ASP.NET : Encrypt conncection string section of webconfig

<add name=”ConnString” connectionString=”Data Source=.\SQLEXPRESS; AttachDbFilename=|DataDirectory|MyDatabase.mdf;Integrated Security=True;User Instance=True” />

The easiest way to encrypt the <connectionStrings> section is to use the aspnet_regiis command-line tool.
This tool is located in the following folder:


Executing the following command encrypts the <connectionStrings> section of a Web.Config file
located in a folder with the path c:\Websites\MyWebsite:

aspnet_regiis -pef connectionStrings “c:\Websites\MyWebsite”

The -pef option (Protect Encrypt Filepath) encrypts a particular configuration section located at a particular path.

You can decrypt a section with the -pdf option like this:
aspnet_regiis -pdf connectionStrings “c:\Websites\MyWebsite”

ASP.NET page can read the value of the connection string by using the <%$ ConnectionStrings:ConnString %> expression


About Asif
Hello Friends… I have done my Bachelor of Engineering in Information Technology from Gujarat University. I have 1.7 years experience of web and windows based application development.. My basic idea to start a blog is to store all important link which help me in my application and access to every where. Also this information is help others who want to makes their application powerful. I am interested in .net framework (1.0,2.0,3.0,3.5 and more). This blog contain also many information related to SQL, Custom Controls in Please share your ideas and any query if you have...

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