On the ASP. NET login page, how can I achieve automatic jump of text box focus and submit a form through the Enter key?

This article describes how to automatically redirect the focus of a text box on the ASP. Net Logon page and submit a form using the Enter key.
Required JavascriptCode:

< Script Language = "JavaScript" >

Ns4 = (Document. layers) ?   True : False ;

Function Checkenter (event, element)

{

VaR Code =   0 ;

If (Ns4)

Code = Event. Which;

Else

Code = Event. keycode;

If (Code = 13 )

{

If (Element. Name = 'Tbusername ') // Tbusername-name of the user name text box

{

Document. frmlogin. tbpassword. Focus ();//Frmlogin-form name, tbpassword-name of the Password text bar

}

If (Element. Name = 'Tbpassword ')

{

// Document. frmlogin. Submit (); Submit in this way, the Asp.net page will flash, but it is not actually submitted

// The following code can be used for submission. I checked the source file from the page generated by Asp.net and copied it.

If ( Typeof (Page_clientvalidate) ! = ' Function ' | Page_clientvalidate () _ dopostback ('lbllogin ','');

}

}

}

 

</ Script >



I put the code in a loginscript. js file, and then add the following code to the login. CS file to implement this function:

Tbusername. Attributes. Add ("onkeypress", "checkenter (event, this )");

Tbpassword. Attributes. Add ("onkeypress", "checkenter (event, this )");

System. Io. streamreader sr = new system. Io. streamreader (mappath ("script") + "\ loginscript. js ");

This. registerclientscriptblock ("loginscript", Sr. readtoend ());

Sr. Close ();