SQL Server 中图片和文件的存取(C#.NET)
读取文件夹，将文件直接保存到数据库中
前台文件
<!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>-->1<%@PageLanguage="C#"AutoEventWireup="true"CodeFile="main.aspx.cs"Inherits="CommPage_main"%>
2
3<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5<htmlxmlns="http://www.w3.org/1999/xhtml">
6<headrunat="server">
7<title>无标题页</title>
8</head>
9<body>
10<formid="form1"runat="server">
11<div>
12<tablestyle="border:0;width:100%;text-align:right;">
13<tr>
14<tdstyle="height:26px"></td>
15<tdstyle="height:26px"></td>
16<tdstyle="height:26px"><asp:ButtonID="btnSaveToDataBase"runat="server"Height="24px"OnClick="btnSaveToDataBase_Click"Text="图片保存到数据库中"Width="176px"/></td>
17</tr>
18</table>
19</div>
20
21</form>
22</body>
23</html>
24
<!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>-->1usingSystem;
2usingSystem.Data;
3usingSystem.Configuration;
4usingSystem.Collections;
5usingSystem.Web;
6usingSystem.Web.Security;
7usingSystem.Web.UI;
8usingSystem.Web.UI.WebControls;
9usingSystem.Web.UI.WebControls.WebParts;
10usingSystem.Web.UI.HtmlControls;
11
12usingSystem.Data.SqlClient;
13usingSystem.IO;
14usingSystem.Drawing;
15usingSystem.Drawing.Imaging;
16usingSuntownBase;
17
18publicpartialclassCommPage_main:System.Web.UI.Page
19{
20
STSharedST=newSTShared();
21
22protectedvoidPage_Load(objectsender,EventArgse)
23
{
24
25
}
26
27protectedvoidbtnSaveToDataBase_Click(objectsender,EventArgse)
28{
29inti=0;//文件计数
30
31string[]dirs=Directory.GetFiles(@"D:\aaa\images");
32if(dirs.Length!=0)
33{
34try
35{
36//Response.Write("共有"+dirs.Length+"个文件!");
37foreach(stringdirindirs)
38{
39//Response.Write("<p>"+dir);
40//如果文件类型不匹配,则重新循环
41if((dir.ToLower()).IndexOf(".jpg")==-1&&(dir.ToLower()).IndexOf(".gif")==-1)
42{
43continue;
44}
45else
46{
47i++;//文件计数加1
48}
49
50//C:\Inetpub\wwwroot\CadFormula\images\item_12.jpg
51
52//FileInfofi=newFileInfo(openFileDialog1.PostedFile.FileName);
53
54FileInfofi=newFileInfo(dir);
55intimgdatalen=(int)fi.Length;
56byte[]imgdata=newbyte[imgdatalen];
57Streamimgdatastream=fi.OpenRead();
58intn=imgdatastream.Read(imgdata,0,imgdatalen);
59stringConnectionString="server=.;database=image;uid=sa;pwd=admin";
60SqlConnectionconn=newSqlConnection(ConnectionString);
61
62stringsql="insertinto[image](picture)values(@imgdata)";
63
64SqlCommandcmd=newSqlCommand(sql,conn);
65
66SqlParameterparamData=newSqlParameter("@imgdata",SqlDbType.Image);
67paramData.Value=imgdata;
68cmd.Parameters.Add(paramData);
69
70conn.Open();
71cmd.ExecuteNonQuery();
72conn.Close();
73}
74}
75catch(Exceptionerr)
76{
77Response.Write("出现错误:"+err.Message.ToString());
78}
79finally
80{
81if(i==0)
82{
83ST.MessageBox(Page,"没有匹配的文件!","确定");
84}
85else
86{
87ST.MessageBox(Page,"成功上传"+i.ToString()+"个文件!","确定");
88}
89//最后删除此文件夹下的文件
90}
91}
92}
93
}
94
===============================================
下面是读取文件
前台：
<!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>-->1<%@PageLanguage="C#"AutoEventWireup="true"CodeFile="test2.aspx.cs"Inherits="CommPage_test2"%>
2
3<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5<htmlxmlns="http://www.w3.org/1999/xhtml">
6<headrunat="server">
7<title>无标题页</title>
8</head>
9<body>
10<formid="form1"runat="server">
11<div>
12<imgid=ImgSpan1border=0src="testimg/select.jpg"><br>
13<imgid=imgborder=0>
14<br/>
15<inputtype=buttonvalue=顺转90度onclick="document.all.ImgSpan.style.filter='progid:DXImageTransform.Microsoft.BasicImage(Rotation=1)'"id="Button3">
16<inputtype=buttonvalue=顺转180度onclick="document.all.ImgSpan.style.filter='progid:DXImageTransform.Microsoft.BasicImage(Rotation=2)'">
17<inputtype=buttonvalue=逆转90度onclick="document.all.ImgSpan.style.filter='progid:DXImageTransform.Microsoft.BasicImage(Rotation=3)'">
18<inputtype=buttonvalue=恢复角度onclick="document.all.ImgSpan.style.filter='progid:DXImageTransform.Microsoft.BasicImage(Rotation=0)'">
19<br/>
20<br/>
21<br/>
22<asp:ButtonID="Button1"runat="server"OnClick="Button1_Click"Text="图片保存到数据库中"Height="24px"Width="176px"/><br/>
23<br/>
24<asp:ButtonID="Button2"runat="server"OnClick="Button2_Click"Text="显示图片"/><br/>
25<br/>
26<br/>
27</div>
28</form>
29</body>
30</html>
31
32
33<scriptlanguage="javascript"<span
前台文件
<!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>-->1
<%@PageLanguage="C#"AutoEventWireup="true"CodeFile="main.aspx.cs"Inherits="CommPage_main"%>
2
3
<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">4
5
<htmlxmlns="http://www.w3.org/1999/xhtml">6
<headrunat="server">7
<title>无标题页</title>8
</head>9
<body>10
<formid="form1"runat="server">11
<div>12
<tablestyle="border:0;width:100%;text-align:right;">13
<tr>14
<tdstyle="height:26px"></td>15
<tdstyle="height:26px"></td>16
<tdstyle="height:26px"><asp:ButtonID="btnSaveToDataBase"runat="server"Height="24px"OnClick="btnSaveToDataBase_Click"Text="图片保存到数据库中"Width="176px"/></td>17
</tr>18
</table>19
</div>20
21
</form>22
</body>23
</html>24
CS文件
<!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>-->1
usingSystem;2
usingSystem.Data;3
usingSystem.Configuration;4
usingSystem.Collections;5
usingSystem.Web;6
usingSystem.Web.Security;7
usingSystem.Web.UI;8
usingSystem.Web.UI.WebControls;9
usingSystem.Web.UI.WebControls.WebParts;10
usingSystem.Web.UI.HtmlControls;11
12
usingSystem.Data.SqlClient;13
usingSystem.IO;14
usingSystem.Drawing;15
usingSystem.Drawing.Imaging;16
usingSuntownBase;17
18
publicpartialclassCommPage_main:System.Web.UI.Page19
{20
STSharedST=newSTShared();21
22
protectedvoidPage_Load(objectsender,EventArgse)23
{
24
25
}26
27
protectedvoidbtnSaveToDataBase_Click(objectsender,EventArgse)28
{29
inti=0;//文件计数30
31
string[]dirs=Directory.GetFiles(@"D:\aaa\images");32
if(dirs.Length!=0)33
{34
try35
{36
//Response.Write("共有"+dirs.Length+"个文件!");37
foreach(stringdirindirs)38
{39
//Response.Write("<p>"+dir);40
//如果文件类型不匹配,则重新循环41
if((dir.ToLower()).IndexOf(".jpg")==-1&&(dir.ToLower()).IndexOf(".gif")==-1)42
{43
continue;44
}45
else46
{47
i++;//文件计数加148
}49
50
//C:\Inetpub\wwwroot\CadFormula\images\item_12.jpg51
52
//FileInfofi=newFileInfo(openFileDialog1.PostedFile.FileName);53
54
FileInfofi=newFileInfo(dir);55
intimgdatalen=(int)fi.Length;56
byte[]imgdata=newbyte[imgdatalen];57
Streamimgdatastream=fi.OpenRead();58
intn=imgdatastream.Read(imgdata,0,imgdatalen);59
stringConnectionString="server=.;database=image;uid=sa;pwd=admin";60
SqlConnectionconn=newSqlConnection(ConnectionString);61
62
stringsql="insertinto[image](picture)values(@imgdata)";63
64
SqlCommandcmd=newSqlCommand(sql,conn);65
66
SqlParameterparamData=newSqlParameter("@imgdata",SqlDbType.Image);67
paramData.Value=imgdata;68
cmd.Parameters.Add(paramData);69
70
conn.Open();71
cmd.ExecuteNonQuery();72
conn.Close();73
}74
}75
catch(Exceptionerr)76
{77
Response.Write("出现错误:"+err.Message.ToString());78
}79
finally80
{81
if(i==0)82
{83
ST.MessageBox(Page,"没有匹配的文件!","确定");84
}85
else86
{87
ST.MessageBox(Page,"成功上传"+i.ToString()+"个文件!","确定");88
}89
//最后删除此文件夹下的文件90
}91
}92
}93
}94
===============================================
下面是读取文件
前台：
<!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>-->1
<%@PageLanguage="C#"AutoEventWireup="true"CodeFile="test2.aspx.cs"Inherits="CommPage_test2"%>2
3
<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">4
5
<htmlxmlns="http://www.w3.org/1999/xhtml">6
<headrunat="server">7
<title>无标题页</title>8
</head>9
<body>10
<formid="form1"runat="server">11
<div>12
<imgid=ImgSpan1border=0src="testimg/select.jpg"><br>13
<imgid=imgborder=0>14
<br/>15
<inputtype=buttonvalue=顺转90度onclick="document.all.ImgSpan.style.filter='progid:DXImageTransform.Microsoft.BasicImage(Rotation=1)'"id="Button3">16
<inputtype=buttonvalue=顺转180度onclick="document.all.ImgSpan.style.filter='progid:DXImageTransform.Microsoft.BasicImage(Rotation=2)'">17
<inputtype=buttonvalue=逆转90度onclick="document.all.ImgSpan.style.filter='progid:DXImageTransform.Microsoft.BasicImage(Rotation=3)'">18
<inputtype=buttonvalue=恢复角度onclick="document.all.ImgSpan.style.filter='progid:DXImageTransform.Microsoft.BasicImage(Rotation=0)'">19
<br/>20
<br/>21
<br/>22
<asp:ButtonID="Button1"runat="server"OnClick="Button1_Click"Text="图片保存到数据库中"Height="24px"Width="176px"/><br/>23
<br/>24
<asp:ButtonID="Button2"runat="server"OnClick="Button2_Click"Text="显示图片"/><br/>25
<br/>26
<br/>27
</div>28
</form>29
</body>30
</html>31
32
33
<scriptlanguage="javascript"<span
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