基本版
根據官方文件的作法，當一個formflow完成後，那個Converstaion就會結束，不管之後再傳給bot什麼文字，Bot都不會有任何反應, 除非一個新的ConverstaionID重新建立
但是，在某些訊息環境，是沒有辦法更新ConverstaionID的. 這時候就需要自訂一個Dialog來處理FormComplete及其他的情形
就像官方文件所提到的Dialog是非常強大的
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| [Serializable]
public class SandwichDialog : IDialog
{
private readonly BuildForm<SandwichOrder> SandwichOrderForm;
internal SandwichDialog(BuildForm<SandwichOrder> SandwichOrderForm)
{
this.SandwichOrderForm = SandwichOrderForm;
}
public async Task StartAsync(IDialogContext context)
{
context.Wait(MessageReceivedAsync);
}
public async Task MessageReceivedAsync(IDialogContext context, IAwaitable<Message> argument)
{
var message = await argument;
var pizzaForm = new FormDialog<SandwichOrder>(new SandwichOrder(), this.SandwichOrderForm, FormOptions.PromptInStart);
context.Call<SandwichOrder>(pizzaForm, FormComplete);
}
private async Task FormComplete(IDialogContext context, IAwaitable<SandwichOrder> result)
{
SandwichOrder order = null;
try
{
order = await result;
}
catch (OperationCanceledException)
{
await context.PostAsync("You canceled the form!");
return;
}
catch (Exception ex)
{
await context.PostAsync(ex.Message);
return;
}
if (order != null)
{
await context.PostAsync(order.ToString());
}
else
{
await context.PostAsync("Form returned empty response!");
}
context.Wait(MessageReceivedAsync);
}
}
|
這個是當pizzaForm完成後，則執行FormComplete.
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| context.Call<T>(pizzaForm, FormComplete);
|
在 FormComplete 裡面，可以取得使用者所輸入的選項，所以後續要處理的動作會寫在此處
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