Use System.io.packaging To Create Own Zip Class?
Apr 28, 2010
I'm trying to use system.io.packaging to create my own zip class. I've got it to work, but i'm not happy with the compression rate. In the code below I've set it to the maximum compression rate, yet winrar is able to create a zip (at maximum compression) that is 2/3 of the size when I make it. Am i doing something wrong?
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Sep 3, 2010
I am trying to compress and uncompress files. I have read that System.IO.Packaging might suit my needs, but I can not find it. I am using VS 2008 professional. Imports System.IO.Packaging at the top of class does not work (it throws an error). I did find system.io.compression. Does this replace packaging? If it does, does it handle .7z and .rar files?
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Feb 13, 2012
This is the code I have right now
pZipFilename = "C:\123\1234.zip"
Using pkgMain As Package = Package.Open(pZipFilename, FileMode.Open, FileAccess.Read)
For Each pkgPart As PackagePart In pkgMain.GetParts()
...
The problem I'm having is that pkgMain.GetParts() never returns anything even though the .zip file has around 100 items in it.
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Jul 15, 2009
I am attempting to read Excel 2003 cell content through a Visual Basic 2008 program. Searching Help for the subject yielded an example Function named XLGetCellValue (ByVal fileName As String, ByVal sheetName As String, Byval addressName As String) As String
This function required the following Iports:
Imports
System.IO.Packaging
Imports System.Xml
Imports System.IO
upon pasting the above three Iports to the Program, Igot the following error message:Warning 1 Namespace or type specified in the Imports 'System.IO.Packaging' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases.
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Jun 11, 2009
I have had several occasions recently to access a specific class several times over a relatively small time frame.So I've been storing the value of the class in Session and trying to access it on page load, if it's not available creating a new instance and storing that in session.
So instead of constantly replicating the same code for different classes on different pages I'm trying to create an extension method to do this for me.
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I'm stuck on what to do when I make my new instance of my class (it would have to have a New() sub)
I'm not sure where to go from here... or even if this is the best way to do it.
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Mar 6, 2010
I have a module with generic constants, subs and functions.I would like to be able to use the module in multiple projects in one solution.I also want it to work like the class System.Math, where you do not need to declare and instance of the class before you can reference it.[code]I want to be able to call ClassLibrary1.MyGenerics.Half() just like I can call System.Math.Abs()
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Mar 12, 2010
When I do this
Public Class cInherits : Inherits Panel
I get this: Base class 'System.Windows.Forms.Panel' specified for class 'MenuButton' cannot be different from the base class 'System.Windows.Forms.UserControl' of one of its other partial types.
How do I inherit?
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Jul 6, 2010
I'm making a custom class that mocks the System.Drawing.Rectangle class because the Rectangle class doesn't have a name property. I need a name property because I am adding all of my rectangles to a collection and I need a little more info stored than just their locale and size. So I changed the _onPaint event but nothing is working out when I run the program?
Public Class Rectanglar : Inherits UserControl
Public BackgroundColor As Color = Color.Blue
Public Sub New(ByVal name As String, ByVal XY As Point, ByVal Widthy As Integer, ByVal Heighty As Integer)
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Dec 28, 2010
I would really like to know if there is anyway in which I can package two or more set up files together with my vb.net application; so that after installing the application, it automatically starts installing the other applications from the other set-up files.
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Oct 1, 2008
I've been creating short test apps repeatedly to try to understand some of the concepts in VB.NET.For the most part it has been illuminating.I read Bucky's .NET knowlegebase tutorial on passing objects as parameters to newly created forms. He shows how to create a new class that inherits from the base form class and define a New() method with parameters Extending the concept I thought about doing the same thing with a form that was created at design-time (In this case Form2).
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Apr 27, 2011
I want to read a number of items from a file and then associate each of those items with a new button at run-time, so that when the user clicks one of the buttons I can display some information about that item.Can I use a LIST to manage these buttons and items? Can I create a new class and have each list item of that class, such as 'btnID', 'btnText', etc... ?
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May 9, 2010
how to deploying and packaging in vb.net2008
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Jan 24, 2010
I have prepared an application which uses SQL Server 2005 Express Edition as its database and Reports using Crystal Reports which comes integrated with VB .net 2008.I am able to package and deploy my application alone. To the system where I am going to install doesnot have SQL Server or Crystal report runtime files.I want to include the same in my package so that it gets installed and followed by my application.I have chosen install application from the same location and tried to package it. It doesn't work.Please suggest me steps so that I can have the required softwares packaged with my application so that the user when he installs, it installs at one go.
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Mar 27, 2012
just picking up on VB.net after a long absence and still trying to get into the swing of things.
I am looking to write a program for work, which is essentially a skills database. However, I need the program to have a locally held database, which does not require a server.
What is the best way to go about incorporating a dataset into the current project so that when built, it will be accessible on any computer that runs the exe file?
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Jul 30, 2009
Code: Dim dom As New DOMDocument30 dom.async = False
dom.Load(serverAddress & "/App/filelist.jsp?type=content")
For i = 0 To dom.childNodes.item(1).childNodes.length - 1 downloadfile(dom.childNodes.item(i), mcount, currentpath) Next
The above code is activated upon clicking of a button. i have the server address declared. and using the domdoc to load the jsp file to generate the xml data. and using for loop, i call the download file function which accepts the following parameters
Code:Public Sub downloadfile(ByVal domdoc As Xml.XmlNode, ByVal totalcount As Integer, ByVal currentpath As String)
The totalcount and currentpath work fine, but when i pass in the dom.childNodes.item(i) , error pops up.
--------------------error message------------------------------------------Unable to cast COM object of type 'System.__ComObject' to class type 'System.Xml.XmlNode'. Instances of types that represent COM components cannot be cast to types that do not represent COM components; however they can be cast to interfaces as long as the underlying COM component supports QueryInterface calls for the IID of the interface.-------------------------------------------------------------------------------
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Aug 21, 2009
Should I consider packaging with my program the .net framework files?
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Feb 21, 2008
I might not be placing this query at the right place.But i am having a problem packaging my vb.net application into a windows installer.My vb.net [3.5 fw] uses windows media player component + shockwave component. Now when i select a new project and go to setup wizard.. it gievs me the following error/warning:"the following files may have dependencies that cannot be determined automatically.[code]
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Sep 8, 2009
I'm using the System.IO.Packaging namespace in my VS2005 application. The zip compression works fine for 1 or many files. The unzip though for some reason seems to only unzip one file. Initially I did this in vs2008 at home and it worked fine, but now at work with vs2005 it's only unzipping one of the files. Can you see anything that I might be doing wrong?
Public Sub UnzipArchive(ByVal zipFile As String, ByVal UnzipLocation As String)
If (Not zipFile Is Nothing And Not UnzipLocation Is Nothing) Then
Dim zipFilePackage As Package
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Mar 17, 2011
I have developed an app and an installer for it and everything works fine. I now feel I should add a bit of obfuscation to the code before it gets released into the wild. VS2010 comes with the CE edition of dotfuscator so I've run it and it produced an .exe in a 'Dotfuscated' folder. Do I just replace all four 'Primary output from. custom actions with the assembly from the Dotfuscator folder or am I missing something?
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Sep 17, 2009
i want to save a jpeg file from one system to another system which is connected through network.its in a windows application.my target system's name is "abc".how can i do this ?
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Apr 20, 2011
I was able to create an application in VB.net that talks to a SQL Server CE database.Now i want to deploy this application using the publish feature with clickonce.An issue im having tho is when I install the application on another computer it keeps looking for my sql server on my development pc.
Ive added the .sdf when i package my solution but its still an issue.How do I change my connection string to connect to the .sdf file that I included in the package? this is my current connection string which looks at the sql server: connectionString = " Data Source=CHRIS-PCSQLEXPRESS;Initial Catalog=ce_db;Integrated Security=True"
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Jul 21, 2011
I'm developing a very simple program in VB2010 Express that will create folders based on entries in a remote database. I am fully aware that the minimum requirement to run the exe is the latest .net framework, however I have a few added resources to the file, and when I try to run the executable on another computer, it fails to run stating that the resources are missing.
How do i compile my VB code AND the resources together into a stand-alone executable that only requires the .net framework to be installed?I have already tried to google this issue, however every answer I find has nothing to do with my initial question..
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Feb 15, 2012
I want to package and deploy windows app which has images in allimages folder,resource folder is also generated that refers to all images in my vs 2008 application.I have calc.exe
in debug folder.I tried deploying using setup project that uses windows installer, when i run application some images r not seen and error is generated.whatt r exact steps to
package and deploy winform application in vs2008.
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Feb 23, 2011
Can we create objects of a C# class from a VB.NET class and vice versa?
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Jun 11, 2012
I want to create a class that will "search" for something. Basically I load up the "search item" when the class is created and inside the class is logic to do the "search". The result of this logic will be more "searches" that I want to start. How can I have the logic in the class create another instance of the class itself?
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Nov 28, 2010
I want to create a class is it where I can do...
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How do I do this? Do i create a class and create a instance of CarData? but how do I add Color and Year etc to it?
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Sep 29, 2009
I'm using the System.IO.Packaging namespace to compress a file. I'm getting an error that says 'file contains corrupted data'. So i tried using a txt file with just a few characters, and I got the same error. I read where someone said to make sure you have all streams closed and I checked this and do so I'm not sure what to try now. Here is my code.
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Sep 10, 2008
I'm in the process of trying to create a class that will allow me to create windows shortcut; Im using the following PDF file that gives me the shortcut file structure.
Ive been able to successfully load a shortcut file and parse its Lnk File Structure but now Im on the Shell Item ID List structure but I cannot find the Structure of the ITEMIDLIST anywhere
Furthermore I know I could use the Windows script object, but this is a dependency Im trying to avoid if I can, hence writing my own Shortcut class.
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Feb 27, 2011
I'm try to create a class has been create by main class only by protect sub New but how do I create it ?
Public MustInherit Class Rune
Protected MustOverride Function Create() As Rune
Public Shared Function Factory(Of T As Rune)() As T
'I can't use "T As {Rune, New}" because Sub New isn't Public
'Return (New T).Create
End Function
End Class
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Aug 10, 2010
I'm getting 'Catch' cannot catch type 'Object' because it is not 'System.Exception' or a class that inherits from 'System.Exception'. and 'Expression detected' Code underlined in blue: Catch obj1 As Object When (?)
Private Sub OpenJAMem()
Dim num3 As Integer
Try
[code]....
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