摘要:DataList與Lightbox結合秀圖．(下)
此篇主要是針對imgHandler.ashx的部分
imgHandler.ashx 設定顯示的圖檔依等比例縮放
001 
<%@ WebHandler Language="C#" Class="imgHandler" %>
002
003
<%@ WebHandler Language="C#" Class="imgHandler" %>
004
005using System;
006using System.Data;
007using System.Configuration;
008using System.Collections;
009using System.Web;
010using System.Web.Security;
011using System.Web.UI;
012using System.Web.UI.WebControls;
013using System.Web.UI.WebControls.WebParts;
014using System.Web.UI.HtmlControls;
015using System.IO;
016using System.Data.SqlClient;
017
using System.Drawing;
018
019public class imgHandler : IHttpHandler
020{
021
022 public void ProcessRequest(HttpContext context)
023
{
024 //指定圖片輸出格式
025 context.Response.ContentType = "image/jpeg";
026
027
讀取資料庫
052
053 //宣告一個 Byte 做資料處理用途
054 byte[] bytes = null;
055
056 try
057 {
058 if (ds.Tables[0].Rows.Count > 0)
059 {
060
061 bytes = (byte[])ds.Tables[0].Rows[0][1];
062
063 設定顯示的圖檔依等比例縮放
091
}
092
093 }
094 catch (Exception ex)
095 {
096 throw ex;
097 }
098
099 }
100
101 public bool IsReusable
102 {
103 get
104 {
105 return false;
106 }
107 }
108
109}
110
111
<%@ WebHandler Language="C#" Class="imgHandler" %>002
003
<%@ WebHandler Language="C#" Class="imgHandler" %>
<%@ WebHandler Language="C#" Class="imgHandler" %>004
005
using System;006
using System.Data;007
using System.Configuration;008
using System.Collections;009
using System.Web;010
using System.Web.Security;011
using System.Web.UI;012
using System.Web.UI.WebControls;013
using System.Web.UI.WebControls.WebParts;014
using System.Web.UI.HtmlControls;015
using System.IO;016
using System.Data.SqlClient;017
using System.Drawing;018
019
public class imgHandler : IHttpHandler 020
{021
022 public void ProcessRequest(HttpContext context)
023
{024
//指定圖片輸出格式025
context.Response.ContentType = "image/jpeg";026
027
讀取資料庫052
053 //宣告一個 Byte 做資料處理用途
054
byte[] bytes = null;055
056 try
057
{058
if (ds.Tables[0].Rows.Count > 0)059
{060
061 bytes = (byte[])ds.Tables[0].Rows[0][1];
062
063
設定顯示的圖檔依等比例縮放091
}092
093
}094
catch (Exception ex)095
{096
throw ex;097
}098
099
}100
101
public bool IsReusable 102
{103
get 104
{105
return false;106
}107
}108
109
}110
111
imgHandlerO.ashx 設定顯示的圖檔原始大小
01 <%@ WebHandler Language="C#" Class="imgHandler" %>
02
03<%@ WebHandler Language="C#" Class="imgHandler" %>
04
05using System;
06using System.Data;
07using System.Configuration;
08using System.Collections;
09using System.Web;
10using System.Web.Security;
11using System.Web.UI;
12using System.Web.UI.WebControls;
13using System.Web.UI.WebControls.WebParts;
14using System.Web.UI.HtmlControls;
15using System.IO;
16using System.Data.SqlClient;
17using System.Drawing;
18
19public class imgHandler : IHttpHandler
20{
21
22 public void ProcessRequest(HttpContext context)
23 {
24 //指定圖片輸出格式
25 context.Response.ContentType = "image/jpeg";
26
27 讀取資料庫
52
53 //宣告一個 Byte 做資料處理用途
54 byte[] bytes = null;
55
56 try
57 {
58 if (ds.Tables[0].Rows.Count > 0)
59 {
60
61 bytes = (byte[])ds.Tables[0].Rows[0][1];
62
63 設定顯示的圖檔原始大小
78 }
79
80
81 }
82 catch (Exception ex)
83 {
84 throw ex;
85 }
86
87 }
88
89 public bool IsReusable
90 {
91 get
92 {
93 return false;
94 }
95 }
96
97}
98
99
<%@ WebHandler Language="C#" Class="imgHandler" %>02
03
<%@ WebHandler Language="C#" Class="imgHandler" %>04
05
using System;06
using System.Data;07
using System.Configuration;08
using System.Collections;09
using System.Web;10
using System.Web.Security;11
using System.Web.UI;12
using System.Web.UI.WebControls;13
using System.Web.UI.WebControls.WebParts;14
using System.Web.UI.HtmlControls;15
using System.IO;16
using System.Data.SqlClient;17
using System.Drawing;18
19
public class imgHandler : IHttpHandler 20
{21
22 public void ProcessRequest(HttpContext context)
23
{24
//指定圖片輸出格式25
context.Response.ContentType = "image/jpeg";26
27
讀取資料庫52
53 //宣告一個 Byte 做資料處理用途
54
byte[] bytes = null;55
56 try
57
{58
if (ds.Tables[0].Rows.Count > 0)59
{60
61 bytes = (byte[])ds.Tables[0].Rows[0][1];
62
63
設定顯示的圖檔原始大小78
}79
80
81
}82
catch (Exception ex)83
{84
throw ex;85
}86
87
}88
89
public bool IsReusable 90
{91
get 92
{93
return false;94
}95
}96
97
}98
99
不知為啥第1、3行會重覆出現 @@"