Add Custom Plugins For The App For Additional Features, Without People Having To Download A Whole New Update Each Time?
Nov 28, 2009
I am trying to figure out an easy way to add custom plugins for the app for additional features, without people having to download a whole new update each time.i guess the way i'd want it to work is,the program will auto detect the plugin file. Then, add's a specific value to either a button array, or add's a picture, etc.Once that button is clicked, it will open a new form designed the way i want it. from within the plugin itself.So its a module.What would be the easiest way to do this?
I am looking for a way to obtain some additional features on a treeview. Both, to show as to be able to input some data with a particular hierarchical structure For that on each node I need next to the nodetext a entrypossibility to input some data or to make a selection. This input possibility should be either a textbox, a combobox or a chechbox. An example of what I wisch is almost this article, except that the comment column is only a fixed text, and that I need there a input control like a textbox, or combobox.
How can I let people download my software that i have made. the furthest I have got is that people can go to google docs and download the .exe file. But they have to choose a place to save the file and create a desktop shortcut themselves. How do I do this: Can I use SharePoint?
I want to store additional information about a listview item using a custom class, but I can't seem to get it to work.I'm currently using this code to accomplish something similar using a listbox item.I just want to do the same thing with a listview.
Public Class myListboxItem Public id As String Public rootFolder As String[code]....
I forgot to add "Inherits ListViewItem" to my class.I'll update the code listed here to serve as an example for others.
i try to make a program that can share a database to other people using a upload/update system but when i try to download/upload it keeps saying mdf file in use how can i make the code so that it Uploads and overwites the file without that error.as it must be so it must upload to my server (build in)and download (also build in)the error gives file in use constandly how can i fix this issue?of that file in use problem. even when these no querry or other code running?
Now I upload update to a share folder inside the company network I have full Permission access & everyone read onlyas any one out side the company can't use the program so there no password on the share folderbut I need now to protect the share folder as I have to use real IP on the database connection to allow the company branch's to access the database
The idea with this form is to add the futures which is calculated when the button is pushed but I need the list to update every time and show the values each time to which the previous value is added to the new calculation, e.g. of what it should look like in listbox:
Year 1: $1,290.93 Year 2: $2,724.32 Year 3: $4,350.76 etc....
I have been working on this a while and I am at a standstill, I was given a function to clear the form everytime it calculates but I don't know how to implement it, I am new to VB. Here is what I have so far:
Public Class frmFutureValue Private Sub btnCalculate_Click(ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles btnCalculate.Click
I would like to ask. I have several files on the server about 50 and I need to withdrawinto my PC and still create the folder "pack" when no longer needed vytvo ena.AleI'd put a couple of conditions.
How I can do update my program, I try do this:My.Computer.FileSystem.SpecialDirectories.Desktop) but this do error with no name of file. How can I do download
Any VB2008 code that would allow me to download files through my program (like an update service), without it freezing, while displaying the progress like that of IE7, etc... using a progress bar, and that displays the size and speed?
i have made a program and added a update check button.If an update is available it lets the user know and if they click update a hidden webbrowser goes to the download address like:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
WebBrowser1.Navigate("http://mydomain.com/myprogram.exe") End Sub Well this works and prompts the user with a file download dialog(default for windows)
But say they have "myprogram.exe" on there desktop and try to save the new updated one there it will ask to overwrite and thats fine but the program is in use as they have click update.
Iam working on a Download Manager, but I dont know the codes for calculating the download time and how to stop ( not cancel) the download and then continue it. [code]....
i have a program that i made and i want it to check for updates everytime it starts i dont wanna use publish is there a way for the program to download the new version every time it starts and delete the old one?
I made a sort of downloader program in Visual Basic 2010, and it downloads okey. It reports the full size of the file, and how much that has been downloaded right now and the percentage.
But, a function that i am missing is to show the user how much time is left on the current downloading. I have searched for it, but i couldn't find any solution that would work.I should also mention that i use a webclient for the actual downloading part.
I'm trying to put together a plugins system with .NET, and I'm not sure if I'm doing it correctly. The basis of the system is that a specific directory ({apppath}/Plugins/) will have a bunch of precompiled DLLs, and I want to look through each one with reflection, and for every class available, if it inherits a specific base class (this is defined in yet another DLL, but I'll go into that later), then create an instance of it and call a specific function in said instance.
Public Sub ScanPluginsInDirectory(ByVal Directory As String)
Dim Plugins As New IO.DirectoryInfo(Directory) Dim Files As IO.FileInfo() = Plugins.GetFiles("*.dll")
[CODE]................
The specific problem I have is, I'm not sure this is the right way to do this. Would the method I'm trying to do work, if it can be assumed that A.Plugin() actually exists and any structures and classes referenced here are bug-free?
expand my program by allowing people to make plugins for the program. I thought of a way to do this: They can make a form/plugin on a form in VB then they can save it and upload the Form1.VB file and when you put that in a folder made by my program in "My Documents" my program will run that form like its, its own.
Firstly, I understand that this might sound more or less abstract, but this is because I have no previous experience in such applications. I completed an application using Visual Basic and is running and tested. What I want to do is to make this application expendable i.e I could write other pieces of code and I would just plug it in to the application "somehow" and it would be added as a functionality.
I've use VB net to create a application that can download the real-time data from a device for every second. Now I want to upload the data to a website in real time. (So some who is far away, can also check the data through the website)
I created a software which download files from the web. I also added a progress bar which shows the download progress. Every thing works fine.
Now: - How can I add a label that will calculate the time left for the file to be downloaded and another label that will tell the speed of the download? - Would it also be possible to add a label which calculates the size of the file that is begin downloaded?
Here is what I declared: Imports System.Net Public Class Form1 Dim WithEvents Download As New WebClient Dim WithEvents Download1 As New WebClient Friend WithEvents Label1 As System.Windows.Forms.Label
Here is what I have under the download button: Download.DownloadFileAsync(New Uri("URL" & ComboBox1.Text & ".rar"), Textbox1.Text & "" & ComboBox1.Text & ".rar")
And here is what I have under Download_DownloadProgressChanged: ProgressBar1.Value = e.ProgressPercentage Label1.Text = e.ProgressPercentage & "%" If ProgressBar1.Value = 100 Then MsgBox("Download Completed!", vbInformation, "Info") Label1.Text = "0%"
Is there any way to download multiple files at the same time from a remote server? How I am doing it currently is I get a list of files from the target folder on the server then I loop through that list & download each file 1 at a time. For 100 small files it takes about 45 seconds. I'm guessing that the bulk of the time it takes is logging in to the server for each file to download, so 100 files means it has to login, download & logoff 100 times. Is it possible to login just once, download the 100 files then logout?
I want to use C# and VB.Net in Eclipse 3.7 Indigo.VB.netI could not find the plugin about VB.net in Eclipse.So I want to know is there a plugin for Eclipse that allows you to write C# or VB.net code using the .Net Framework 4.0 or 3.5?
I have a vb.net project that loads "plugin" dlls at runtime to crunch some data in slightly different ways and return the results. To do that, all the plugins implement the same interface, so the GUI couldn't care less how the plugin arrives at its final dataset, just so long as all the plugins deliver it back to the GUI in the same way.
I'd like to set up per-plugin options in addition to the main program options. I have an options form that accepts an object of type System.Configuration.ApplicationSettingsBase and displays the contents in a PropertyGrid control, so it'll show any My.Settings object the same way. Question is, how do I pull the My.Settings object out from a plugin that's loaded at run-time?
While I've mainly been developing small applications for personal use, I stumbled upon making a touchscreen application for a close friend. While he is not very good at programming, he is pretty well at drawing/etc... So, I thought about expanding my horizons some.I already have code that loads images from a folder, and made that folder changeable via the program, so in effect, probably a horribly coded way of skinning some parts of the program (the buttons). But then I though about it some more and really wanted to learn a better way to make my programs 'expandable'.I have begun searching about how to make a program that can be used with plugins, how to make plugins, and so on... I am researching about dynamically changing controls and other things, so that when resolutions change, I don't have to code each individual buttons new size/location, and, most importantly, a way to implement patching/app upgrades...
how to create a stable plugin architecture. Stable because I plan on opening up plugin creation to the public but I dont want a sloppy coded plugin to take down my whole application.
So I thought of using an AppDomain per plugin and I did a little seaching. But it seems that even using a temp AppDomain to load plugins and then unloading it once all assemblies have been inspected raises complexity allot and I was planing on using an AppDomain per plugin.
I feel the gained stability (if there is any at all) may be raising the complexity so much the app will never be done..
Is there another way to both create a stable application and at the same time making it extensible?
I cases where the host calls a defined function via say IPluginInterface I guess I can pack a whole lot of try catch blocks around that call but what if a plugin insisted of a timed routine that would run continously without being invoked from the host other that a starting call to StartPluginService or something like that?
If I include a plugin like that in the default AppDomain and it blows up I sure will blow my own foot off right?
I am trying to create a plugin system where plugins can be dynamicly loaded (we don't know how many there are, what their classes are called, ...)This is sample code for a plugin:
Code: Public Interface IPlugin Sub bla() Function bla3() As String End Interface
[code]....
This code SHOULD msgbox("yay") when it finds a type that implements my IPlugin interface. Yet it never finds one. I can't find what I did wrong. It gets to the debug.print("2"), but never gets past the "If GetType(IPlugin).IsAssignableFrom(t) Then".
I have been working on a UI app (written in VB.NET and using WPF) which creates charts using the Microsoft Chart Control for Windows Forms. The application retrieves data periodically from a remote database, parses and formats the data to create series, and then creates a chart based off the series which is then hosted in a WindowsFormsHost control. So far this process has been working well.
How to implement my own events I'm not sure why do I use them. I mean instead of rising event you could simply call functions right? This is as close as I got to a good reason: 1) If you call a function that does one thing and then based on result it needs to do something else it may be a good idea to do that something else in event function that is raised when that first thing was done. This way you avoid creating long functions and can make system more intuitive. 2) If object1 is inside object2 (a variable) and object2 has function DoThis and in that function affect something in object2's parent class it's better to use event in object1 rather than mess with parent (object1) inside object2.
