I have to create a textbox which will list down one column of datas from textfile which is separate by delimiters.But as I have to filter alt.Row from the text file, what can i do?
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I have a .txt file, with five columns - each column is seperated by a space " "
What I'm trying to do is, 1, Add column headers and 2, align the columns to make them look presentable.
For the first part all I know is how to append lines to a text file, my problem is that whenever I append to the textfile it always gets appended to the bottom.
Using SW As New IO.StreamWriter("d:\temp\test.txt", True)
SW.WriteLine("The Headers Should Go Here")
End Using
How would I append to the top of the textfile?
I am having trouble figuring out how to parse a string with delimiters. I have a text box which the user inputs data or what ever. I need to figure out how to parse the string and display it in a listbox, each word in a single line. Here is what I have so far, my book doesnt explain parsing very well and I'm stuck
View 2 RepliesI'm trying to write a jukebox application as part of my undergraduate coursework at university, and have hit a brick wall. Using while loops, I'm trying to display tracks/songs under particular genres, as listed in a simple text file, from which the programme reads.The issue is, although I can get the columns to be named after the appropriate genres, as stated in the text file, the songs are read, and placed in the first column, regardless. I can't seem to get them to move to the next column, when the previous genre is finished.[code]
View 15 RepliesI 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].....
I have a TabControl object on my form with many tabs created in code (TabPages) and my problem is that the same objects that are in the initial TabPage needs to be in the other TabPages created in code, I have this done in code when the user clicks the 'New Tab' menu option, however the same code is used for any new tabs created. The problem created here is that I have an event against one of the objects that appear in the other TabPages, but because the same code is used to create any new tab pages, the event will only work on the newest tab page, if that makes sense? By the way these objects that appear on the other TabPages are properties at the top so events can be handled against them in the respective subroutine.
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get my Price list, and my Section list to display on two separate?
View 2 RepliesI have a program that searches a textfile for whatever I wrote in the textbox. If he finds it I want it to insert into label1 the text that's on the same row as the word I searched for but only the sentence between column 2 and 14 on that row.
View 2 RepliesThis is my first time using a list vs an array but I'm having a bit of trouble. I am trying to read a textfile into a list of song objects. I am reading the file successfully into the list however after the loop ends the program stops executing the load event and ignores the populateListBox() procedure. Any thoughts.
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just another little problem here! Trying to write a quiz for a college portfolio and having trouble with writing to a .txt textfile. On one form(form4.vb), I have a listbox that picks up the information held within a notepad textfile called "usernames" which contains names of quiz users. When written in manually to this textfile, my listbox picks it up fine, however, on a different form(form3.vb), I have a textbox where a user inputs their name, this is supposed to go to the "usernames.txt" textfile to be picked up by the listbox on the other form but instead, it does not write anything at all and if there is already text on this textfile, it wipes it all out.I also have to use the application.startup path instead of the usual C:my documentents etc so i would have to begin with something like this: (Note: code is a little mixed up due to messing around with different variations but this is just a example)
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Why I couldn't have a separate list of objects of the same class?
This one works,
Dim list As New List(Of Address)
list.Add(New Address With { _
.Country = "USA", _
[Code]......
How would i read a textfile that is in My.Resources and put the whole document in a textbox for the user to see?
I figured i would need a IO.StreamReader and a IO.StringReader but cant figure out too much what to do with these.
I figured i could create a loop until it has read to the end of the document but there is no check called HasLineAvailable or something.
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?
I'm trining to loop through two separate list boxes to find a match for the textbox then display a message in the display label. Right now it just works on the first two zip codes in the $15 shipping zip code list box. Here is my code:
Option Explicit On
Option Strict On
Option Infer Off
[Code]....
when you have a textbox and you save the contents to a file : My.Computer.FileSystem.WriteAllText(SaveFileDialog1.FileName, TextBox1.Text, False, System.Text.Encoding.ASCII) and you open the file in notepad, you will see instead of multiple lines one long line and where the vbNewLine should be, a small square symbol.
the simple reason is: even if you write a vbNewLine or vbCrLf to your textbox, it will be reduced to vbLf so when writing the textbox.text to a textfile it only writes the vbLf where you would like to have a vbCrLf
so all you have to do is replace the vbLf with vbNewLine :
My.Computer.FileSystem.WriteAllText(SaveFileDialog1.FileName, Replace(TextBox1.Text, vbLf, vbNewLine), False, System.Text.Encoding.ASCII)
I've got a csv text file "test.txt" in the following format with one record per line in the following format: Builder,Bob,B,99HappyStreet,Springtime,4
I've read them into an array and in design use the first two to populate a listbox and then use a selected index to fill text boxes and some list boxes.
ex. TextBox_FirstName.Text = Employees(ListBoxMain.SelectedIndex).FirstName
How do I write the changes made in the text fields back to the position in the file where it was? It has me stumped although I'm sure there is a SelectedIndex option that can work.
I've considered having all the new/changed data saved as a new record and then just deleting the 'old' entry but my delete code gives me a selectedindex-1 index out of range exception error that I'm working on as well. I am sure both problems are related.[cod]e...
The code below allows me to write a single line to a textfile. Id like to be able to open an entire textfile into a textbox, be able to edit said text and have it automatically write back to the same textfile.
Private myCoolFile As String = "C:UserskevinMy Documentspasswords.txt" '// your file.
Private myCoolFileLines() As String = Nothing '// String Array to read File Lines into.
Private sTemp As String = Nothing '// temp String to be used as needed.
[code]....
I have some coding which displays a label if the value of a textbox matches the first value of each line in a textfile.
Dim sList As New List(Of String)(IO.File.ReadAllLines("Path"))
Dim i As Integer
For i = 0 To sList.Count - 1
[Code]...
The problem is if the textbox has 1 and the textfile has 11 it will display the label, what would be the best way around this?
I have tried sList(i).Contains etc but none of them are doing the job.
I currently have an arraylist holding many separate numbers and I need to loop through the array and change each number, the number will be changed depending on other determined settings but I can't seem to get this to work,
For i = 0 To Me.TextBefore.Length - 1
intTemp = CInt(Me.textarray)
intTemp = intTemp + intUsr
Me.intarray.Add(intTemp)
Next i
I've setup a TextWriterTraceListener which outputs the debug messages I've written to a file.This works fine however what I am trying to do know is output the content of this file to a textbox using a streamreader object.I originaly thought it may because I did not set the text file to allow read/write access so I changed this by setting the following:[code]
View 4 Repliesi know i have to use a loop to get each line of the textbox onto a newline of a textfile but i dont know how to figure out how many lines of text the user has entered into a textbox. I tryed using a try statment to loop until it errors, it seems to work sometimes but other times it only takes half of the textbox and adds it to the textfile. And if atmaweapon reads this, i tryed to make better names for variables. Here is my code,
Code:
Path = ("Meals" & ComboBox1.SelectedItem & "" & TextBox1.Text & ".txt")
File = New System.IO.StreamWriter(Path)
If ComboBox2.SelectedItem = "1" Then
[Code]....
how many line of text there are... im not so shure how good it is to run a loop tell it errors for a textfile, but its the only way i could think of.
I am trying to write a vb2008 program that allows a user to select an airport from a combobox and then once the value has been selected it searches a comma separated text file once it has found the airport selected ( always the first column in the file) in the file it populates 8 other textboxes with the row data from the file. The idea is to select the airport and then it calls up the radio frequencies associated with the airport.I assume you have to call the data into an array and the search thorough the array until the combobox.selectedvalue = the value in the array, but i am unsure how to do this Ideally I would like to be able to the user to add data to the file thats why I used a combox, but I am having trouble trying to get the boxes to populate so first things first.
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bind to a database column and show the value in a separate linklabel1 or Listbox control in windows forms.
View 4 RepliesIf I have a textbox, and I want to generate some paragraph into it, it makes sense I will want to use linebreaks.
View 2 RepliesI have created a form which has two things a list box and a button which is labeled "Input Values"The user should click "Input Values" and a new form will appear. This new form will ask the user to enter 10 values into a textbox and click ok after each value. These values are to be stored in an array and displayed in the listbox on the previous form.I am having trouble getting the values of the user to store into my array and displaying into a list box. I have this so far.
Private Sub OKButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OKButton.Click
[Code]...
I Have a textBox on a form to give me my IP address (but I have 3 anwser's going into 1 textBox) When I use a button to revile The anwser's,all in one Textbox .How can I seperate Each anwser's with a space. Code Below: (TextBox5 is the TextBox I need to seperate the Answers) [code]
View 12 RepliesWithout using a variable.i tried the [code]this code does not work it just change the text of the textbox2 but not the textbox1.
View 18 RepliesI have a textbox where the user inputs a string.
I want to take the string, and output each character into a seperate textbox.[code]...
I am playing around with VB 2010, and I want to create a separate file with different procedures etc so that I can call a proceedure etc from this file I have a simple form with a single label on it, and a seperate file called filelib.vb.In the filelib.vb is a proceedure called LogicalDriveTypes
Public Function QueryLogicalDriversNames() As String()
Try
Dim Totalstring As String
Dim ds As Int32
[code]....
In my form1_load I have Label1.Text = filelib.LogicalDriveTypes and I get "reference to a non-shared memner requires object reference. How where / what do I do to access the proceedures / functions in this other file any time I need to from this form ?
I have a windows form with a textbox bound to a data table and a PDF Viewer both in the same form. I could change the text on the textbox and the Viewer would show whatever is linked to the textbox. I am trying to create a separate form to put the viewer in but at a loss on how to link it to the textbox on the first form.
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