DateTime在当前上下文中不存在 [英] DateTime does not exist in the current context

问题描述

我有以下课程

using System;
using System.Globalization;

namespace GenericSomething
{
    public class Specific : Generic
    {
        public override bool DoSomething(string date)
        {
            DateTime newDate = DateTime.ParseExact(date, "yyyyMMdd", CultureInfo.InvariantCulture);
            if (newDate.Date == DateTime.Now.Date)
                return true;
            else
                return false;
        } 
    }
}

当我调试并在DateTime.Now.Date上使用添加手表"时，我得到了

When I'm debugging and i use "Add watch" on DateTime.Now.Date, i get

"DateTime在当前上下文中不存在."

"DateTime does not exist in the current context."

即使日期相同，条件也永远不会得到满足.

And the condition is never satisfied even if the dates are the same.

为什么我要包含系统?

推荐答案

以下是我看到的一些内容；

Here a few things I saw;

• 您可能需要在项目中添加 mscorlib.dll 作为参考.
• 您不能与 DateTime ( newDate )和 int ( DateTime.Now.Day )进行比较使用 == 运算符.您可能需要改用 newDate == DateTime.Now .
• return 语句后，您缺少分号(; ).
• 您需要添加 System.Globalization 名称空间，用于使用 CultureInfo 类.

• You might be need to add mscorlib.dll as a reference in your project.
• You can't compare with DateTime (newDate) and int (DateTime.Now.Day) with == operator. You might need to use newDate == DateTime.Now instead.
• You are missing semi-colon (;) after your return statements.
• You need to add System.Globalization namespace for using CultureInfo class.

这篇关于DateTime在当前上下文中不存在的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！