File upload/download from database. Download appends aspx page to end of file

R

Ryan Taylor

Hello.

I am trying to upload a file and save it in a Sql Server 2000 database. This
seems to be working fine. However, when I download the file from SQL Server,
it appears that the page that is downloading this file is being appended to
the end of the file. So I am accidently modifiying every file that is placed
in the database. What follows is my code for uploading and downloading a
file, minus the sql code to insert/retrieve the data into/from the database.
Does anyone see what might be wrong? Thanks in advance.

// uploading a file
HttpPostedFile file = btnAttachFile.PostedFile;
string fileName = System.IO.Path.GetFileName(file.FileName);
string mimeType = file.ContentType;
int fileSize = file.ContentLength;
byte[] fileData = new byte[fileSize];
file.InputStream.Read(fileData, 0, fileSize);

int questionId = Convert.ToInt32(Request.Params["qId"]);
int sessionId = Convert.ToInt32(Request.Params["sId"]);
string btnAttach = Request.Params["btnAttach"];

if(QstnrSql.UpdateAttachment(authUser, questionId, sessionId, fileName,
mimeType, ref fileData))
{
// success
}

// downloading a file
byte[] buffer = null;
string attachmentFileName = "";
string attachmentMimeType = "";
if(QstnrSql.DownloadAttachment(authUser, questionId, sessionId, out buffer,
out attachmentFileName, out attachmentMimeType))
{
// Convert the content to application/pdf
Response.Clear();
Response.ContentType = attachmentMimeType;
Response.AppendHeader("Content-Disposition", "Attachment; Filename=\"" +
attachmentFileName +"\"");
Response.BinaryWrite(buffer);
Response.Flush();
}


// orginal file orginalfile.txt
hello

//downloaded file originalfile2.txt
hello
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>ACMS: View Attachment</title>
<LINK href="../AcmsStyles.css" type="text/css" rel="stylesheet">
<meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
<meta content="C#" name="CODE_LANGUAGE">
<meta content="JavaScript" name="vs_defaultClientScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5"
name="vs_targetSchema">
</HEAD>
<body leftMargin="0" topMargin="0" ms_positioning="FlowLayout"
marginheight="0" marginwidth="0">

<script language="JavaScript1.2"
vqm_id="/acms/MenuScripts/ResOrgAdmin/ResOrgAdminData.js"
type="text/javascript">

vqm__notice='Visual QuickMenu Pro, (c) 2004 OpenCube Inc., All Rights
Reserved, Visit - www.opencube.com';

vqm__codebase='/acms/MenuScripts/ResOrgAdmin/';
vqm__database='/acms/';

</script>
<script language="JavaScript1.2"
src="/acms/MenuScripts/ResOrgAdmin/ResOrgAdminData.js"
type="text/javascript"></script>
<script language="JavaScript1.2"
src="/acms/MenuScripts/ResOrgAdmin/tdqm_loader.js"
type="text/javascript"></script>
<div class="outterDiv">
<table class="outterTable" cellSpacing="0" cellPadding="0">
<tr>
<td class="headerCell">
<table id="tblHeader" cellspacing="0" cellpadding="0" class="headerTable">
<tr>
<td colspan="3" class="headerBarTop">
</td>
</tr>
<tr>
<td colspan="3" class="headerBarCenter"></td>
</tr>
<tr>
<td colspan="3" class="headerBarBottom"></td>
</tr>
<tr>
<td class="headerImgCell" rowspan="3">
<img id="header_logo" class="headerLogoImg" src="../images/logo.jpg"
alt="Logo" border="0" />
</td>
<td class="headerAppTitleCell" rowspan="3">
<div class="headerAppTitle" id="appTitle">Acceleron Compliance Management
System</div>
</td>
<td class="headerStatusCell">
<span id="header_lblVersion" class="headerStatus">version: 0.4</span>
</td>
</tr>
<tr>
<td class="headerStatusCell">
<span id="header_lblStatus" class="headerStatus">Logged in as
RespondingAdmin<br>Responding Organization Administrator</span></td>
</tr>
<tr>
<td class="headerStatusCell">
<a id="header_lnkLogout" class="headerStatus"
href="../logout.aspx">logout</a></td>
</tr>
<tr>
<td colspan="3" class="headerBarTop"></td>
</tr>
<TR>
<TD class="headerBarCenter" colSpan="3"></TD>
</TR>
<TR>
<TD class="headerBarBottom" colSpan="3"></TD>
</TR>
</table>
</td>
</tr>
<tr>
<td class="innerTableCell">
<table class="innerTable" cellSpacing="0" cellPadding="0">
<tr>
<td class="navbarCell">
<script id="vqp_generate_mainitems"
language="javascript1.2">generate_mainitems()</script></td>
<td class="gutterCell"></td>
<td class="contentCell">
<form name="frmViewAttach" method="post"
action="ViewAttach.aspx?sId=32&amp;qId=1128" id="frmViewAttach">
<input type="hidden" name="__VIEWSTATE"
value="dDwtMTY4MjY1MzA1Mjt0PDtsPGk8Mz47PjtsPHQ8O2w8aTwzPjtpPDU+Oz47bDx0PHA8c
DxsPFRleHQ7PjtsPHZlcnNpb246IDAuNDs+Pjs+Ozs+O3Q8cDxwPGw8VGV4dDs+O2w8TG9nZ2VkI
GluIGFzIFJlc3BvbmRpbmdBZG1pblw8YnJcPlJlc3BvbmRpbmcgT3JnYW5pemF0aW9uIEFkbWlua
XN0cmF0b3I7Pj47Pjs7Pjs+Pjs+Pjs+k8oUXBcNrY4GyfjocrIX5+gh4O0=" />

View Attachment
</form>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td class="footerCell">
Copyright &copy;2004, Acceleron Compliance Systems
</td>
</tr>
</table>
</div>
</body>
</HTML>
 
B

bruce barker

add a Response.End() after the flush

-- bruce (sqlwork.com)


| Hello.
|
| I am trying to upload a file and save it in a Sql Server 2000 database.
This
| seems to be working fine. However, when I download the file from SQL
Server,
| it appears that the page that is downloading this file is being appended
to
| the end of the file. So I am accidently modifiying every file that is
placed
| in the database. What follows is my code for uploading and downloading a
| file, minus the sql code to insert/retrieve the data into/from the
database.
| Does anyone see what might be wrong? Thanks in advance.
|
| // uploading a file
| HttpPostedFile file = btnAttachFile.PostedFile;
| string fileName = System.IO.Path.GetFileName(file.FileName);
| string mimeType = file.ContentType;
| int fileSize = file.ContentLength;
| byte[] fileData = new byte[fileSize];
| file.InputStream.Read(fileData, 0, fileSize);
|
| int questionId = Convert.ToInt32(Request.Params["qId"]);
| int sessionId = Convert.ToInt32(Request.Params["sId"]);
| string btnAttach = Request.Params["btnAttach"];
|
| if(QstnrSql.UpdateAttachment(authUser, questionId, sessionId, fileName,
| mimeType, ref fileData))
| {
| // success
| }
|
| // downloading a file
| byte[] buffer = null;
| string attachmentFileName = "";
| string attachmentMimeType = "";
| if(QstnrSql.DownloadAttachment(authUser, questionId, sessionId, out
buffer,
| out attachmentFileName, out attachmentMimeType))
| {
| // Convert the content to application/pdf
| Response.Clear();
| Response.ContentType = attachmentMimeType;
| Response.AppendHeader("Content-Disposition", "Attachment; Filename=\"" +
| attachmentFileName +"\"");
| Response.BinaryWrite(buffer);
| Response.Flush();
| }
|
|
| // orginal file orginalfile.txt
| hello
|
| //downloaded file originalfile2.txt
| hello
| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
| <HTML>
| <HEAD>
| <title>ACMS: View Attachment</title>
| <LINK href="../AcmsStyles.css" type="text/css" rel="stylesheet">
| <meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
| <meta content="C#" name="CODE_LANGUAGE">
| <meta content="JavaScript" name="vs_defaultClientScript">
| <meta content="http://schemas.microsoft.com/intellisense/ie5"
| name="vs_targetSchema">
| </HEAD>
| <body leftMargin="0" topMargin="0" ms_positioning="FlowLayout"
| marginheight="0" marginwidth="0">
|
| <script language="JavaScript1.2"
| vqm_id="/acms/MenuScripts/ResOrgAdmin/ResOrgAdminData.js"
| type="text/javascript">
|
| vqm__notice='Visual QuickMenu Pro, (c) 2004 OpenCube Inc., All Rights
| Reserved, Visit - www.opencube.com';
|
| vqm__codebase='/acms/MenuScripts/ResOrgAdmin/';
| vqm__database='/acms/';
|
| </script>
| <script language="JavaScript1.2"
| src="/acms/MenuScripts/ResOrgAdmin/ResOrgAdminData.js"
| type="text/javascript"></script>
| <script language="JavaScript1.2"
| src="/acms/MenuScripts/ResOrgAdmin/tdqm_loader.js"
| type="text/javascript"></script>
| <div class="outterDiv">
| <table class="outterTable" cellSpacing="0" cellPadding="0">
| <tr>
| <td class="headerCell">
| <table id="tblHeader" cellspacing="0" cellpadding="0" class="headerTable">
| <tr>
| <td colspan="3" class="headerBarTop">
| </td>
| </tr>
| <tr>
| <td colspan="3" class="headerBarCenter"></td>
| </tr>
| <tr>
| <td colspan="3" class="headerBarBottom"></td>
| </tr>
| <tr>
| <td class="headerImgCell" rowspan="3">
| <img id="header_logo" class="headerLogoImg" src="../images/logo.jpg"
| alt="Logo" border="0" />
| </td>
| <td class="headerAppTitleCell" rowspan="3">
| <div class="headerAppTitle" id="appTitle">Acceleron Compliance
Management
| System</div>
| </td>
| <td class="headerStatusCell">
| <span id="header_lblVersion" class="headerStatus">version: 0.4</span>
| </td>
| </tr>
| <tr>
| <td class="headerStatusCell">
| <span id="header_lblStatus" class="headerStatus">Logged in as
| RespondingAdmin<br>Responding Organization Administrator</span></td>
| </tr>
| <tr>
| <td class="headerStatusCell">
| <a id="header_lnkLogout" class="headerStatus"
| href="../logout.aspx">logout</a></td>
| </tr>
| <tr>
| <td colspan="3" class="headerBarTop"></td>
| </tr>
| <TR>
| <TD class="headerBarCenter" colSpan="3"></TD>
| </TR>
| <TR>
| <TD class="headerBarBottom" colSpan="3"></TD>
| </TR>
| </table>
| </td>
| </tr>
| <tr>
| <td class="innerTableCell">
| <table class="innerTable" cellSpacing="0" cellPadding="0">
| <tr>
| <td class="navbarCell">
| <script id="vqp_generate_mainitems"
| language="javascript1.2">generate_mainitems()</script></td>
| <td class="gutterCell"></td>
| <td class="contentCell">
| <form name="frmViewAttach" method="post"
| action="ViewAttach.aspx?sId=32&amp;qId=1128" id="frmViewAttach">
| <input type="hidden" name="__VIEWSTATE"
|
value="dDwtMTY4MjY1MzA1Mjt0PDtsPGk8Mz47PjtsPHQ8O2w8aTwzPjtpPDU+Oz47bDx0PHA8c
|
DxsPFRleHQ7PjtsPHZlcnNpb246IDAuNDs+Pjs+Ozs+O3Q8cDxwPGw8VGV4dDs+O2w8TG9nZ2VkI
|
GluIGFzIFJlc3BvbmRpbmdBZG1pblw8YnJcPlJlc3BvbmRpbmcgT3JnYW5pemF0aW9uIEFkbWlua
| XN0cmF0b3I7Pj47Pjs7Pjs+Pjs+Pjs+k8oUXBcNrY4GyfjocrIX5+gh4O0=" />
|
| View Attachment
| </form>
| </td>
| </tr>
| </table>
| </td>
| </tr>
| <tr>
| <td class="footerCell">
| Copyright &copy;2004, Acceleron Compliance Systems
| </td>
| </tr>
| </table>
| </div>
| </body>
| </HTML>
|
|
|
 

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