ArrayList
Dim fileReader As New System.IO.StreamReader("textfile.txt")
Do While fileReader.Peek() <> -1
[Code].....
If I need to load several text files into different arraylists, especially if the textfiles have a lot of lines, this process is very slow. Too slow for my current app to work smoothly, actually.
So, is there any faster ways to load a text file into an arraylist? Or if there isn't, is there some quick way to easily access and change data that is on a particular line in a textbox, so that I don't have to load the text file into an arraylist?
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Nov 27, 2011
Public Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
OpenFileInArrayList(My.Application.Info.DirectoryPath & "/data/ck.dat", ArrayListCK())
End SUb Public Sub OpenFileInArrayList(ByRef PathFile As String, ByRef ArrayListCC As ArrayList)
Dim stream_reader As New IO.StreamReader(PathFile,System.Text.Encoding.UTF8)
[Code]...
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Jul 14, 2011
I'm trying to read and load the content from the attached text file to a arraylist with the code bellow.
but what is happening is that not all the lines from the text file are loaded in to the arraylist, the reading jumps from one line to other in the text file.
Dim FILE_NAME As String = ((My.Application.Info.DirectoryPath).Substring(0, (My.Application.Info.DirectoryPath).LastIndexOf(""))) & " est.txt"
Dim lista_barras As New ArrayList
Dim lista_barras_esp As New ArrayList
[code]....
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Jul 20, 2011
<div class="body">
I have a word document data been inserted into database as VarBinary(max) column. Now, i need to fetch this information and display in my aspx page directly.I am getting this value from database in Byte Array and try to convert that into string and add that string to a div.I am using the below two ways: In both the ways first i am getting them to a temp txt(in 1st way) and doc (in 2nd way) files and reading back those file I am using .net 2.0 frame work
Write Method:Writing data to temp file(either doc or txt based on the filepath which has filename)
Eg: filepath: "c:temp.doc"
Public Sub writeFileData(ByVal strFilePath As String, ByVal bytFileData() As Byte)
Try
[code]....
Failure reasons: I am getting the output as some symbols, prob because the server is not able to read the format of the word content.how to read the word document data in binary data to a string.
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Aug 11, 2009
I am having issues retrieving a class serialized in another application. If I put the code all in one application the set and get both work. If I separate the code into two applications the retrieval fails. Any thoughts on how to set the object to the clipboard in one app and get it back in a second one? [code]
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Mar 2, 2012
I have a modbus TCP device that I have managed to connected to through my VB source code.
I want to poll (continueously read) data from certain registers of the device, and store the polled data in a file (text,csv, excel).
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May 11, 2010
I want to load a csv file (A comma delimited text file) into a datatable. I found the OdbcDataAdapter Class which looks perfect, but it says it is supported only in version 1.1 of the .NET Framework.
Is there a better way to import a csv file into a datatable? the first line has the column headers.
I am using Visual Studio 2008, using version 3.5 of the .NET framework
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Mar 28, 2011
I am looking for a vb.net library where I can insert data into an object and have it spit out a json formatted string, and also take the string in again to rebuild the object.I am not that concerned with mapping it to preexisting objects.I have searched around and every single library I've found either can't read the strings in again, interprets them as one long string instead of breaking them up into parts, or fails to work entirely (asp.net can't even find any public members).
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Mar 20, 2007
I have ran into an issue where I need to save some Excel data to a semicolon delimited file. (Why is an issue unto itself) And I can not find a way to do this using VB. In excel I can use Import Semicolon delimited files but I can not find a way to save them. Is there a VB constant or method I can use to save semicolon delimited files without having to write my own save procedure to format the data? such as the xlCSV, xlDIF, xlTextMSDos formats. I would think that since it can import this format that it should be able to save it.
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May 7, 2011
So i'm new to working with vba in access and i'm having trouble getting this code to work. What it is suppose to do is take a selected text file and read the original file into a list box. Then there is a second button that when pressed will convert the text file from a pipe delimited file into a tab delimited file and then show the changed file into a new listbox.
Option Compare Database
Option Explicit
Function GetFilenameFromPath(ByVal strPath As String) As String
[code].....
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Sep 4, 2009
I've created a table in SQL and inserted specific information into it programmatically. Now I need to export this whole table data, including headers into txt file (tab delimited)- from within Visual Basic project (Windows type application).
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Jun 18, 2009
I have written code to pull some data into a data table and do some data re-formatting. I need some help splitting some text into appropriate columns.
CASE 1
I have data formated like this that I need to split into 2 columns.
[Code]...
column is the first 11 characters That is easy.column 2 should contain all the text after the first 11 characters up to but not including the first number.The last column is all the text after column 2
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Jun 3, 2010
I have a PHP Page that displays airport information in a list in the following order
[code...]
Using that delimited method of ";" then a break, how can i put all of those into a combo box. There are a few hundred.
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Jan 15, 2012
What I'm working on now is a basic telephone directory.a Directory text file contains the names of all of the subdirectories.The subdirectory files contain the names and numbers of all of the students/employees etc.Anyways. I've actually completed the program itself I just need to get the output formatted properly.Which leaves me with my problem. I want to output the data to some sort of grid. I'm going to assume DGV since it allows my to name columns(the column headings are simple: Name and Phone number)However, I cannot figure out how to take data from a textfile and throw it into the DGV. I know how to do it for a listbox, But I don't want a listbox since it isn't a grid. is there any way I can read my textfile data into an array and then iterate the data and output to the datagrid?
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Oct 18, 2010
I am trying to create a textfile and write some lines into the textfile. However, the code that i am using can only write when the textfile is already created in the directory.
For this case, can i actually allow my script to search if a textfile is being created, if not create a textfile ???
Dim pathdir As String = "C:workingdir est.txt"
If System.IO.File.Exists(pathdir) = True Then
Dim objWriter As New StreamWriter(pathdir)
[code].....
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Jun 4, 2012
I used this code for getting data from delimited text file into access database in VB6 and it is running Perfectly Same thing i want in VB.NET using OLEDB. So can anyone suggest me what code should i use..?
Other info:
Database = mydatabase.mdb
Table Name = SUBSCRIBER
4 Columns = NAME,AGE,GENDER,ID
Text File = temp.txt
[Code]...
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Mar 11, 2010
I've made a browser project and beyond making it a default browser, I am having a problem with the Favorites feature TreeView control saving, loading and repopulating it with the users data. It's tough finding the correct code as there are so many variations of this control in various languages, but I did find sample code for loading and populating the TreeView with a text file using tabs to signify the node structure in VB.Net. (Most others I have found are VB6 or some other variation.)
[Code]...
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Dec 1, 2011
What I am doing is iterating through all the groups that belong to the top group (Generic reports). Then I take advantage of the GroupPrincipal.GetMembers(True) which will recurse through a given group name. I test to see if the user exits under that group and if true I put the group name in an arraylist.
I use the for each principal in GroupPrincipal.GetMembers to loop through each returned user to see if they exist.
Is there a way to put all the returned users Principal.Name from a given group in GroupPrincipal.GetMembers into an ArrayList? This would allow me to to use Arraylist1.IndexOf to search for user. Which would be much faster then iterating through a returned list using the for each construct.
Sub RetAllMbrs(strUser As String)
Dim oPC As PrincipalContext = GetPrincipalContext() '<- this is function somewhere else in the code
[Code].....
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Jan 11, 2012
I have a problem in Treading.I have a code like this;[code].....
I want to change ListBox1 with ArrayList. But I couldn't find how to use adding a string to ArrayList in tread.
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Sep 2, 2011
What I am trying to do may be better for use with SQL Server but I have seen many applications in the past that simply work on text files and I am wanting to try to imitate the same behaviour that those applications follow. I have a list of URL's in a text file. This is simple enough to open and read line by line, but how can I store additional data from the file and query the data?
E.g.
Text File:
link1 - 0
link2 - 0
link3 - 1
link4 - 0
link5 - 1
Then I will read the data with:
Private Sub ButtonX2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonX2.Click
OpenFileDialog1.Filter = "*txt Text Files|*.txt"
If OpenFileDialog1.ShowDialog() = DialogResult.OK Then
Dim AllText As String = My.Computer.FileSystem.ReadAllText(OpenFileDialog1.FileName)
Dim Lines() = Split(AllText, vbCrLf)
[Code] .....
Am I going completely the wrong way about storing the data after importing from a text file?
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Jun 30, 2009
I have a problem with reading data from a textfile called RESORT.TXT
Barb Allen
604 777 1234
2008/12/01
2
3
1
3
D
I can't seem to figure out the datatype for the phone number? It displays in my listbox, but I only recieve the number 6 and the not the full listing of the phone number 604 777 1234.
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