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.
View 3 Replies
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")
Allow each item to use multiple lines in a Winforms Combobox (or Listbox)
View 1 Repliesi have a listbox which can be updated. and another listbox with some denominations concerning the first listbox. i am populating the listbox directly from the database. each item in the first listbox have many denominations given in the second listbox. the problem is when i add new items into the database, the items of the first listbox repeats. so in ma updated listbox, the items get repeated. how can i avoid this repetition.
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On my form is a listbox. When the user clicks insert (in the menu) then I add a blank item in the listbox. The user then enters the data and then I want to update my listbox with the value(s) the user entered. The problem is that I don't see the update in the listbox, unless I reload it from the database. [Code]
View 1 RepliesI have written a simple script to get a bunch of lines from a text file (they will be filenames eventually) which are split by new lines and puts each one into an array..
Dim ary() As String
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If My.Computer.FileSystem.FileExists("C:MenuFiles.txt") Then
[code]....
The only thing I can do for now is either use the substring function to remove the first character from all array values after 0 but I don't like that because it's messy and what if the split "works" as I want it to one one of the lines and knocks of the first character when I don't want it to.
I have a text file containing lines of data (File 1). I need to delete all the lines in another text file (File 2), which are found in file 1.So I could read file 2 line by line. And then once the line has been read, read file 1 line by line to search for a match. But that's going to be painfully slow.Or I could read file 2 into memory. And then read file 1 line by line and REPLACE the lines in file 2 with nothing, therefore deleting them. File 2 could be 100 mb, so I'm not sure about reading it all into memory.
View 16 Replieshow can i automatically update my value when a user changs the listbox item. At the moment i have a button click when the user changes the list box item and press the button the values get updated, everytime the listbox item get changed i have to repeat it click the button to update the value. I want something where automitically as soon as the listbox item selected the total value in the text box to change without clicking the button:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If ComboBox1.SelectedItem = "Seafood" Then
TextBox1.Text = 3.5 * ComboBox2.SelectedItem
[code]....
i have created a program to view images in a picturebox, i have created two list box's one for folder names/image areas to group certaint images and the second listbox to list the number of pages contained in the image folder/area. when the user creates a new image area, he or she can name it whatever they want, when they do that i would like to create a folder in the c drive for instance with the same name as the image area, and i would want it to create a .txt file aswell to keep memory of what they have done, so when they come back to it the next day they can just carry on from where they left off.
View 14 RepliesI have a GridView with image buttons for selecting rows. I am using an OnRowDataBound event to color selected rows Blue:
e.Row.ForeColor = System.Drawing.Color.Blue
Now that works great as long as I don't set a color either in the CSS stylesheet or on the grid Items themselves. If I do that, then all rows are colored that color and I don't get my Blue selected rows color for selected rows. I would like to color the text in the grid something other than black.
i'm doing a desktop application using VS2005 with MSSQL 2005. i have a problem with the where clause in the update statement while selecting the listbox item. this is the code for the listbox in load page:
[Code]....
and this is my update query in the delete button event handler: mySQL = "update Appointment set recordStatus = 'deleted'" how do i put in the where clause in when i have 4 columns in the listbox? so can i do this with listbox or have to do with datagridview?
I have a list box on the form which functions as a copy/paste. When you copy something, it is automatically added to the list box as a "clipboard helper". Here is the problem,however: if the text is more than 1 line, the list box does not show all the text.It ends up looking messy.So getting back to my question, is it possible to make the list box item height for an item depending on the amount of lines that item contains?This is a one line sentence in the list box and should take up one line.This is a multi line sentence in the list box and should take up two lines for item height.
View 11 RepliesI trying to make a code to Delete and Update Access 2007 database after remove a selected item from a listbox in VB 2008. [using "Remove" button that i create] pervious i already make a button to View data from database and Remove from listbox. but i don't know how to delete and update in database.
The code i using now:
CODE:
In the database, i have ID,Name and Age (simple database)
i have 2 list boxes.. Qty and Cost both of these are populated from a sql database. The code is suppose to read through the listboxes and multiple the Cost by the Qty and then replace the Cost with the new result. The Cost listbox is populated with the cost of one item. The reason i am not doing this calculation in the sql query is because the sql query is very complicated filter out a bunch of stuff to show just the qty of the item...
[Code]...
OK here is what it looks like when it saves
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remove blank lines from listbox?And remove specified text from listbox (text line that i can specify in form code(But if i specify to remove line something like [URL] it will remove the line [URL] but doesn't remove line [URL].
My code for adding items to listbox is:
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim PageElements As HtmlElementCollection = WebBrowser1.Document.GetElementsByTagName("img")
For Each CurElement As HtmlElement In PageElements
[code].....
I'm trying to create a small program that will import a list of IP addresses from a text file into a list box and then run a continuous ping on each address (from the list box) and display the results in a label using backgroundworker. The idea is to have a small visual display of the status of network devices.When I try to use a list item I get cross-thread errors.[code]
View 7 Repliesi have a list box which is populated with the sub folders from a user selected folder, so the listbox item count varies from 2 item to 1000 items etc.The list box code i use to do this is:
Dim lb1s As String = Form1.Folder.SelectedPath
Dim di As New IO.DirectoryInfo(lb1s)
Dim mydirInfoArray As IO.DirectoryInfo() = di.GetDirectories
Im trying to make a feature were on a button click the app will create 1 folder for every item on the listbox (named after the list box item)So if theres 3 items on the list box for example:
001
002
band 3
[code]....
And when the user presses the button, the app will create 3 dupe folders (Only the folders, not the contents) in a user selected directory using the same names, ive been tinkering for a little while but cant seem to figure out a way to implement this.
I am using file.readalllines to read the file into a string, then using listbox.items.addrange and splitting by vbcrlf to insert the items. Is there a way to reduce the lag it causes for loading huge lists?
View 6 RepliesI have some lines of text in a listbox that I need to format. The text originally looks like this (on one line):
GND,CAL1.2 CAL1.3 CAL1.4 CAL1.5 CAL1.6 CAL1.7 CAL1.8 CAL1.9 CAL1.10 CAL2.2 CAL2.3 CAL2.4 CAL2.5 CAL2.6 CAL2.7 CAL2.8 CAL2.9 CAL2.10 CAL3.2 CAL3.3 CAL3.4 CAL3.5 CAL3.6 CAL3.7 CAL3.8 CAL3.9 CAL3.10 CAL4.2 CAL4.3 CAL4.4 CAL4.5 CAL4.6 CAL4.7 CAL4.8 CAL4.9 CAL4.10 CMS1L.2 CMS1L.3 CMS1L.4 CMS1L.5 CMS1L.6 CMS1L.7 CMS1L.8 CMS1L.9 CMS1L.10 CMS1U.2 CMS1U.3 CMS1U.4 CMS1U.5 CMS1U.6 CMS1U.7 CMS1U.8 CMS1U.9 CMS1U.10 CMS2L.2 CMS2L.3 CMS2L.4 CMS2L.5 CMS2L.6 CMS2L.7 CMS2L.8 CMS2L.9 CMS2L.10 CMS2U.2 CMS2U.3 CMS2U.4 CMS2U.5 CMS2U.6 CMS2U.7 CMS2U.8 CMS2U.9
I need to format it (if it's more than 13 names), then add it to another list looking like this:
NET 'GND' R1-2 R2-2 R3-2 R4-2 R5-2 R6-2 R7-2 R8-2 L1-2 L1-3 L1-4 L1-5 L1-6 L1-7
NET 'GND' L1-8 L1-9 L1-10 L3-2 L3-3 L3-4 L3-5 L3-6 L3-7 L3-8 L3-9 L3-10 L4-2
NET 'GND' L4-3 L4-4 L4-5 L4-6 L4-7 L4-8 L4-9 L4-10 L7-2 L7-3 L7-4 L7-5 L7-6
NET 'GND' L7-7 L7-8 L7-9 L7-10 L2-2 L2-3 L2-4 L2-5 L2-6 L2-7 L2-8 L2-9 L2-10
NET 'GND' L6-2 L6-3 L6-4 L6-5 L6-6 L6-7 L6-8 L6-9 L6-10 L5-2 L5-3 L5-4 L5-5 .....
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What im try'ing to do is when a ListBox item is selected and the value has been given with a NumericUpDown box and the ''Add to orderlist'' button is clicked that it saved it to a file called "orders.txt", not at startup but when the first order is made.
Some requirements:
U can't order the same thing twice ( only edit it within the editor ).
The "orders.txt" has to open on a TextBox1 at Form2 ( the text editor ).
And the user can only change the order amount in the edit program.
Example:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
ListBox1.Items.Add("7226218; Hemlock; 22.55; 0")
[Code].....
1.In my program I have 2 textboxes.In first textbox user need to put some number.Let's say he put number 10, then in other textbox program need to write numbers from 1 - 10, like this:
1,2,3,4,5,6,7,8,9,10
If he put 20 in first textbox, in second textbox it should be:
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20
2.I need to do this...Import text file to listbox.Export items in listbox as text file.
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].....
I cannot figure out how to add an item to a listbox with a specific value. I am able to add a text description without any problems, but how can I give it a specific value?
View 13 RepliesIn simple terms, I want to compare the value of a databound listbox display member with another string. However; I need to convert the listbox databound items to an array first as I may have to do 1,000's of comparisons on this.
I have a databound listbox from a sql server table that populates fine. I'm trying to retrieve the display value of a listbox item without selecting the item. My goal is to compare items in listbox1 with items in listbox2 and if item is in listbox1 matches an item I want to load into Listbox2, then I do not add the item to Listbox2. Listbox 2 is not databound but contents I'm loading come from a datatable.
So, I iterate through the items in listbox2's datatable but as I'm adding the items from the datatable to the listbox2, I check if the item exists in listbox1. The data that is being compared is the Displaymember of Listbox1 and a string value I want to manually load into listbox2.[code]....
Im trying to get the Text of a Item that is in a listbox. I basically want to use
MsgBox(ListBox1.SelectedIndex.ToString)
But instead of getting me an integer, I want it to give me the Text of the selected Index/Item
i have 5 textboxes in a form. I have a streamwriter that writes all of their text to on text file like this:
Code:
Dim xfile As String = Application.StartupPath & "/Set.txt"
If File.Exists(xfile) = True Then
Dim writex As StreamWriter = New StreamWriter(xfile)
[code]....
I was wondering how to get the text under the each number and place it in the corresponding textbox.
l am trying to do this listbox1.selected item.text =textbox1.text.l am using vb.net 2010 , that syntax doesn't work.l just want to be able to change an item text in a listbox using a textbox.
View 4 RepliesIm trying to remove a certain bit of text from my listbox item..
heres my code..
If ListBox1.Text.Contains(".zip") Then
ListBox1.Text = ListBox1.Text.Remove(".zip")
End If
and when i start it and it tries to remove it, it comes up with an error saying
Conversion from string ".zip" to type 'Integer' is not valid.
ive tried, this code..
If ListBox1.Text.Contains(".zip") Then
ListBox1.Text.Remove(".zip")
End If
I have a listbox that contains a bunch of email addresses from a SQL database.I have some code that I use to send an email with some values from my app.How can I loop through my list box and grab the email address to use as my mail.to.add(emailaddress) string I have this and it loops twice because Thats how many addresses I have in my test listbox.
For i = 0 To Me.lstbxEmailListR.Items.Count - 1
Looking for a line of code that I can use to set a string to the listbox text
next
I don't need to use a listbox, But I figured it was easy to use to grab the email addresses from my DB.
