I am need of creating a windows executable that contains a compression of certain other binary files, (executables etc)
It is a basic form with a button, on press of the button, it has to decompress certain binary files( some other executables too) into a certain path, the decompression happens based on some specific conditions and not always., This is the reason I could not use WinZIP to create the EXE.
I am using CGZipLibrary.dll in my code for zipping the files. A .zip file is being created but the file is not getting compressed. The original file and the .zip file are of same size.
View 1 RepliesHow could I go about doing this if I can? Storing files into an application compressing them and then extracting them?
View 1 RepliesI have an editor created invb.net that creates html files. And when i click the button run , the Internet Explorer opens my file that is inside the Richtextbox.
View 3 RepliesI am trying to deploy my first application using vb. I have tried to use the one click but here is my problem.
I have a group of data files, some *.txt and one access data base (*.dbf) that I need to have placed in a folder (that is created) located at c:monitor.
how to do it in either the one-click or in a setup project.
I would also like to have a condition that if the files exist that they are not overwritten with an updated installation.
I have VB project and I tried to use PUBLISH feature.It seems to create nicely some kind of setup program, but the setup program does not ask where to copy files (it does not seem to copy filesto target machine "PROGRAM FILES".)Is this setup program somehow different from usual installers?
NOTE: I want that app files are installed to Hard disk( from USB stick source)Is the signing recommended or necessary? My App is pretty simple, its just using access DB + printer api, should I still sign?
I have an app where a user enters information on a ticket and that ticket is saved off to a file on a share.Later on, when the ticket is closed or resolved, the file is deleted.Pretty straightforward.The below code is used to achieve this but, and this is the odd part, I'm finding that sometimes the app does not write the file and other times it will not delete it.I've confirmed that the user is running the latest version, that the tool isn't in off line mode, that all the appropriate criteria are set to true before entering the routines. It works 99% of the time but every so often it doesn't create/delete the file and there are no errors thrown or anything.Going into this section of code, chkOffline is not checked, "GoNoGo" is set to "Go", "Type" is set to "Live" and all fields have been filled out on the form(and vetted).What's more, there are other actions earlier in the app/sub that rely on these same conditions and those actions are getting carried out.[code]
View 2 RepliesI've been having a very odd problem when creating zip files in vb.net. They are ok when I run the code and save the file locally. However, if I run the program via remote desktop, and then save locally, the zip file is corrupted, and will not open (message "cannot open file:it does not appear to be a valid archive").I have tried opening it as a txt file, and found that there is a load of HTML at the bottom of the corrupt version, that the non-corrupt version does not have. Anyone got any idea how this extra HTML might have got there?[code]
View 2 RepliesI am developing an application where the user saves a chosen RTF file to a SQL Server database. My problem is that if the file contains an image, the binary becomes too big. Although the database has enough space, it's not very nice to use up space you could save.... To give an example:
[Code]...
I am developing an application where the user saves a chosen RTF file to a SQL Server database. My problem is that if the file contains an image, the binary becomes too big. Although the database has enough space, it's not very nice to use up space you could save....To give an example:
RTF binary with two text lines ("ABC / efg") = 156 Bytes
Same 2 lines + 32 kB image = 2.2MB
I am still confused on which is the best way to solve this. I have thought about creating an "images" table in my database and using a markup to fetch the image when the file is loaded.
I create some files in VB.net from a master file but when I try to open the newly created file, Excel starts and nothing is displayed, you can see the outline of Excel and it's menus and nothing else. You can't do anything with excel except close the entire application. [Code] It is upon trying to re-open where it fails, outside of the VBE. I have not had a problem like this using VB6 before, so I am assuming I am doing or not doing something.
View 3 RepliesI know how to monitor newly created files etc but what i want to do now is monitor firefox and IE when they close. my application is running in the bg and i need it to perform a command when the browser closes.
View 4 RepliesI agree that the best way to shorten the ViewState is to disable it on the ASP.Net controls that don't need it. Keeping it small from the beginning is a great habit.I have also heard that it is already compressed (although can be true... there are ways of compressing it even more, has described in this Stack Overflow question).
My question here is not if it should be compressed... is: when should ViewState be compressed?If we have a ViewState of 410 characters it will weight 410 bytes in a page, while a ViewState of 13.843 characters equals 13.5 KB.
13.5KB is a considerable weight already. And if I compress a CSS file that height 10KB, I think it is also worthy compressing a ViewState of 13.5KB, even if that means a little extra "thinking" on the server.
But is 410 bytes of ViewState worth the extra processing on the server?At what point is it worth compressing?
I've downloaded ZLIB.NET from here and the example VB.NET code they provide works fine. It's very short so I'll paste it here for reference:
vb
Public Shared Sub CopyStream(ByRef input As System.IO.Stream, ByRef output As System.IO.Stream)
Dim num1 As Integer
[Code]...
Note that the CopyStream() subroutine is identical. The problem is that although decompressing seems to work fine, compressing does not. If I take a byte stream, compress it and then decompress it using the above code, I get a truncated version of the original stream (as an example, a 360485 byte stream becomes 311518 bytes). The resulting bytes match the original stream up until the point where it's cut off.
The only information I can find about streams being truncated is due to missing stream.Flush() commands but the output stream is flushed in the CopyStream() subroutine.
I have this code for compressing datasets into files:
Using fs As New System.IO.FileStream(flnm, IO.FileMode.OpenOrCreate, IO.FileAccess.Write, IO.FileShare.Write)
Using zStrm As New System.IO.Compression.GZipStream(fs,
[code].....
I've written a backup utility for one of our applications; this process involves coping sub directories of a specified base folder and an unknown number of folders within folders. I've got the process down to copy the files and directories pretty easily but I want to compress the folder structure to keep the space needed as small as possible.I've found a few utilities that work well for getting the files from the specified base folder but not any of the folders that exist in the specified start directory.The one utility I found required me to recursively search directories for the variably named directories and I am hoping for a simple switch that can be used that says base folder/file and sub directories.
View 1 Repliescompressing sql server data (on the fly) from a select statement when accessed across the internet. i.e data is stored in Sql Server Express on a remote computer (1) connected via an Internet VPN. An application on a remote computer (2) on the same VPN sends a select statement to the SQL server machine.The data would then be compressed at computer (1) sent across the VPN and decompressed at computer (2)
The Reason is, broadband speeds are not the greatest in Australia, and it would reduce the size of the data transmitted, resulting in faster response, as the compression/decompression is done at each machine
I am trying to put some Visual Basic Solutions/Projects into Source Code Control. Is there a list anywhere of all the Directories/Files that are created Dynamically by the compile that I can exclude from the repository.
i.e.: Release or obj or dll directories
If so, is it the Directory and All the files under it, or do some of the files need to remain like .xml files.
Are DLL files created by creating a Class file in VB ? If not, what are their purpose ? If I were to create a class that held the functions I needed for my program to function, would the class file compile with the assembly as a DLL ? Do I have it all wrong ?
View 4 RepliesHi,Can anybody let me know how to identify file created version of two MPP files.Ex: I have two MS project files on my PC, one is created in MS project 2003 and other is created in MS project 2007. How can i identify the file created version of two files through programing.
View 2 RepliesIs it possible to open visual studio express files with normal visual studio?
View 2 RepliesIn my contact manager program I have been storing information by reading and writing comma delimited files for each individual contact, and storing notes in a file for each note, and I'm wondering how I could go about shrinking them all into one file effectively. I have attempted using data entry tools in the visual studio toolbox and template class, though I have never quite figured out how to use them. What would be especially convenient is if I could store data as data type IOwner (a class I created) as opposed to strings.
I'd also need to figure out how to tell the program what to do when a file is opened (I've noticed in the properties how to associate a file type with the program though am not sure how to tell it what to do when it's opened).
Edit:
How about rephrasing the question: I have a class IContact with various properties some of them being lists of other class objects. I have a public list of IContact. Can I write Contacts as List(Of IContact) to a file as opposed to a bunch of strings?
Second part of the question: I have associated .cms files with my program. But if a user opens the file, what code should the program run through in an attempt to deal with the file? This file is going to contain data that the program needs to read, how do I tell it to read a file when the program is opened vicariously because the file was opened?
I want to create a program that I can create a Text file folder on my desktop and move all the text files into the folder.
Here is what I have so far:
Below is where I create the Text folder:
Dim myPath As String = IO.Path.Combine(My.Computer.FileSystem.SpecialDirectories.Desktop, "Text")
[Code].....
Private Sub submit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles submit.Click
m_streamWriter.BaseStream.Seek(0, SeekOrigin.End)
i += 1
m_streamWriter.Write("{0}{1}{2}{3}{4} ", i, " ", TextBox4.Text, " ", DateTime.Now.ToLongTimeString() + ControlChars.Lf)
m_streamWriter.WriteLine(" " + ControlChars.Lf)
m_streamWriter.Close()
[Code]...
I have a Datetimepicker, when i select a date it brings up in a listbox all the files created on that day but in no particular order. So i wanted it sorted by when they were created (not to fussed either ascending or descending). i tried using the code below with no luck, This adds multiple of blocks of the same files on the selected date
[Code].....
How do you do it? I've looked it up everywhere and failed to find anything. If there is a previous post I missed that discussed this, post it as a comment and forgive me. <scenerio>Friend and I are working on a VB project. We want to export and inport folders of information, and to do so neatly, we wanted to compress the files in the format we made for our program, then be able to decompress it within the program as well. If theres any other way to do this without compression and decompression
View 2 Repliescreating a new folder on a temporary file and moving/copying a file on the newly created temporary file.
View 4 RepliesI have a program that creates excel and word documents from another main Excel workbook. Essentially it opens excel checks data, posts data to appropriate forms. It then saves them as (number from main excel) & date/time stamp and corresponding extension. I want to be able to list the created documents according to the number from the main excel workbook.
[Code]...
How can I get the output data of sql procedure from SQL Server to my asp.net[vb.net] page dropdown list?<asp:DropDownList ID="DdLocation"></asp:DropDownList>
View 1 RepliesI am compressing a dataset converted to XML using the GZipStream class added in 2.0. There are a few things bothering me about this. Here's the code I am using to decompress the XML file:
Using inFile As New System.IO.FileStream(flnm, IO.FileMode.Open, IO.FileAccess.Read, IO.FileShare.Read)
Dim zStrm As New System.IO.Compression.GZipStream(inFile, IO.Compression.CompressionMode.Decompress)
Dim buff(999) As Byte
[CODE]...
This seems inordinately awkward, as I am taking the stream, reading it out into byte buffers, then writing those byte buffers to a memory stream that is then passed to the dataset.ReadXml() method. The reason for this seems to have to do with what is happening in the line colored red. That line is adding a closing > onto the end of the stream. Without that, ReadXml complains about an unclosed dataset. I found out that the > was missing by writing the stream into a string and pasting the string into WordPad. Without that missing >, it appears that I wouldn't need to be using that memory stream at all, and could simply pass in the GZipStream to ReadXML, but as far as I can tell, it's impossible to look at the GZipStream to be sure that the > is not there, and it may be impossible to add it (I haven't tried).
So why is the > missing? Here's the code used to create the file that is being read into the filestream in the above
VB Using ms As New System.IO.FileStream(flnm, IO.FileMode.OpenOrCreate, IO.FileAccess.Write, IO.FileShare.Write)
Dim zStrm As New System.IO.Compression.GZipStream(ms, IO.Compression.CompressionMode.Compress)
ds.WriteXml(zStrm, XmlWriteMode.WriteSchema)
End Using
The real kicker to all of this is that while I was dissecting the first chunk of code, I added a line to check for cnt<1000. My intention was to see the last buffer that was being written into the memory stream to see whether the final > was actually there, or not. To my surprise, I reached the cnt<1000 twice. That means that one read did not read a full 1000 bytes, but read only 675. The next three or four reads were a full 1000 bytes, then the final read was just a few hundred bytes. It is my understanding that Read will return a full buffer if there are that many bytes left to read, and there were, so why did it return only a partial buffer? That suggests that there might be a hole in my XML, though with a half meg file, it's a bit much to read through it looking for something missing. However, the XML that was returned was turned into a dataset that I then merged into some existing data using code that has been working with uncompressed XML files, and I got an error that I should never have received. That may indicate that the XML was, in fact, missing something, though I will have to study the matter further to figure out whether or not that is the case. My major question has to do with the missing '>' at the very end of the file.
