属性html控件

Question

<td class="ui-widget-header gvHeader ui-helper-hidden" style="width: 17%" runat="server" id="tdPack">
Pack :
</td>

I want to remove the class 'ui-helper-hidden' using C# code. How ?

Answer 1

assuming several things due to lack of details, you might try:

tdPack.CssClass = tdPack.CssClass.Replace("ui-widget-header", String.Empty);

or if that is HtmlTableCell than:

tdPack.Attributes["class"] =
       Attributes["class"].Replace("ui-widget-header", String.Empty);

Answer 2

first of all, you should retag your question!
then: provide more information!
then: i assume that ui-helper-hidden is added by a plugin - this means, that this is not the rendered source rather the computed sourced - you will not be able to change the class -attribute...
the crucial question: do you know the difference between server- and client-side?

you will have to use jquery or any other javascript (lib), to do sth like

$(document).ready(function () {
    var $cell = $('#yourControlId);
    // or
    var $cell = $('.ui-helper-hidden');
    $cell.removeClass('ui-helper-hidden');
});

another crucial question here:
if this is your code, why don't you leave the unwanted ui-helper-hidden -class out? your supported code shows, that you have the control over the code and there's no plugin or sth alike involved ...