个人相册管理网站系统

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.OleDb;

using System.Drawing;

using System.IO;

using System.Drawing.Drawing2D;

using System.Drawing.Imaging;

///

namespace DAL

{

public class database

{

private string _strconn = "provider=microsoft.jet.oledb.4.0;data source=" + System.Web.HttpContext.Current.Server.MapPath("~/App_Data/db.mdb");

protected OleDbConnection Connection;

public void open()

{

if (Connection == null)

{

Connection = new OleDbConnection(_strconn);//创建一个连接数据库对象

}

if (Connection.State.Equals(ConnectionState.Closed))//判断连接数据库对象是否打开

{

Connection.Open();//连接数据库

}

}

public void close()

{

if (Connection != null)//连接对象不是处于关闭状态

{

Connection.Close();//关闭连接

}

}

//执行主页、简历、链接等的查询

public string redr(string sql,string datas)

{

open();

string ds = null;

OleDbCommand com = new OleDbCommand(sql, Connection);

OleDbDataReader dr = com.ExecuteReader();

if (dr.Read())

{

ds = (string)dr[datas];

}

close();

return ds;

}

//增加相册

public int InsertPhotoset(string sql)

{

open();

int count = 0;

OleDbCommand cmd = new OleDbCommand(sql, Connection);

count = cmd.ExecuteNonQuery();

close();

return count;

}

//查询相册

public OleDbDataReader getPhotoset_info(string sql)

{

open();

OleDbCommand com = new OleDbCommand(sql, Connection);

OleDbDataReader dr = com.ExecuteReader();

//close();

return dr;

}

//上传相片

public OleDbCommand addPhoto(string sql)

{

open();

OleDbCommand cmd = new OleDbCommand(sql, Connection);

//close();

return cmd;

}

//缩略求新图片的大小

public Size getThumbSize(Size oldImageSize, int targetSize)

{

Size newSize = new Size();

if (oldImageSize.Width > oldImageSize.Height)

{

newSize.Width = targetSize;

newSize.Height = (int)(oldImageSize.Height * ((float)targetSize / (float)oldImageSize.Width));

}

else

{

newSize.Height = targetSize;

newSize.Width = (int)(oldImageSize.Width * ((float)targetSize / (float)oldImageSize.Height));

}

return newSize;

}

//求缩略图

public byte[] getThumb(Size oldImageSize, Size newImageSize, byte[] data)

{

System.Drawing.Image oldImage = System.Drawing.Image.FromStream(new MemoryStream(data));

Bitmap newImage = new Bitmap(newImageSize.Width, newImageSize.Height, PixelFormat.Format24bppRgb);

Graphics canvas = Graphics.FromImage(newImage);

canvas.SmoothingMode = SmoothingMode.AntiAlias;

canvas.InterpolationMode = InterpolationMode.HighQualityBicubic;

canvas.PixelOffsetMode = PixelOffsetMode.HighQuality;

canvas.DrawImage(oldImage, new Rectangle(0, 0, newImageSize.Width, newImageSize.Height));

MemoryStream m = new MemoryStream();

newImage.Save(m, ImageFormat.Jpeg);

byte[] dataThumb = m.GetBuffer();

return dataThumb;

}

//获取相册信息或相册中的相片

public DataSet getPhotoset_infos(string sql)

{

open();

DataSet ds = new DataSet();

OleDbDataAdapter adp = new OleDbDataAdapter(sql, Connection);

adp.Fill(ds);

return ds;

}

//攻取相册里的第一张相片

public OleDbDataReader getfistPhoto(string sql)

{

open();

OleDbCommand cmd = new OleDbCommand(sql, Connection);

OleDbDataReader dr = cmd.ExecuteReader();

return dr;

}

//显示某个相册中的所有相片

public OleDbDataReader getPhoto(string sql)

{

open();

OleDbCommand cmd = new OleDbCommand(sql, Connection);

OleDbDataReader dr = cmd.ExecuteReader();

return dr;

}

//显示照片原图

public DataTable getdetails(string sql)

{

open();

OleDbDataAdapter da = new OleDbDataAdapter(sql, Connection);

DataSet ds = new DataSet();

da.Fill(ds, "details");

return ds.Tables["details"];

}

public DataSet getdetails02(string sql)

{

open();

OleDbDataAdapter da = new OleDbDataAdapter(sql, Connection);

DataSet ds = new DataSet();

da.Fill(ds);

close();

return ds;

}

//更新

public void Update(string sql)

{

open();

OleDbCommand cmd = new OleDbCommand(sql, Connection);

cmd.ExecuteNonQuery();

close();

}

//删除

public void Delete(string sql)

{

open();

OleDbCommand cmd = new OleDbCommand(sql, Connection);

cmd.ExecuteNonQuery();

close();

}

//注册

public int Insert(string sql)

{

open();

OleDbCommand cmd = new OleDbCommand(sql, Connection);

try

{

cmd.ExecuteNonQuery();

return 1;

}

catch

{

return 0;

}

finally

{

close();

}

}

// 　验证登录

public OleDbDataReader redrs(string sql)

{

open();

OleDbCommand cmd = new OleDbCommand(sql, Connection);

OleDbDataReader dr = cmd.ExecuteReader();

return dr;

}

public database()

{

//

// TODO: 在此处添加构造函数逻辑

//

}

}

}

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