What is the difference between User Control and Custom Control

Custom controls are compiled code(Dlls) easier to use,difficult to create and can be place in toolbox. You can drag and drop controls, Attributes of this control are visually set at design time. A custom control can be used in multiple application as shared DLLS. Any one can copy DLL of custom control in bin directory and add reference and use them. Normally custom controls are designed to provide custom functionality independent of consuming application.

User controls are similar to those of asp include files easy to create, can not be placed into the toolbox and dragged dropped from it. A User controls can share single application files. Normally designed to provided functionality that is reusable for the particular application.

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JavaScript Events

Following are some of the events that are provided by JavaScript

OnChange:

Occurs when user changes values in an input control. In text controls this event fire after user changes focus to other controls

OnClick:

This event occurs when a user clicks on the button control.This event is also occurs when a form is submitted to server.

OnMouseOver:

This events occur when user moves the mouse pointer over a control.

OnMouseOut:

Occurs when the user move mouse pointer over a control.

OnKeyUp:

Occurs when user release a pressed key.

OnSelect:

Occurs when the User selects a portion of a text in a user control.

OnFocus:

Occurs when a control receive focus.

OnBlur:

Occurs when a focus leaves controls.

OnAbort:

Occurs when user cancels image download.

OnError:

Occurs when an image can’t be downloaded

Onload:

Occurs when a new page finishes downloading.

OnUnLoad:

Occurs when a page is unloaded(This typically occurs when a new url has been entered_

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Authentication and authorization in asp.net

Authentication is the process that determines the identity of a user after a user has been authenticated, a developer can determine if the identified use has authorization to proceed.

Authorization is the process of determining whether an authenticated user is permitted access to other any part of application or access to specific data view that application provides.

There are three types of authentication method is provided by the asp.net users.

1. Windows Authentication –Basic, Digest .
2. Forms Authentication.
3. Passport and integrated authentication.

Windows Authentication:

Windows authentication is used together with IIS authentication. When IIs Authentication is complete,ASP.NET uses the authenticated identity to authorize access. This is default settings.

Forms Authentication:

In forms authentication request that are no authenticated are redirect to an html form using HTTP client side redirection. The user provides his login information and submits the form. If application the request, the system issues a form that contains credentials or a key or a identity

Passport Authentication:

It is a centralized authentication service provided by Microsoft that offers single login and core profile services for member sites. This mode of authentication was de-emphasized by Microsoft at the end of 2004 year.

How to set authentication in web.config:

You can set the authentication mode in web.config as follows.

<Authentication Mode=”WindowsFormsPassportNone”></Authentication>

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