基于asp.net.C#一个对日期时间（格式化和转换）的静态类

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

/// <summary>
/// LikekyDateTime 的摘要说明
/// </summary>
public class LikekyDateTime
{
public LikekyDateTime()
{
//
// TODO: 在此处添加构造函数逻辑
//
}

    public string getLongDateTimePara(string y_m_dFormat,string h_min_sFormat)
    {       
        string y = DateTime.Now.Year.ToString();
        string m = DateTime.Now.Month.ToString();
        string d = DateTime.Now.Day.ToString();
        if (m.Length == 1)
        {
            m = "0" + m;