ive a folder with a few hundred .rtf documents. am making a program to search some text in them.the way currently im employing is having a richtextbox on my form and serially loading each file in the richtextbox and if the search text is found in it,adding it to a list.but this is time taking,
View 4 RepliesIn my project I have 3 different forms. They all have the same design layout so the only different you see is where the text boxes and buttons are placed. Right now I have 3 buttons at the top of each form that Im using to switch between the forms
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I know there is probably a much better way of doing this, and faster. I dont' like the delay between each window showing/hiding. what options do I have to make this run better? Since I have the same design background is there I way I can just hide and show just the controls instead of showing/hiding the entire window?
how to search XML files using vb application and open it. Both browser and notepad
View 1 RepliesI can't figure out how to do this...I'm trying to search a directory for files,I have files that are like this:
File.doc
File 1.doc
File 2.doc
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I need to search in a directory all .xml files and remove it. But this directory can has more subdirectories and folders (depends the user)
View 1 RepliesI have a folder with a whole lot of music in it (*.mp3 files.). Now on my form I can play these songs in playlists, and other extra's. But now what I want to finish it, is to create a search function. Here is a picture of my Form. And what I want to add is a Listbox, TextBox and a button.
When I type: "Eye of the Tiger" in the Textbox and click the Button, All *.mp3 files in my folder, and the subfolders, with "Eye of the Tiger" in it, are added to the Listbox (The full name, like: "Survivor - Eye of the Tiger") will show at the Listbox. How can I do this, in an easy way, if possible.
one of the BIG hurdles in my simple project, making a search engine. I don't know how at all. The search engine need only to search in one Directory with its sub directories and txt files for criteria, and display the results, with option open from the results. any basic code or example maybe?
View 5 Replieshow I can search a folder of csv files to find out if one of the csv files has a particular name in ?I'm currently searching a folder to bring back all csv files using the code below and this is working fine.
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But now I want to take it a step further and actually search within the files themselves.
I have a program that scrap websites and "puts" the information into a table.
My problem is that now and then i get values that i already have in the table. to avoid getting duplicates i search thru the table first to see if the value exist or if the record exist but might be in need of getting updated.
My table contains 60 000 records and is growing.
first i filtered a datagrid but it takes to long so i used the "select" method on the dataset table but it takes longer.
the program loops thru thousands of websites so it'll be doing a search for every website and the added time to collect the data just takes too long.
so the way I have this working now I'M using System.Collections.Generic.List(Of T) for holding 100's of a structure.Dim Users as New List(Of User)
I was wondering if there was any better way or faster list container or something like this in the .net framework?
When I have many controls on a Form (i.e. Label, Button etc) that do almost the same thing, I often use one method to handle all the controls Click, MouseDown, MouseUp events.But to know which of the controls throwing the event and access the properties of that control I need to cast the "sender" object to the correct type.
The thing is that I always know which type it is, I don't really have to "TryCast", "DirectCast" and check if the operation returns true. I some times use CType as well.
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epeat some instructions the fastest?i tried this:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
start()
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I've an arraylist having 30000 items in it, what's the best way of creating a text file on the fly from an ASP.NEt page? Currently I'm using the code below but it times out with large data,[code]
View 3 RepliesI have a pixel I want to monitor for change. For example, first it is white, and suddenly it is black, and then changes back to white. My method is not fast enough to get this change.any changes I call the function below to get the original color of the pixel. Then I have a timer that runs every 1 ms to take the color of the pixel, and if it's not equal to original color; do something. For example counts the time the pixel has changed. However, this function does not run fast enough. Is there any faster methods to check the pixel? The function returns an ARGB code of the pixel color.[code]....
View 3 RepliesThe fastest way to generate thumbnails using VB.net and multiple computers without bogging down the UI. Right now I have 3 computers and I run an instance of my thumbnail generator code on each. One computer hosts the images. The other two computers access the folder of images via the network. My code is written to compare the main folder and a thumbnail folder to see if new thumbnails need to be generated. If so, a thread is generated and the thumbnail generation code is ran on the thread. There are 5 threads created in all. So, theoretically, across 3 machines, I'm getting 5 independent threads and I'm thinking that Windows 7 automatically spreads the load across the local cores. In an effort to avoid duplicating work, the comparison is done before the generation of each thumbnail.
This method is faster than using only one computer but drags down the performance on all computers (THE UI also becomes unresponsive). I'm looking for a better way to
1.) Produce the thumbnails as fast as possible
2.) Keep all UI's responsive (boy possibly controlling the priority setting) and
3.) Done within a single instance of the program.
In the #3, I mentioned that I would like to use one instance. Is it possible for networking information be used by the hosting computer that will allow threads to run on the other 2 computers? This way, the 15 threads will be controlled by a single host computer.
Here is a snippet of my
Public Sub CreateThumbsFUNCTION(ByVal IMAGE As String, ByVal MAXDIMENSION As Integer)
'following code resizes picture to fit.
'IMAGE needs the full path
'If thumbnail already exists, it will skip
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I was wondering if anyone had a better(faster) way to parse a Tab delimited file in VB.net. I need to read a file into an SQL table and the file contains about 300,000+ rows. Takes quiet a while. at the moment i have the below [Code].
View 6 RepliesI am quite new at VB.NET and just need helo on sorting algorithms, prferbly the fastest (quick sort) but bubble would so. It is for sorting and array for 12 numbers, which are being enter by the user via a input box. These are then transfered onto a listbox for visual aid. so the steps involved would be: (already done)1) Enter then inputs into array via inputbox2) Input to sppear in listbox (not done)3) Sort the array ascending/decending4) print results into the listbox again.In my code there is also a total and a average, but that doesnt need any help on it. [code]
View 4 RepliesMy current project is to process several files. The files come from a Unix server and have been SFTP'd to the Windows XP machine. (That's fixed protocol, I don't have control over it.) My problem now is that the Unix new line characters and Windows characters don't match. The solution is to read the file line by line and replace 0x0A with 0x0D + 0x0A, or Asc 10 with Asc 13 + Asc 10, or vbLf with vbCrLf, however you like to say it.Well I have a working function to do this, but any extra speed I could squeeze out of it would be fantastic. The text files I'm working with can reach sizes of about 100MB. So to the question:
Q: What is the fastest way to read a file in, change characters as necessary and then write the file out?Here is my current working code.
Private Sub FormatCharacters(ByVal files As String())
Try
For Each fileName As String In files
FileSystem.Rename(fileName, fileName & ".old")
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i need help with searching files.Example: I want to find all .jpeg files on computer or in a specific folder. And when i/it found the files it lists them up i something that you recommend, like a listbox.
View 5 RepliesWhen ListView is not in Virtual mode the following method seems to be the fast method to load a large list into ListView:
Dim items As New List(Of ListViewItem)
Dim alllines as String()=System.IO.File.ReadAllLines("FilePath")
For each line as string in alllines
Dim item As New ListViewItem
item.Text = line
items.Add(item)
Next
ListView1.Items.AddRange(items.ToArray())
Can anybody show me the code to search all the files in the system? i also need to search it drive-wise.
View 2 RepliesI have around 50000 XML files with a size of 50KB per file. I want to search for data in these files, but my solution so far is very slow. Is there any way to enhance the search performance?
View 6 RepliesI have already posted a thread regarding this but no one has ever shed a light upon it. I want a program that searches for files (.docx, exe, ppt, txt) from all folders.
View 7 RepliesI need a code to find all files. mp3 on your hard disk with certain tags (eg: Shakira, Pitbull, 50 Cent, etc.). and then delete it.
Try
For Each f In Directory.GetFiles("D:", "*.mp3", SearchOption.AllDirectories)
File.Delete(f)
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I need a code to find all files. mp3 on your hard disk with certain tags (eg: Shakira, Pitbull, 50 Cent, etc.). and then delete it.
View 2 RepliesI have this code that makes me confuse..
For Each file_info As FileInfo In file_infos
If Not File.Exists("C:\Mydir" & file_info.Name) Then
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I am trying to write a program that would search for specific files and then zip them up. Is that even possible in vb.net. I am using vs2005.
View 4 RepliesI am going to make some facility searching in my program. This searching is same like searching file in windows XP but only for xml file.
i succes make FolderBrowserDialog so i can put directory path in text box. the problem is i don't know how to search specific file specially for xml file and put the result in listbox
in windows xp: i am using wildcard (*) for searching xml file in specific folder,just like this: *.xml.
I am using this code to get files, but I can not get it to search for all files on C: drive.How can I get it to show all files Like *.pdf of the drive in the list box
Imports System.IO
Imports System
Imports System.Drawing
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I am creating an application that will pull all of the files ending with .txt out of a directory, however, the directory contains folders with .txt files in them as well. How can I search the entire directory including sub directories to get all .txt files to show up in my list box? Right now I am only getting .txt files that are right in the directory, but not the .txt files that are located in other folders located within the directory I chose.