Re: How do you create and set environment variables?
From: Ron Clarke (ron.clarke_at_hp.com)
Date: 02/06/04
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Date: Fri, 6 Feb 2004 13:35:50 -0800
Aah, that makes more sense. For some reason it did not occur to me that the
contents of the EnvironmentVariables property might be able to be modified.
That's what I need. Thanks.
-Ron
"Stoitcho Goutsev (100) [C# MVP]" <100@100.com> wrote in message
news:%23ka5GwO7DHA.3024@tk2msftngp13.phx.gbl...
> Hi Ron,
> You cannot change the invironment on already running process.
> The set of envirnoment variables can be only changed upon process
creation.
>
> About the EnvironmentVariables property. The property itself is readonly
> because it returns StringDictionary (collection) and you cannot set a new
> collection. But you can modify (add, delete, change) its content.
> Once you compose the set of environment variables you start the new
process
> using that ProcessStartInfo.
> When the process is up and running no one can change its environment
except
> the process itself.
>
> --
> B\rgds
> 100
>
> "Ron Clarke" <ron.clarke@hp.com> wrote in message
> news:u38U3SO7DHA.1672@TK2MSFTNGP12.phx.gbl...
> > Thanks, but I've already looked there. Unless the documentation is
wrong,
> > you can only get the values, you cannot set them.
> > For example, the ProcessStartInfo.EnvironmentVariables property is
defined
> > this way:
> > public StringDictionary EnvironmentVariables {get;}
> >
> > I could get some variables and modify the dictionary contents, but then
> how
> > do I get them back into the environment if the property does allow a
> "set"?
> > For something that should be so simple, there must be a way to do it!
> >
> > Thanks in advance,
> > Ron
> >
> >
> >
> > "Stoitcho Goutsev (100) [C# MVP]" <100@100.com> wrote in message
> > news:uGqxi6N7DHA.2560@TK2MSFTNGP09.phx.gbl...
> > > Hi Ron,
> > > Take a look at Process and ProcessStartInfo classes. Using
> > ProcessStartInfo
> > > you can set envionment variables.
> > > Each process has its own set of envirnment variables so, you don't
have
> to
> > > remove yours when the process terminates
> > >
> > > --
> > > HTH
> > > B\rgds
> > > 100
> > >
> > > "Ron Clarke" <ron.clarke@hp.com> wrote in message
> > > news:OKObiaN7DHA.2044@TK2MSFTNGP10.phx.gbl...
> > > > I have an application that starts other processes. The app needs to
> > > > create/set a few environment variables when a process starts, let
the
> > > > process run, then remove the environment variables when the process
> > > > terminates. Looking through the C# and .NET docs, I've found how to
> get
> > > > environment variables, but not how to create and set them. I found
the
> > > > EnvironmentPermissions class which grants access, but that's not
> enough.
> > > > Can anyone help me here; the functionality must be out there
> somewhere!
> > > > Thanks.
> > > >
> > > >
> > >
> > >
> >
> >
>
>
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