Filter DataView based on multiple fields in c#

FilterDataView.RowFilter = "name like '%abjan%' and city like '%new york%'"

StringBuilder sb = new StringBuilder();

    if (tb1.Text.Length > 0)
    {
       sb.Append("name like '%" + tb1.Text + "%'");
    }

    if (tb2.Text.Length > 0)
    {
       if(sb.Length > 0)
       {
           sb.Append(" and ");
       }

       sb.Append("city like '%" + tb2.Text + "%'");
    }
    //.... and so on...

    FilterDataView.RowFilter = sb.ToString();