I am making one windows application in c# in where i added one file as app.config file.I have written some code in that file as
<appSettings>
<add key ="FlagForArchiving" value="true"/>
</appSettings>
In 'program.cs' file i am reading this value as
ConfigurationSettings.AppSettings["FlagForArchiving"].ToString();
On local machine i can retrieve value from config file but whenever i am building that application and running on any other machine then I cant read the value from config file.I am trying to run my application on windows 7.Please help me.Thanks in advance.
app.config is renamed to <MyProgramName>.exe.config when you build. When your program runs it will look for that <MyProgramName>.exe.config file, not app.config.
You need to deploy the renamed file (<MyProgramName>.exe.config) along with your program.
In your case, you need to copy over OBViewer.exe, OBViewer.exe.config, and any other files that OBViewer.exe depends on (e.g. other .dll assemblies in your debug/release directory).
By the way, this renamed file is often commonly referred to as "app.config", even if it doesn't have the same filename.
and the app.config file exists on the other machine?
Before reading check if it exists
The exception you get says whats incorrect: "FileNotFoundException"
EDIT
here is the correct way!
if (File.Exists(AppDomain.CurrentDomain.SetupInformation.ConfigurationFile))
{
MessageBox.Show(ConfigurationSettings.AppSettings["FlagForArchiving"].ToString());
}
Related
just wanted some help in creating a INI file in windows using notepad to declare paths used for files/directories for a C#.NET application in Visual Studio.
Currently the program uses hard-coded paths in the application to location of files (on the network drives) used for input and output. What I want to do is use this INI file to declare these locations for files on my local machine so I can test out the program and then read it by the C#.NET program without modifying the production source code.
How do I go about doing this and how is it used once file is created?
Thanks
maybe you could use App.config:
Try this:
<appSettings>
<add key="parametro_de_lo_que_sea" value="valor_que_sea" />
</appSettings>
In your application you could use AppSettings.Get to get value:
string obtain_value = System.Configuration.ConfigurationManager.AppSettings["parametro_de_lo_que_sea"];
Good luck !!
Previously sorry for my English...
I want to store connection string in app.config
Does my application need app.config file after it have build
I've tried to delete app.config and then ran application from the release folder but no errors appeared, but when from the debug folder i have got one.
So where app.config's keys embed in application?
By default, when you build; the app.config is renamed to <YourAssembly>.exe.config and copied to the output directory.
This is why it works even if you deleted app.config - the old .config is still in the output directory. Try looking in that directory for a .config file.
I'm trying to use application settings with a C#.NET project I am working on. But I can't seem to get it to return anything other then the default values. Through the project properties I've added a single setting, DBConnectionString, and set its value to a connection string I want to use. Its scope is set to "application".
Doing this created a number of files including Settings.settings, Settings.Designer.CS, and app.conifg. From what I understand the two Settings.* files define a custom Settings class that derives from ApplicationSettingsBase. The Settings class then has custom, type safe, properties that can be used to set and retrieve each setting. The app.config file is a XML file that stores the actual settings values.
When I build my project it looks like the app.config file is copied to the target directory as MyApplication.dll.config. My program runs fine and is able to use the default connection string.
Next I tried to edit the MyApplicaiton.dll.config file to change the connection string. I ran my program again, but it continued to use the default value. I noticed that in my Settings.Designer file there is a DefaultSettingValueAttribute with the original default string. I tried removing this attribute, but then when I tried to retrieve the connection string setting it just returned null.
This is the code I'm using to read the connection string.
string conn = Properties.Settings.Default.DbConnectionString
What am I doing wrong? How can I get it to return the value in the settings file and not the default value?
Update:
Sorry I should have mentioned this. I'm actually writing a plug-in for another application through a public API. So my project is a DLL not an EXE.
You cannot read settings from *.dll.config files. If you library needs any special settings you need to put them in your app.config or web.config files.
EDIT: You can include the external config files in the main application or web config file. Look here for details.
This question discusses how to manage configuration files for large projects.
Settings files and .config files are different things (I do not know why VS automatically added a .config when you created a Settings file). But, the settings file is compiled into a class and is referenced like you said. If you decompile the dll with .NET reflector the Settings class will be in there. It is used for holding constant values or external resources. For example: error message strings, icons, or images.
The config file is for settings which can change frequently or between environments (dev, test, prod). For a connection string you should use the <connectionStrings> section of the config file. And the property can be referenced using System.Configuration.ConfigurationManager[ "connectionStringName" ].
However, from your original post it looks like your .dll is going to be used in a larger project (either an .exe of web project). One thing to note is that all projects only use one .config file. And that is the config file for the main project. Websites the web.config file, and exe's use XXX.XXX.XXX.exe.config (as you saw, *.exe.config files are renamed copies of the app.config files). dll's do not have usable config files. All dll's will look at the main project's .config file to retrieve information.
If your connection string is never going to change then by all means use the Settings file. Otherwise, use a config file and let the developer of the main project determine what to populate the connection string with.
I have a class library, which has an app.config and when built it put the app.config along with the dll in the output directory I have chosen.
I don't want it to be name app.config though, if I have another component that has it's own dll, I can see confusion happening.
I've been looking at another project, that does exactly that, but I can't see why it outputs dllname.dll.config and mine always app.config.
Any ideas?
Thx
You probably have set the Copy to output directory setting of the app.config.
BUT: In a class library, an app.config is useless.
Note, that you can only have one config file per application. The configuration is being read (at execution time) from <executing assembly file name> + ".config".
I've developed a windows service application using Visual Studio 2008 / C#.
I have an app.config file in the project. When installed, the app.exe.config file appears beside the executable but it appears not to be reading the values from it when I try to access them through ConfigurationManager.AppSettings.
Has it copied the config file elsewhere or is there some other problem I don't know about?
Thanks in advance,
Martin.
Edit:
The config file name is infact my_exe_file_name.exe.config, it looks like:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="RuntimeFrequency" value="3" />
</appSettings>
</configuration>
and I am trying to read via:
ConfigurationManager.AppSettings["RuntimeFrequency"]
The debug value I continually see is '1' and not '3'. Am I doing something wrong here?
I located the error and it was related to file permissions. After installing the service, my local user account didn't have access to modify the app.exe.config file.
The tool I was using to edit was not informing me it was being denied access to save the file - that's notepad++ if anyone is interested - so I couldn't see that it wasn't saving over the old config file.
Solved now, thanks everyone.
Martin.
When you are in debug mode check and see what settings are in the my_exe_file_name.vshost.exe.config Also make sure you adjust this in the app.config file. Visual studio should update the final config file in your bin/debug folders.
Maybe you are updating the wrong config file. You should double check that using
System.Configuration.ConfigurationManager.OpenExeConfiguration(PATH_TO_CONFIG);
Generally for the Windows Services that I write, i drop the appName.exe.config file into C:\WINDOWS\system32\
Perhaps you have an older version in that directory, which is where your service is getting the value, even though you've updated the config file in your project.
App.config file should be renamed to your_exe_file_name.exe.config and placed near the exe file.
Is it possible that you have more than one instance of the RuntimeFrequency entry defined? The ConfigurationManager reads the file from top to bottom and processes each setting individually. Therefore, the last value of RuntimeFrequency that is defined in the file is the one it will use.
If you want to know for sure if your file is being used, I would simply remove or comment out any definition for RuntimeFrequency (copy/paste errors do happen) and wait to see an application error when ConfigurationManager attempts to reference an entry in AppSettings that does not exist.