picture.cs

来自「MIS系统开发与应用配套的源代码」· CS 代码 · 共 169 行

using System;
using System.Data;
using System.Data.SqlClient;
using SQLHelper;

namespace MisPersonnel.Components
{
	/// <summary>
	/// Picture 的摘要说明。
	/// </summary>
	public class Picture
	{
		public SqlDataReader GetPictures()
		{
			///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_GetPictures",out dr);
			}
			catch(Exception ex)
			{
				///抛出执行数据库异常
				SystemError.SystemLog(ex.Message);
				throw new Exception(ex.Message,ex);
			}			

			///返回从数据库获取的结果
			return(dr);
		}

		public SqlDataReader GetPictureByEmployee(int nEmployeeID)
		{
			///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("@EmployeeID",SqlDbType.Int,4,nEmployeeID)
									   };
			
			try
			{
				///执行存储过程
				sqlHelper.RunProc("Pr_GetPictureByEmployee",paramList,out dr);
			}
			catch(Exception ex)
			{
				///抛出执行数据库异常
				SystemError.SystemLog(ex.Message);
				throw new Exception(ex.Message,ex);
			}			

			///返回从数据库获取的结果
			return(dr);
		}

		public SqlDataReader GetSinglePicture(int nPictureID)
		{
			///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("@PictureID",SqlDbType.Int,4,nPictureID)
									   };
			
			try
			{
				///执行存储过程
				sqlHelper.RunProc("Pr_GetSinglePicture",paramList,out dr);
			}
			catch(Exception ex)
			{
				///抛出执行数据库异常
				SystemError.SystemLog(ex.Message);
				throw new Exception(ex.Message,ex);
			}			

			///返回从数据库获取的结果
			return(dr);
		}

		public int AddPicture(string sPicDesn,byte[] bPicData,string sPicType)
		{
			///定义类SQLHelper
			SQLHelper.SQLHelper sqlHelper = new SQLHelper.SQLHelper();

			///创建访问数据库的参数			
			SqlParameter[] paramList = {
										   sqlHelper.CreateInParam("@PicDesn",SqlDbType.VarChar,200,sPicDesn),
										   sqlHelper.CreateInParam("@PicData",SqlDbType.Image,2147483647,bPicData),
										   sqlHelper.CreateInParam("@PicType",SqlDbType.VarChar,200,sPicType)
									   };
			
			try
			{
				///执行存储过程
				return(sqlHelper.RunProc("Pr_AddPicture",paramList));
			}
			catch(Exception ex)
			{
				///抛出执行数据库异常
				SystemError.SystemLog(ex.Message);
				throw new Exception(ex.Message,ex);
			}			
		}

		public void UpdatePicture(int nPictureID,string sPicDesn,byte[] bPicData,string sPicType)
		{
			///定义类SQLHelper
			SQLHelper.SQLHelper sqlHelper = new SQLHelper.SQLHelper();

			///创建访问数据库的参数			
			SqlParameter[] paramList = {
										   sqlHelper.CreateInParam("@PictureID",SqlDbType.Int,4,nPictureID),
										   sqlHelper.CreateInParam("@PicDesn",SqlDbType.VarChar,200,sPicDesn),
										   sqlHelper.CreateInParam("@PicData",SqlDbType.Image,2147483647,bPicData),
										   sqlHelper.CreateInParam("@PicType",SqlDbType.VarChar,200,sPicType)
									   };
			try
			{
				///执行存储过程
				sqlHelper.RunProc("Pr_UpdatePicture",paramList);
			}
			catch(Exception ex)
			{
				///抛出执行数据库异常
				SystemError.SystemLog(ex.Message);
				throw new Exception(ex.Message,ex);
			}			
		}

		public void DeletePicture(int nPictureID)
		{
			///定义类SQLHelper
			SQLHelper.SQLHelper sqlHelper = new SQLHelper.SQLHelper();

			///创建访问数据库的参数			
			SqlParameter[] paramList = {
										   sqlHelper.CreateInParam("@PictureID",SqlDbType.Int,4,nPictureID)
									   };
			
			try
			{
				///执行存储过程
				sqlHelper.RunProc("Pr_DeletePicture",paramList);
			}
			catch(Exception ex)
			{
				///抛出执行数据库异常
				SystemError.SystemLog(ex.Message);
				throw new Exception(ex.Message,ex);
			}			
		}
	}
}