class.cs

《精通ASP.NET2.0网络应用系统开发》书中的源码

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using SQLHelper;

namespace StudentManager
{
	/// <summary>
	/// Summary description for Class
	/// </summary>
	public class Class
	{
		public SqlDataReader GetClasss()
		{
			///定义类SQLHelper
			SQLHelper.SQLHelper sqlHelper = new SQLHelper.SQLHelper();

			///定义保存从数据库获取的结果的DataReader
			SqlDataReader dr = null;

			try
			{
				///执行存储过程
				sqlHelper.RunProc("Pr_GetClasss",out dr);
			}
			catch (Exception ex)
			{
				///抛出执行数据库异常
				SystemError.CreateErrorLog(ex.Message);
				throw new Exception(ex.Message,ex);
			}

			///返回从数据库获取的结果
			return (dr);
		}

		public SqlDataReader GetClassByGrade(int nGradeID)
		{
			///定义类SQLHelper
			SQLHelper.SQLHelper sqlHelper = new SQLHelper.SQLHelper();

			///定义保存从数据库获取的结果的DataReader
			SqlDataReader dr = null;

			///创建访问数据库的参数			
			SqlParameter[] paramList = {
				sqlHelper.CreateInParam("@GradeID",SqlDbType.Int,4,nGradeID)
			};

			try
			{
				///执行存储过程
				sqlHelper.RunProc("Pr_GetClassByGrade", paramList, out dr);
			}
			catch (Exception ex)
			{
				///抛出执行数据库异常
				SystemError.CreateErrorLog(ex.Message);
				throw new Exception(ex.Message, ex);
			}

			///返回从数据库获取的结果
			return (dr);
		}


		public SqlDataReader GetSingleClass(int nClassID)
		{
			///定义类SQLHelper
			SQLHelper.SQLHelper sqlHelper = new SQLHelper.SQLHelper();

			///定义保存从数据库获取的结果的DataReader
			SqlDataReader dr = null;

			///创建访问数据库的参数			
			SqlParameter[] paramList = {
				sqlHelper.CreateInParam("@ClassID",SqlDbType.Int,4,nClassID)
			};

			try
			{
				///执行存储过程
				sqlHelper.RunProc("Pr_GetSingleClass",paramList,out dr);
			}
			catch (Exception ex)
			{
				///抛出执行数据库异常
				SystemError.CreateErrorLog(ex.Message);
				throw new Exception(ex.Message,ex);
			}

			///返回从数据库获取的结果
			return (dr);
		}

		public int AddClass(string sDesn,int nGradeID,int nTeacherID,DateTime dStartDate,
			DateTime dEndDate,int nStuNum)
		{
			///定义类SQLHelper
			SQLHelper.SQLHelper sqlHelper = new SQLHelper.SQLHelper();

			///创建访问数据库的参数			
			SqlParameter[] paramList = {
				sqlHelper.CreateInParam("@Desn",SqlDbType.VarChar,200,sDesn),										  
				sqlHelper.CreateInParam("@GradeID",SqlDbType.Int,4,nGradeID),
				sqlHelper.CreateInParam("@TeacherID",SqlDbType.Int,4,nTeacherID),
				sqlHelper.CreateInParam("@StartDate",SqlDbType.DateTime,8,dStartDate),
				sqlHelper.CreateInParam("@EndDate",SqlDbType.DateTime,8,dEndDate),
				sqlHelper.CreateInParam("@StuNum",SqlDbType.Int,4,nStuNum)
			};

			try
			{
				///执行存储过程
				return (sqlHelper.RunProc("Pr_AddClass",paramList));
			}
			catch (Exception ex)
			{
				///抛出执行数据库异常
				SystemError.CreateErrorLog(ex.Message);
				throw new Exception(ex.Message,ex);
			}
		}

		public void UpdateClass(int nClassID,string sDesn,int nGradeID,int nTeacherID,
			DateTime dStartDate,DateTime dEndDate,int nStuNum)
		{
			///定义类SQLHelper
			SQLHelper.SQLHelper sqlHelper = new SQLHelper.SQLHelper();

			///创建访问数据库的参数			
			SqlParameter[] paramList = {
				sqlHelper.CreateInParam("@ClassID",SqlDbType.Int,4,nClassID),
                sqlHelper.CreateInParam("@Desn",SqlDbType.VarChar,200,sDesn),										  
				sqlHelper.CreateInParam("@GradeID",SqlDbType.Int,4,nGradeID),
				sqlHelper.CreateInParam("@TeacherID",SqlDbType.Int,4,nTeacherID),
				sqlHelper.CreateInParam("@StartDate",SqlDbType.DateTime,8,dStartDate),
				sqlHelper.CreateInParam("@EndDate",SqlDbType.DateTime,8,dEndDate),
				sqlHelper.CreateInParam("@StuNum",SqlDbType.Int,4,nStuNum)
			};

			try
			{
				///执行存储过程
				sqlHelper.RunProc("Pr_UpdateClass",paramList);
			}
			catch (Exception ex)
			{
				///抛出执行数据库异常
				SystemError.CreateErrorLog(ex.Message);
				throw new Exception(ex.Message,ex);
			}
		}

		public void DeleteClass(int nClassID)
		{
			///定义类SQLHelper
			SQLHelper.SQLHelper sqlHelper = new SQLHelper.SQLHelper();

			///创建访问数据库的参数			
			SqlParameter[] paramList = {
										   sqlHelper.CreateInParam("@ClassID",SqlDbType.Int,4,nClassID)
									   };

			try
			{
				///执行存储过程
				sqlHelper.RunProc("Pr_DeleteClass",paramList);
			}
			catch (Exception ex)
			{
				///抛出执行数据库异常
				SystemError.CreateErrorLog(ex.Message);
				throw new Exception(ex.Message,ex);
			}
		}
	}
}