## data_csv
# все что добавилось с прошлой работы:

изменения в Xaml.Cs
```
public class JSONDataProvider : LocalDataProvider, IDataProvider
{
    private List<Worker> _WorkerList;

    public JSONDataProvider()
    {
        var serializer = new DataContractJsonSerializer(typeof(Worker[]));
        using (var sr = new StreamReader("./data.json"))
        {
            _WorkerList = ((Worker[])serializer.ReadObject(sr.BaseStream)).ToList();

        }
    }
    public IEnumerable<Worker> getWorker()
    {
        return _WorkerList;
    }
}
private bool sortAsc = true;

```
 private bool sortAsc = true;

 private void RadioButton_Checked(object sender, RoutedEventArgs e)
 {
     sortAsc = (sender as RadioButton).Tag.ToString() == "1";
     Invalidate();
 }
```
изменился еще class 4
```
using System;
using System.Collections.Generic;
using System.Formats.Asn1;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Runtime.Serialization;
using System.Text;
using System.Threading.Tasks;
using CsvHelper;
using WpfApp1;

namespace WpfApp1.model
{
    [DataContract]
    public class Worker
    {
        [DataMember]
        public string name { get; set; }
        [DataMember]
        public string Pos { get; set; }
        [DataMember]
        public int Age { get; set; }
        [DataMember]
        public string Sex { get; set; }

        [DataMember]
        public bool available { get; set; }

        [DataMember(Name = "date")]
        private string? stringdate { get; set; }

        [IgnoreDataMember]
        public DateTime? date
        {
            get
            {
                return stringdate == null ? null : DateTime.Parse(stringdate);
            }
            set
            {
                stringdate = value.ToString();
            }
        }
    }



}

```
![](./img/rab.png)