Private Function HaveRowsColumnValue0(c As DataColumn) As Boolean
        Return mDataTable.Select(c.ColumnName & " Is Not Null").Count > 0
    End Function
 
    Private Function HaveRowsColumnValue1(c As DataColumn) As Boolean
        Return (From dr As DataRow In mDataTable.Rows Where Not IsDBNull(dr( _
          c))).Count > 0
    End Function
 
    Private Function HaveRowsColumnValue2(c As DataColumn) As Boolean
        Return mDataTable.Select("isnull(" & c.ColumnName & ",'xxxxx') =" & _
          "'xxxxx'").Count > 0
    End Function