In ASP.NET environment,This article describes you how to work with HTML File Control.In HTML environment, File is an object that represents a FileUpload in an HTML form. The FileUpload control in a HTML form contains all instance of an <input type="file"> tag.

The HtmlInputFile control can be used to uploading binary or text files from a browser client to the server. which was implemented and works with Microsoft Internet Explorer version 3.02 or Higher. HtmlInputFile controls requires the full path of the uploading file.for example ,"d:\Photos\img1.jpg" in the text box of the control.

There are several functions available to access the HTML File.some of its funtions are as follows,

• document.getElementById()
• document.getElementByName()

• id -Sets or returns the id of a File
• form -Returns a reference to the form that contains the File
• accessKey -Sets or returns the keyboard key to access a File
• alt -Sets or returns an alternate text to display if a browser does not support Files
• disabled -Sets or returns whether or not a File should be disabled
• tabIndex -Sets or returns the tab order for a File
• name -Sets or returns the name of a File
• type -Returns the type of form element a File is
• defaultvalue - Sets or returns the initial value of the FileUpload object
• value -Sets or returns the text that is displayed on the File
• title -Sets or returns an element's advisory title
• lang -Sets or returns the language code for an element
• dir -Sets or returns the direction of text
• className -Sets or returns the class attribute of an element

• blur() -Performs focus when leave from the control
• click() -Simulates a mouse-click on a File
• focus() -Performs focus when enter into the control

The following code snippets explains you the HTML File in the web form.

in .aspx.cs page,

in .aspx page,

• Input (Button)
• Input (Checkbox)
• Input (Hidden)
• Input (Password)
• Input (Radio)
• Input (Reset)
• Input (Submit)
• Input (Text)
• Text Area
• Table
• Image
• Select
• Div