30 items found in the ASP.NET Web Forms Category

The Best Way To Import Data From Excel To SQL Server via ASP.NET

14 April 2016 13:42

ADO.NET ASP.NET MVC ASP.NET Web Forms ASP.NET Web Pages EPPlus

I've seen a lot of questions about the best way to import data from uploaded Excel files to a SQL Server database in an ASP.NET application. Most solutions involve the use of the JET or ACE OLEDB providers to read data from the saved Excel file, and some even show how to use Office Interop to obtain the data. However, all of these solutions rely on additional components being installed on the server, and they also require the uploaded file to be saved somewhere, even temporarily, which creates an additional maintenance task. The solution that follows makes use of a Nuget package that gets deployed with your application and can work with streams, so the uploaded file doesn't need to be saved. It is, in my submission, THE best way to import data from uploaded Excel files to SQL Server in an ASP.NET application.

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Viewed 3611 times

2 Comments for this item

Exploring Prefix: A Free ASP.NET Profiling Tool

30 March 2016 19:21

ASP.NET MVC ASP.NET Web Forms ASP.NET Web Pages

Prefix is a free profiler for ASP.NET applications. It's dead easy to use and it will help you find bugs in your code that you didn't even know you had. I found two in what I thought were properly working apps within an hour of downloading Prefix.

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Viewed 5249 times

5 Comments for this item

Request.Form Is Empty When Posting To ASPX Page

26 January 2016 07:39

ASP.NET Web Forms

A couple of threads have been posted recently to the ASP.NET forums complaining that values posted to ASPX files are mysteriously disappearing. This post looks at the most likely cause and provides some solutions.

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Viewed 2588 times

5 Comments for this item

SEO For ASP.NET Web Sites: Getting content indexed

16 December 2015 07:37

ASP.NET MVC ASP.NET Web Forms ASP.NET 5 SEO

This is the last in a series of articles that explore how to optimise ASP.NET web sites for search engines. Each article in the series concentrates on a specific topic and looks at the features and tools available to ASP.NET developers to help make sites search engine friendly and thereby improve rankings and click throughs from search results. This article explores how to ensure that search engines are aware of all of the content you want them to crawl and how to inform them when the location of that content is no longer valid.

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Viewed 2281 times

0 Comments for this item

SEO For ASP.NET Web Sites: URLs

07 December 2015 08:57

ASP.NET MVC ASP.NET Web Forms ASP.NET 5 SEO

This is the second in a series of articles that explore how to optimise ASP.NET web sites for search engines. Each article in the series concentrates on a specific topic and looks at the features and tools available to ASP.NET developers to help make sites search engine friendly and thereby improve rankings and click throughs from search results. This article will looks at some best practices concerning your site's URLs and how to make them more user friendly for search engines and humans alike.

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Viewed 4466 times

1 Comment for this item

SEO For ASP.NET Web Sites: Content

01 December 2015 07:53

ASP.NET MVC ASP.NET Web Forms ASP.NET 5 SEO

This is the first in a series of articles that explore how to optimise ASP.NET web sites for search engines. Each article in the series concentrates on a specific topic and looks at the features and tools available to ASP.NET developers to help make sites search engine friendly and thereby improve rankings and click-throughs from search results. This first article will look at how to present your site content to search engines in the most optimal way.

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Viewed 3190 times

5 Comments for this item

Downloading multiple files in ASP.NET

09 October 2015 08:53

ASP.NET MVC ASP.NET Web Forms

This short article examines the baffling issue that a lot of people seem to encounter when attempting to send multiple files to the client from an ASP.NET application, and provides the solution.

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Viewed 10781 times

3 Comments for this item

Reading Text-based Files In ASP.NET

17 July 2015 13:43

C# General ASP.NET MVC ASP.NET Web Forms

Every time I need to work with the contents of text-based files in an ASP.NET application I invariably start off thinking about using the various static methods on the System.IO.File class to extract the text and then some string manipulation or Regex to parse the content into some kind of structure. And, just in time, I remember the TextFieldParser class that hides itself away in the Microsoft.VisualBasic assembly. The purpose of this article is to introduce this component to a wider audience, but also to serve me as an aide-mémoire in terms of the basic usage, which I always have to look up.

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Viewed 3342 times

0 Comments for this item

A Better Way To Export Gridviews To Excel

07 July 2015 13:49

ASP.NET Web Forms EPPlus

There are countless articles that demonstrate exporting ASP.NET GridViews to Excel. They pretty much all do the same thing - they use the RenderControl method to generate HTML and then save it to a file with a .xls extension. This kind of works, but the resulting file is actually an HTML file masquerading as an Excel file. And that has two flaws: it cannot be used as a data source because providers complain that it is not in an acceptable format, and users of Office 2007 or newer are always confronted with a warning about the contents of the file when they try to open it, causing confusion, suspicion or annoyance. This article shows how to use the free, open source library to export the content of a GridView control to a genuine .xlsx file that doesn't suffer these problems.

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Viewed 41045 times

10 Comments for this item

Reading Excel Files Without Saving To Disk In ASP.NET

30 June 2015 14:47

ASP.NET Web Forms EPPlus

This article allows me the opportunity to demonstrate a feature of my newest favourite open source library: EPPlus. EPPlus is a .net library that reads and writes Excel 2007+ files using the Open Office Xml format (xlsx). This fantastic, easy to use (and free) library enables the use of Excel in ASP.NET applications without the need to install the Access Database Engine (ACE) or having to mess about with unsupported Office Automation on the web server (assuming you can even get Office installed there). Prompted by a rash of similar questions that appeared on the ASP.NET forums recently, this article looks at reading the contents of an uploaded Excel file without saving it, and displaying the data in a Web Forms GridView.

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Viewed 27903 times

16 Comments for this item

Scheduled Tasks In ASP.NET With Quartz.Net

07 August 2014 08:34

General ASP.NET MVC ASP.NET Web Forms ASP.NET Web Pages

A perennial question on the ASP.NET forums concerns how to schedule regular tasks as part of a web application. Typically, the requirement is to send emails once every 24 hours at a particular time each day, but it could actually be anything from tweeting on a schedule to performing maintenance tasks. Equally typically, half a dozen members on the forum dive in with recommendations to install Windows Services or schedule batch files with the Task Scheduler - regardless of the fact that most web site owners are not afforded such privileges as part of their shared hosting plan.

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Viewed 110996 times

66 Comments for this item

Classic ASP Include Files in ASP.NET

23 June 2010 07:43

Classic ASP ASP.NET Web Forms

Include files within classic ASP are about the only way to achieve some measure of code-reuse within frameworks that offer little or nothing by way of composition or inheritance. Judging by the number of questions in forums, there are still a lot of people moving across from classic ASP who are puzzled as to how to approach replacing include files within ASP.NET. A number of articles illustrate individually how to do so for site-wide layout reasons, including widgets, reusing global functions, or actually including the content of a file. However, I haven't been able to find one resource that brings all these together, hence the purpose of this article.

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Viewed 135665 times

4 Comments for this item

Highlighting Keywords Found In Search Results

22 May 2010 19:41

C# ASP.NET 3.5 Extension Method ASP.NET Web Forms

A common question in the forums is how to highlight key words found in search results. Here's an extension method that does that, both for partial matches, or whole word matches.

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Viewed 46119 times

8 Comments for this item

Storing Files and Images in Access with ASP.NET

06 December 2009 19:46

MS Access ASP.NET 3.5 ASP.NET Web Forms

Should you store files and images in the database or the filesystem in an ASP.NET application?  With SQL Server this is a dilemma, with both approaches having their pros and cons.  When it comes to Access, the decision is much easier to make.  Because an Access database is restricted to 2Gb, it makes more sense to store files in the file system.  However, sometimes, you may not have the choice. If you have to use the database, here's how.

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Viewed 41677 times

8 Comments for this item

Simple File Download Protection with ASP.NET

25 November 2009 09:09

ASP.NET 3.5 ASP.NET Web Forms

When it comes to protecting files from unauthorised downloading, the vast majority of articles offer solutions that involve mapping common file types (.pdf, .txt, .doc etc) to ASP.NET within Internet Information Services.  However, often in a shared hosting environment, you don't have access to IIS and the hosting company will not agree to providing such mappings for you, so what do you do?

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Viewed 118466 times

36 Comments for this item

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satyabrata 19/06/2016 18:53
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Nice article. Thanks. The menu on this website not working in mobile....

satyabrata 16/05/2016 06:28
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This is great. Thanks for sharing....

sharey 06/05/2016 13:15
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nice work gentleman.Really helpfull....

Satyabrata Mohapatra 20/04/2016 04:36
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Another beauty !!!! Thanks for sharing....

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This tool is awesome! I am very thankful for introducing this tool for us! By any chance, do you is...

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Thanks - spent hours trying to figure this out. I'm out of date and trying to start working on some...

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In response to Exploring Prefix: A Free ASP.NET Profiling Tool
'Tis indeed a marvellous thing. Just waiting on its appearance for ASP.NET Core. Hopefully not long...

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Thank you! I spent a day to understand what problem is before I found your article! But I made of...

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This is great!!!!!...

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In response to Windows Authentication With ASP.NET Web Pages
+1 ! This worked for me like a magic!~ thank you very much Mike! ;)...