Console applications are text based and are run at the Command Prompt. They typically perform simple tasks that need to be scripted such as compiling a file or encrypting a section of a configuration file. They can have arguments passed to them to control their behavior, for example, to compile a source file into a shared library:
csc my.cs /target:library
To encrypt the database connection strings section in a Web.config file, use the following command:
aspnet_regiis –pdf "connectionStrings" "c:\mywebsite\"
The two most common tasks that a console application performs are writing and reading lines. We have already been using the WriteLine method to output. If we didn't want a carriage return at the end of lines, we could have used the Write method.
C# 6 has a handy new feature named string interpolation. This allows us to easily output one or more variables in a nicely formatted manner. A string prefixed with $ can use curly braces...