Best Way To Hold App Settings
Dec 2, 2010
I'm building a new industrial app using MODBUS/TCP talking to a DAQ unit that will have a lot of parameters and will need to be adaptable for different scenarios. For example, the units I'm connecting to have 12 inputs and 6 outputs, mapping for those may be different for each installation, and in one instance I'll be talking to 4 units together - if that's the best way to do it - each one will have identical parameters, just a different ID number and ip address. They will all be writing to a SQL Server database. Not sure if I'm better off having a Tab control with each unit on a separate tab or a different instance of the app for each one. Is one better than the other? The units will be polled every 200-500ms. 500ms seems to be more stable.
With so many parameters, is it better to store all them inside the application and access them through My.Settings or would I be better storing them in a database, either the SQL Server DB or maybe something like SQLite (one of my faves) or is there a better way?
Not done anything quite as big as this before and first time with MODBUS, but that bit is working a treat.
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Jan 13, 2011
The company has been using Visual Studio 2008 and .NET Framework 2.0 for approximately 2 years. During that time we released several versions (4.x.x) of our program to the public and were able to preserve the user's settings using My.Settings.Upgrade.During the past development cycle we upgraded the program to Visual Studio 2010 and .NET Framework 4.0 and changed the version to 5.x.x. Now, when a user upgrades from 4.x.x to 5.x.x they lose all of their settings.However, in all upgrades after that point (ie 5.0 to 5.1) all the user's settings are once again preserved.I checked C:Documents and Settings<USER_NAME>Local SettingsApplication DataCompanyName and it contains two directories:
ApplicationName_Url_aaa ApplicationName_Url_bbb
where aaa and bbb are 32 character strings. All of the user.config files for the 4.x.x releases can be found in the ApplicationName_ Url_aaa directory. All of the user.config files for the 5.x.x releases can be found in the ApplicationName_Url_bbb directory.Based on this information it seems like something changed when we converted our program to VS2010 and Framework4 that is now causing a different 32 character string to be generated. However, we have been unable to track it down.
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Jan 3, 2012
I have the following structure:OLD: frmMain (WinForm)uscStat (UserControl with Grid) In frmMain I'm able to make some settings and load the result of the settings via LinQ into the Grid of the uscStat.
[Code]...
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Jan 14, 2009
I just wondered if you can or can't save arrays using the settings system object. There seems to be no way of entering it at designtime. It seems implied you cannot create new user settings.subobjects at runtime. I'm looking to find the easiest way to save a populated array of PictureBox's. If the only way is a self/custom made/managed .ini file then I need to know so i can start on that but I was hoping to use some of all this phaff in the new frameworks usefully.
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Aug 5, 2009
I am rewritting my application to conform to ms standards. We used to save all settings to registry for user settings, servername, size and locations.so we are now saving them into My.Settings app.config the only problem is that each time there is an update clickonce will isntall the newupdate but now all settings are loist and user has to save everything all over again..
I am trying to follow the book here but it seems i keep getting stuck somewhere. registry has worked fine for years but i understand we must move on, but if stuff like this happens then i just wasted a long time converting all code to conform for it to not work..
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Sep 8, 2009
Is there a way to maintain application modified Settings in the settings files after a program update? i.e. I have 10 or so values in the settings file and the users can modify them... when I send a program update they revert back to what I initially programmed them to be.
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Feb 8, 2008
i have created a user setting named 'setmeup' as string, scope = user, value = "magical meow meow!".in my code i access it and assign it a new value like this...my.settings.setmeup = "howdy cowboy!"my.settings.save()application.restart()when the application restarts, i expect the my.settings.setmeup = "howdy cowboy!" but when i check its contents its still "magical meow meow!".but when i use application.exit() instead of application.restart() and manually restart the program, my.settings.setmeup = "howdy cowboy!" which is correct.what must i do? i want to use application.restart() because i don't want the users to double-click the icon again to start the program. i want the program to restart automatically.
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Apr 15, 2011
1. I can't find the file which reflects changes to user settings. This might be because I just can't find it (I can see a bunch of user.config files but they are all empty - weird!), or...
2. I'm not actually saving them when I think I am.
Regarding 2. - do I need to invoke
Is this all I need? And if so, why are my user.configs empty?
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Mar 25, 2011
I'm working with an Treeview and i'm new at it and i have 2 questions.
1. How can i save the treeview items, to settings (my.settings.history)
2. How can i save the treeview items as an TXT or XML file or another exception.
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Mar 3, 2009
my old vb6 program used to store to ini files now with .net I rekon I need to do something new.. was thinking XML but then in searching around I stumbled apon this my.settings stuff.. so I followed the instructions but something strange is going one..
1. whats the difference between the standard my.settings and adding a new class that is of settings ? anything ?
2. I made 10 new settings in the setting manager but when I try to change then it gives me the old squiggle line saying no go.
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Oct 30, 2009
I have created a settings-file for my plug-in-based app. When the mainApp writes the settings to the file, the pluginApp should read the settings from the settings-file (when opening or at runtime even better), but somehow it reads the settings from the app.config-file. This means that the pluginApp never will read the settings according the values of the file.
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Aug 5, 2009
I saw that you can also use a "Settings File" (Add new Item)to add your settings instead of the application settings. But I can't seem to write any values to the file. Someone with experience with the "Settings1.settings"?
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Jun 11, 2010
Small questions about the settings.settings. Are these settings saved into the registry? I'm want to use and external file for my connection-commands. I don't want to use the registry to store the strings. What do you recommend?
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Nov 11, 2009
I am writing a program that is going to take two dates (entered by a user) and compare them against each other to determine when something was purchased vs when it was paid for. I'm ok with everything except one part, and its a biggie, how do I have the user enter the dates (format) and how do I convert it from a string to a recognized date format? Does that make sense?
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Mar 13, 2012
Currently, I use SendKeys.SendWait("{Left}")
How can I hold the left arrow down?
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Oct 26, 2011
I really want to do this the proper way, it's just that I've been doing it the wrong way for so long, I can't seem to get past it.
in a console app if I start a timer or kick off a thread or bgw, the sub main runs right on thru and the app finishes and closes.
i need the sub main to just hold position until some event is raised then handle the event and come back to sub main or end depending if the event that was raised told us to end or not.
what I would normally use is this:
Do While KeepLooping
Wait(5D)
CheckTimedEvent()
Loop
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Jun 4, 2012
So, if this is how to hold a key down for an infinite amount of time:
keybd_event(CByte(Keys.Right), CByte(MapVirtualKey(Keys.Right, 0)), 0, 0)
How can I hold it down for only 1 second?
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Jan 22, 2009
i have maid a program witch has images in it from my hdd. Now when i build my program and send it to other ppl thay cannot see the images. i know this is becaws the path i directed to pull the images from is not on there pc nor do thay have the images lol. so my question is how do i put the images in the actual exe as in the actual program that i have built so all the images and stuff are all in there. so thay only need to run the exe and not have any sub folders to hold the images.
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Jun 24, 2009
so the way I have this working now I'M using System.Collections.Generic.List(Of T) for holding 100's of a structure.Dim Users as New List(Of User)
I was wondering if there was any better way or faster list container or something like this in the .net framework?
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Jul 11, 2011
I have over 9,00,000 records in my Access database but only a fraction of that is being displayed in the listbox. How Many Rows Can A Listbox Hold? Around 65K is the answer I got from my research.
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Nov 30, 2011
I am a first year coding student and we are starting out with Visual Basic. Up until now I have been able to figure everything out, but I have run hard into a wall and I don't feel like I've been taught how to get over it. Here's the thing.
First Form
Contains a list box for products selected, and four text boxes for Subtotal, Tax, Shipping and Total.
Second & Third Forms
Each contain a list box of books to select from which will be added to the first form.[code]....
I feel like I am doing it wrong right out of the gate - as you can see I am going by the item that the user chooses, and adding a constant value that I have pre-defined in a module. Then I add the name of the book to the first form - but here's the issue.That text string doesn't hold a value.SO, when I use the remove button on the first form - the text string removes but the subtotal, tax, shipping and total boxes do not change in the least bit because the item that I removed doesn't retain any value.
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Nov 29, 2011
I like to create a Structure that could hold 'Yes' or 'No' only; just like a Boolean variable could hold True or False.
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Jan 6, 2010
im using XML as my database and uses dataset to hold the xml. which one do you think is better to backup my xml?
1. write the xml to 2 location, default location and the backup location
dataset.writexml(path1)
dataset.writexml(path2)
2. write the xml to default location and copy it to the backup location
dataset.writexml(path1)
copyfile(path1,path)
if you have a better way of doing it please dont hesitate to share it..
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Dec 24, 2011
I'm trying to make the classic Snake game in VB.NET, but if I hold a key (any key) during the game, after a few seconds the game freezes until I release the key. I've tried lots to fix this, but nothing works, maybe because I don't understand the problem.I'm assuming that when I hold down a key, the Form1_KeyDown function gets called, and when, after a few seconds, the key goes into "I'm being held down" mode, that function is constantly called, so the timers don't get a chance to update. But like I said, I'm probably wrong.
I've been struggling with this for a while. I think this is all the necessary code, please let me know if it isn't.
[Code]...
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May 3, 2010
I have a bit of a problem. I am using an Access database to hold data for my VB app. In the VB app, I have a data source thats pulling data from the database.
I modified the database today, deleted some tables, added another one, but the data source in the project window does not show these updated changes. I had to reconfigure the datasource with the wizard to get the changes to update.
Is there a way that i can get the data source to update itself when the form loads?
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Oct 13, 2011
I'm not sure if this is a simple problem or not but it's frustrating me to no end.
I'm using the following code to add my data to the database, and then this to refresh. [code]...
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Apr 5, 2010
I've never come across this before:I have a series of text boxes. The text of these boxes get set on page load. then I have a submit button that calls a sub to update the table with the new values (text) in the text box. The problem is it is keeping the original text not the text that is CURRENTLY in the textbox. Anyone come across this before? Or know how to get round it?
[Code]...
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Apr 5, 2010
connect my vb.net application to a remote sql server database, so every one who installs the application would be able to connect to the same remote database. the application would obviously require the internet to run.i also want the option to add more databases in the future, preferably one for each business who would use my software.i am wondering the best way to set up this server that could hold multiple databases. i would think i have two options:
1) set up the server myself on a dedicated computer
2) pay for some type of service that host sql server dataases
so how would i go about executing these options? i dont know the first thing. which option is better?i do however know how to connect to a remote database so thats not what i am asking.
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Feb 3, 2011
what control can hold an html page? vb.net2003 windows app
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Aug 10, 2011
I want to store the contents of an XMl file into an array but struggling to work this out. I have managed to read the data in and store in labels as a test. I then created an array list and used a message box to display the data to see that it has been stored. It does but I am not sure how to group this data. There are 3 records in the file. the idea is to end up with the following:
[Code]...
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