Search The Array(0) Of Each Line?
May 2, 2009
I'm importing a text file of 42 lines, each containing 11 segments to be read. This is then split and put in an array. This is all displayed in TextBox1 for check purposes only.Next I'd like to search the array(0) of each line, and when the searched for text (search) is found, take the (1) (2) etc of that line to store in another variable which will be used for calculations later on in the program.I'll admit my head is now a Do Until = Crazy ! Loop I can't seem to get my head around the syntax and logic.How do I get a search function to check each line until the right text is found, pass the variables on that i need and exit that routine ?
My code up to now:
Imports System.IO
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim objStreamReader As StreamReader
[code].....
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Sep 8, 2010
Row1
;W910 RF3500AA ;Increase volume by 40 db ;(c) summer ;(p) horse +1000000 F5 000000 5555 44 555555 904938291 8676859 00
Row2
;W910 RF350011 ;Increase backlight by 50% ;(c) winter ;(p) vistar +1000000 F5 000000 5555 44 555555 904938291 8676859 00
Row3
;W910 RF350022 ;Increase backlight by 100% ;(c) spring ;(p) spaceman +1000000 F5 000000 5555 44 555555 904938291 8676859 00
Row4 (Duplicate of Row3)
;W910 RF350022 ;Increase backlight by 100% ;(c) spring ;(p) spaceman +1000000 F5 000000 5555 44 555555 904938291 8676859 00
if label1 = RF350022
label2 = Increase
label3 = spring
label4 = 100%
only if it contains all of these words it should return the first instance (row3) then end or null the rest (row4).how can i get row 3 to show in message box now it has been found?
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Dec 15, 2009
I am trying to search the 4 columns of my array by using this click event. The column is determined by a radio button as you can see. I changed my code from last time and now it works, but only for the first column. If i try to search out a string in the second or third columns I get an error based on the line highlighted in blue HTML accutally shows and it is green. the error says Index was outside bounds of array
Like i said It works fine for all values in the first column, accually the second (Numbered 1). If i enter a value in the partsnumBox and it is found in the the 2nd 3rd and 4th columns I want the value in the first column (0) of the same row.
Private Sub FindButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FindButton.Click
'Define Array
Dim PartsArray(,) As String = {{"PR214", "MR43T", "RBL8", "14K22"}, {"PR223", "R43", "RJ6", "14K24"},
[CODE]...
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Sep 6, 2009
How to copy RichTextBox to an array line-by-line and back to another RTB From that array?
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Oct 14, 2011
what i need to do is open a txt file, read line by line, decode each line into an array and display. Now all works ok apart from one line.
sTextLine = objReader.ReadLine() <-- Value of string cannot be converted.
full code here
-------------
Dim objReader As New System.IO.StreamReader(sOpenFile.Text)
Dim sTextLine As New ArrayList()
Dim sText As String = ""
Dim i As Integer = 0
[code]....
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Aug 30, 2010
I like search a file TXT with this contains:
Name "Paul"
Age "11"
City "Chicago"
my question is: Its possible get a string "Name" and give me the value "Paul"? I have this function for get strings:
[code]...
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Apr 8, 2010
I just joined this forum as I've been looking for a nice and serious VB forum for a long time
I'm having troubles making a program to search a text file line by line for a specific string.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim objReader As New System.IO.StreamReader("C: est.txt")
[Code]...
as you can see in the code its supposed to read a text file and if the line contains the same string as in the textbox then its gonna make a messagebox.
now the problem, if the line does not contain the specific string but the next or any line other line does, then it should automatically read the next line on "Else" and that's where I'm lost
for a "Readnextline" command or something like that?
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Mar 17, 2010
I'm trying to read a file line by line into an array but It skips the item at index:3 I have it msgboxing just to make sure and it wont even touch it.
Dim Btn As Button = DirectCast(sender, Button)
Dim path As String = Application.StartupPath & "Libraries" & Btn.Text.Replace(" ", "_") & ".ipt"
Dim i As Integer = 0
Dim lines As String() = IO.File.ReadAllLines(path)
[code]....
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Jun 29, 2009
i would like to store contents from a text file line by line to arrays before copying them to another text file. what i have is currently like this:
[Code]...
Currently I'm only able to store the whole content into one variable, would like to store the content line by line in arrays.
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Nov 13, 2010
I have to search within an array and display the number of occurrences that a value within the array appears. I know that my code is incorrect but this is what I have so far. If anyone can point out what I am doing wrong that would be great.
Private Sub btnResult_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnResult.Click
Dim intSearchAmount As Integer
Dim intCounter As Integer
Dim intIndex As Integer
[code].....
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Jun 22, 2009
I have code that reads the whole file, not line by line.
Here is the code:
FileOpen(1, filename, OpenMode.Input)
Do While Not EOF(1)
datatodisplay = LineInput(1)
Loop
FileClose(1)
I would like to know how I can read the file line by line and then add all results into an array list.
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Jul 11, 2010
i have a text file which contain 3 lines "ha 0.21, hb 0.35, hc 0.44" I want to read the file and get the second character of every line, which are "a, b and c" and assign them to array. My code below able to read the file but only able to get the last line of text. May i know how to do to get every second character and assign to array?
Dim FILE_NAME As String = "C:Test.txt"
Dim TextLine As String
If System.IO.File.Exists(FILE_NAME) = True Then
[Code]....
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Mar 19, 2012
I must use streamreader to read text file line by line into array.
Here's what I've got.
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
Dim numbers() As Double = New StreamReader(txtfile.Text)
Dim numbersarray() As Double
[Code].....
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Mar 23, 2012
I want to set a property of an object that is an array type. If I was declaring and initialising an array of objects, I'd do this: Dim x() as SomeObject = {obj1, obj2}
I don't seems to be able to do something similar with the property, can you do this, does anyone know the correct syntax? myObj.ArrayProperty = {obj1, obj2}
I get Expression Expected Error on the first {
Infer Off
Explicit On
Strict On
Answer : myObj.ArrayProperty = New objType() {obj1, obj2}
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Sep 16, 2009
Basically I want to find the first occurrence of one array in another. I have tried using the Array.IndexOf Function, but it always returns -1. Example:
Dim array1 As Byte() = {1, 2, 3, 4, 5}
Dim array2 As Byte() = {2, 3}
MsgBox(Array.IndexOf(array1, array2))
Even though array2 does exist in array1, the message box always shows -1
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Jul 14, 2010
Currently i have this code:
If InStr(1, UCase(TextBox3.Text), TextBox2.Text) <> 0 Then
End If
which sees if text from textbox2 is in textbox3, but if there are multiple lines in textbox3 then it wont search.
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Jan 24, 2009
How would you go about searching a webbrowser for a line containing a string? Here is my code so far:
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim url As String
WebBrowser1.Navigate(txt_url.text)
[Code] .....
In this code, I would like to search for the first instance of "RichTextBox.AppendText" and put that into a string. I have also found when browsing in the webbrowser if you can across a download, and you just want to download it to a default directory without the open, save, cancel dialog box coming up. How would you go about doing this, if it is possible?
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Nov 26, 2009
What I am trying to do here is search a multi-line textbox that contains the source of a particular website.what I would like is something like this but i do not know how to right it like i need
Dim MyString, FirstWord, LastWord, MidWords As String MyString = "Mid Function Demo" ' would be the textbox FirstWord = Mid(MyString, 1, 3) ' Returns "Mid". LastWord = Mid(MyString, 14, 4) ' Returns "Demo". MidWords = Mid(MyString, 5) ' Returns "Function Demo".
this function works fine only when you define len.what I need is a function that will do something like this, "note obviously interpreted code"
Dim text, A,B,C as string text = textbox1 A = "<body>" B = "information between A and C being of variable len" C = "</body>" textbox2 = B
I do not want anything like,
remove "<>?|?()}{][" etc.
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Aug 7, 2009
I have an application in VB.NET which gets string data from the database. This string has data which looks as below:
"This is the update: I have an issue with the application"
I need only part of the data, that comes after the new line i.e. "I have an issue with the application".
For this I am trying to search the position using InStr where the string has data in a new line. I tried many options, but they don't work.
I used "vbCrLf", Chr(13), "
", "
", "<br/>", Environment.NewLine, but none of them work.
How can I get the data I need?
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Nov 11, 2010
edit: nvm solved it
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Jun 5, 2011
I'm new here, but have been in and out for a while. Past threads have been helping me along thus far.
I'm currently developing an app which essentially needs a way for me to search in a text box or file for a specific string, and extract the line on which that string appears on. It will be unique, and the syntax is the same on each line. It has basically 2 ID numbers, and is laid out like this:
123456|123456
So, I'd need to search for the first part before the |, and then get the line so I can get the bit after the |, which is the important bit for me.
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Nov 18, 2010
I would like to read an HTML file, search each line to see if it starts with </head>. Then add the centering code after it. That line at destination file should read:
</head><table border="0" cellpadding="0" cellspacing="2" width="760"align="center"><tr><td>
After this I don't care to search for anything. Just read from source and write to destination. I know there are programs out there to find/replace text in series of files but I am not allowed to use external programs.
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Jan 23, 2010
I'm trying to search for text that is known to be in a TextBox.
Once it is found, I want to return the line number it was found on.
Also, I would like to know how to delete all blank lines from a TextBox.
These two problems have been plaguing me for the last 2 days.
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May 3, 2010
If (strExcludeDirectories(i) = strNewActualDirectory) _
Or strNewActualDirectory.Contains(strExcludeDirectories(i)) _
Then
[code].....
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Jun 22, 2010
I need to search through an array of X numbers (X is going to change, so for example, one instance could be that X = 20, the next could be X = 67). I need to find how many combinations of 1000 I can make. For example, each element in the array is going to be a number that is less than 1000. I want to see how many combinations I can make of the elements in the array (and what the combination is) such that the total of the combination is within 20 of 1000 (but not to exceed 1000). If getting within 20 is not possible, the range can increase to 30. If 30 is not possible, the range can increase to 40 and so on.
Every time an element in the array is used to get the combination closer to 1000, that element is to be deleted and NOT used for further combinations. The deliverable from this function would be the number of combinations along with what each combination is made of.
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Feb 15, 2012
I went through a lot of sites about searching within an array, but I could not find any clues. I created the following array :
Private LetterArray() As String = {"A", "B", "C"}
and I don't know how to get the target letter from a "Textbox" and search "SearchButton" for it ?I have to do the following:
- Get the TargetLetter from the textbox
- Set a Boolean for Found to False (which I did)
- Use for loop For Each Letter in the Array (LetterArray)
- If the Word = the Target
Make Found True
Endif
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Jul 28, 2010
i have form1 with combobox1 and rtb1 i would like to search the rtb1 for combobox1 selected value and return the first 9 characters from the line with the result.
COMBOBOX1
ADRIATIC
AMERICA
APAC-ANZ
[code]....
so if combobox1 selected.value = "BALTIC" then i would like "1209-4756" to become a named string (eg, cda = 1209-4756)
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Apr 11, 2011
I am trying to write a program which performs a binary search. The user will input the name of a state in a textbox.I have a listbox which is populated with the 50 states in ABC order.The middle of the list must be determined and then determine which half of the list the state may be located. If the middle item is less than the state name the state should be in the second half of the list. If it's greater than the state name is should be in the first half of the list. The calculation for looking at the middle itemi the list is:
middle = CInt(first + last)/2)
There is a variable 'flag' which is initially set to false and then will be set to true if the state name is found. The variable first is initially set to 0 and last needs to be set to one less than the number of items in the list.Below is a very rough program fragment.
Code:
Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click
Dim i As Integer
Dim flag As Boolean = False
Dim first As Double = 0
[code]....
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Mar 30, 2009
I want to be able to effectively search an array for the contents of a string.
dim arr() as string={"ravi","Kumar","Ravi","Ramesh"}
I pass the value is "ra" and I want it to return the index of 2 and 3.
How can I do this in VB.NET?
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Oct 22, 2010
I have a 2 column database....looks a little something like this:
Column A Column B
972CL 86.20716105
972CL 58.71034089
972CL 64.15368376[code].....
In column A there are 5 different variables (i have shown 3)....My goal code a macro to sort these by column A, calculate the average of the corresponding values in column B and ultimately end up with 5 variables that are the names of column A. e.g
972CL = average of all the 9721CL variables
972V = average of all the 972V variables
A caveat is that i will not know the names of the variables...i'm not sure if this code below is the right way:
For Row2 = 1 To 100
If Worksheets("Sheet2").Cells(Row2, Col2).Value = Worksheets("Sheet2").Cells(Row2 + 1, Col2 + 1).Value Then
testno = Worksheets("Sheet2").Cells(Row2, Col2).Value[code].....
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