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[英]Custom message for enum options in formflow - C# Bot Framework
[英]Customize validation message in Bot framework C#
如何在Bot框架表單流中自定義驗證消息? 下面是我正在工作的示例代碼,如果用戶鍵入除提供的選項以外的任何其他文本,我需要返回給他們選擇列表,指出所選的選項不正確。
[Prompt("Please choose # category... {||}", ChoiceStyle = ChoiceStyleOptions.Buttons)]
public string Category;
[Prompt("Please choose # sub category... {||}", ChoiceStyle = ChoiceStyleOptions.Buttons)]
public string Subcategory;
[Prompt("We need some more details to create the request, provide me your **contact number**...")]
[Pattern(Validations.Phone)]
public string ContactNumber;
[Prompt("Please provide **Attachement** if you don't have attachemnt please enter ? {||}")]
public ChoiceOptions? Attachment;
當前,如果該選項不在列表中,它只會引發一條消息,例如
'用戶輸入不是聯系人/附件/類別選項'
Jobin,您想看看formFlow的更高級的功能。 您可以使用字段驗證功能在字段周圍創建業務邏輯。 這是從MS Online文檔中獲取的樣本。 您可以在此處看到完整的示例和文檔,我發現這種創建表單的方法比使用屬性要靈活得多。
public static IForm<SandwichOrder> BuildForm()
{
...
return new FormBuilder<SandwichOrder>()
.Message("Welcome to the sandwich order bot!")
.Field(nameof(Sandwich))
.Field(nameof(Bread))
.Field(nameof(Toppings),
validate: async (state, value) =>
{
var values = ((List<object>)value).OfType<ToppingOptions>();
var result = new ValidateResult { IsValid = true, Value = values };
if (values != null && values.Contains(ToppingOptions.Everything))
{
result.Value = (from ToppingOptions topping in Enum.GetValues(typeof(ToppingOptions))
where topping != ToppingOptions.Everything && !values.Contains(topping)
select topping).ToList();
}
return result;
})
.Message("For sandwich toppings you have selected {Toppings}.")
...
.Build();
}
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