code: public DataRow findRowIgnoreCase(int columnIndex, String value)
  	{
  		for (DataRow dataRow : dataRows)
  		{
  			String columnValue = (String) dataRow.getColumn(columnIndex);
  			if (value.equalsIgnoreCase(columnValue))
  			{
  				return dataRow;
  			}
  		}
  		return null;
  	}
docs: checks whether dataset contains the value given (ignoring the case)
  @param columnIndex
  @param value
  @return