Reading TXT File And Display Into ListBox Generate Empty Item
Aug 19, 2009
I am reading a txt file and displaying the contents into a listbox but it generates an empty listbox item at the bottom of the listbox. I am splitting the textfile each time it finds a new line in the txt file;
.Split(vbNewLine)
The problem there is always a blank line in the txt file at the end and so generates a blank list item. How can I remove this blank list item from the listbox? Is it best to try to remove the blank line from the txt file first or the empty list item from the listbox after the file has been read?
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Aug 7, 2010
Is it possible to select an item in one listbox and then display the data of another listbox with the same indexed position? I am planning a project and this is something I would like to attempt but I haven't figured out how to do it.[code..]
I tried doing the above code but instead of displaying the listbox text the message box just returned false.
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Aug 26, 2011
I have a "simple" question how can I get the first letter of the selected item in a listbox and put it in a textbox?
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Sep 12, 2010
I habe a little problem with my code. After 4 years, I must now expand and adapt an old program with new features for Windows 7.I use the great snippet from Chris to query the members of a active directory group.Now I want to use a selected item from the Listbox for a further search, but it doesn't work. I check the selction with a Textbox, but I get an error message:"Invalid Conversion from DirectoryEntry to String".[code]Until now I was able to read the selected items from the listbox in a Textbox or a query.
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Jun 2, 2011
I have a list of files to read and have to append them all to one unique file. the problem is that when i open the first file to read. I read the first line and discard it. when i read the second line, its empty, but it is not in the original file. what im doing wrong? [Code]
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Dec 12, 2011
I would like my code to search through a listbox looking for "QB". Once found display message then stop. Write now my code continues to search through the listbox after. How can i change the way that i am searching the listbox?[code]....
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Jun 13, 2010
I am reading from a textfile. How can I skip a line if it's empty?
Or is it possible to delete at the beginning of ReadAllLines to remove this empy lines.
An empty line would be following:
text1
text2
"empty line"
text3
[Code]....
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Feb 25, 2009
I need to display a listbox, but i want to select only one item using radiobuttons. I was looking for info about checkedlistbox, and found some routines that deleselect one item if i check another, but i think is wrong the use of checkboxes (designed to multiple selections) to select one value. Radiobuttons are more suitable for this task, but i dont know how to put the radiobuttons inside a listbox (items are variable, i retrieve that list of items from a database, and populate in run-time).
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Jun 30, 2010
I'm making a program that can search for all .JPG files and display them in a ListBox. Now I want it to display the selected ListBox Item in the PictureBox1.I have tried many codes but none of them worked.The files in the listbox are listed like this: C:\Documents and Settings\My pictures\ Image01.JPG.
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Jun 21, 2010
I'm making a program that can search for all .JPG files and display them in a ListBox. Now I want it to display the selected ListBox Item in the PictureBox1.
The files in the listbox are listed like this :C:Documents and SettingsMy picturesImage01.JPG
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Jan 6, 2010
How to make it where I highlight a item in a listbox, then press a button, and it goes to the next one down? Also, how do I make a If for if theres no item when it goes +1 then make it display a message box like "End of the list"?
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Feb 16, 2010
How could I link a Listbox to a Textbox? So each Listbox item holds string data, and when I click that Listbox item, it shows it's string data into the multiline Textbox. For example
I have a listbox item names "Numbers". It holds this data:
1
2
45
84
So I want it to when I select this item in the listbox, it display the number data into the multi line textbox.
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Feb 12, 2012
I am starting to learn reading and writing to textfiles. One quick problem. My code here
'Read is the variable that will read the kp.txt file"
Dim read As IO.StreamReader
read = IO.File.OpenText("C:2/kp.txt"[code].....
however when it is read into the listbox those 3 words appear on one line in listbox
How can i make it so that each line of the textfile is placed in each line on the listbox?
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Dec 26, 2009
I have a form like that: What I need to do is when the user selects item1 from combobox a message will be displayed in listbox. My combobox has 11 items so I must have 11 appropiate messages to be stored automatically in listbox . (The message is appropriate of what item is selected from the combobox)
Here is the full code implemented :
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
Dim msg1, msg2, msg3, msg4, msg5, msg6, msg7, msg8, msg9, msg10, msg11 As String
If ComboBox1.SelectedValue = "Item1" Then
msg1 = "Ati ales item1 din combobox"
[Code] .....
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Mar 23, 2011
The problem is that it only adds to the text file it's suppose to read from, but instead of adding 4 strings into my listbox. Can someone figure out what's wrong with my code, and provide me the correct syntax for it. This is in a sub after click of a button in vb.2008.
[code]...
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Apr 22, 2011
[Code]...
The Textbox.Text will be a new Item in ListBox when Button1.Click I want button2.click to pick a random item from the listbox and display it as the label. Think of it as a random raffle picker lol.
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Jun 21, 2010
Well i got my codes so Checkbox and Textbox to read ini but i cant find how to make ListBox read ini like each line in the ini is 1 item on the listbox.
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Aug 4, 2009
1, Mulroney, Brian, 4000, 3, 259.2500, 300.00, 1265.7500, 75, 20002, Schreiber, KarlHeinz,8000, 1, 2227.0000, 2400.00, 10873.0000, 300, 160003, Clark, Glen, 4500, 0,12.3750, 337.50, 1525.1250, 75, 22504, Harper, Steven G., 20000, 3, 0, 0, 0, 0, 0so what I want to do is I wanna insert the four last names in the combobox when reading the file and displaythe data regarding each name in the listbox. so when you click on each last name in the ombobox, you can display the corresponding info for it in the list box..so my problem is1)I can only read one of the lines in the file(only for one last name). and therefore only one last name appears in the combobox.how do I read and insert the other three lines at the same time?
Private Sub mnuFileOpen_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles mnuFileOpen.Click
Dim FromFile As String 'To name any file that is to be opened
[code]....
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Mar 20, 2009
I need to read the contents of a text file to a list box. The coding I am using at present is:
Imports System.IO
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code].....
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Aug 25, 2006
I have a "Form" with:
1- List Box
1- TextBox
3- Button
1- OpenFileDialog
1- SaveFileDialog
I want that clicking the btn1 it shows the OpenFileDialog and read file that it has got this structure: SKI10 1 71 0 0 18 101 19 0 29 101 30 0 40 101 41 0 50 101 51 0 62 101 63 0 81 101 82 0 95 101 2 0 0 95 165 3 0 1072 01 4 2 1 93 15
I want that it reads all Line of the File and it add an Item in ListBox for line.For example the first Item of the ListBox in this case is
SKI1
And the 2th Item is in this case.
0 1 7
I want using the StreamReader classes.And i want that when i click an Item of the ListBox it shows the Text in the TextBox and I can edit the Line and that clicking antoher button the Item will come updated with new Text of the TextBox.I have also another button for saving the Mod.I can use the AppendText and it create a new file writing ListBox1.Items line for line.
If SaveFileDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then Dim file_esistenteD As StreamWriter[code].....
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Jul 5, 2010
In my application I have a listbox and SelectionMode should be MultiSimple because users need to see which items they selected. In another tab we have another listbox this one should show all the selection users had done in first tab. Private Sub
[Code]....
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Mar 6, 2010
I'm trying to read multiple values from a registry subkey in the CurrentUser key. I need to display these values in a listbox with multiple lines. I so far can only get one of the values from the subkey. I know (or at least I think I know) that I need to list the values in a string (with a possible loop), and then just display the string to the listbox. The subkey is the TypedURLs under CurrentUserSoftwareMicrosoftInternet Explorer Typed URLs. Here is my code I have so far (I did a year of basic VB as part of my Uni course).[code]
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Jun 3, 2009
This is my code:
Dim lngLines As String
Dim sr As New StreamReader(opdFileAudio.FileName)
While Not sr.EndOfStream
lngLines = sr.ReadLine
If lngLines.Contains("x") Then
lngLines = sr.ReadLine
[Code] .....
At the moment I want to read all lines in text file to a list box but I don't add strings x, and string y to listbox, and looping in.
lngLines.Contains("y")
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Jul 11, 2011
Basically my problem is that I want an item from the listbox to open the file (containing the name) with the native application for the file extension when the 'Open' button is clicked.
[Code]....
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May 7, 2012
I have an Address Book project with a listbox. The listbox is bound to the database via the little arrow pop-up box in the corner of the listbox. I have the DisplayMember set to FirstName, and obviously only display the First Name of the contact in the ListBox. Is there an easy way to change it so that it displays the First and Last names? I can't change the binding because I need it to get the ID of the record selected.Here's the basis of my code...
Private Sub MainForm_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'CompanyDataSet.Contacts' table. You can move,
[code].....
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May 14, 2009
I have a DataGridView that has some columns with dates. It binds to an in-memory Datatable which gets loaded from an string array of data passed back from the backend Some of the rows returned have nulls for the date columns. Solution 1: If I define the Date column in the DataTable as "string" I can easily convert those nulls to empty strings and display it in the grid as empty strings (desired results). However, if the user clicks on the date column header to sort by date, it doesn't order the rows as you want. You get a purely string sort order. Not acceptable
[Code]...
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May 17, 2009
I have a form with a listbox. I'm adding items to the listbox through a file that I saved. When I open the file, I want each line/string in the file to go in as a separate item in the listbox. I've gotten it to work so far but only with 1 string. I need to loop the part where the file is being read to be able to add all the strings that are within the file to the listbox. How do I do this? So far, this is the code I have:
VB .net
Private Sub OpenToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenToolStripMenuItem.Click OpenFileDialog1.Filter =
[code].....
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Jan 23, 2012
I am trying to delete an item from a text file based on if an item appears in a listbox but keep getting an error " Index was out of range. Must be non-negative and less than the size of the collection." The line it is returning the error on is the the first IF statement of the below text.
Code:
Dim Lines As new List(Of String) (IO.File.ReadAllLines("Carl.txt"))
For i As Integer = 0 To Lines.Count -1
If Lines(i).Contains (listBox1.text) Then
Lines.RemoveAt(i)
End If
Next
IO.File.WriteAllLines("carl.txt", Lines.ToArray)
End If
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May 20, 2009
I'm trying to add a code,so that I when an item in a listbox an apllication will be run.A user inputs a name for the listbox eg "hello"Then the user specifies the path of the file to be run. The name will be fixed.eg : test.exeIf the user then says the file test.exe is locted in C:mygame, he will point to that path.NameGame = textbox name where user inputs the name that should appear in the listboxSearchbox = textbox to allow users to search through the listboxEntryBox = box where the path appears, just for checkingI know I can load a folder with this :
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles LoadFolder.Click
Dim FolderBrowserDialog1 As New FolderBrowserDialog
[code].....
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Mar 15, 2009
I've been pondering upon my idea on how to create/update a text file using each item in a listbox as lines, but I fail each time. I've searched this forum as well as my friend, Google. Still nothing.
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