Howto Force the Save As Dialog in the Browser

Posted by: Imar Spaanjaars at Tuesday, October 21, 2003 9:20:50 PM in: Web General
Your Web browser is set up to handle all kinds of documents. For example, when you open an .html page from a Web site, the browser knows it should parse this file, and display its rendered contents onscreen. The same is true for images; when you click on a link that directly links to an image, the image will be displayed in the browser.

This default behavior may not always be what you want. In some scenario's, it's useful to have the user download and save the file, instead of displaying it in the browser. This is a common requirement for files like images, Word documents, spread sheets and so on. This article will demonstrate you how you can force the client browser to present the Save As dialog, so your users can download the file and save it on their local hard disk.
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Howto Use Embedded Images in a Pocket PC Application

Posted by: Imar Spaanjaars at Monday, October 06, 2003 8:49:23 PM in: .NET General
Pocket PC applications, just like ordinary Windows applications, often use images for all kinds of purposes, like Toolbar buttons, backgrounds, or just to spice up the User Interface. If you want to be certain that the images you're going need are always present on the device, you can embed them in the assembly, so they are always available. This article will explore the steps you need to perform to embed the image in the assembly, and how to retrieve the image again at runtime.
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Howto Create a Hit Counter Using a Database

Posted by: Imar Spaanjaars at Saturday, October 04, 2003 3:27:03 PM in: Web General
If you have a live Web site on the World Wide Web, you may be interested in how many people are visiting your site. You can of course analyze the log files of your Web server but that information is usually difficult to read. The log files contain information for each and every request a visitor has made to your site, including resources like images, Flash movies and so on. This makes it near impossible to extract information about individual users. It would be a lot easier if you could count the number of individual users that have visited you since you started your site. It would also be useful if you could see the number of users that are currently browsing your site.

This article will show you how to accomplish these two tasks by storing the hit counters in Application variables and in a database using code in the global.asa file. The counters in the Application variables are used to display them on a page in your Web site; either as a counter so your visitors can see it as well, or somewhere on a page in your Admin section, so only you have access to them. By writing the counter to a database you can maintain its value even when you restart the Web server, while you still have a fast and scalable solution.

This article extends the ideas from two previous articles where the values of the counters were just stored in Application variables and in a text file.

There is also an ASP.NET version of this article available.
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Howto Create a Hit Counter Using a Text File

Posted by: Imar Spaanjaars at Saturday, October 04, 2003 3:18:37 PM in: Web General
If you have a live Web site on the World Wide Web, you may be interested in how many people are visiting your site. You can of course analyze the log files of your Web server but that information is usually difficult to read. The log files contain information for each and every request a visitor has made to your site, including resources like images, Flash movies and so on. This makes it near impossible to extract information about individual users. It would be a lot easier if you could count the number of individual users that have visited you since you started your site. It would also be useful if you could see the number of users that are currently browsing your site.

This article will show you how to accomplish these two tasks by storing the hit counters in Application variables and in a text file using code in the global.asa file. This article extends the ideas from a previous article where the values of the counters were just stored in Application variables. By writing the counters to a file you can maintain their values, even when you restart the Web server.

There is also an ASP.NET version of this article available.
Read on ...

Howto Create a Hit Counter Using the Global.asa File

Posted by: Imar Spaanjaars at Saturday, October 04, 2003 11:27:01 AM in: Web General
If you have a live Web site on the World Wide Web, you may be interested in how many people are visiting your site. You can of course analyze the log files of your Web server but that information is usually difficult to read. The log files contain information for each and every request a visitor has made to your site, including resources like images, Flash movies and so on. This makes it near impossible to extract information about individual users. It would be a lot easier if you could count the number of individual users that have visited you since you started your site. It would also be useful if you could see the number of users that are currently browsing your site.

This article will show you how to accomplish these two tasks by storing the hit counters in Application variables using code in the global.asa file. The disadvantage of this method is that this information is lost when you restart the Web server. Two subsequent articles will demonstrate how to store this information in a text file and in a database, so the value for the counter will be preserved when you restart your Web server.

There is also an ASP.NET version of this article available.
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Howto Style the Button of a input type="file" Control

Posted by: Imar Spaanjaars at Wednesday, October 01, 2003 5:13:55 PM in: Web General
Update!! 12-20-2003
There seems to be a problem with the code presented in this article. When you click the new and styled Browse button, the Browse for File dialog is opened, and when you select a file, both text boxes (the hidden and the fake field) are displayed with the file's full path and filename. However, when you click the submit button, the real (and hidden) file box gets cleared and the form will not submit. When you click the submit button again, the form will eventually submit, but because the file box is empty, your file will not be uploaded to the server. This problem has been discussed extensively on various forums on the web, including the one run by Wrox.

So far, I haven't been able to isolate the problem or come up with a solution. It looks like this problem is caused by some security mechanism in Internet Explorer. I haven't tested various versions of IE yet, but I am sure it doesn't run on IE 6, SP1 (well, it doesn't run on *my* IE 6, SP1 ;-) )

If you do find a browser that runs this code fine, please let me know.

When you are using Cascading Style Sheets (CSS) in your Web pages, it is likely that you want to change the appearance of your HTML buttons as well. After all, the dull looking gray buttons give your site a bit of an old fashioned look. Usually, changing the style is as easy as setting a style or a class attribute, like <input type="button" value="Send Form" style="background-color: red";> to give the button a red color. However, this won't work with the Browse button that is attached to an input box that allows a user to upload a file. This article will demonstrate a so
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Howto Create a Microsoft Access Database from ASP Code

Posted by: Imar Spaanjaars at Thursday, September 25, 2003 9:48:55 PM in: Web General
Although you should try to make most of your database design decisions at design-time, it can sometimes be really handy to create a database from your ASP code. This article explains how to create a Microsoft Access database using ASP.
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Howto Send E-mail from an ASPX Page

Posted by: Imar Spaanjaars at Monday, September 22, 2003 3:15:38 PM in: ASP.NET 1.x
This article will show you how simple it is to send an e-mail from an ASPX page. With just a few lines of code, you can add mail sending capabilities to your ASP.NET page in your website. Sample code is in C#.
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