Console Prompts

A .NET library to take user input in a console with exception handling and fluent syntax.

Features

• User input queries with fluent syntax
• Support for strings, IParsable, including numbers, and booleans
• Input restrictions (e.g. numeric range, string length, path to an existing file)
• Invalid input handling
• Hints and styling

Usage

Use the Prompt class to create a query with one of the For methods, add restrictions to the query with fluent syntax and Display the query to the user.

int userAge = Prompt.For<int>("Your age").NoLessThan(1).Display(); const int drinkingAge = 21; if (userAge >= drinkingAge) { Console.WriteLine("You are of drinking age!"); } else { Console.WriteLine("Sorry, you can't have a drink."); }

Advanced Use

Use the Prompter class to customize how prompts and hints are displayed.

Prompter prompter = new Prompter(autoSetupHints: false); // Set up all hints to be displayed prompter.SetHintHandlers(PromptHintHandlers.GetAllHandlers()); // Change format of prompts prompter.PromptFormat = "[{1}] {0} := "; prompter.HintSeparator = " & "; prompter.InvalidInputFormat = "Not accepted: {0}"; // Example prompt float x = prompter .PromptFor<float>("x") .AddTypeHint() .ForceFinite() .OfRange(-1, 1) .NotEqualTo(0) .Display(); Console.WriteLine($"f(x) = 60 + 10 * {x} = {60 + 10 * x}");

See Demo Project on the source repository for a more full tutorial.