Question

我正在尝试使用azure移动服务开发适用于Windows手机的应用。我正在使用azure portal提供的身份验证服务。身份验证后，用户需要输入一些数据，如他的姓名，电子邮件ID等。另外，我限制一个用户使用插入脚本只使用一行。我正在使用多个页面进行输入。

myTable的

public class myTabble
    {
        public string Id { get; set; }

        [JsonProperty(PropertyName = "name")]
        public string name { get; set; }

        [JsonProperty(PropertyName = "age")]
        public int age { get; set; }

        [JsonProperty(PropertyName = "fname")]
        public string fname { get; set; }

        [JsonProperty(PropertyName = "street")]
        public string street { get; set; }

        [JsonProperty(PropertyName = "college")]
        public string college { get; set; }
    }

我的更新第二页按钮上的功能

 private async void UpdateCheckedTodoItem(myTabble item)
        {

            await todoTable.UpdateAsync(item);

        }
        private async void myFunction()
        {
            var names = await todoTable
                     .Select(t => t.Id)
                          .ToEnumerableAsync();
            var myName = names.FirstOrDefault();
            string a = myName;


            var item = await todoTable
                .Where(todoItem => todoItem.Id == a)
                .ToCollectionAsync();

            item.street = street.Text; //error
            item.colege = colege.Text; //error



        }

        private void save_Click(object sender, RoutedEventArgs e)
        {


            try
            {

                myFunction();

            }
            catch
            {
                MessageBox.Show("Invalid input");
            }

        }

我收到此错误

Microsoft.WindowsAzure.MobileServices.MobileServiceCollection<Test.myTabble,Test.myTabble>' does not contain a definition for 'hobby' and no extension method 'hobby' accepting a first argument of type 'Microsoft.WindowsAzure.MobileServices.MobileServiceCollection<Test.myTabble,Test.myTabble>' could be found (are you missing a using directive or an assembly reference?

Answer 1

var items = await todoTable
                .Where(todoItem => todoItem.Id == a)
                .ToCollectionAsync();

var item = items.FirstOrDefault();
if(item != null)
{
    item.street = street.Text; //
    item.colege = colege.Text; //
    await todoTable.UpdateAsync(item);
}

我几乎忘记了API，我不记得是否有任何要求获得的API，在这种情况下，您不必执行ToCollectionAsync()，这会返回collection。

更新azure移动服务数据表的例外情况

1 个答案: