Form Processing

asp:DropDownList is the server side control of asp.net & the drop down selection list is an element of HTML forms commonly know as Combo Box. Most of the times developers need to find or get the Selected Index value, Selected Value & Selected Text. In this post i will show you how one can write a cross-browser supported client side javascript to get Selected Index, Selected Text & Selected Value form asp.net server side control asp:DropDownList & HTML drop down selection list. Hope it will help & save time for developers. ...
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Using javascript to get the asp radio button list selected value is not an easy job like other asp.net objects. To get the selected value from asp radio button list you have to iterate through all the radio buttons in that set and then read the value for checked radio button. In this post i will try to give you a complete example on how we can read selected value or selected text from Asp RadioButtonList or from HTML input type="radio". So lets start. At first create a new aspx page. In this page i will add one Asp RadioButtonList & one HTML input type="radio" object. Also add two labels to display the Selected Value & Selected Text as well. Our targeted output should be...
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Use this quick wizard-like form to actually build a form that sends email using JMail. In a couple of minutes you will be able to recieve feedback.

The great advantage of ASP is possibility to respond to user queries or data submitted from HTML forms. You can process information gathered by an HTML form and use ASP code to make decisions based off this information to create dynamic web pages. This tutorial demonstrates how to create an HTML form and process the data....
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One way to generate dynamic PDF files is to create PDF template forms and then to fill them on the fly. This article show you how to do so very easily by using the FDF toolkit.

A handy function for validating strings and replacing unwanted contents, by searching for matches with regular expression patterns. There are two functions - one that replaces pattern matches, and one that can call the first function multiple times, each time with a different pattern....
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Many of us have faced situations when we fill invalid information in one field of a form, and when we submit, the forms apears again with that field in red color. This tutorial shows you how simple it is to add such facilities to your forms.

Validating Email addresses is not limitted to finding "@" and "." signs in the address! There are higher concepts, but few are aware of them. This article shows you a simple way to check if the Email address provided by a user is "real" to a higher extent than current famous validation codes do....
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When using checkboxes for selecting multiple items, there is an efficient way to read all the clicked checkboxes and return a string of their values.

A quick tutorial to show you the basics of form submission and handling.

This script shows how to send an email via the CDONTS objects available to ASP 3.0. It will take a selection of form input, create the required e-mail objects, send the e-mail to the specified recipient and then redirect the user to a confirmation page, thanking them for their input....
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Handling forms and processing the data you get from them is one of the fundamentals that need to be mastered if you are to develop a dynamic site. This is a very simple introductory tutorial on form handling.

Full VBS code, which lets you accept x-www-form-urlencoded forms in ASP without limit of size using BinaryRead (Request.Form has 100kB limit), recomended solution from MS KB (Q273482). Source of URLDecode function included.

ASPRSS has a subscription service that automatically submits articles to all the ASP directories out there. This article shows how the data is submitted to their forms using the IP*Works! WebForm component.

This article discusses how to deal with various checkboxes in form via ASP. Covers: The Default No-Frills Checkbox, Checkbox With An Associated Value, Multiple Checkboxs With The Same Name, and Checkbox Which Maintains It's State.

This is an extensive article that describes form validation technique to help the user submit correct information.

This article shows how to build a forms validation library using JavaScript and ASP. Its FormLib simplifies form creation and eliminates common forms-maintenance tasks.

Generic framework showing in detail how to implement forms with ASP, with validation and field persistence.

Select boxes must often communicate with one another (i.e., a Child select object's option values depend on the value selected in the Parent object). This tutorial details how to create a hierarchy of select objects using ASP, SQL, ADO, and JavaScript.

In this final part of ASP Form Handling series, the author discusses such topics as handling radio buttons and check boxes, emailing attachments with CDONTS, and some ways of using the data stored in the registration database covered in Part 3.