connecting to sql through app.config file from c#

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Dear Friends

I want to connect with SQL by using config file in C# window form . but i can not use configurationManager. Can u all please suggest me any other way to connect becaue i need sql connection in one place and then want to use it from many place.

thanks

Posted 27-Jan-13 21:38pm

Nand Kishor Upadhyay

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OriginalGriff · Answer 1 · 2013-01-27T21:49:00

Store the connection string in your settings file, or in a datafile in the User Data folder (see here for how to use that: Where should I store my data?[^])

To use the settings file, just open your project in the Solution Explorer, open the "Properties" branch, and double click on "Settings.Settings"
Give a new string a name "DatabaseConnection", set it as "string", "user", and set a sensible default (the connection string to your SQL instance)
and save and close the page.
Then when you want to use it:

C#

string conStr = Properties.Settings.Default.DatabaseConnection;

To save a new value:

C#

Properties.Settings.Default.DatabaseConnection = conStr;
Properties.Settings.Default.Save();