Controls Available in Asp.net

A number of ASP.NET controls, some of which is to explain the bellows.

? HTML server controls: - HTML elements server helps for us so that we can use in your programming. HTML server controls expose an object model that maps very closely to do with the HTML elements that we can get it for HTML server control in the programming.

? Web server controls: - The control features than HTML server controls the name, because these proposals are on the Internet that can help a lot. Web server controls do not contain the only form of this type of control
such as buttons and text fields, but also contains some specific purposes, such as a calendar control. Web server controls are more abstract than HTML server controls that are in their object model does not necessarily HTML.

? Validation Controls:- These collectlogic or we can say conditional controls that allow us to test a user input. We can simply attach a validation control to an input control and test what the user input in the input control. Validation controls are provided to allow you to check for a required field, to test against a specific value or pattern of characters, to verify that a value lies within a range, or we can also compare and also take a validation summary.

? user control: - Here we are in many places, it is useful to use these controls to a particular control. We have another Web Forms page can include a Web Fomuyuzakontororu, menus, help to create the toolbar, and other reusable elements.

? Other control: - control of mobile devices like these. Create mobile applications, we use the same framework, we use the Web application, but we are creating mobile Internet, rather than the form of Web Forms
pages and use the controls that are designed specifically for mobile devices.

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Asp.net Controls: Important Controls in Web Site Development

ASP.NET is developed and marketed by Microsoft to allow web site development services build dynamic websites, web services and web application. This web application framework was first released in January 2002. It initiated with the version 1.0 of the .NET Framework. ASP.NET proved to be the best successor to Microsoft’s Active Server Pages (ASP) technology.

ASP.NET framework is built on the CLR, or Common Language Runtime, allowing programmers to write ASP.NET code using any supported. NET language. The Web application frameworks have a lot of trouble, free and easy programming interface. These controls are very important web site development services. The following controls in ASP.NET:

Validation Controls:

In a nutshell, is called a conditional validator controls. These controls, the programmer can test the user input. These controls need to test the pattern of string or a string or a specific value primarily. Web site development services, use the validation controls to check the position in the range of values. This is compared to them, you can get a validation service.

User Controls:

Programmers need controls for the use of a particular control in many places. User controls on the same web-form structure. A Web-Development Web-Form Service includes controls for creating menus, toolbars and other elements that are reusable.

HTML server controls:

These controls are all a great help to expose an object model that maps very closely with the elements of HTML. This helps develop a Web service to work more freely in programming HTML.

Web Server Controls:

A web site development services, the use of these controls because they have many functions. Web server controls include, such as calendar, the formation of a special type of control, such as text boxes and button control. The concept of control is more than HTML server controls and have more features.

There are many other tests used, but particularly for mobile applications. The controls used to create forms that are associated with mobile devices.

Ajax Form Validation and Thread-safe Ajax

This degradable form validation demo verifies the form at the server side on the classic form submit, and also implements AJAX validation while the user navigates through the form.

Degradable AJAX Form Validation

Doing a final server-side validation when the form is submitted is always a must. If someone disables JavaScript in your browser settings, AJAX validation on the client side will not work exposing sensitive data, and thus an evil to visitors the important data back) on the server (for example, damage caused by SQL injection. Always validate user input on the server!

This form validation application validates a registration form, using both AJAX validation (client side) and typical server-side validation:

* AJAX-style (on the client side), when each form field loses focus (the onblur). The field's value sent to the server, which validates the data and return results (0 for failure, success 1). If the validation fails, an error message will quietly appear and notify the user of the validation failure.
* PHP style (on the server) you will be sent to the entire form. This is for a particular rule, if you check the user input validation is not always what server. If no errors, if found, the input data is valid, the browser will be redirected to a page successfully. If the validation fails, however, the form page the user is again stressed that sent the invalid field.

Both AJAX validation and PHP validation check the entered data against these rules:

* Username must not already exist in the database
* Name field cannot be empty
* A gender must be selected
* Email address must be written in a valid email format, such as xyz@domain.com
* Phone number must be written in standard US form: +xx xxxxxxxxx

Thread-Safe AJAX

Some threads of the code will function correctly when it is safe when multiple concurrent threads. In this exercise, we have to make asynchronous requests to the server, the user input box and change every time you need to input data to validate the selected leaves.

The technology behind the hidden, but said, if the user input fields will soon be passed, or the server connection is slow, in this case, Web application will attempt to XMLHttpRequest object through a request for a new server is still busy to wait for a response in the previous request (which will generate an error, the application will not function properly).

Depending on the circumstances at hand, the ideal solution to this problem may be:

If you are new to all messages sent to the server must create an instance of the XMLHttpRequest *. To implement this method is simple, if multiple requests are sent to the same time, can degrade the performance of the server, it does not guarantee the order and receive a response.
* Record the message in a queue and send it later when the XMLHttpRequest object is able to make new requests. The requests are made in the expected order. Using a queue is particularly important in applications where the order of the messages is important.
* Schedule automatic re-trial was made after the specified time requirements. This method is similar to a queue and you do not let more than one time server's request, but does not guarantee the order in which requests, or in the order the responses received.
* Ignore the message.

In this form validation exercise, we use a message queue. When the user leaves an input element, a message to validate its value is added to the queue. When the XMLHttpRequest object is clear to make a new request, it takes the first message from the queue.

Queue is a first in first out (FIFO) structure, which guarantees the correct order to send e-mail. To obtain information on how to work, to demonstrate the feeling of pages and then press the TAB key to fast times, and then wait to see reaction to verify that the display one by one.

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