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Thursday, November 13, 2008

Submit form when user press enter key on dropdownlist box


Submit form when user press enter key on dropdownlist box


This function will help to submit form when user press enter key at dropdownlist box.


//if enter key pressed at DropDownList

function onEnterpress(e)
{
//define any varible
var KeyPress
//if which property of event object is supported
if(e && e.which)
{
e = e
//character code is contained in NN4's which property
KeyPress = e.which
}
else
{
e = event
KeyPress = e.keyCode
}
//13 is the key code of enter key
if(KeyPress == 13)
{
//frmLogin is the name of form
document.frmLogin.submit()
return false
}
else
{
return true
}
}

After this just add the event in your code file at pageLoad like is:

Your code file may be in VB.NET or C# so you may add even like this.


ddlDropDownList.Attributes.Add("onKeyPress", "javascript:onEnterpress(event);")
Event is the name of event pressed by user at keyBoard Key.
ddlDropDownList is the name of dropdown on which we want to add event.

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