ListNavigator/ListNavigator.cs

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using System;
using System.Collections;
using System.Data;
using Microsoft.VisualBasic;
using Common;

/// <summary>
/// 列表导航
/// </summary>
/// <remarks></remarks>
namespace ListNavigator
{
    public class ListNavigator
    {
        private IList _DataSource;
        private int _Index;
        private int Index
        {
            get
            {
                return _Index;
            }
            set
            {
                _Index = value;
            }
        }
        /// <summary>
        /// 获取或设置要导航的数据源
        /// </summary>
        /// <value></value>
        /// <returns></returns>
        /// <remarks></remarks>
        public IList DataSource
        {
            get
            {
                return _DataSource;
            }
            set
            {
                _DataSource = value;
                if (value == null)
                {
                    Index = 0;
                }
                else
                {
                    if (value.Count == 0)
                    {
                        Index = 0;
                    }
                    else
                    {
                        Index = value.Count - 1;
                    }
                }
            }
        }
        /// <summary>