C#中OADate和DateTime相互转换

OADateToDateTime.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace Web.EChart {
    public partial class OADateToDateTime : System.Web.UI.Page {
        protected void Page_Load(object sender, EventArgs e) {
            if (!Page.IsPostBack) {
                if (string.IsNullOrEmpty(oadate.Text)) {
                    oadate.Text = DateTime.Now.ToOADate().ToString();
                }
            }
            
        }

        protected void Transform_Click(object sender, EventArgs e) {
            if (!string.IsNullOrEmpty(oadate.Text)) {
                result.Text=DateTime.FromOADate(double.Parse(oadate.Text)).ToString();

            } else if(!string.IsNullOrEmpty(result.Text)) {
                oadate.Text = Convert.ToDateTime(result.Text).ToOADate().ToString();
            }
        }
    }
}using System;
using