如何将DataTable转换为IDatareader？

using System;
using System.Data;

public class DataTableReader : IDataReader
{
    private DataTable _table;
    private int _rowIndex;

    public DataTableReader(DataTable table)
    {
        _table = table;
        _rowIndex = -1;
    }

    public void Close()
    {
        _table = null;
    }

    public int Depth
    {
        get { return 0; }
    }

    public DataTable GetSchemaTable()
    {
        return null;
    }

    public bool IsClosed
    {
        get { return _table == null; }
    }

    public bool NextResult()
    {
        return false;
    }

    public bool Read()
    {
        if (_rowIndex >= _table.Rows.Count - 1)
            return false;

        _rowIndex++;
        return true;
    }

    public int RecordsAffected
    {
        get { return 0; }
    }

    public object GetValue(int i)
    {
        return _table.Rows[_rowIndex][i];
    }

    public bool GetBoolean(int i)
    {
        return Convert.ToBoolean(GetValue(i));
    }

    public byte GetByte(int i)
    {
        return Convert.ToByte(GetValue(i));
    }

    public long GetBytes(int i, long fieldOffset, byte[] buffer, int bufferoffset, int length)
    {
        throw new NotImplementedException();
    }

    public char GetChar(int i)
    {
        return Convert.ToChar(GetValue(i));
    }

    public long GetChars(int i, long fieldoffset, char[] buffer, int bufferoffset, int length)
    {
        throw new NotImplementedException();
    }

    public IDataReader GetData(int i)
    {
        throw new NotImplementedException();
    }

    public string GetDataTypeName(int i)
    {
        return _table.Columns[i].DataType.Name;
    }

    public DateTime GetDateTime(int i)
    {
        return Convert.ToDateTime(GetValue(i));
    }

    public decimal GetDecimal(int i)
    {
        return Convert.ToDecimal(GetValue(i));
    }

    public double GetDouble(int i)
    {
        return Convert.ToDouble(GetValue(i));
    }

    public Type GetFieldType(int i)
    {
        return _table.Columns[i].DataType;
    }

    public float GetFloat(int i)
    {
        return Convert.ToSingle(GetValue(i));
    }

    public Guid GetGuid(int i)
    {
        return Guid.Parse(GetValue(i).ToString());
    }

    public short GetInt16(int i)
    {
        return Convert.ToInt16(GetValue(i));
    }

    public int GetInt32(int i)
    {
        return Convert.ToInt32(GetValue(i));
    }

    public long GetInt64(int i)
    {
        return Convert.ToInt64(GetValue(i));
    }

    public string GetName(int i)
    {
        return _table.Columns[i].ColumnName;
    }

    public int GetOrdinal(string name)
    {
        return _table.Columns[name].Ordinal;
    }

    public string GetString(int i)
    {
        return Convert.ToString(GetValue(i));
    }

    public int GetValues(object[] values)
    {
        int count = Math.Min(values.Length, _table.Columns.Count);

        for (int i = 0; i< count; i++)
            values[i] = GetValue(i);

        return count;
    }

    public bool IsDBNull(int i)
    {
        return GetValue(i) == DBNull.Value;
    }

    public object this[string name]
    {
        get { return GetValue(GetOrdinal(name)); }
    }

    public object this[int i]
    {
        get { return GetValue(i); }
    }
}

DataTable table = new DataTable();
// 添加列和数据到DataTable
DataTableReader reader = new DataTableReader(table);