相册的简单实现

最新推荐文章于 2025-09-04 19:07:27 发布

转载最新推荐文章于 2025-09-04 19:07:27 发布 · 119 阅读

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原文链接：http://www.cnblogs.com/gwazy/archive/2005/05/12/153650.html

文章标签：

#ui #c# #javascript #ViewUI

using System;

using System.Collections;

using System.ComponentModel;

using System.Data;

using System.Data.SqlClient;

using System.Drawing;

using System.Drawing.Imaging;

using System.Web;

using System.Web.SessionState;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.HtmlControls;

using System.IO;

namespace TipsTricks.Ch4

{

/**//// <summary>

/// Summary description for ShowSmallImage.

/// </summary>

public class ShowSmallImage : System.Web.UI.Page

{

const int MaxLength=150; //最大长度

private void Page_Load(object sender, System.EventArgs e)

{

if (Request.QueryString["filename"] != null)

{

//取得原图

string filename=Request.QueryString["filename"];

Bitmap bmpOld= new Bitmap(Server.MapPath("images/" + filename));

//计算缩小比例

double d1;

if (bmpOld.Height>bmpOld.Width)

d1=(double)(MaxLength/(double)bmpOld.Width);

else

d1=(double)(MaxLength/(double)bmpOld.Height);

//产生缩图

Bitmap bmpThumb= new Bitmap(bmpOld,(int)(bmpOld.Width*d1),(int)(bmpOld.Height*d1));

// 清除缓冲

Response.Clear();

//生成图片

bmpThumb.Save(Response.OutputStream, ImageFormat.Jpeg);

Response.End();

//释放资源

bmpThumb.Dispose();

bmpOld.Dispose();

}

Web Form Designer generated code#region Web Form Designer generated code

override protected void OnInit(EventArgs e)

{

// CODEGEN: This call is required by the ASP.NET Web Form Designer.

InitializeComponent();

base.OnInit(e);

}

/**//// <summary>

/// Required method for Designer support - do not modify

/// the contents of this method with the code editor.

/// </summary>

private void InitializeComponent()

{

this.Load += new System.EventHandler(this.Page_Load);

}

#endregion

}

存为
GetThumbnail.aspx

@ Page language="c#" Codebehind="ListImage.aspx.cs" AutoEventWireup="false" Inherits="TipsTricks.Ch4.ListImage" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >

<HTML>

<HEAD>

<title>ListImage</title>

</HEAD>

<asp:DataList id="DataList1" runat="server" Width="28px" RepeatColumns="2" RepeatDirection="Vertical"

BorderWidth="1px" GridLines="Vertical" CellPadding="3" BackColor="White" BorderStyle="None"

BorderColor="#999999">

</HeaderTemplate>

</SelectedItemTemplate>

<asp:HyperLink id=HyperLink1 Runat="server" NavigateUrl='<%# DataBinder.Eval(Container, "DataItem.filename", "images/{0}") %>' Target="_blank">

<asp:Image id=Image2 runat="server" ImageUrl='<%# "GetThumbnail.aspx?filename=" + Server.UrlEncode(DataBinder.Eval(Container, "DataItem.filename").ToString()) %>' AlternateText='<%

# "文件名称:" + DataBinder.Eval(Container, "DataItem.filename") + "\n文件尺寸:" + DataBinder.Eval(Container, "DataItem.size") + " bytes" %>'>

</asp:Image>

</asp:HyperLink>

<asp:Button id="Button1" onclick="HHH" runat="server" Text="Button"></asp:Button>

</ItemTemplate>

</asp:DataList></P>

</form>

</FONT>

</body>

</HTML>

using System;

using System.Collections;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Web;

using System.Web.SessionState;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.HtmlControls;

using System.IO;

namespace TipsTricks.Ch4

{

/**//// <summary>

/// Summary description for ListImage.

/// </summary>

public class ListImage : System.Web.UI.Page

{

protected System.Web.UI.WebControls.DataList DataList1;

private void Page_Load(object sender, System.EventArgs e)

{

if (!IsPostBack)

{

//获取文件名称

string[] files=Directory.GetFiles(Server.MapPath("images"));

//建立数据表

DataTable dt=new DataTable();

dt.Columns.Add("filename");

dt.Columns.Add("size");

foreach (string s in files)

{

DataRow dr=dt.NewRow();

FileInfo f=new FileInfo(s);

dr["filename"]=f.Name;

dr["size"]=f.Length;

dt.Rows.Add(dr);

}

//绑定显示

this.DataList1.DataSource=dt;

this.DataList1.DataBind();

}

public void HHH(object sender, System.EventArgs e)

{

this.Response.Write("hello");

}

Web Form Designer generated code#region Web Form Designer generated code

override protected void OnInit(EventArgs e)

{

// CODEGEN: This call is required by the ASP.NET Web Form Designer.

InitializeComponent();

base.OnInit(e);

}

/**//// <summary>

/// Required method for Designer support - do not modify

/// the contents of this method with the code editor.

/// </summary>

private void InitializeComponent()

{

this.Load += new System.EventHandler(this.Page_Load);

}

#endregion

}

以上为调用页面...

转载于:https://www.cnblogs.com/gwazy/archive/2005/05/12/153650.html