Modify value in app.config

[Alberto]

I need to modify a value in the app.config file with this code:

System.Configur ation.Configura tion config =
ConfigurationMa nager.OpenExeCo nfiguration(Con figurationUserL evel.None);

string key = "Path";
string value = "New value";
config.AppSetti ngs.Settings.Ad d(key, value);
config.Save(Con figurationSaveM ode.Modified);
ConfigurationMa nager.RefreshSe ction("appSetti ngs");
It doesn't write the file. Could you tell me how to do it?
Thank you

[Michael Nemtsev]

This config is readonly.
But you can use System.Xml namespace to write smth in it

I need to modify a value in the app.config file with this code:

System.Configur ation.Configura tion config =
ConfigurationMa nager.OpenExeCo nfiguration(Con figurationUserL evel.None);

string key = "Path";
string value = "New value";
config.AppSetti ngs.Settings.Ad d(key, value);
config.Save(Con figurationSaveM ode.Modified);
ConfigurationMa nager.RefreshSe ction("appSetti ngs");

--
WBR,
Michael Nemtsev :: blog: http://spaces.msn.com/laflour

"At times one remains faithful to a cause only because its opponents do not
cease to be insipid." (c) Friedrich Nietzsche

[Ignacio Machin \( .NET/ C# MVP \)]

Hi,

You cannot, it;s readonly. I had a link somewhere explaining the reasons
behind this. One is that the changes in it will affect all the users of the
app, not the particular user that did it.

If you need to store changing values you can use the registry or even better
create your own config file and store it in the user ApplicationData folder
: Environment.Spe cialFolder.Appl icationData

See opennetcf.org library for a good implementation of a config like class.

--
--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation
"Alberto" <al*****@nospam .es> wrote in message
news:OW******** ********@TK2MSF TNGP05.phx.gbl. ..

I need to modify a value in the app.config file with this code:

System.Configur ation.Configura tion config =
ConfigurationMa nager.OpenExeCo nfiguration(Con figurationUserL evel.None);

string key = "Path";
string value = "New value";
config.AppSetti ngs.Settings.Ad d(key, value);
config.Save(Con figurationSaveM ode.Modified);
ConfigurationMa nager.RefreshSe ction("appSetti ngs");
It doesn't write the file. Could you tell me how to do it?
Thank you

[Sericinus hunter]

Ignacio Machin ( .NET/ C# MVP ) wrote:

If you need to store changing values you can use the registry or even better
create your own config file and store it in the user ApplicationData folder
: Environment.Spe cialFolder.Appl icationData

Is it the same as Application.Use rAppDataPath?

[Marc Gravell]

Looking at Roeder's Reflector, it is identical for standard apps - however,
for ClickOnce (NetworkDeploye d) apps it looks at
CurrentDomain.G etData("DataDir ectory"); I'm not 100% where this value comes
from, however! (it isn't one of the special cases in Locate(), so something
must be providing it explicitly - presumably "fusion" / ClickOnce).

Marc

[Alan T]

I have the same situation, I have tested the IsReadOnly properties

config.Connecti onStrings.Conne ctionStrings["DBConnecti on"].IsReadOnly

returns false so that is writable.

"Marc Gravell" <ma**********@g mail.comwrote in message
news:eJ******** ******@TK2MSFTN GP04.phx.gbl...

Looking at Roeder's Reflector, it is identical for standard apps -
however, for ClickOnce (NetworkDeploye d) apps it looks at
CurrentDomain.G etData("DataDir ectory"); I'm not 100% where this value
comes from, however! (it isn't one of the special cases in Locate(), so
something must be providing it explicitly - presumably "fusion" /
ClickOnce).

Marc