Я использую приведенный ниже код:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using AdaptiveCards;
using CoreBot;
using CoreBot.Dialogs;
using Microsoft.Bot.Builder;
using Microsoft.Bot.Builder.Dialogs;
using Microsoft.Bot.Builder.Dialogs.Choices;
using Microsoft.Bot.Schema;
using Microsoft.Recognizers.Text.DataTypes.TimexExpression;
using Newtonsoft.Json.Linq;
namespace Microsoft.BotBuilderSamples.Dialogs
{
public class SharepointDialog : CancelAndHelpDialog
{
private const string DestinationStepMsgText = "Enter the type of document you want to search ";
private const string OriginStepMsgText = "Enter the name of document you want to search";
string documentName = null;
string documentType = null;
public string CHOICEPROMPT { get; private set; }
public object AdaptiveCard { get; private set; }
public SharepointDialog()
: base(nameof(SharepointDialog))
{
AddDialog(new TextPrompt(nameof(TextPrompt)));
AddDialog(new ChoicePrompt(nameof(ChoicePrompt)));
AddDialog(new ConfirmPrompt(nameof(ConfirmPrompt)));
AddDialog(new DateResolverDialog());
AddDialog(new WaterfallDialog(nameof(WaterfallDialog), new WaterfallStep[]
{
DestinationStepAsync,
OriginStepAsync,
ConfirmStepAsync,
FinalStepAsync,
}));
// The initial child Dialog to run.
InitialDialogId = nameof(WaterfallDialog);
}
//private static async Task SendIntroCardAsync(ITurnContext turnContext, CancellationToken cancellationToken)
//{
// var card = new HeroCard();
// card.Title = "Welcome to Bot Framework!";
// card.Text = @"Welcome to Welcome Users bot sample! This Introduction card
// is a great way to introduce your Bot to the user and suggest
// some things to get them started. We use this opportunity to
// recommend a few next steps for learning more creating and deploying bots.";
// card.Images = new List<CardImage>() { new CardImage("https://aka.ms/bf-welcome-card-image") };
// card.Buttons = new List<CardAction>()
// {
// new CardAction(ActionTypes.OpenUrl, "HR Contingent", null, "HR Contingency", "Get an overview", "https://docs.microsoft.com/en-us/azure/bot-service/?view=azure-bot-service-4.0"),
// new CardAction(ActionTypes.OpenUrl, "Management Tools", null, "Management Tools", "Ask a question", "https://stackoverflow.com/questions/tagged/botframework"),
// };
// var response = MessageFactory.Attachment(card.ToAttachment());
// await turnContext.SendActivityAsync(response, cancellationToken);
//}
private async Task<DialogTurnResult> DestinationStepAsync(WaterfallStepContext stepContext, CancellationToken cancellationToken)
{
var docNameDetails = (SharepointDetails)stepContext.Options;
//docNameDetails.DocType = (string)stepContext.Result;
if (docNameDetails.DocType == null)
{
var promptMessage = MessageFactory.Text(DestinationStepMsgText, DestinationStepMsgText, InputHints.ExpectingInput);
var choices = new[] { "One", "Two", "Three" };
return await stepContext.PromptAsync("ShowChoicePrompt", new PromptOptions
{
Style = ListStyle.SuggestedAction,
Prompt = MessageFactory.Text("Please select from choices"),
RetryPrompt = MessageFactory.Text("Sorry, Please the valid choice"),
Choices = ChoiceFactory.ToChoices(choices),
}, cancellationToken);
// return await stepContext.PromptAsync(nameof(ChoicePrompt), new PromptOptions { Prompt = promptMessage }, cancellationToken);
}
return await stepContext.NextAsync(docNameDetails.DocType, cancellationToken);
}
private static async Task SendResCardAsync(ITurnContext turnContext, CancellationToken cancellationToken, List<string> resSpList)
{
var card = new HeroCard();
card.Title = "Sharepoint Result";
card.Text = @"Click on below result";
card.Images = new List<CardImage>() { new CardImage("https://aka.ms/bf-welcome-card-image") };
foreach (var rs in resSpList)
{
string[] subLink = rs.Split('/');
string docTitle = subLink[subLink.Length - 1];
card.Buttons = new List<CardAction>()
{
new CardAction(ActionTypes.OpenUrl, docTitle, null, docTitle, "All",rs),
};
}
var response = MessageFactory.Attachment(card.ToAttachment());
await turnContext.SendActivityAsync(response, cancellationToken);
}
private async Task<DialogTurnResult> OriginStepAsync(WaterfallStepContext stepContext, CancellationToken cancellationToken)
{
var docNameDetails = (SharepointDetails)stepContext.Options;
docNameDetails.DocType = (string)stepContext.Result;
if (docNameDetails.SharepointSearch == null)
{
var promptMessage = MessageFactory.Text(OriginStepMsgText, OriginStepMsgText, InputHints.ExpectingInput);
return await stepContext.PromptAsync(nameof(TextPrompt), new PromptOptions { Prompt = promptMessage }, cancellationToken);
}
return await stepContext.NextAsync(docNameDetails.SharepointSearch, cancellationToken);
}
private async Task<DialogTurnResult> ConfirmStepAsync(WaterfallStepContext stepContext, CancellationToken cancellationToken)
{
var docNameDetails = (SharepointDetails)stepContext.Options;
docNameDetails.SharepointSearch= (string)stepContext.Result;
var messageText = $"Please confirm docName: {docNameDetails.SharepointSearch} and docType: {docNameDetails.DocType} Is this correct?";
var promptMessage = MessageFactory.Text(messageText, messageText, InputHints.ExpectingInput);
documentName = docNameDetails.SharepointSearch;
documentType = docNameDetails.DocType;
return await stepContext.PromptAsync(nameof(ConfirmPrompt), new PromptOptions { Prompt = promptMessage }, cancellationToken);
}
private async Task<DialogTurnResult> FinalStepAsync(WaterfallStepContext stepContext, CancellationToken cancellationToken)
{
List<string> res = new List<string>();
SharepointSearchDialog sharepointservice = new SharepointSearchDialog();
res = await sharepointservice.SharepointSearchEng(documentName, documentType);
SendResCardAsync(stepContext.Context, cancellationToken, res);
if ((bool)stepContext.Result)
{
var bookingDetails = (BookingDetails)stepContext.Options;
return await stepContext.EndDialogAsync(bookingDetails, cancellationToken);
}
return await stepContext.EndDialogAsync(null, cancellationToken);
}
private static bool IsAmbiguous(string timex)
{
var timexProperty = new TimexProperty(timex);
return !timexProperty.Types.Contains(Constants.TimexTypes.Definite);
}
}
}
Я пытаюсь отобразить меню выбора, используя карточку предложения, а затем выбрать docType, но после выбора типа файла, т. Е. Один, затем код завершается с неизвестной ошибкой. ChoicePrompt не не работает в разделе, если (docNameDetails.DocType == null). Вместо One Two и Three я буду использовать тип документа, такой как pdf, xls, docx et c. Сбой кода с исключением нулевой ссылки. Справка.
Примечание: TextPrompt работает, но не работает choicePrompt.
В функции OriginStepAsyn c: docNameDetails.docType создает ссылку на нулевой указатель. 
