ASP.NET - restriction in textbox control

Hi All,

  How to restrict those special characters (\,{,}) within javascript like

keychar == ";"

Help me to solve
thanks,
vadivukarasi

hi,

Try this way:

the same code already implemented

i want to include this symbols to be restricted in the above code   
   \  {  }

hi,

ok fine if you want to another idea for it so please use jquery.

Thanks,

one solution use this regular expression ^[-_,A-Za-z0-9]$

Hope will work !!

Thanks,

Hi  vadivu eagaraja  its working fine in all browsers.... 

Here i marked allowed events... here u can change ur keycodes....

function alpha_number(myfield, e, dec)
{
var key;
var keychar;


if (window.event)
   key = window.event.keyCode;
else if (e)
   key = e.which;
else
   return true;
keychar = String.fromCharCode(key);


// control keys
if ((key==null) || (key==0) || (key==8) || 
    (key==9) || (key==13) || (key==27) )
   return true;


// numbers
else if ((("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ .()&!@#$%^*_+=-|[];',./").indexOf(keychar) > -1))
   return true;


// decimal point jump
else if (dec && (keychar == "."))
   {
   myfield.form.elements[dec].focus();
   return false;
   }
else
   return false;
}



onkeypress="return alpha_number(this,event)"

thanks ahi  

hi go through this link

http://www.scriptingmaster.com/javascript/using-escape-codes-sequence.asp

U r always welcome vadivu...