通过添加天数确定日期

问题描述：

大家好

我想知道是否有人可以协助解决时间跨度问题.

我有一个带有今天日期(短日期)的文本框，另一个我想要添加天数(整数)的文本框，然后我希望能够计算添加天数后的日期.

任何帮助都将有所帮助，我知道我必须使用时间跨度，但是有没有更简单的方法.

cheers

Hi All

I was wondering if someone could possibly assist in a timespan issue.

I have a textbox with todays date (shortdate) and another textbox that i want to beable to add days (integer) and then i want to be able to work what the date will be after adding the number of days.

Any Help would be helpful, i know i have to use timespan, but is there an easier way.

cheers

答

使用AddDays.

Use AddDays.

Dim today As System.DateTime
Dim future As System.DateTime

today = System.DateTime.Now
future = today.AddDays(NumberOfDays)

MessageBox.Show(future)

那应该做.

您只需要提供天数即可.

That should do it.

You just have to provide the number of days.

请参见DateTime.Parse，int.Parse和DateTime.AddDays:
DateTime.AddDays: http://msdn.microsoft.com/en-us/library/system.datetime.adddays.aspx [ ^ ]

DateTime.Parse: http://msdn.microsoft.com/en-us/library/1k1skd40.aspx [^ ]

int.Parse: http://msdn.microsoft.com/en-us/library/system.int32.parse.aspx [ ^ ]

也许尝试这样的事情:-我知道C#，但是转换为VB应该相当简单；)

See DateTime.Parse, int.Parse and DateTime.AddDays:
DateTime.AddDays: http://msdn.microsoft.com/en-us/library/system.datetime.adddays.aspx[^]

DateTime.Parse: http://msdn.microsoft.com/en-us/library/1k1skd40.aspx[^]

int.Parse: http://msdn.microsoft.com/en-us/library/system.int32.parse.aspx[^]

Perhaps try something like this: - I know C# but it should be fairly simple to convert to VB ;)

TextBox DateBox;
TextBox DaysBox;

DateTime AddDays(string DateString, string DaysString)
{
    DateTime TheDate = DateTime.Parse(DateString);
    int Days = int.Parse(DaysString);
    
    return TheDate.AddDays((double)Days);
}

//Event method called by both DateBox text changed event and DaysBox text changed event.
void TextChanged(object sender, EventArgs e)
{
    DateTime Result = AddDays(DateBox.Text, DaysBox.Text);
    MessageBox.Show(Result.ToString());
}

希望这会有所帮助，

Ed:)

Hope this helps,

Ed :)

添加减法来自DateTime对象 [ ^ ]

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