从字符串更改为double并完成减法 [英] Change from string to double and complete the subtraction

问题描述

如何从字符串更改为双倍并完成减法？

 localhour = Hidden1.Value.ToString 
 UTChour = DateTime.UtcNow.ToString（  HH）
 localTimeZone =  CDbl （localhour） -   CDbl （UTChour）

Hidden1来自Javascript脚本：

 < ;   script     type  < span class =code-keyword> =  text / javascript >  
 var localTime = new Date（）; 
 var hours = localTime.getHours（）; 
 document.getElementById（<％ = Hidden1.ClientID ％> ）。价值=小时; 
 <   / script  >  

< input id =Hidden1type =hiddenrunat =server/>

解决方案

0）不要对UtcNow进行ToString，只需访问Hour属性。

1）为什么要ToStringing Hidden1.Value？它是什么类型的？

2）你为什么要这样做？你想要获得UTC偏移吗？

这是我的解决方案：



-JavaScript Code

 <   script     type   =  text / javascript  >  
  var  localTime =  new  日期（）; 
  var  h = localTime.getHours（）; 
  document  .getElementById（ <％ = Hidden1.ClientID％>）。value = h; 
 <   /   script  >  

-HTML

< pre lang =HTML> < asp：hiddenfield id = Hidden1 value = 0 runat = server xmlns：asp = ＃unknown / >

-Behind Code for C＃

  string  localHour = Hidden1.Value.ToString（）; 
  string  UTChour = DateTime.UtcNow.ToString（  HH）; 
  int  diffTime = Convert.ToInt32（localHour） -  Convert.ToInt32（UTChour）; 

希望它会对你有所帮助。



上帝保佑。

试试这个：

 使用系统; 
 
  public   class 计划
 {
  public   static   void  Main（）
 {
  int  UTChour = DateTime.UtcNow.Hour; 
  int  localhour = DateTime.Now.Hour; 
  int  hourDiff = localhour  -  UTChour; 
 Console.WriteLine（hourDiff）; 
} 
} 

参考更多： DateTime.UtcNow Property [ ^ ]

How do you Change from string to double and complete the subtraction?

localhour = Hidden1.Value.ToString
       UTChour = DateTime.UtcNow.ToString("HH")
       localTimeZone = CDbl(localhour) - CDbl(UTChour)

Hidden1 is coming from a Javascript script:

<script type="text/javascript">
        var localTime = new Date();
        var hours = localTime.getHours();
        document.getElementById("<%=Hidden1.ClientID%>").value = hours;
    </script>

<input id="Hidden1" type="hidden" runat="server" />

解决方案

0) Don't ToString the UtcNow, just access the Hour property.
1) Why are you ToStringing Hidden1.Value ? What type is it?
2) Why are you trying to do this? Are you trying to get the UTC offset?

this is my solution:

-JavaScript Code

<script type="text/javascript">
        var localTime = new Date();
        var h = localTime.getHours();
        document.getElementById("<%=Hidden1.ClientID%>").value = h;
</script>

-HTML

<asp:hiddenfield id="Hidden1" value="0" runat="server" xmlns:asp="#unknown" />

-Behind Code for C#

string localHour = Hidden1.Value.ToString();
string UTChour = DateTime.UtcNow.ToString("HH");
int diffTime = Convert.ToInt32(localHour) - Convert.ToInt32(UTChour);

Hope it will help you.,

God Bless.

Try this:

using System;

public class Program
{
    public static void Main()
    {
        int UTChour = DateTime.UtcNow.Hour;
        int localhour = DateTime.Now.Hour;
        int hourDiff = localhour - UTChour;
        Console.WriteLine(hourDiff);
    }
}

Refer more: DateTime.UtcNow Property[^]

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