C#获取DataTable对象状态DataRowState

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            //创建一个DataTable
            DataTable dtDemo = GetDataTable();
            DataRow myDr;

            //Detached row:该行已经被创建，但不属于任何DataRowCollection
            myDr = dtDemo.NewRow();
            Console.WriteLine("New Row状态:"+myDr.RowState);
            //将新创建的行添加到DataTable中
            dtDemo.Rows.Add(myDr);
            Console.WriteLine("Add Row状态:"+myDr.RowState);

            #region Add之后直接使用Delete，RowState变为Detached,  行数-1
            //myDr.Delete();
            //Console.WriteLine("myDr的状态：" + myDr.RowState);
            //Console.WriteLine("dtDemo的行数:" + dtDemo.Rows.Count.ToString());
            #endregion

            dtDemo.AcceptChanges();
            Console.WriteLine("AcceptChanges状态:" + myDr.RowState);
            //修改
            myDr["Name"] = "Tom";
            Console.WriteLine("Modified状态:" + myDr.RowState);
            Console.WriteLine("删除前的行数:" + dtDemo.Rows.Count.ToString());

            #region 非Added状态下使用Delete，RowState变为Deleted,  行数不变
            myDr.Delete();
            Console.WriteLine("Deleted状态:" + myDr.RowState);
            Console.WriteLine("删除后的行数:" + dtDemo.Rows.Count.ToString());
            #endregion

            //这时myDr的状态变为Detached
            Console.WriteLine("myDr的状态：" + myDr.RowState);
            //重新加入myDr，这时状态变为Added
            dtDemo.Rows.Add(myDr);
            Console.WriteLine("myDr的状态：" + myDr.RowState);
            //取消删除行
            //dtDemo.RejectChanges();
            Console.ReadKey();
        }

        /// <summary>
        /// 创建一个空的DataTable
        /// </summary>
        /// <returns></returns>
        static DataTable GetDataTable()
        {
            DataTable dt = new DataTable("MyTable");
            DataColumn dc = new DataColumn("Name", typeof(string));
            dt.Columns.Add(dc);
            return dt;
        }
    }
}