Prevent Caching Of Data - Only Allow To Download Latest Files
Jul 2, 2010
I'm using interop.msxml2.dll to open XML and txt files off an Internet server. The response that is received from the server is stored in my application's variables. I've recently noticed that the application doesn't always update the information when it goes to download a file that it has already downloaded in the past. For example, if it downloaded a file off the server when it started up, then when it attempted to download the new, changed file 5 minutes later, it would still return the same value as the first one. Even after closing the application, it would still return the incorrect, older value. How to stop this "caching" of data, and only allow the program to download the latest file off the server.
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Mar 19, 2012
I've tried applying several suggestions found on the web, but still experiencing cached results when querying CRM 2011 with linq. My web.config reads as follows, which is supposed to disable result caching:[code]I can live with that, but it would be nicer, instead of recreating the context, to have a way of ensuring no caching either in code or in web.config.
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Sep 29, 2010
I'm not sure I wrote the headline right, but I've got a service that holds a password in memory. It's notification thing, and so will be running 24/7 ideally.
It uses a password to some other resources that I send to it at startup in a UPD packet.
I'd like to find a way to instruct windows never to stick that value in the disk cache so if the worst happened, the theoretical bad guy couldn't pick apart the cache and find the password.
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Oct 15, 2008
Basicly I'm downloading XML files with the Webclient class for processing and caching in a local database. There are three different categories of data, each contains 1 to n numbers of XML files. To retrieve the XML file I ask the server with following parameters in the URL:
[Code]...
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Jan 8, 2010
I'm pulling data from a Lotus Notes database, this works fine but when I change the data and pull it again, it doesn't take the changes, a restart solves this so it must be getting cached somewhere, how do I prevent it?[code]...
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Jul 27, 2009
Is it possible to cache dataset which is accessible globally.Example: One windows service creates a dataset and caches it.Another Web Application and Windows application references that cache and populates in datagrid.
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Mar 3, 2012
I'm just getting started with Visual Studio (2005), and my aim is to write a fairly simple application in Visual Basic that will need to store some data to disk.What I really want is to be able to send the application to the end users (xp, vista, win7) and have them just be able to use it without having down download all kinds of extras. For example I'm guessing that if I use an SQL database in my application they will need to download SQl server express or some other sql downloadable?
If so is there a similar downloadable for MS Access?I'm just in the 'seeing how things work' stage at the moment and I don't want to waste time going down the SQL track just to find it won't actually work unless my users all download SQL to their machines (which they won't want to do).
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Oct 5, 2009
A quick question on caching dataset objects. How can I know if the data is changed in Sql when caching data? I don't want to specify time constraints but used a strategy where data is changed in sql and I have to refresh my cache?
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Feb 27, 2009
We have data that's updated nightly in a database residing in the same instance as my app's database. So to save on database calls, I want to cache this static-for-the-day data into a List(Of MyObject). From a theory point of view, should this cached List(Of ) be cached in the presentation layer code, via a global variable? Should it be in a global variable in the .DLL?I'm thinking in the .DLL, because I created a service layer, which is exposed publicly to the GUI and makes calls to the data access layer inside the .DLL:
Public Shared Function Search(ByVal criteria As Core.Other.Customer) As List(Of Core.Other.Customer)
' TODO: Check the customer cache to see if it has been populated yet. If not, populate it.
If 1 = 1 Then
[code]....
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Jun 10, 2009
how can I calculate the download speed if I use a webclient to download files async
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May 10, 2011
- I'm working on a windows forms application (.NET 4.0). - My form contains a 'Fast Line' chart using the Microsoft chart control included in VS2010. - The chart gets filled with about 20,000 datapoints. - My application then starts receiving market data from a server via DDE (Dynamic Data Exchange) in real-time and adds it the chart.
Note: I have no control over the server and so I have to deal with DDE only even though it's an outdated technology. VS doesn't support DDE anymore and so I use the Ndde library which works like a charm.
Private Sub StartDDE()
'first we connect to the DDE server:
Dim client As DdeClient = New DdeClient("ServerApplication", "Bid")
[Code].....
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Jul 14, 2011
I've run into a problem that I'm at a loss to understand and/or work around. I'm working on a settings page that updates an XML file. The page has an XmlDataSource with a transform file (to filter and sort the values) and a DataList that is populated from the XmlDataSource. A user can enter a new group name into a text box and click a button to submit the form. When this happens, the new value is successfully added to the XML file.
[Code]...
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Jun 5, 2011
I am creating one application visual basic and sqlce.I have two forms name Form1 and Form2.
I used Form1 to add data to database using OLeDb command and used Form2 to show data in datagridview by using dataset[code]....
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Dec 11, 2011
I wrote a program to download and play AVI files the files are large in size and long time wise. I have the files playing as they are being downloaded but i can't see how long the file is or seek reliably. i was reading that the AVI headers are in the last 512kb of the AVI file *why would't they put it at the start* lol so my question is is there a way to download the last 512Kb of the file i'm downloading. i have the Bytes Read and Length of the file while its downlaoding i'm just not sure where to go from there, or how to do it atleast. If i had the length in time of the Avi file i could set the trackbar to be able to seek properly. or if someone has an idea how i could get the time of the video by using fps and some math i could prob do it that way too but idk how i would tell how i can find how many kb are in the fps i'm sure it changes so think that way is't going to be reliable. how to get the last 512kb would be the best option not sure if it can be done even.
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May 3, 2009
small project .i have the exe inside bill which i will install in another system the bin files is ok it work finei need to make it secure . can u suggest me how to make it suceure so that if someone copy and use in another machine it cannot run and display message. it can be by registry or by dll files
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Apr 7, 2009
so I know how to protect my data know. But how can I create a file that only I can open/delete/move?
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Sep 20, 2010
can FileSystemWatcher prevent the user to delete a file ?
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Jan 21, 2012
I want to prevent file opening (temporarily) on certain files. I've tried encryption, which is fine, but a bit slow for my purpose. The actual end product doesn't have to keep some computer hacker type from getting in, just the lay user. I was wondering if it was possible to encrypt only part of a file and reverse this after or what options I had.
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Mar 4, 2009
I am creating a setup file using features brought by Visual Studio.I have some files which can't be removed from the application's folder. How to put the condition on it? or how to prevent user moves it after installation is done?Those files are critical (eg .dll).I already set the 'Hidden' property to 'true', but I think that is not the correct way :)So I try to find another way to do that.
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Jan 14, 2011
I have code on log in form but it only get the latest data on username and password column on my database
Here is my code
Public Class Users
Dim MyLogIn As New myRecords
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
[CODE]...
This is my connection:
Imports MySql.Data
Imports MySql.Data.MySqlClient
Module myconnect
[CODE]...
This is my record:
Imports System
Imports System.Data
Imports MySql.Data
Imports MySql.Data.MySqlClient
[CODE]...
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Feb 13, 2011
Im haveing trouble getting this code to loop.Im trying to download files for which I have got the file names listed in listbox3.At the end of each file d/l ive got it to preformclick() to refresh the downloaded file list.Ive got it to d/l one at a time and moves to the next in the listbox but stops there, atm ive taken the do while out as it doesnt work.
'Tab2 Download all server SS
'(RFN is Remote File Name/path, LFN is Local File Name/path as string)
Dim RFN As String
Dim LFN As String
[code]....
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Apr 23, 2012
I have a problem with my file download function.
[code]...
My problem is with my loop all files downloading at the same time but i want to download them one by one one will finish and other will start
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Mar 18, 2011
My last topic about finding a file is now resolved i just had to get the subdirectories and there will always be one so i know how to do that. My next question i am lost at. My program is going to download multiple files and each file gets downloaded to a certain directory.
[Code]...
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Jan 24, 2009
I made a Class Library project that contains the main classes that my Main Project needs because I don't want to main classes when I distribute my project. I've successfully called and used it in my Main Project. But when I started debugging and stepping through my code which involves calling and using the class I wrote in my Class Library, I noticed that the class' file in my Class Library opens up during debug mode.
how can I prevent the Class Library's files from being opened during my Main Project's debug mode?
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Jul 23, 2010
I understand you can't download compiled files because of viruses but how do you use the seperate files? I downloaded something and it only gave me a bunch of .frm and .frmx files.
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Jan 30, 2011
i have a plain text document uploaded to my website. The text document contains links to files that need to be downloaded for my application as an update ( i have yet to figure out how to make my own installer so i am making my own updater which is MUCH simpler). Each link has its own line. I understand how to load the file into a RichTextBox with vb.net but i do not understand how to tell one button to download each file listed.[code]
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Jun 10, 2010
How can i download all files and folders (only if folders exist ) from this online directory [url...) to my start path of Application.[code]...
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May 19, 2010
i need to download all files fron FTP server folder. is it possible to download the folder from FTPserver? if not is it possible to download all files from folder because i have a requirement that i need to download all the files from that folder in FTP server. even i don't know the files name. So is there any sample code for this? i have xml files in that FTP server folder.
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Aug 26, 2011
create a script that will download folders and subfolders from a FTP server to a local server.
example:
server = 192.168.1.1
user: user
password: 12345
[Code].....
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Nov 1, 2011
I have a web folder e.g. "url..." if I open this address in IE it show me all files which this folder have.I want to download all files but I don't want to hard-code name of files. I know I can get the files with webclient.DownloadFiles(@address,@filename). Is this possible to download all files or at least get the name of files from the web folder?
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