ACCESS数据库访问组件（三）

using System;
using System.Data;
using System.Data.OleDb;
using System.Collections;

namespace XLang.VideoOnline.Framework.Database.Access
{
 /// <summary>
 /// Summary description for ACCESS_DataTablesCollection.
 /// </summary>
 public class DataTablesCollection
 {
  private Database.Access.DataTable[] _tables;

  private int _count;

  public int Count
  {
   get
   { 
    return _count;
   }
  }

  
  public DataTablesCollection(OleDbConnection connection)
  {
   System.Data.DataTable schemaTable = connection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables,
    new object[] {null, null, null, "TABLE"});

   _count=schemaTable.Rows.Count+1;
   _tables=new Database.Access.DataTable[_count];

   for(int i=0;i<_count-1;i++)
   {
    _tables[i]=new Database.Access.DataTable(schemaTable.Rows[i][2].ToString());
   }
   _tables[_count-1]=new Database.Access.DataTable("temp");
  }

  public Database.Access.DataTable this [int tableIndex]
  {
   get
   {
    return _tables[tableIndex];
    //return this[tableIndex];
   }
   set
   {
    _tables[tableIndex]=value;
    //this[tableIndex]=value;
   }
  }

  public Database.Access.DataTable this [string tableName]
  {
   get
   {
    return this [NameToIndex(tableName)];
    //return this[tableName];
   }
   set
   {
    this [NameToIndex(tableName)]=value;
    //this[tableName]=value;
   }
  }

  private int NameToIndex(string tableName)
  {
   for(int i=0;i<_tables.Length;i++)
   {
    if(_tables[i].Name.ToUpper()==tableName.ToUpper())
     return i;
   }
   return -1;
  }
 }
}