Question

我想将当前日期返回到我的事件记录器，我试过这个：

public class LogDate
{
    protected DateTime localDate { get; set; }

    public LogDate()
    {
        localDate = DateTime.Now;

    }
}

public class Eventlog : LogDate
{
    public void logEvent(string answer)
    {

       this.localDate = new DateTime();


        try
        {
            string sSource;
            string sLog;
            string sEvent;

            sSource = "dotNET Sample App";
            sLog = "filmdatabase";
            sEvent = this.localDate + answer;

不知何故，当我尝试这个时，它返回1-1-0001 00:00:00。而不是实际的时间。

Answer 1

您再次为新this.localDate指定DateTime：

this.localDate = new DateTime();

1-1-0001 00:00:00是new DateTime()的默认值。要解决此问题，请使用this.localDate，而无需使用new DateTime()重新分配。

public class Eventlog : LogDate
{
    public void logEvent(string answer)
    {

       //this.localDate = new DateTime(); //remove this    

        try
        {
            string sSource;
            string sLog;
            string sEvent;

            sSource = "dotNET Sample App";
            sLog = "filmdatabase";
            sEvent = this.localDate.ToString() + " " + answer; //use it directly as you have initialized that in your constructor

直接使用它，因为您始终在构造函数中初始化它：

public class LogDate
{
    protected DateTime localDate { get; set; }

    public LogDate()
    {
        localDate = DateTime.Now;

    }
}

Answer 2

您将localDate设置为新的默认值

this.localDate = new DateTime();

Datetime.utc在事件查看器

2 个答案: