need hlep with hashtables inserting value in it

   Hashtable Criteria = (Hashtable)Session["Criteria"];

i have  acondition  in

switch (HType.Value)             {

case "A":                     if (H_FilterValue.Value != string.Empty)                     {                         Criteria.Add(H_Name.Value, " LIKE '" + H_FilterValue.Value + "%'");                     }                     break;

i have issue with  uisng quotes in this

here i get it as CITY,, LIKE 'M,%'  but shld be CITY  LIKE 'M%'