The common concept of the Toolbox is set of controls placed together in a box. Toolbox is one of the Window which can be easily to handle.The purpose of the Toolbox is a single click operations and in other words,Toolbox is the shortcuts of all the controls

Visual Studio .Net provides controls for two kind of applications like windows and web applications

in Visual Studio,you are able to access the Toolbox as:

• Drag the Toolbox.
• Dock the Toolbox at the edge of a parent frame.
• Pin a docked Toolbox open, or set it to hide itself.

• To open the Toolbox -View --> Toolbox.
• To conceal the Toolbox -Window --> Hide.
• To Autohide the Toolbox -Window --> AutoHide.
• To move the Toolbox -Window --> Floating and move other locations.
• To restore all default tabs of Toolbox -on Toolbox, Rightclick --> Reset Toolbox.

in Visual Studio Toolbox,You can add items manually such as controls which can be available from your computer, a network share, or on the Web

To add items from your computer or network

• Tools --> Toolbox Items.
• Select Browse, now a dialog box appears
• In the My Places Bar, select My Computer to browse for items installed on your computer drives.
  (or) In Look in, select My Network Places to browse for items located on a network share.
• To move the Toolbox -Window --> Floating and move other locations.
• Click OK.

ASP.NET Web server controls serves as ASP.NET objects of the Web pages that run when the page is requested and render to a browser. Most of the Web server controls are similar to the HTML elements, such as radiobuttons and text boxes. Moreover, Other controls such as a calendar controls and Gridview controls can manage data connections. This articls describes the available Web Server Controls and how to work with them.

The Web and HTML controls can be categorized as

• Standard Controls
• Data Controls
• Validation Controls
• Navigation Control
• Login Controls
• HTML Controls
• User Controls
• Web Parts Controls

the following screenshots represents the Visual Studio Toolbox

Dotnet enables the user who can create the Web Pages through the following controls:

• HTML Server Control - HTML elements exposed to the server so you can program them. HTML server controls expose an object model that maps very closely to the HTML elements that they render.
• Web server controls - Controls with more built-in features than HTML server controls. Web server controls include not only form controls such as buttons and text boxes, but also special-purpose controls such as a calendar, menus, and a tree view control. Web server controls are more abstract than HTML server controls in that their object model does not necessarily reflect HTML syntax.
• Validation controls - Controls that incorporate logic to enable you to what users enter for input controls such as the TextBox control. Validation controls enable 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, and so on. For more information, see Validation ASP.NET Controls.
• User controls - Controls that you create as ASP.NET Web pages. You can embed ASP.NET user controls in other ASP.NET Web pages, which is an easy way to create toolbars and other reusable elements. For more information, see ASP.NET User Controls.