Quick Search In A Richtextbox?
May 13, 2010
I have a RichTextBox where I expect 100 characters per line. Each line can start with the letter A, B, or C. I may have thousands of lines and most of them will start with the letter C.When the cursor is moved from one line to another and is placed on a "C" line, I need to be able to quickly locate the nearest "B" line above it. It may be hundreds of lines away. A loop to search for the "B" line using GetFirstCharIndexFromLine(x) is too slow.
The user may want to paste many lines into the textbox. If necessary, a mild wait after pasting is acceptable.Do you have any suggestions for a technique to accomplish what I need to do? Even just a high level suggestion like "use a linked list"
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Aug 2, 2010
Could anybody guide me how to perform a quick serch in vb.net database?I used to do it in vb6, using FindFirst method.Is anything else like that in vb.net?Do i always have to use SQL to check if record under current data exists in the database or not?
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Aug 26, 2010
I have a richtextbox with a large file inside....I want to be able to search for "Fornication" within the text (KJV Bible) and have every instance of that word to pop up into another richtextbox along with the scripture it is in.
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Dec 7, 2010
I am developing a VB application using the Visual Studio 2008 IDE. I was making changes to my code using the Quick Replace function when the dialog window stopped displaying. Selection of Quick Find or Quick Replace from the Edit menu, as well as use of shortcut keys (CTL+F and CTL+H) all have the same affect: the IDE loses focus but no dialog windows display. Is this a known issue with an available fix?
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Dec 16, 2009
I'm trying to implement a search on a richtextbox. i want the scroll to move to the found area only if that area is out of the visible part of the text.
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Sep 15, 2008
I am creating a machinists G-Code editor based on a couple of Rich Text Boxes. I am using one for the line numbering and synchronizing its scroll to the main RTB vScroll event. I've created a menu that populates a text line with a G-Code textual template for each command. The user presses the tab key to step through each input zone.
[Code]...
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Aug 3, 2009
How to search richtextbox for a certain word?
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Feb 21, 2009
I have a text box called "txtDescription" and listbox called "lstDetails" and a RichTextBox called "rttFullDes.
When the User inputs the search query into the description box(txtDescription) e.g "books" then it returns all the records that contains the word "books" and displays their Id in the listbox(lstDetails). When you click on the IDs it returns the full description in the Description box(rttFullDes)
This all works fine. But i want all the words to be hightlighted. i have got this code which i found.
Dim wordToFind As String = txtDescription.Text
Dim index As Integer = rttFullDes.Text.IndexOf(wordToFind)
While index <> -1
[Code].....
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Jan 15, 2012
I am wanting to make a program in VB.NET that has many files.doc in a specific folderThis program has on top a textbox(txtSearch) with a button(btnSearch)under that this has two listbox(lstOption, lstResult), that are floating a left,one richtextbox(rtbDoc) that is floating a right.I want that when the user writes in txtSearch and click on button then the application will read all files, and find for this string.
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Dec 12, 2009
I want to get a string from the richtextbox but here how it goes in programming for example i want to get all class/function and variable names in this given code.
Quote:
Private Function Processstring(ByVal strin As String) As String
Dim astrWords As String() = New String() {"parrot"}
Dim strOut As String = strin
Dim strWord As String
[code]....
how would i get the "processstring" by getting it after the word function?
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Mar 28, 2011
Here's the situation: I've got a form that has
- RichTextBox
- OpenButton (to load RTF file)
- SaveButton (to save RTF file after editing)
- Textbox (for search phrase)
- SearchButton
- ExitButton
- 2 RadioButtons (WholeWord and MatchCase search)
All of them are working just the way I want them to except search features; I don't know how to write them properly. At the moment, they search and highlight only the first word they encounter. E.g. say I search for word "the" in the document, only the first "the" it encounters is highlighted. The rest is just untouched.
I understand this is because I've only got few lines of simple code as follows
If rtfText.Find(txtSearch.Text, RichTextBoxFinds.WholeWord) = -1 Then
MessageBox.Show("No results returned. Please try again.", "No matching results.", MessageBoxButtons.OK, MessageBoxIcon.Information)
End If
I did try a few other snippets I found on the Internet including While loop but they didn't work as I wanted them to, and I couldn't understand them either. What I want is, which ever search option is used, when the matching result is found; it will highlight that word and when I click it again it will move onto another word. If I keep clicking, it will highlight the same words (but located in different areas) throughout the whole document and at the end, it will send back to the first matching word. Just like Adobe Reader search.
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Dec 13, 2009
i'm trying to make a search using richtextbox.find which is both MatchCase and Reverse. how can i do this?
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Feb 29, 2012
I am trying to do my sorts such as bubble sort and quick sort i got the bubble sort to work but cant seem to get the quick sort to work.
CODE:
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Nov 12, 2009
I used to write programs in Quick Basic on my XP computer. I now have a Vista (64bit) computer and everybody knows (except me) that those programs won't run on my Vista computer.I want to be able to write single user programs on my Vista computer like I did with my XP computer. Since I'm somewhat familiar with the Quick Basic language, I want to stay in the "Basic" language family. What do I need to have on my Vista computer that would allow me to write and run simple single user programs?
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Jul 19, 2010
I have a list with a boolean value as one of the properties. I need to check if every one of these is true. Now normally LINQ would give a nice clean answer here, but as I am using .NET 2.0 I can't use that.If there a nicer way to do this or am I going to have to do a for each loop and break out on finding a false?
Edit:Seems I could have been a bit clearer. I have an object in a list (eg List (Of MyObject)). There is a boolean property on this object called Processed.I need to check that all objects in the list are processed.So in LINQ I'd do:if (from o in list where o.processed = false select o).count = 0 then....
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Aug 4, 2010
Decided to make my own installer. code for making a quick launch icon.This is the code im using for creating a desktop icon.
vb.net
Dim WshShell As WshShellClass = New WshShellClass
Dim MyShortcut As IWshRuntimeLibrary.IWshShortcut
' The shortcut will be created on the desktop
[code]....
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Jun 19, 2009
As a measure of emergency I need to prepare a very simple ActiveX object to be used in Excel sheet and VBA.I'm not a hardcore programmer myself but I'm able to put together a code in VBA to get things done. I have no experience compiling ActiveX dll's in VB though.Could anyone point me to a simple tutorial on the web where I could learn steps how to do it in VB? (project type, setting up methods for the control, parameters for compiling the dll so it's recognized as an ActiveX.. etc)The ActiveX object will be very simple - it's a stopwatch:
1. displaying elapsing time, I have it done already in VB as a windows ap.
2. As an object it will be taking only 3 types of methods: start, stop, reset
3. it has to be a proper ActiveX, so I can use "insert ActiveX" in Excel to add it to the sheet and the code.
I guess I have to start with creating a 'class library' project, haven't I ?
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May 26, 2011
I am wondering how can I show a balloon tip for my system tray NotifyIcon application QUICKLY. What I mean by quickly is not linger around for like 5 seconds.. I have tried entering 1. For example my code is currently:
NotifyIcon1.ShowBalloonTip(1)
I thought about trying decimals but if I remember correctly from C++ it does nto work or make a difference.. how to display a balloon tip that pops up for only 1 second then dissapears very fast?
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Nov 4, 2010
The last app I put together was back when .net had just come out around 2002.Ive dusted off my cd's as I need another app writen.The problen is im now running Vista 64bit OS and my Visual Studio.net 2002 cd's are not likeing it at all.Does any1 have a quick fix apart from getting a new version of Visual Studio?Im reloading an old laptop back to XP atm to get a start on the app but would really like it on my main comp.And I dont want to run it in a sandbox either.
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Jul 5, 2009
I have to parse through a text file that is growing and currently is about 30MB, but it takes a long time for the stream reader to load it before It can loop through the lines. Is there a faster method other than the streamreader?
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May 16, 2012
Is It possible to make quick selection tool in vb.net like in photoshop?if not can you tell me how to make a free selector or rectangular selector please?
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Dec 24, 2009
Ran across a snippet a while back but can't seem to find it again. Was very short and simple and detected all versions using version major and minor.
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Aug 6, 2010
If I have a class with a couple of event handlers inside of it which are attached to an object that is defined within the class, am I right in thinking that I don't need to implement IDisposable to remove said handlers, even if I explicitly added the handlers myself? Also, can anyone point me in the direction of an article that explains the scope of when it is needed to remove handlers to avoid memory leaks. (I've tried searching many times but I must be screwing up my search terms.)I have a collection; every time an object is added to that collection, I add a handler to a change event of the object.When I'm done with the collection, do I need to go through each item and remove the handler before setting the reference to null?
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Aug 29, 2011
Okay, I've been at this ALL DAY no one's advice has helped so I'm zipping up the simplest version of my problem and attaching it a silver dollar for anyone who wants a quick and (seemingly) easy problem. What it is:
frm1 loads with a button to start frm2(and populate a datagridview).I'm trying to save its data in the module in the example but it might not be necessary.Then another button closes/hides form2 and you can push a button on form 1 to TRY TO get the frm2.datagridview1.item(0,0).value.I can't do any more tonight.
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Jan 7, 2012
I have a filled dataset from a query.
I must modify 2 columns in this dataset, based on a custom function value (a normal vb function), which parameter is an another column from the dataset.[code]...
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Feb 12, 2010
I am rather familiar with the ins and outs of VB.NET and Database Selects, Updates and Inserts. Not so good with Transactions. (Oracle, MSSQL)
for example, take a Billing System for a hardware store.I create a 'New Order' and select the Cash Customer I start adding items to this order. 1 Rake 1 Shovel Where do I store this information (temporarily) until the user hits 'SAVE'. Maybe the customer decides they don't want the items. Too expensive. I just EXIT. nothign to do.
Or - I open an existing order and make a bunch of changes. Where do I put these changes until the user hits SAVE. I am sure transactions might have something to do with this - or temporary somethings??? I just don't know and need some guidance.
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Sep 17, 2010
What's the best/quick way to print a pdf file? The user in the gui only needs to select the pdf and set the printer settings...
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Jan 6, 2010
Really small and quick question:When i have a listview, with detail view mode. Say i have like 5 columns.
When i select one item in one column, it only selects that item in that specific column i clicked, like a cell
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Nov 14, 2011
I have a table that has 9 columns, this table has about 5000 rows, but sometimes the user need to update the data in the table. The new data is in another table, with different columns names and only with 8 columns, the ninth column it's the date of the update (i know that this columns shouldn't be here...).
So for now i'm filing one datatable (the data come form a webservice that returns a dataset with this table), and after that i clean the original table and then for each row in the new datatable i call the insert command.Is there other way, better way, to do this?
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Nov 17, 2009
I'm trying to put together a quick program for our database, I haven't touched VB since vb6, and we have 2008 .NET now. my question.
Ideally I'd like to make an array which can hold multiple values...such as
Job[job#].joblocation
Job[job#].jobsupervisor
So there would be a Job array, and then different values contained within that. I can't seem to make an object or whatever which allows me to hold different variables inside it.
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