/// <summary>
/// 获得列信息
/// </summary>
/// <param name="lineNum"></param>
/// <param name="startRow"></param>
/// <param name="endRow"></param>
/// <returns></returns>
public List <string> GetColume(int colNum, int startRow = 0, int endRow = -1)
{
if (!IsValid())
{
return(null);
}
List <string> res = new List <string>();
List <string> allColData = MySQLManager.GetColumn(currentDataTypeName, colNum);
allColData.CopyTo(res, startRow, endRow);
return(res);
}