help with if statement in c# .net

im stumped on this

the code below filters on specialty. i need to add so that a 2nd specialty select can be made and the search will filter on both

[code]

if (Server.HtmlEncode(arr1[loop1])=="specialty" )
       sWhere += "specialty  LIKE '%" + (arr2[loop2])+ "%' AND ";
      

[/code]