CommandLine Configuration Extension methods

[maryamariyan]

CommandLineConfigurationProvider

CommandLineConfigurationExtensions

CommandLineConfigurationSource IConfigurationProvider

The values passed on the command line,
AddCommandLine
CommandLineConfigurationSource SwitchMappings

        ///     // dotnet run -k1=value1 -k2 value2 --alt3=value2 /alt4=value3 --alt5 value5 /alt6 value6
        ///     
        ///     using Microsoft.Extensions.Configuration;
        ///     using System;
        ///     using System.Collections.Generic;
        ///     
        ///     namespace CommandLineSample
        ///     {
        ///        public class Program
        ///        {
        ///            public static void Main(string[] args)
        ///            {
        ///                var switchMappings = new Dictionary<string, string>()
        ///                {
        ///                    { "-k1", "key1" },
        ///                    { "-k2", "key2" },
        ///                    { "--alt3", "key3" },
        ///                    { "--alt4", "key4" },
        ///                    { "--alt5", "key5" },
        ///                    { "--alt6", "key6" },
        ///                };
        ///                var builder = new ConfigurationBuilder();
        ///                builder.AddCommandLine(args, switchMappings);
        ///     
        ///                var config = builder.Build();
        ///     
        ///                Console.WriteLine($"Key1: '{config["Key1"]}'");
        ///                Console.WriteLine($"Key2: '{config["Key2"]}'");
        ///                Console.WriteLine($"Key3: '{config["Key3"]}'");
        ///                Console.WriteLine($"Key4: '{config["Key4"]}'");
        ///                Console.WriteLine($"Key5: '{config["Key5"]}'");
        ///                Console.WriteLine($"Key6: '{config["Key6"]}'");
        ///            }
        ///        }
        ///     }

reads configuration values from the command line.

The switch mappings. A dictionary of short (with prefix "-") and alias keys (with prefix "--"), mapped to the configuration key (no prefix).

dotnet run key1=value1 --key2=value2 /key3=value3 --key4 value4 /key5 value5
        ///     using Microsoft.Extensions.Configuration;
        ///     using System;
        ///     
        ///     namespace CommandLineSample
        ///     {
        ///        public class Program
        ///        {
        ///            public static void Main(string[] args)
        ///            {
        ///                var builder = new ConfigurationBuilder();
        ///                builder.AddCommandLine(args);
        ///     
        ///                var config = builder.Build();
        ///     
        ///                Console.WriteLine($"Key1: '{config["Key1"]}'");
        ///                Console.WriteLine($"Key2: '{config["Key2"]}'");
        ///                Console.WriteLine($"Key3: '{config["Key3"]}'");
        ///                Console.WriteLine($"Key4: '{config["Key4"]}'");
        ///                Console.WriteLine($"Key5: '{config["Key5"]}'");
        ///            }
        ///        }
        ///     }