4449ASP.NET Info Centerhttp://www.asp101.com/aspplus/index.aspThis page is just an index of the ASP.NET content currently online here at ASP 101. It's meant as an easy way for you to find ASP.NET info without having to wade through all our "classic" ASP content.ASP.NET > Tips and TutorialsOct 10, 2006
In this article we will explore three different and important e-mailing techniques; to send a simple text e-mail, to send HTML content via e-mail, and to send attachments.
Let's also review the application environment. A typical user analysis model would consist of around a 100 of these data entry pages. The Web site itself supports an unlimited number of analysis models. Thus, the database is quite large and the process of obtaining the meta data is quite complex. Running more queries than absolutely necessary can be a real drag on performance. Also keep in mind that a typical user will spend anywhere from 15 - 45 minutes on a single data entry page completing that section of the analysis model.
Normally, I would be reluctant to implement a solution that loads up the ViewState in this manner. Our web farm environment pretty much ruled out the use of static objects or the application cache. The performance impact of having larger than normal ViewState and the process of managing ViewState isn't necessarily prohibitive. That said, if you are trying to squeeze out every once of performance, doing this without it being necessary could hurt your cause.
You can use my sample as a means to measure how much is being stored in ViewState for the amount of data you expect to have in your own application. The default setting of 60 textboxes and 60 dropdown lists (each list contains 10 records) takes up roughly 100KB of html and ViewState combined
In the previous tutorial (Accessing MySQL Database with ASP.NET), we learned how to obtain, install, configure and run MySQL on Windows. Later we learned how to create new tables and display records using ASP.NET DataGrid control.
Web Services represent a new programming concept. I'm not going to give you a description of Web Services, what they are and what they can do for you. There's a beautiful explanation of Web Services at MSDN (see the Flash presentation).
In this tutorial you'll find out how to validate a TextBox and RadioButtonList control on a webform using RequiredFieldValidator, which will show a warning and stop the submission of the form if a required field has no value.
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