$("#_property_price").on("keypress", function(event) {

      var englishAlphabetDigitsAndWhiteSpace = /[A-Za-z0-9 ]/g;
    var key = String.fromCharCode(event.which);

  alert(event.keyCode);

    if (event.keyCode == 8 || event.keyCode == 37 || event.keyCode == 39 || englishAlphabetDigitsAndWhiteSpace.test(key)) {
        return true;
    }

    return false;
});

$('#mytextbox').on("paste",function(e)
{
    e.preventDefault();
});