I'll use this image to illustrate my question.
[URL]
Basically, how would I go about it searching through the listbox for "String 4" and then a messagebox coming up?
But, if it doesn't find that string an error message comes up.
I'm trying to compare the selected item in a combo box to the items in a collection in search of a match. There is guaranteed to be a match because the combo box was originally populated from the same collection. This is the code I'm using:
[Code]....
This code works for other collections but not for this one. In this case, the loop stops after the first iteration, regardless of what's selected in the combo box. I have confirmed that the collection contains the correct data and that there is a match for the combo box options. The only difference between this instance and other instances is that the values in the collection and in the combo box contain a double quote at the end. I suspect this is what's causing the error. (To be clear, there is no error message, it's simply not returning the correct value.) I've tried various string compare methods but none of them have fixed the problem.
Hopefully this question will have an easy answer; I've tried searching for the answer myself, but I don't know what to search for (I don't know what you would call this).
Is there a way to compare a string to see if it matches more than 1 value?
[Code]...
Below two which is the best practice to compare strings...
If "A".ToLower = "a" Then
'....
End If
If String.Compare("A", "A", True) = 0 Then
'...
End If
I have the following
Dim input As String
If e.KeyCode = Keys.Enter Then
[code].....
I have two array list same size, depending on the information gathered by previous functions. The size of the arrays range from 2 - 45 in length, both arrays always have the same length. I am trying to match one string in one array to another string in the second array. When they match then add Item to List.
Here is my
Do Until i = Arraylenght
info = Replace(myAL(s), " ", "")
SortedArrayList(m) = Replace(SortedArrayList(m), " ", "")
SortedLine = Split(SortedArrayList(m), "Price=")
If myAL(s).Contains(SortedLine(1)) Then
[Code] .....
This code works up to an array of not more then 4 in lenght, when working larger size array then 4, the minute it get to 5 I get this Error:
Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index
I have two lists of strings. One is a list of all students in a class and the other is a list of students in the class that completed an assignment. The two lists are part:whole. So we have two loops for copying elements and displaying them in a list box for only the students who did submit.
Dim f As Integer
f = 0
Dim h As Integer
h = 0
While (usersinclass.Count > f)
h = 0
While (usersidthatsubmittedassingments.Count > h)
[Code] .....
What I need is the remaining portion of the "usersinclass" list. (i.e. The students who did not submit). I tried an Else statement BUT with nested loops, every element is guaranteed not to match at least once, so I was getting elements that shouldn't be there. So, is there anyway to run the given lists against each other again to pull out the remaining students? (preferably with no repeats).
Just wondering if anyone knows why does my authentication server fail at comparing strings? Also is there a better method of comparing strings than what im using below? User types in a textbox then sends text to server, server then checks it
[Code]...
I have five listboxes that are populated from five different datasources basically I have connected to an MS Access database and I am running SQL queries effectively so the five listboxes are populated via datatables for example dtInterests, dtHobbies, dtMovies, DtTV and dtMusic my question is how would I compare the values that are being stored in each listbox I want the application to check each of the five listboxes and if the value is the same (in my case the valuemember is the customer id) then store the result somewhere (in a textbox)
View 5 RepliesI cant seem to think this morning.I am trying to compare version strings. These are scraped off a website...
examples:
4.5.0.55
4.2.2.128
4.5.0.37
5.0.0.713
how do i make sure I am grabbing the highest version?right now I have it checking the length, if less than 9 .. add a zero. then remove the .'s and convert to an integer. then just check. I know thats not the best and most accurate.
I am binding values to list box but string not showing in proper format.
ex my strings like
abc 10
abcd 20
asdfas 30
I made fixed length to first string that is 30 using padding
str1.PadRight(30) + str2.PadRight(2)
then also I am getting values like that
abc 10
abcd 20
asdfas 30
how can I put same space between string
I am trying to compare 2 strings from 2 listbox's, sort of a fuzzy match then output the results in a treeview I'm trying to tell it to split the words where spaces appear such as "The Dog Went Up The Hill",So that would see that as 6 words and then compare that to listbox2 which may contain "the dog went up the hill last night" which would the return an 80% match,but i just can't get my head round this, here's my code.
Private Sub Compare_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Compare.Tick
If ListBox1.Items.Count = 0 Then
[[Code].....
I am doing this assignment on a Math tutor program and I am stuck at one point.First off the listbox needs to show the equations for the number entered between 0 and 12 example:
1+1=2
1+2=3
1+3=4
1+4=51+5=6[code].....
I don't understand how to get that information into a list box.I am also stuck in an infinite loop somehow i think because nothing shows up at all in the listbox and the number the user enters should at least be there. I am assuming the code should be more like
lstbox.items.add(decNumEntered("+1 =")
Option Strict On
Option Explicit On[code]............
before you see any of this, you will have made a text file (dont ask how)
the text file will contain html with an unknown number of lines
(the user will click a button to add a new line to the file, so the number of lines depends on the user
each line will look like this:<a href="www.link.com"> text </a>[URL].. is just a place taker for what the user would have written there as well as "text"
[Code]...
Say I have a List(Of Tag) with Tag being an object. One member of Tag, Tag.Description, is a string, and I want to make a comma-separated concatenation of the Description members.Is there an easier way to do this than to read the Description members into a List(Of String) and then use the Join function?
View 2 Repliesso using the webbrowser control, im trying to grab text from a webpage and have them listed into a list box
The webpage contains nothing except the following "red, blue, green". There is no html, just those three words separated by commas, and saved as a .htm file.
I can retreive all items in my notepad but when I am adding them up in my listbox, and trying to print them in the console. I can only display two strings. I don't know why. My string is a combination of a name, space & score. ex: "luke 300". That is the pattern of all strings per line in my text file. I am separating the name and the score using space as the indicator. When ever a space is found, string before and after the space is retrieved and added to the listbox
Here is my
scorelist = New ArrayList
reader1 = My.Computer.FileSystem.OpenTextFileReader(My.Application.Info.DirectoryPath & "scores.txt")
[Code].....
I have this list
email1@hotmail.com
email2@aol.com
email3@yahoo.com
and I need to sort them like this
email2@aol.com
email1@hotmail.com
email3@yahoo.com
instead of sorting from the first characters from a to z, I want to sort the characters after the "@" symbol in the email.
For Each item As Object In ListBox1.Items
If item.ToString.Contains("http://" Or "www." Or ".com" Or ".net" Or ".org" Or ".biz") Then
I want it to check if item contaisn any of those, then it does something.
Quite simple but I'm having the hardest times trying to write something that'll do what I want. I have 1 listbox with 3 pre-defined strings each in their own index. I'm trying to search through a textbox to see if any of the strings in my listbox were found. So far I have no compatible code so I seek help from the professionals.
View 5 RepliesI have made a little application for me and my friend to be able to chat with eachother, but now we have some unclear strings as you can see on the image below:
I would like to change for example the username or time date to a color or make it bold, could anyone tell me how to change ONLY that and not everything? I'd love to have such a thing as it makes the whole application way 'clearer'.
how to Compare text box text with listbox items text in vb.NE
View 3 RepliesI am working on a UDP Client/Server, and currently i have them sending back and forth strings, which i convert to bytes, and then open the bytes to read. I want to now send an Object instead of those strings, which includes multiple unsigned integers and strings.
View 39 RepliesI have a list of strings. For each string in that list, I want to prepend another string. I wrote a method to do it, but I was wondering if there was something already in .NET I could use to do this. It seems like something that could be built in, but I was not able to find anything.
Here is the method I wrote:
Private Function PrependToAllInList(ByRef inputList As List(Of String), ByRef prependString As String) As List(Of String)
Dim returnList As List(Of String) = New List(Of String)
For Each inputString As String In inputList
returnList.Add(String.Format("{0}{1}", prependString, inputString))
[code].....
It works, but I would rather use built in functions whenever possible.
I'm migrating from VB6 to VB.NET, in hence my questions below:
I have to write a function that returns array of strings.
How can I initiate it to empty array? I need it since I have to check if it's empty array after it returns from this function.
Is list of arrays better for this purpose? If I use a list - Is it empty when it firstly defined? How can I check it it's empty?
I have the code below on a timer( "b" is a bitmap )
If
Not (Clipboard.GetImage
Is
Nothing)
[Code]....
The problem is that it raises the event even if the picture didn't change.
comparing the 2 images without actually comparing them pixel by pixel (too slow to do the job)?
I have been looking for examples to find the string between two strings. This top one works fine;
Public Sub ReadData(ByRef keywordStart As String, ByRef keywordEnd As String, ByVal filename As String)
Using reader = New StreamReader(filename)
[Code].....
Now the first one is fine - Ext_Volume is result of the string between the strings <Volume> and </Volume>. <Volume> and </Volume> are unique so this is straight forward.
However the second one - "^FDExp:" is unique, but "^FS" is not unique. There are occurances of "^FS" before and after "^FDExp:".
How do I get the string to search AFTER the occurrence, not before etc?
Dim str As String
Dim str2 As Array
str = "blabla duhduh"
str2 = str.Split(" ")
Say the string is something like
bla bla bla bla (cat) bladfdskdfd dsgdsdksf (dog)
dfdshfdskdskfsdfkhsdf sdkfhdsfkdf (kathy) fdsfhdskfhdsfkd (doggy)
I want a generic.list (of string) containing
cat
dog
kathy
doggy
How to do that with regular expression in vb.net
Later I want to do something more complicated like getting all strings between "url":" and ", from this strings
[Code].....
Is there an easy way to find a certain string within a string and then return the strings that you find as an array?I have written this:
Public Function FindStrings(ByVal strSourceString As String, ByVal strStartString As String, ByVal strEndString As String) As String()
Dim StringStartposition As Integer
Dim StringEndPosition As Integer
Dim Currentposition As Integer = 1
[Code]...