ConfigurationSettings - what's wrong?

This works:

String connString="localhost\\DBserver; database=db; uid=sa; password=;";
 .....


This doesn't:

in web.config:
<configuration>
  <appSettings>
     <add key="connString" value="localhost\\DBserver; database=db; uid=sa; password=;" /add>
  </appSettings>

in .cs:
using System.Configuration;
  ......
String connString=ConfigurationSettings.AppSettings["connString"];
  ......

Error: "SQL server does not exist or access denied."

So the problem might be because IIS grabs another web.config file.
I find 1 web.config under wwwroot\projectName. Others are under C:\program Files\MS Visual Studio .NET\....
How do I know if the program is reading from another web.config?

Thanks.

samliamAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

keshavapCommented:
Hello,

you have made one small mistake in the configuration file.

<configuration>
  <appSettings>
     <add key="connString" value="localhost\\DBserver; database=db; uid=sa; password=;" /add>
  </appSettings>

Replace the add tag with with & try.
<add key="connString" value="localhost\\DBserver; database=db; uid=sa; password=;" />

cheers!
Keshav.
0
samliamAuthor Commented:
Sorry that was just a type here. I had it right in my code, i.e.e "/>" at the end. didn't work.
0
ptmcompCommented:
Replace "localhost\\DBserver" with "localhost\DBserver"
In the String \\ is an escaped \
0
Cloud Class® Course: Microsoft Azure 2017

Azure has a changed a lot since it was originally introduce by adding new services and features. Do you know everything you need to about Azure? This course will teach you about the Azure App Service, monitoring and application insights, DevOps, and Team Services.

sedmansCommented:
I normallu have connection strings in the following format

Server=localhost\DBserver; database=db; User Id=sa; pwd=;

I am not sure whether or not you need the escaped \ in the config file.
0
samliamAuthor Commented:
it works.
However, if the String is defined in the c# code, one '\' does not work, it has to be '\\', while in web.config, it's the other way around.

explain?
0
ptmcompCommented:
You have two options in string parsing in C#:
Standard is C++ string parsing where escaped characters like <CR> and <LF> are written as \r and \n. If you want to write a backslash then you have to double it.
When you set an "@" in front of the string you switch to VB string parsing where you need to double the quotes place a single quote in the string else the string is terminated.

So you can write either:
String connString=@"localhost\DBserver; database=db; uid=sa; password=;";
or
String connString="localhost\\DBserver; database=db; uid=sa; password=;";

The result is the same. It depends on the string if it's easier to use the VB-style or C++-style. I prefer VB-style for filepaths.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
C#

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.