using System.Data;

namespace learun.database
{
	/// <summary>
	/// 版 本 EasyCode EC管理后台
	/// Copyright (c) 2019-present EC管理有限公司
	/// 创建人：tobin
	/// 日 期：2019.09.05
	/// 描 述：db通用帮助类
	/// </summary>
	public class DBCommonHelper
	{
		/// <summary>
		/// 将IDataReader转换为DataTable
		/// </summary>
		/// <returns>datatable</returns>
		/// <param name="reader">IDataReader</param>
		public static DataTable IDataReaderToDataTable(IDataReader reader)
		{
			using (reader)
			{
				DataTable objDataTable = new DataTable("Table");
				int intFieldCount = reader.FieldCount;
				for (int intCounter = 0; intCounter < intFieldCount; ++intCounter)
				{
					objDataTable.Columns.Add(reader.GetName(intCounter).ToLower(), reader.GetFieldType(intCounter));
				}
				objDataTable.BeginLoadData();
				object[] objValues = new object[intFieldCount];
				while (reader.Read())
				{
					reader.GetValues(objValues);
					objDataTable.LoadDataRow(objValues, true);
				}
				reader.Close();
				reader.Dispose();
				objDataTable.EndLoadData();
				return objDataTable;
			}
		}
	}
}