file.cs

来自「《精通ASP.NET2.0网络应用系统开发》书中的源码」· CS 代码 · 共 176 行

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 SQLHelper;
using System.Data.SqlClient;

namespace WebFileManage
{
	/// <summary>
	/// Summary description for File
	/// </summary>
	public class File
	{
		public SqlDataReader GetFiles()
		{
			///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_GetFiles", 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 GetSubFiles(int nFileID)
		{
			///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("@FileID",SqlDbType.Int,4,nFileID)
			};

			try
			{
				///执行存储过程
				sqlHelper.RunProc("Pr_GetSubFiles", 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 GetSingleFile(int nFileID)
		{
			///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("@FileID",SqlDbType.Int,4,nFileID)
			};

			try
			{
				///执行存储过程
				sqlHelper.RunProc("Pr_GetSingleFile", 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 AddFile(string sDesn, string sUrl,int nIsDir,int nParentID)
		{
			///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("@Url",SqlDbType.VarChar,200,sUrl),
                sqlHelper.CreateInParam("@IsDir",SqlDbType.Int,4,nIsDir),
                sqlHelper.CreateInParam("@ParentID",SqlDbType.Int,4,nParentID)
            };

			try
			{
				///执行存储过程
				return (sqlHelper.RunProc("Pr_AddFile", 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 UpdateFile(int nFileID, string sDesn)
		{
			///定义类SQLHelper
			SQLHelper.SQLHelper sqlHelper = new SQLHelper.SQLHelper();

			///创建访问数据库的参数			
			SqlParameter[] paramList = {
				sqlHelper.CreateInParam("@FileID",SqlDbType.Int,4,nFileID),
				sqlHelper.CreateInParam("@Desn",SqlDbType.VarChar,200,sDesn)
			};

			try
			{
				///执行存储过程
				sqlHelper.RunProc("Pr_UpdateFile", 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 DeleteFile(int nFileID)
		{
			///定义类SQLHelper
			SQLHelper.SQLHelper sqlHelper = new SQLHelper.SQLHelper();

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

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