android JDBC not work

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Mobile

Android

hi everyone
i have this code working with java and many people used under android is work
but with me not work
and show message
no suitable driver

public void dbConnect(String db_connect_string,
               String db_userid,
               String db_password)
      {

        String x="  ";
         try {
             try{
                 Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
             }
             catch (Exception e) {
           x +="  1 ";
           }
             x+= "  befor cpm ";
            Connection conn = DriverManager.getConnection(db_connect_string,
                     db_userid, db_password);
            x+= "  conne ";
            System.out.println("connected");
            Statement statement = conn.createStatement();
            String queryString = "select * from A_Users";
            Cursor rs = (Cursor) statement.executeQuery(queryString);

            while (rs.moveToNext()) {
              // System.out.println();
               x+=rs.getString(2);
            }
            conn.close();
         } catch (SQLException e) {
            e.printStackTrace();
            x +=e.getMessage() + "  mostafa";
         }

         EditText tex= (EditText) findViewById(R.id.editText1);
         tex.setText(x);


      }

what is a problem im using eclipse with last version
thanks for any help

[Edit]Code block added[/Edit]