asp.net - Accent insensitive searching in RadComboBox -

i'm relatively new using asp webforms , telerik, i'm looking way allows me type special characters (é, ù, à, ...) in radcombobox.

lets have name in objectdatasource called "rené somebody". need able find him searching "rene" , "rené", far no luck.

in application managed on radgrid filters, same solution doesn't work radcombobox far know.

the solution used in radgrid: http://www.telerik.com/forums/accent-insensitive-filtering-filtering-on-a-different-column#ys1qt8p1u0-crpfnfjvdza

i have no access backend components demo linked contains frontend code , looks can hack in there. looks control may both client-server , client-side only. client-side hacks looks kind of complicated , invloves non-public api (_oninputchange) client-server case (which case) doc on client side of radcombobox object mentions requestitems method hacking reasonably future safe:

var hackradcomboboxfilter = function (combobox, filterprocessingfunction) {     var oldrequestitems = combobox.requestitems;      combobox.requestitems = function() {         var args = array.prototype.slice.call(arguments);         // requestitems has several arguments text seems         // first one, let's modify , call original method         var origfilter = args[0];         args[0] = filterprocessingfunction(origfilter);         oldrequestitems.apply(this, args);     } }; 

unfortunately don't know built-in way deal accents in js can hack simple here well:

var accents = 'ÀÁÂÃÄÅàáâãäåÒÓÔÕÕÖØòóôõöøÈÉÊËèéêëðÇçÐÌÍÎÏìíîïÙÚÛÜùúûüÑñŠšŸÿýŽž'; var mappedaccents = "aaaaaaaaaaaaoooooooooooooeeeeeeeeeccdiiiiiiiiuuuuuuuunnssyyyzz"; var removeaccents = function (origstr) {     var components = [];     var len = origstr.length;     var afterlastaccent = 0;     (var = 0; < len; i++) {         var mappos = accents.indexof(origstr[i]);         if (mappos != -1) {             components.push(origstr.substr(afterlastaccent, - afterlastaccent) + mappedaccents[mappos]);             afterlastaccent = + 1;         }     }     if (afterlastaccent < len)         components.push(origstr.substr(afterlastaccent, len - afterlastaccent));     return components.join(''); }; 

so can combine in this:

// in real app want // var targetcombobox = $find("<%= radcombobox1.clientid %>"); // test let's hack first combobox on page var targetcombobox = telerik.web.ui.radcombobox.comboboxes[0]; hackradcomboboxfilter(targetcombobox, removeaccents); 

or if want modify comboboxes on page, can change prototype using same trick:

hackradcomboboxfilter(telerik.web.ui.radcombobox.prototype, removeaccents)