Search For New Line Position In A String Variable Using InStr
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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Aug 16, 2011
Is it possible to use a string for string 2? cuz whenever i tried it would return a 0 instead of the position of the string. however when i hard code the string into the code it works
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Nov 18, 2009
I'm looking for a way to search a string variable for two words and copy the text in between them into another variable. This needs to be done as many times as the match occurs.
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Jan 30, 2010
I am creating a movie player which lists movie files from various folders/subfolders in a combobox (tsFileList). I'd like to be able to enter the movie name into a textbox (txtSearch), find that text in the combobox (using instr), then automatically select the found item.I'd like to use instr as some of the items in the combobox contains full file paths.
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Nov 19, 2011
I created a code that allows me to search inside a RichTextBox...Then the code is as follows:[code]Now with the code that I use today, the MsgBox show me only the first, ie "<b> text1 </ b>" while others are not..
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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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Jul 21, 2009
I want to assign the value of the integer returned from the InStr method to a variable. So, If TextBox2.Text = "The Apple Pie" And TextBox1.Text = "App", I want the integer returned, which in this case would be 5, put into a variable, lets say its called 'VarString'.
So VarString (would) = 5.
[Code]...
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Jan 26, 2012
other than GML (Yoyogames.com Game Maker Language), I am new to the coding world. The only "major" project I have completed using VB is a computer calculator that exactly mimics the capabilities of Windows 7's calculator. Yesterday, I began a Chatbot program for my girlfriend. Lol. I have used the instr() function to answer most of the questions or answers which are typed into the textbox1. I find this extremely troublesome because when using the instr() function you cannot say instr(textbox1.
Public Class Form1
Dim fos As String = "Foster: "
Dim ash As String = "Ashley: "
[code].....
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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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Jul 29, 2009
I have the following condition
If InStr("a,b,c", stringA) > 0 OrElse (InStr("y,z", stringB) > 0 AndAlso value = 0) Then
endif
COndition 1 is false so i check for condition 2 that is "(InStr("y,z", stringB) > 0 AndAlso value = 0) "
What puzzles me is that when stringB is nothing it still falls into the if condition and executes the code.
On first look it would seem that when stringB is nothing condition2 would fail and as a result would not fall into the if condition.
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Jan 21, 2011
What i am trying to do is take a character (which is going to be into a variable by user input) and search a string for this character, and save the positions of all character found and then change the same position of these characters in another string for the character that the user inputs. In other words, like a guess a word game. User tryes a guess, i search the string for that letter or number, if it's there replace it on the text box of the GUi, if not save it in another variable as a character that has been tried already, possibly an array.
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Jun 21, 2010
I really need line with this I can't figure this out . I am looping through items in a list view box, I am then adding them to a string. I need each new line in the listview box to be a new line in the string. I will then add this string an access database.But I can't get it to skip a line in the string
This is the code For Each lvItem As ListViewItem In lstVParts.Items
[Code]...
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Nov 28, 2011
I am developing an app which allows a user to send emails.I am using a multiline text box for the user to capture data, but when I convert it to a string it does not pick up a new paragraph.How would I insert a <br> & </br> for a new line within a string variable?
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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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Oct 3, 2011
I have a WinForms app with a multi-line textbox. This displays and retains (after loading from the DB) line break characters fine. However if I assign the TextBox.Text value to a string variable and then re-assign the variable back to the TextBox.Text property, the line break characters are lost and replaced with a square character (can't past them here as they just paste as a line break!)
[Code]...
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Sep 28, 2011
I'm appending string variable text after appending a line throws System.OutOfMemoryException?
Can any one explain why it is throwing error.
str+="something Text"
str+="something Text"
and lastly I assign it to a lable text When I assign the value of str it throws exception.....
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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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Jun 23, 2011
I'm reading a text file with StreamReader, line by line. If a condition is met, then I do an operation and then start reading the file again from the first line. I realize I could close and then re-open the file, but surely this would be very slow.
I could do this easily in VB6, but pulling my hair out trying to do this in vB.net. It seems that 'Seek' is the function to use, but it doesn't work.
I've seen other examples, where it works, but you must open it a different way -- with a file number.
Imports System.IO
Dim I as Integer
Dim LineText as String
[Code].....
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Dec 24, 2009
I'm currently working on a program that involves a listbox, database and some (rich) Textboxes. Let's assume I'm making a contactlist program.The database connection is established, placed 'ContactName' in listbox.When you click on someone's name in the listbox, I want the program to get the data of that person and show that data in RichTextbox1. I've spend hours thinking how to accomplish that but all I got was headaches.
A second thing I would like to do is to place a textbox on the form and when you type a character it removes all the entries in the listbox except for the ones that matches.So if I'm searching for John Doe and I type "John" in the textbox I would like to see all the John's in my contact list. Or when I search for John and only type "oh" I would like to remove all the items that don't have any "oh" in their names. (Search box)
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Dec 25, 2010
If i have a line in a txt document "text.txt".Now what i want to do is open the file and read the contents.
When it find this "search.selectedEngine" term then it should delete that particular line and replace it with another string ("REPLACED STRING").
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Jun 6, 2011
I'm writing a text editor for my own use ( I'm "home learning") where I want to be able to leave comments for myself, like in code section of the VB express IDE. I have figured out how to get the Integer Location of the apostrophy, but can't get it to color the rest of the line. I don't know how to tell the program to find the integer value of the last character in the line. I need that to be able to subtract the apostrophy's location from the last character's location, to get the "SelectedLength". Then I can add that to the apstrophy's location to give the SelectedLength the SelectionColor.This code was thrown together from excerpts of several codes I found on the web. I had to rewrite everything to get it to do what it does so far...
Apostrophy Location is char # 534 , the end of the line is 547. ( I cheated to get that count by placing another apostrophy there, and reclicking the btn. )Anyway, I want to take 547 - 534 to get (13) the SelectionLength, then give the SelectionColor ( green) to that selected text.
[CODE]
Dim Location As Integer
Dim char3() As String = {"'"}
Dim z As Integer = CStr(vbCrLf.Count)
[code]....
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Sep 22, 2010
How to get the line number where the cursor is in a RichTextBox? I'm using VB 2010
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Dec 30, 2009
When I right click in a richtextbox, a context menu appears with an option 'get line'. When that is pressed, it should return the line number in which the mouse cursor is in.
I was thinking something like:
Private Sub GetLineToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles GetLineToolStripMenuItem.Click
Dim intLine As Integer
[Code]....
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Apr 17, 2011
I have added a StatusStrip control and placed a StatusLabel inside of it. But now I want to know how to connect it to my TextBox to show the line number and position of the cursor, like: "Line 2, Row 6".
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Sep 28, 2009
I'm testing a small program that can read & write to an rtf file. Examples I have found work fine, although I have two questions:
1)If I need to ALWAYS write to line number 9 of an existing RTF file, do I need to "read" 9 times or can I immediately position myself to line number 9. I have found character manipulation but can't seem to find what I need with positioning to a particular line number.
2)BOLD text: I have found examples where I should be able to format my text, such as
MyFile.WriteLine ""
MyFile.WriteLine Text
MyFile.WriteLine "0"
but when doing this, it does not "bold" my text, but actually prints the text exactly as shown. I'm looking for information/links that I can "bold" "Italicize" text. Code is written in VS2005.
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May 13, 2010
I have a very large number of tables with data in the following format:
A X Y Z
1 0-2 0-13 0-1
2 3-5 14 2-4
3 6-9 15-16 5-10
In other words, there is a variable (call it A) with a single value that corresponds to a range of values in the other variables (call them X, Y, and Z).My program needs to accept user text input of values of X, Y, Z, etc. and then match each to the corresponding value of A.Example: User enters 4 in the X text box; program determines that if X=4, A=2.Again, we're talking about tables and tables of data in this format. Unaware of a better method, I have been using arrays.
Example:
Dim a() as double = {1,1,1,2,2,2,3,3,3,3...}
Dim x() as double = {0,1,2,3,4,5,6,7,8,9,10...}
Note how I had to artificially deal with variable A so that the index of each score corresponds to the index of the matching X variable.It is this modification of the variables that is taking forever. There has to be a better way! Hypothetically, what I need is the ability to do something like this:
Dim a() as double = {1,2,3,4...}
dim x() as double = {0 to 2, 3 to 5, 6 to 9...}
Is there a way to represent a range of values at a single index of an array, such as my hypothetical example above? This would save me hours of re-shaping the data to make the arrays work.
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May 6, 2010
I am trying to learn how to read XML file and created a little program below to start testing what I have read but keep getting error "Data at the root level is invalid. Line 1, position 1"The line where the error is coming from is the line "xmldoc.LoadXml(strFile)".. any ideas?
Code:
Private Sub cmdReadXML_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Handles cmdReadXML.Click
Dim clsk As New clsHx
[code]....
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Oct 26, 2009
Here is my problem: I developed one application in VB.Net in VS 2008 Express Edition on MS Vista. I published the application and created the installation setup. Now when I install this application on any Vista machine, it runs without any problems, but if I install it on an XP machine, the installation is clean, but when I launch the application, it ends abruptly without any warnings/error just after the splash screen.
Then to investigate further what I did was that I copied the source project from my VS 2008 Express Edition on Vista to an XP machine having full (VS 2008 Team System) version , and when I try to compile it there (XP/VS2008 Full), I get one error in one of the forms resx file. Incidently this is the same form that gets loaded after the splash screen. So I see there is some correlation between my application ending just after the splash screen and failing to compile the main form of the application. The error that I get reads like: "Invalid resx file. The parameter is incorrect Line 1374, position 5."
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Dec 19, 2011
I need to draw several line-graphics on a form, then select and drag individual graphics to new locations. Is it possible for example to give each graphic path an identity when drawn, then select any one (via mousedown, whatever) and link it to the dragged mouse co-ordinates until released? MS Visio has exactly this ability - can it be done in .NET?
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Aug 2, 2011
I am attempting to send my XML file through an API. I have done this no problem by using the below code, however when I try and send the FILE over it will not work, I am now getting in the browser:
Data at the root level is invalid. Line 1, position 39.
Without trying to send FILE it works:
' create the Xml that the Msxml2.serverXmlHttp object will send to the Webservice
dim Xml_to_Send
Xml_to_Send = "<?xml version=""1.0"" encoding=""utf-8"" ?>"
Xml_to_Send = Xml_to_Send & "<xmldata>"
[Code]....
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