asp.net mvc - Check if the default value in the form has changed -

i have edit form has label , current values in textbox, want check if values in form has been changed when form submitted. here form

<fieldset>     <legend>module <small>edit</small></legend>      @using (html.beginform("edit", "module"))     {         @html.validationsummary(true)         @html.hiddenfor(m=>m.id)         for(var = 0; < model.properties.count(); i++)         {             <label class="label">@model.properties[i].name</label>             <div class="input-block-level">@html.textboxfor(model => model.properties[i].value, new { @value = model.properties[i].value })</div>         }           <div class="form-actions" id="buttons">         <button type="submit" class="btn btn-primary" id="submit">save changes</button>         @html.actionlink("cancel", "modulelist", null, new { @class = "btn " })     </div>      } </fieldset> 

this results

how can check if form has been changed? httppost method of controller this

[httppost] public actionresult edit(editmodule module) {     if (modelstate.isvalid)     {           _repository.savemoduleedits(module);          information("module edited!");         return redirecttoaction("modulelist", "module", new {area = "hardware"});     }     error("edit unsuccessful, if problem persists please contact admin!");     return redirecttoaction("modulelist", "module", new { area = "hardware" });  } 

}

it straight forward on client side if using knockout. here article describes how use knockout change tracking. article uses knockout add-on called kolite make simpler.