Autocompletion list changed when mutiple use use system

See more:

C#

ASP.NET

Ajax

auto-complete

in my web page i use auto completion for Medicine text box.when user enter value which is not in the listed item it will enter to database and added to List.Medicine list for different for different user say doctype1,doctype2 . when two type of doctor login to the system and when doctype2 added a new medicine name List changed and it will be appear in medicine list of doctype 1 also since i have used a static string array for holding list.how can i use this Autocompletion method with out this conflict. ie i want to display different item for different user using auto completion.auto completion use static method so i have to use static variable



static string[]

MedicineList;

<pre lang="cs">[System.Web.Services.WebMethodAttribute(), System.Web.Script.Services.ScriptMethodAttribute()]
   public static string[] GetCompletionList3(string prefixText, int count, string contextKey)
   {
       return (from m in MedicineList where m.StartsWith(prefixText, StringComparison.CurrentCultureIgnoreCase) select m).Take(count).ToArray();

   }</pre>

Plz Help...........................