basebl.cs

网上鲜花销售系统 内有源码和需求分析

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Text;
using System.IO;
using System.Text.RegularExpressions;


namespace DingHaokai.BussinessLogic
{
	/// <summary>
	/// BaseBL为BL层的基类，所有由WEB层调用的BL层都继承这个类
	/// </summary>
	public class BaseBL
	{
		private string errorMsg;

		public BaseBL()
		{
			
		}
	
		/// <summary>
		/// 清除指定数据表及关联表中所有数据
		/// </summary>
		/// <param name="tb">指定的数据表对象</param>
		public void ClearData(DataTable tb)
		{
			foreach (DataRelation r in tb.DataSet.Relations)
			{
				if (r.ParentTable == tb && r.ChildTable.Rows.Count>0)
					ClearData(r.ChildTable);
			}
			tb.Clear();
		}

		/// <summary>
		/// 接受数据集中所有表的删除行操作
		/// </summary>
		public void AcceptDeletedRows(DataSet ds)
		{
			foreach(DataTable tb in ds.Tables)
			{
				AcceptDeletedRows(tb);
			}
		}

		/// <summary>
		/// 接受数据表中所有删除行操作
		/// </summary>
		public void AcceptDeletedRows(DataTable tb)
		{
			AcceptChangedRows(tb.Select("", "", DataViewRowState.Deleted));
		}

		/// <summary>
		/// 接受数据行数组中所有数据行的改变
		/// </summary>
		/// <param name="rows"></param>
		public void AcceptChangedRows(DataRow[] rows)
		{
			foreach(DataRow row in rows)
			{
				row.AcceptChanges();
			}
		}

		
		/// <summary>
		/// 获取或者设置单条错误信息
		/// </summary>
		public string ErrorMessage
		{
			get { return errorMsg; }
			set { errorMsg = value; }
		}

		

		
	}
}