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Programatically update connectionstring using C#

, 8 Nov 2011
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You can do the same using the configuration-specific parts of the .NET Framework to save some of the hard work:// Get the configuration file.System.Configuration.Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);//Initialize the Connection...

You can do the same using the configuration-specific parts of the .NET Framework to save some of the hard work:

// Get the configuration file.
System.Configuration.Configuration config = 
//Initialize the Connection string builder
SqlConnectionStringBuilder sqlBuilder = new SqlConnectionStringBuilder
   InitialCatalog = "YOUR_DATABASE",
   IntegratedSecurity = true,
   Password = "YOUR_PASSWORD"
// Add the connection string.
config.ConnectionStrings.ConnectionStrings["CONNECTION_NAME"].ConnectionString = 
// Save the configuration file.

It'll achieve the same result provided you have the right permissions, only you don't have to treat the config file as a generic XmlDocument and parse the items to find the correct section.


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

jim lahey
Software Developer (Senior)
United Kingdom United Kingdom
First batch file in 1987
Messed around with the Bullfrog C++ Libraries for Syndicate in 1994
Web Developer since 2000
.net Developer since 2001
MCTS: Microsoft® .NET Framework 2.0 - Web-based Client Development
MCTS: Web Applications Development with Microsoft .NET Framework 4

Comments and Discussions

GeneralMy app.config file <code> <configuration> <configsections... PinmemberPritesh Aryan15-Nov-11 23:33 
GeneralReason for my vote of 2 This gives following error. exePath ... PinmemberMukund Thakker15-Nov-11 0:24 
GeneralSystem.Configuration.Configuration config = System.Configura... PinmemberMukund Thakker15-Nov-11 0:22 
GeneralReason for my vote of 5 excellent alternative..thanks PinmemberB Birajdar8-Nov-11 9:14 

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