WP8 KnownContactProperties.Birthdate不能设置值 [英] WP8 KnownContactProperties.Birthdate can not set value

问题描述

var store = await ContactStore.CreateOrOpenAsync();
StoredContact sc = new StoredContact(store);
IDictionary<string, object> values = await sc.GetPropertiesAsync();
values[KnownContactProperties.FamilyName] =  "bbb";
values[KnownContactProperties.GivenName]=  "worerrrrld";

//*************problem here**************
Nullable<DateTime> birth = DateTime.Now;
values[KnownContactProperties.Birthdate] = birth;
//values[KnownContactProperties.Birthdate] = DateTime.Now;
//values[KnownContactProperties.Birthdate] = "2010-05-10";
//it will cause exception by any way above.
//***************************************

await sc.SaveAsync();//Exception throw here  :System.InvalidCastException

phone8 API

About windows phone8 API

Windows.Phone.PersonalInformation 命名空间

对于 StoredContact ！

可以任何身体帮助我太奇怪了！如何设置 KnownContactProperties.Birthdate ？

Can any body help me! How to set this KnownContactProperties.Birthdate?

推荐答案

InvalidCastException是正常的因为预期对象为DateTimeOffset。

The InvalidCastException is normal since the expected object is DateTimeOffset.

请尝试以下操作：

values[KnownContactProperties.Birthdate] = new DateTimeOffset(DateTime.Parse("2010-05-10"));

回答。

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