DownloadFile - Put A 'check Update' Button
Mar 29, 2012
I'm a beginner to Visual Basic, and I made a simple program, however I want to put a 'check update' button in it... It consists of downloading a txt file that contains three numbers, if it match with the version of the program it says 'you already have the most up-to-date version' or else it asks you to download the update and then bring you to the dev blog of the program I made, however, when I download that file, it brings me a blank txt file instead of the one I uploaded into the site. By the way, I'm downloading it through HTTP.
[Code]...
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Jun 21, 2010
Well on my application there is a check for update button and it needs administrative privileges in order for it to download the update (it needs to make a version change in the registry) and I don't have permission to. How can I make it so it asks for permission?
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Oct 11, 2010
I use VB 2008. I want to check that text boxes have correct data but not at key pressed key down event. I want to check when user fill the form if all have correct data then insert into database otherwise get focus of specifiq textbox which have wrong data. I see many examples but all is applied on keydown keypress etc events. I just need a class i send Textbox as object in that which return true or false. I need one method in that class which check only numbers with decimal point and limit decimal places to 4 digit.e.g 12345.9876 and other method check A to Z and a to z with some special charecters like @ # $ % & ! ;
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Feb 17, 2010
I am trying to get a checkbox to activate and deactivate a button. While the button is deactivated it is dimmed or faded out. While Actvated the Text and button is fully visable. I did use ctype to activate the button from the checkbox.
CODE:
I found this code in the help section online to enable & disable an inactive button but do not know how to apply this to the button.
Enable or disables the automatic generation of inactive button images.
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Oct 12, 2009
I got a hard one for you devolpers.In a popular C++ program BitComet they have a Check For Update feature.How would I have a simple Check For Update and have it warn the user every 1 week or so.
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Apr 4, 2009
Alright, when I open my program I want it to check for updates and if there is an update I want it to download. So far I have a text file saying the most recent version and then it downloads that file and compares it to the current file version. If the current file version < recent version then it will download the file. :O Can someone help me with the code? :3 I have a hosting server with direct download links.
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Jun 5, 2011
I would like to see an example how to check if pappssn exsist in database before the update is complete. If so to raise an error record exsist. My front end is VB however i would like to handle this within SQL in my stored procedure if possible.
ALTER Procedure [dbo].[usp_insertmemapp](
@pappfname nvarchar(50),
@pappmname nvarchar(50),
[Code].....
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Oct 22, 2010
I am using Visual Basic 2010. I use successfully webclient downloadfile to download a file from a remote website. Now I want "protect" downloading so one have to "login" before to download the file. (i.e. I should like it is not possibile to simply type [URL] to download the file and so the downloading is possible only by my VB app.) I "protect" the website by a login page. I try to use webclient.credential(username,password) but the system message is error HTTP 404 (page not found).
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Feb 13, 2009
I have one radio button and one listbox .i want code for display listbox depends on the radio button check true and false.
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Aug 27, 2011
I want to check for a system update every .25 seconds. It's very important that it is always .25 seconds apart. I was trying to use do until/while...loop, but it wouldn't let me insert a delay. Does anybody know how to do this/where I could learn to do this?
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Dec 26, 2011
I have an interesting problem. I need to write a program that checks to see if data has been inserted or updated into a Microsoft access database . The program needs to be compatible with both types of access database, so using triggers is not possible as it wont work in access etc
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Mar 25, 2009
Is there any way to check from .NET if windows update is enabled?
I want to prompt the users every time they log into my app that their computer might be at risk and give them a link to windows update website (or windows update application from control panel).
Preferably it should work on XP, Vista and Windows 7. Maybe there is a registry key or even better an API?
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Apr 22, 2010
Supposedly I create a file called "hi.txt" and I use Process.Start(filename) to open it. then I File.Opentext(filename), edit it and close it using stream writer/reader, while I still have that file open.
In order to see the changed text I need to close "hi.txt" and reopen it.
Is there a way to automatically do that? Been experimenting a bit but with no luck.
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Jun 1, 2012
Is there a way to check if a site had a page update or a new post easily?? Even just to check if something had changed on the page.
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Mar 23, 2011
recently discovered the My.Computer.Network.DownloadFile method and would love to use it to download files from a website (https://www...). I can include a username and password in the DownloadFile parameter list,but will it send the password in plain text? If so, is there a way to send an encrypted password?
There seem to be many ways to download files. What are the advantages or typical uses of each?
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Apr 23, 2010
I have tried using the My.Computer.Network.DownloadFile method but unfortunately it is slow.
Executing the simple command below takes ~5-10 secs, which I would say is a lot longer than expected for downloading a 9 kb file.`My.Computer.Network.DownloadFile("http://www.google.dk", "j: emp est.html")
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Dec 21, 2011
I have one problem with WebClient.DownloadFile
On asp.net server I have page with this code:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
If Not String.IsNullOrEmpty(Me.Request.QueryString("Tool")) Then
[code].....
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Dec 7, 2011
I have looked through the entire internet (well that's what it feels like) to find this out.Tables - Authors and Titles add new title must be linked to an author, so I need to check that the author exists, if so, update the titles table with the user data from the textboxes. If the author does not exist, I need to insert the author first & last name into the author table, then the title info into the title table.this is in VB, using ASP.NET, and my database is a file, I'm not using SQL server, just Visual Studio 2008.
Dim insertParameters As New ListDictionary()
insertParameters.Add("ISBN", ISBNTextBox.Text)
insertParameters.Add("Title", titleTextBox.Text)
[code].....
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May 20, 2010
im slightly new to VB, i was wondering how I make the program check a file for an update, i kknow there is an option in the app settings, but when I go on it it doesnt recognize .vb or .exe files to check from.
If i uploaded updates to a server, how would It check that for updates? and what file type would i need to upload it as?
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Oct 10, 2009
I found there is something related "OnceClick"[code]...
but how to use it?? Got better solution like tray icon prompt the new version available. then prompt user permission for update~
if user accept to update, it will download from server and install and restart application.
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Jul 11, 2009
There's an website which lists the manufacturer's of the items they deal with. Upon clicking on the manufacturer link we get the relevant list of items. There are around 60 manuf. and each manuf makes around 500 items.
The complete list of items of an particluar manufacturer is split in pages and displayed on the web page, one page at a time and also links to the next pages.
There are around 4 to 5 items newly added weekly for each manufacturer.
So what i wanted was , first the complete data must be stored in the database and displayed to the user , and later only the updates should be displayed to the user.
For this, what approch i thought is, opening each and every page of the website and then extracting the data form the site and storing in the database. Then again whenever user wants an update , again extacting the complete data from the website and comparing it with the old data and displaying the update.
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Apr 11, 2011
I have a small dilemma... how can I see the download progress when using My.Computer.Network.DownloadFile
My.Computer.Network.DownloadFile("http://some_url.com/a_file.txt", "the_file.txt")
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Mar 24, 2012
I'm trying to download a file from the internet by clicking a button in MS Access.
I'm trying to use My.Computer.Network.DownloadFile as described here: [URL]
Private Sub Command2_Click()
My.Computer.Network.DownloadFile("http://www.example.com/temp/xml_test.xml", "C:xml_test.xml")
End Sub
but the 'Microsoft Visual Basic for Applications' IDE that I'm typing this into seems to have no idea what I'm talking about (text just turns red).
Can I just not do this through the built in VB editor or can I simply load a library or something to make it work?
Sorry but I'm very new to VB and to Access so search results are not specific enough for me to understand - lord knows I've tried.
I'm using Access 2010 but the DB was created in an previous version - not sure if that matters.
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Dec 10, 2011
My.Computer.Network.DownloadFile("http://MyDomain.info/MyFile.zip", SaveFileDialog)Hi, the above don't work, what i need is for it to popup a savedialog for the user to browser for a location to download the file
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May 23, 2012
I am trying to write a program to download an image at certain time intervals from a website based on a start time, end time and the time interval. I am trying to use 3 timers to accomplish this. I want to be able to kick the program off and leave it running until I stop it. My code seems to work fine if I set the time interval for something like 2 minutes, etc. and sit and watch it, but if I set it for an hour and leave it alone, it gives me almost sporadic results.
I set it to start at 10 pm last night and end at 5 am this morning with an interval of 1 hour. It downloaded an image at 10 pm, 11 pm, 12 am, 1 am, 2 am, and 3 am and then there were no images for 4 and 5 am. I have tried this multiple times with different time spans, and seem to get sporadic results. Any insight would be greatly appreciated. Here is my current code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If TextBox1.Text.Length = 0 Or cmbStartTime.Text.Length = 0 Or cmbEndTime.Text.Length = 0 Or TextBox2.Text.Length = 0 Then
MsgBox("You must select an image destination, start time and time increment.")
Else
[code]....
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Feb 24, 2009
Well my Application should download a File from my FTP when i Click Donwload but i am having Problems it doesn't really Download it good:
Dim clsRequest As FtpWebRequest = System.Net.WebRequest.Create("ftp://------/public_html/----/" & lb_1.SelectedItem & "/" & "Firmware" & "/" & lb_3.SelectedItem)
clsRequest.Credentials = New System.Net.NetworkCredential("------", "-------")
clsRequest.Method = System.Net.WebRequestMethods.Ftp.DownloadFile
[code]....
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Aug 16, 2010
Actually i have to update a software daily on 20 computer and connecting to internet kill my ADSL connection. i would like to download the file on my server and then schedule a task to pick it up from the server share folder.how i can write this script and then put it on the 20 computer so that it come to check the folder on the server then update to the latest file?
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May 30, 2012
I'm automating downloads. I was getting this error quite a bit using Webbrowser to navigate to a PDF (various PDFs at various websites). In other words the PDF was already on display in the browser when I called WebClient.DownloadToFile. I got a LOT better results when I desisted from WebClient and switched to this API (just pass in the two strings along with zeroes for the other parameters).
[Code]...
And yet Webclient seems oriented for only two entries (username and password). How do you set up the credentials for three entries? I hate to abandon WebClient, but at this point I just don't know how to make it work.
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Feb 6, 2009
The below code for some reason isn't working with filefront. I'm grabbing the URL that returns the file to download but the wc.downloadfile() code doesn't download the file. It creates an empty file called 100.rar in my temp directory on C: but doesn't have any data. Is there something I'm doing wrong or is filefronts redirect messing something up? If I put the URL I get with the fixUrl variable, it pops up the file to download in my internet browser fine.
Imports System.Net
Imports System.Windows.Forms
Imports System.Security.Permissions
Imports System.Text.RegularExpressions
Imports System.IO
[Code]...
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Jun 2, 2011
I can upload excel to sql but when i upload again with old record for update and another record to insert new record [code]...
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