Prompts In Microsoft Bot Framework

using Karan_EchoBot.Models; 
using Microsoft.Bot.Builder; 
using Microsoft.Bot.Builder.Dialogs; 
using Microsoft.Bot.Builder.Dialogs.Choices; 
using System.Collections.Generic; 
using System.Threading; 
using System.Threading.Tasks; 
  
namespace Karan_EchoBot.Dialogs { 
    //C# we need to make it as Dialog 
    public class RootDialog: ComponentDialog { 
        private IStatePropertyAccessor < UserData > _userData; 
        public RootDialog(UserState userState, ConversationState conversationState): base(nameof(RootDialog)) { 
  
            _userData = userState.CreateProperty < UserData > ("UserData"); 
  
            var steps = new WaterfallStep[] { 
  
                AskUserNameAsync, 
                AskOfficeTypeAsync, 
                AskPhoneNumberAsync, 
                AskUserConfirmationAsync, 
            }; 
  
            AddDialog(new WaterfallDialog("UserDetailsWaterfall", steps)); 
            AddDialog(new TextPrompt("AskUserNamePrompt", null)); 
            AddDialog(new ChoicePrompt("AskTypeOfAdressPrompt")); 
            AddDialog(new ConfirmPrompt("ConfirmUserDetialsPrompt")); 
            AddDialog(new NumberPrompt < long > ("AskPhoneNumberPrompt", ValidatePhoneNumberAsync)); 
        } 
  
        private async Task < DialogTurnResult > AskUserNameAsync(WaterfallStepContext stepContext, CancellationToken cancellationToken) { 
            return await stepContext.PromptAsync("AskUserNamePrompt", new PromptOptions { 
                Prompt = MessageFactory.Text("What's your Name?"), RetryPrompt = MessageFactory.Text("Can I know your name?") 
            }, cancellationToken); 
        } 
  
        private async Task < bool > ValidatePhoneNumberAsync(PromptValidatorContext < long > promptContext, CancellationToken cancellationToken) { 
            long phoneNumber; 
  
            long.TryParse(promptContext.Recognized.Value.ToString(), out phoneNumber); 
  
            if (phoneNumber.ToString().Length == 10) { 
                return await Task.FromResult(true); 
            } else { 
                return await Task.FromResult(false); 
            } 
        } 
  
        private async Task < DialogTurnResult > AskPhoneNumberAsync(WaterfallStepContext stepContext, CancellationToken cancellationToken) { 
            var userData = await _userData.GetAsync(stepContext.Context, () => new UserData(), cancellationToken); 
  
            //setting the Address. 
            userData.Address = stepContext.Context.Activity.Text; 
  
            await _userData.SetAsync(stepContext.Context, userData, cancellationToken); 
  
            return await stepContext.PromptAsync("AskPhoneNumberPrompt", new PromptOptions { 
                Prompt = MessageFactory.Text("What is your phone number?"), RetryPrompt = MessageFactory.Text("Incorrect Phone Number! Please provide your valid number..") 
            }, cancellationToken); 
        } 
  
        private async Task < DialogTurnResult > AskUserConfirmationAsync(WaterfallStepContext stepContext, CancellationToken cancellationToken) { 
            //you need to save all answers using bot state and summarize the user information in the confirm state and show information in confirmStatement using C# string interpolation. 
            var confirmStatement = $ ""; 
  
            return await stepContext.PromptAsync("ConfirmUserDetialsPrompt", new PromptOptions { 
                Prompt = MessageFactory.Text(confirmStatement) 
            }, cancellationToken); 
        } 
  
        private async Task < DialogTurnResult > AskOfficeTypeAsync(WaterfallStepContext stepContext, CancellationToken cancellationToken) { 
            var officeTypes = new List < Choice > (); 
  
            officeTypes.Add(new Choice() { 
  
                Value = "Home", 
  
            }); 
  
            officeTypes.Add(new Choice() { 
                Value = "Office", 
            }); 
  
            return await stepContext.PromptAsync("AskTypeOfAdressPrompt", new PromptOptions { 
                Prompt = MessageFactory.Text("Ok, What type of address is this?"), RetryPrompt = MessageFactory.Text("Sorry, Which type of address is this?"), Choices = officeTypes 
            }, cancellationToken); 
        } 
    } 
} 

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