Hi;

I have a HyperLinkField and have set  Target="_blank" in the properties.
When I click on it it asks me if I want to save or open the file. I sthere a
way to have it always just open the file?

Hi Dave,

This prompt is controlled by user, it's not possible to force open it
either in server-side code or javascript code. It's for security reason,
you don't want a web site to open arbitrary file automatically. When the
user gets the prompt, he/she can uncheck the "Always ask before opening
this type of file", -- which saves the setting in registry:
HKEY_CURRENT_USER\Software\Microsoft\Windows\Shell\AttachmentExecute.

On the other hide, we can do the opposite thing: we can force a file always
to be downloaded instead of open directly by setting Content-Type and
Content-Disposition headers"

#How To Raise a "File Download" Dialog Box for a Known MIME Type
http://support.microsoft.com/default.aspx/kb/260519


Sincerely,
Walter Wang (waw***@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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this is weird because it even does it for html files - yet normally when I
click on a link that launches anohter window - it just does it.

Show quoteHide quote

Do you mean that following html tag will prompt the user to open/save the
html file?

<a href="test.htm" target="_blank">test.htm</a>


and what if you remove the target attribute?


Does only one machine has this issue or all have it?


Regards,
Walter Wang (waw***@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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Not exactly - I have a HyperLinkField with the following:

DataNavigateUrlFields="ID, Ext"
DataNavigateUrlFormatString="~/report-view.{1}?ID={0}" Target="_blank" - I'm
not sure how this is handled by ASP.NET.

Show quoteHide quote

What's the result html looks like? The HyperLinkField is generating html
content such as:

<a href="report-view.htm?ID=15" target="_blank">here</a>

If the ID=15 and Ext=htm.



Regards,
Walter Wang (waw***@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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Here is the actual html from "view source" on the generated page:

<a onMouseOver="this.firstChild.src='images/button_over.gif';"
onMouseOut="this.firstChild.src='images/button.gif';"
onClick="this.firstChild.src='images/button_click.gif';"
href="report-view.html?ID=101" target="_blank"><img src="images/button.gif"
alt="view the report mondays" style="border-width:0px;" /></a>

Show quoteHide quote

I've tested it on my side, it's still working correctly, I don't see the
open/save prompt for a simple .html file.

1) Does it work if you remove the 'target="_blank"' attribute?
2) Does this only reproduce on a specific client system?
3) Does it reproduce using only static html files?
4) Does it reproduce using .htm extension?
5) Would you please try to use Fiddler to see the response's Content-Type
header?

Regards,
Walter Wang (waw***@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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Hi;

I started my ASP.NET app and then created the file below trying both .html
and .htm and when I click on the link I get prompted.

Here is the file:
<html>
<body>
<a onMouseOver="this.firstChild.src='images/button_over.gif';"
onMouseOut="this.firstChild.src='images/button.gif';"
onClick="this.firstChild.src='images/button_click.gif';"
href="report-view.htm?ID=101" target="_blank"><img src="images/button.gif"
alt="view the report mondays" style="border-width:0px;" /></a>
</body>
</html>

One follow-on note. This is not an actual file on my system. This file is
handled by:
    <httpHandlers>
        <add verb="*" path="report-view.*" type="ReportView"/>
    </httpHandlers>

Show quoteHide quote

Would you please show some code of your custom http handler?

Also, what's the output's content-type?


Regards,
Walter Wang (waw***@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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Here is the entire class. I think it's the bottom 4 or 5 lines that matter.

/*
* Copyright (c) 2006 by Windward Studios, Inc. All rights reserved.
*
* This software is the confidential and proprietary information of Windward
Studios ("Confidential Information"). 
* You shall not disclose such Confidential Information and shall use it
only in accordance with the terms of the
* license agreement you entered into with Windward Studios, Inc.
*/

using System.Web;
using System;
using System.Web.SessionState;
using net.windward.portal;
using net.windward.api.csharp;
using System.IO;
using net.windward.portal.net.data;
using net.windward.portal.security;
using net.windward.portal.audit;

/// <summary>
/// Displays the report requested by the url.
/// </summary>
public class ReportCreate : IHttpHandler, IRequiresSessionState
{

    public const string IMAGES_DIR = "temp-images";

    #region IHttpHandler Members

    public bool IsReusable
    {
        get { return false; }
    }

    /// <summary>
    /// Create a report and return it as the page.
    /// </summary>
    /// <param name="context">The request context.</param>
    public void ProcessRequest(HttpContext context)
    {
        // make sure is a user. Checks access rights to this template below.
        if (!PortalRole.IsInRole((PortalRole.ROLES.USER)))
            throw new PortalSecurityException(PortalSecurityException.TYPE.NEED_ROLE,
PortalRole.ROLES.USER.ToString());

        int id;
        try
        {
            id = Convert.ToInt32(context.Request.QueryString["wr_id"]);
        }
        catch (Exception ex)
        {
            throw new InvalidParametersException("wr_id",
context.Request.QueryString["wr_id"], ex);
        }
        ReportItem.FORMAT format;
        try
        {
            format =
ExtensionConvert.ToFormat(context.Request.QueryString["wr_format"]);
        }
        catch (Exception ex)
        {
            throw new InvalidParametersException("wr_format",
context.Request.QueryString["wr_format"], ex);
        }

        // set up the maps - we use for all datasources
        KeyPairDictionary vars = new KeyPairDictionary();
        for (int ind = 0; ind < context.Request.QueryString.Count; ind++)
        {
            string key =
HttpUtility.UrlDecode(context.Request.QueryString.GetKey(ind));
            if (!key.StartsWith("wr_"))
                vars.Add(key,
HttpUtility.UrlDecode(context.Request.QueryString.Get(ind)));
        }

        Report report = GenerateReport.Create(id, format, vars,
context.Server.MapPath(IMAGES_DIR), IMAGES_DIR, "wr");
        Auditor.Log(Auditor.MODULE.REPORT, Auditor.OPERATION.CREATE,
context.Request.RawUrl);

        // track image files created
        if (report is ReportHtml)
            foreach (HtmlBitmap bitmap in ((ReportHtml)report).Bitmaps)
                Global.AddTempFile(context.Session, bitmap.Filename);

        context.Response.Clear();
        context.Response.ClearHeaders();
        context.Response.ClearContent();

        context.Response.ContentType = ExtensionConvert.ToContentType(format); //
returns MediaTypeNames.Text.Html
        ((MemoryStream)report.GetReport()).WriteTo(context.Response.OutputStream);

        context.Response.End();
    }

    #endregion

}


Show quoteHide quote

Hi Dave,

I just tried again using a custom http handler and unfortunately I still
wasn't able to reproduce the issue. Since I don't have your report code,
I'm using following simple http handler:

/// <summary>
/// Displays the report requested by the url.
/// </summary>
public class ReportCreate : IHttpHandler, IRequiresSessionState
{

    public const string IMAGES_DIR = "temp-images";

    #region IHttpHandler Members

    public bool IsReusable
    {
        get { return false; }
    }

    /// <summary>
    /// Create a report and return it as the page.
    /// </summary>
    /// <param name="context">The request context.</param>
    public void ProcessRequest(HttpContext context)
    {
        context.Response.ContentType = MediaTypeNames.Text.Html;
        string text = "Hello";
        MemoryStream ms = new MemoryStream();
        byte[] buf = Encoding.ASCII.GetBytes(text);
        ms.Write(buf, 0, buf.Length);
        ms.Seek(0, SeekOrigin.Begin);
        ms.WriteTo(context.Response.OutputStream);
        context.Response.End();
    }

    #endregion

}

Here's my web.config:

<system.web>
    <httpHandlers>
      <add verb="*" path="report-view.*" type="ReportCreate, __code" />
    </httpHandlers>
...

HomePage.htm:

    <a href="report-view.htm" target="_blank">Report View</a>


report-view.htm doesn't exist.

When I view HomePage.htm in browser, it correctly opens a new window and
shows "Hello".

I noticed you haven't confirmed whether this issue exist on a specific
client or not.

If it exists on all you system, would you please help me to create a more
complete reproducible project? Thanks.



Regards,
Walter Wang (waw***@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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that others may learn and benefit from your issue.
==================================================

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Hi;

Ok, I figured you know this well and your code works. So I took your code,
it worked on mine. I then looked for differences and here is the problem I
had:

context.Response.AddHeader("Content-Disposition", "attachment;filename=" +
ri.Title + ext);

Got rid of that and now it's fine.

Show quoteHide quote

Dave,

I'm glad that you've found the cause. Yes this header is used to force
browser download the file.

Regards,
Walter Wang (waw***@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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that others may learn and benefit from your issue.
==================================================

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One more follow-on note. That same page has a standard <a href=... to an html
file that exists with target='_blank' - and it pops up with no prompt. So it
appears to be something about it being returned by a program and/or the fact
that there is javascript involved.

Show quoteHide quote

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