How do I read a specific value from a config file?

[John Galt]

I am trying to read the "ConnectionStri ng" value from my app.exe.config
file, but am not sure of the format to do this.

It is of the form:

<?xml version="1.0" encoding="utf-8"?>
<configuratio n>

<appParams>
<add key="Connection String" value="User
Id=MyID;Passwor d=MyPW;Initial Catalog=MyDB;Se rver=d-sql;" />
</appParams>

etc.

</configuration>

In particular, I am interesting in getting the "Server=d-sql" info.

It seems like is should be something like
System.Configur ation.Configura tionSettings.Ap pSettings("Conn ectionString"),
but that doesn't seem to work.

[John Galt]

The problem is that this is being used by Microsoft's Data Application
Block. I need the connection screen info to display which system the
application is pointing to (Development, Production, etc.)

"Morris" <an*******@disc ussions.microso ft.com> wrote in message
news:CD******** *************** ***********@mic rosoft.com...

Try: appSettings instead of <appParams><?xm l version="1.0" encoding="utf-8" ?><configuratio n><appSettings> <add key="Connection String"
value="YourStri ng"/></appSettings></configuration>
The rest looks good.
Good luck.

[Olivier DALET]

Are you really sure the tag isn't appSettings ?... For appParams isn't part
of standard .net config files:
If you want to use appParams, you've got to declare it inthe xml and then
the way you access it isn't as simple as for appSettings:

1 - sample App.exe.config:
<?xml version="1.0" encoding="utf-8"?>
<configuratio n>
<configSections >
<section name="appParams "
type="System.Co nfiguration.Nam eValueSectionHa ndler,system,
Version=1.0.330 0.0, Culture=neutral , PublicKeyToken= b77a5c561934e08 9,
Custom=null"/>
</configSections>
<appSettings>
<add key="key1" value="value1" />
</appSettings>
<appParams>
<add key="key2" value="value2" />
</appParams>
</configuration>

You'll notice that because appParams isn't standard, you have to declare it
in the configSections part.

2 - Accessing values (in C#) :

using System.Configur ation;
using System.Collecti ons.Specialized ;

// It's easy to retreive value1:
string s1 = ConfigurationSe ttings.AppSetti ngs["key1"]; // s1 contains
"value1".

// A little more tricky for value2:
NameValueCollec tion nvc = ConfigurationSe ttings.GetConfi g("appParams" ) as
NameValueCollec tion;
string s2 = nvc["key2"]; // s2 contains "value2".

Olivier DALET
---------------
"John Galt" <nf*@nospam.com > a écrit dans le message de
news:O1******** ******@TK2MSFTN GP10.phx.gbl...

The problem is that this is being used by Microsoft's Data Application
Block. I need the connection screen info to display which system the
application is pointing to (Development, Production, etc.)

"Morris" <an*******@disc ussions.microso ft.com> wrote in message
news:CD******** *************** ***********@mic rosoft.com...

Try: appSettings instead of <appParams><?xm l version="1.0"

encoding="utf-8" ?><configuratio n><appSettings> <add key="Connection String"
value="YourStri ng"/></appSettings></configuration>

The rest looks good.
Good luck.

[John Galt]

"Olivier DALET" <odalet[foo]@wanadoo.fr> wrote in message
news:eO******** ******@tk2msftn gp13.phx.gbl...

Are you really sure the tag isn't appSettings ?... For appParams isn't part of standard .net config files:
If you want to use appParams, you've got to declare it inthe xml and then
the way you access it isn't as simple as for appSettings:

Yes. This is the format used by the Application Block.

Not sure why it works, but it does.

[Olivier DALET]

What application block are you talking about: I've just downloaded versions
1 and 2 of MS Data Application Block, and I've seen nothing concerning
configuration reading, neither appParams sections...

I've downloaded these blocks at
http://www.microsoft.com/downloads/d...8-2891102590AD
(V1)
and
http://www.microsoft.com/downloads/d...displaylang=en
(V2)

could you tell which block you are using and provide a link to it?

Olivier DALET
---------------
"John Galt" <nf*@nospam.com > a écrit dans le message de
news:%2******** ********@TK2MSF TNGP12.phx.gbl. ..

"Olivier DALET" <odalet[foo]@wanadoo.fr> wrote in message
news:eO******** ******@tk2msftn gp13.phx.gbl...

Are you really sure the tag isn't appSettings ?... For appParams isn't

part

of standard .net config files:
If you want to use appParams, you've got to declare it inthe xml and then the way you access it isn't as simple as for appSettings:

Yes. This is the format used by the Application Block.

Not sure why it works, but it does.