Question

I am using AES encryption and generating a random salt, I am storing this random salt in the database.. Before I store the value to the database I want to append a string to it. I want this string to be placed in config file. How can I store a string in config file and How can I call in to append it with my salt.

Answer 1

Something like

<appSettings>
      <add key="specialstring" value="value to append" />
</appSettings>

and access this by ConfigurationSettingsConfigurationManager.AppSettings["specialstring"] and append

Also you can use
WebConfigurationManager in the same way instead of ConfigurationSettingsConfigurationManager