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Why not just do it the way you suggested? &nbsp;Just take the current time to ticks then use a basic hash such as base64 to create a somewhat obscured url. &nbsp;Someone could reverse engineer it if they wanted but this method would be easy if the information wasn't very sensitive.<br />
<br />

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Why not just do it the way you suggested?  Just take the current time to ticks then use a basic hash such as base64 to create a somewhat obscured url.  Someone could reverse engineer it if they wanted but this method would be easy if the information wasn't very sensitive.



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Hi,<br />
<br />
Please look into the following links.<br />
<br />
<a href="http://support.microsoft.com/kb/316934" rel="ugc nofollow">How To Use ADO.NET to Retrieve and Modify Records in an Excel Workbook With Visual Basic .NET</a><br />
<br />
<a href="http://www.codeproject.com/KB/office/excel_using_oledb.aspx" rel="ugc">Reading and Writing Excel using OLEDB</a><br />
<br />
<a href="http://www.davidhayden.com/blog/dave/archive/2006/05/26/2973.aspx" rel="ugc">Reading and Writing Excel Spreadsheets Using ADO.NET C# DbProviderFactory</a><br />

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Hi,

Please look into the following links.

How To Use ADO.NET to Retrieve and Modify Records in an Excel Workbook With Visual Basic .NET [http://support.microsoft.com/kb/316934]

Reading and Writing Excel using OLEDB [http://www.codeproject.com/KB/office/excel_using_oledb.aspx]

Reading and Writing Excel Spreadsheets Using ADO.NET C# DbProviderFactory [http://www.davidhayden.com/blog/dave/archive/2006/05/26/2973.aspx]


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Sorry, I posted to a wrong question. Please ignore it.
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Sorry, I posted to a wrong question. Please ignore it.

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Hello,<br />
<br />
I want to ask what is the best way to have the link to a file expire after a set time, so that the user gets sent a download link via email which they only have access to for say 24 hours. I would prefer to use a hash tag instead of a web.config global setting or cookie. So that the system sends you a new hash like:<br />
<br />
<a href="http://www.test.com/download.aspx?time=47326574836473847" rel="ugc">http://www.test.com/download.aspx?time=47326574836473847</a>
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Hello,

I want to ask what is the best way to have the link to a file expire after a set time, so that the user gets sent a download link via email which they only have access to for say 24 hours. I would prefer to use a hash tag instead of a web.config global setting or cookie. So that the system sends you a new hash like:

http://www.test.com/download.aspx?time=47326574836473847

Dynamic Download Link Using Hash Expiration

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.

.NET Programming

IIS is Internet Information Services, the web server included with Windows Server operating systems. All current versions are built on a modular architecture; modules can be added or removed individually so that those required for specific functionality are installed. The full installation of IIS includes HTTP, security, content, compression, caching, logging and diagnostics.

Microsoft IIS Web Server

Microsoft applications include a variety of software programs, including development and digital authoring programs (Expression and Media Center), educational programs, Internet software, including Essentials, Skype and the Live family, anti-virus, productivity applications and suites like Office, Excel, Word, Outlook, Access and PowerPoint, video games and server applications such as Exchange, SharePoint, IIS and Virtual Server.