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File Download Dialogue box

Posted on 2009-05-11
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Medium Priority
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Last Modified: 2012-05-06
Hi!
I have a generic download page which all my download links will point to.
It will take in some paremeters to do some checking but that is not the problem.

I need to do a "File Download" dialogue box which will allow the user to either save or open.

What i am encountering is...
If i upload a 2MB file, if i chose to save or open in the file download dialogue box, the file will be corrupted.
If i choose to save the file down, it will NOT be 2MB but maybe 1.6MB.

Any advice?
SPWeb web = SPContext.Current.Web;
web.AllowUnsafeUpdates = true;
string contentType = "";
 
string url = http://mydomain.com/libraryname/foldername/document.doc
 
            SPFile tempFile = web.GetFile(url);
 
            byte[] obj = (byte[])tempFile.OpenBinary();
 
            switch (casestring)
            {
 
                case "txt":
 
                    contentType = "text/plain";
 
                    break;
 
                case "htm": contentType = "text/html";
 
                    break;
 
                case "html": contentType = "text/html";
 
                    break;
 
                case "rtf": contentType = "text/richtext";
 
                    break;
 
                case "jpg": contentType = "image/jpeg";
 
                    break;
 
                case "jpeg": contentType = "image/jpeg";
 
                    break;
 
                case "gif": contentType = "image/gif";
 
                    break;
 
                case "bmp": contentType = "image/bmp";
 
                    break;
 
                case "mpg": contentType = "video/mpeg";
 
                    break;
 
                case "mpeg": contentType = "video/mpeg";
 
                    break;
 
                case "avi": contentType = "video/avi";
 
                    break;
 
                case "pdf": contentType = "application/pdf";
 
                    break;
 
                case "doc": contentType = "application/msword";
 
                    break;
 
                case "dot": contentType = "application/msword";
 
                    break;
 
                case "csv": contentType = "application/vnd.msexcel";
 
                    break;
 
                case ".xls": contentType = "application/vnd.msexcel";
 
                    break;
 
                case ".xlt": contentType = "application/vnd.msexcel";
 
                    break;
 
                default: contentType = "application/octet-stream";
 
                    break;
 
            }
 
            HttpContext.Current.Response.ClearContent();
            HttpContext.Current.Response.ClearHeaders();
            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment; filename= " + DocName);
            HttpContext.Current.Response.ContentType = contentType;
 
            //Check that the client is connected and has not closed the connection after the request
 
            if (HttpContext.Current.Response.IsClientConnected)
                HttpContext.Current.Response.BinaryWrite(obj);
 
            HttpContext.Current.Response.Flush();
            HttpContext.Current.Response.Close();

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Question by:darenceang
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4 Comments
 
LVL 17

Expert Comment

by:GreatGerm
ID: 24361420
I guess I'm curious as to why you aren't using the OOB document library interface?
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LVL 4

Author Comment

by:darenceang
ID: 24361681
Hi GreatGerm!

What u mean by OOB document library interface?
Sorry... noob
:(
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LVL 17

Expert Comment

by:GreatGerm
ID: 24363802
SharePoint has a decent interface in its document library list type that handles what you're wanting to do.  You can either just use it in the list or use their script to handle it at runtime.  You can see how it's setup by looking at any document library, but I have also included the page code that it uses.
 
<TR class="ms-alternating">
	<TD Class="ms-vb-icon">
		<A TABINDEX=-1 HREF="/sites/sitename/doclibrary/fileName.aspx" onclick="return DispEx(this,event,'TRUE','FALSE','FALSE','','0','SharePoint.OpenDocuments','SharePoint.WebPartPage.Document','1','','324','0','0','0x7fffffffffffffff')">
			<IMG BORDER=0 ALT="fileName.aspx" title="fileName.aspx" SRC="/_layouts/images/icsmrtpg.gif">
		</A>
	</TD>
	<TD Class="ms-vb-title" height="100%">
		<table height="100%" cellspacing=0 class="ms-unselectedtitle" onmouseover="OnItem(this)" CTXName="ctx1" Id="5" Url="/sites/sitename/doclibrary/fileName.aspx" DRef="sites/sitename/doclibrary" Perm="0x7fffffffffffffff" Type="SharePoint.WebPartPage.Document" Ext="aspx" Icon="icsmrtpg.gif|Microsoft Office SharePoint Designer|SharePoint.OpenDocuments" OType="0" COUId="" SRed="1" COut="0" HCD="" CSrc="" MS="0" CType="Document" CId="0x010100626BBFC9A12B5D40966CF75650AD5A0E" UIS="512" SUrl="">
			<tr>
				<td width="100%" Class="ms-vb">
					<A onfocus="OnLink(this)" HREF="/sites/sitename/doclibrary/fileName.aspx" onclick="return DispEx(this,event,'TRUE','FALSE','FALSE','','0','SharePoint.OpenDocuments','SharePoint.WebPartPage.Document','1','','324','0','0','0x7fffffffffffffff')">
						fileName
						<img src="/_layouts/images/blank.gif" class="ms-hidden" border=0 width=1 height=1 alt="Use SHIFT+ENTER to open the menu (new window).">
					</A>
				</td>
				<td>
					<img src="/_layouts/images/blank.gif" width=13 style="visibility:hidden" alt="">
				</td>
			</tr>
		</table>
	</TD>
	<TD Class="ms-vb2">
		<NOBR>12/23/2008 11:03 AM</NOBR>
	</TD>
	<TD Class="ms-vb-user">
		<table cellpadding=0 cellspacing=0 dir="">
			<tr>
				<td style="padding-right: 3px;">
					<a href="javascript:" onclick="IMNImageOnClick();return false;" class="ms-imnlink">
						<img title="" alt="No presence information" name="imnmark" border="0" valign="middle" height="12" width="12" src="/_layouts/images/blank.gif" sip="USER" id="imn2,type=sip" >
					</a>
				</td>
				<td style="padding: 1px 0px 0px 0px;" class="ms-vb">
					<A ONCLICK="GoToLink(this);return false;" HREF="/sites/sitename/_layouts/userdisp.aspx?ID=1">
						USER
					</A>
				</td>
			</tr>
		</table>
	</TD>
</TR>

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Accepted Solution

by:
darenceang earned 0 total points
ID: 24372168
Solved!
The change is Response.End instead of Response.close

This will allow the buffer to finish what it does before closing.
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