Connect static class to nonstatic

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C#

ASP.NET

<script type="text/javascript">
       function ShowCurrentTime() {
           var base64 = $('#colors_sketch')[0].toDataURL();
           $.ajax({

               type: "POST",
               url: "Dms_BOM.aspx/GetCurrentTime",
               data: '{name: "' + base64 + '" }',
               contentType: "application/json; charset=utf-8",
               dataType: "json",
               success: OnSuccess,
               failure: function (response) {
                   alert(response.d);
               }
           });
       }
       function OnSuccess(response) {
           alert(response.d);
       }
   </script>

[System.Web.Services.WebMethod]
   public static  string GetCurrentTime(string name)
   {
       FILLHOD(name);
       return "Base64 code :" + name ;
   }

protected void FILLHOD(string name)
  {


  }

i use ajax function pass data to code behind,from static method call a non static function for insert data to database but getting some error :An object reference is required for the nonstatic field, method,any ideas how to deal with this issue,and is that possible connect ajax function to non static function in c#?

What I have tried:

Nothing.