C# DateTime.FromOADate()用法及代码示例

DateTime.FromOADate(Double)方法用于返回等于指定的OLE自动化日期的DateTime。

用法： public static DateTime FromOADate (double d);

Here, it takes an OLE Automation Date value.

返回值：此方法返回一个对象，该对象表示与d相同的日期和时间。

异常：如果日期不是有效的OLE Automation Date值，则此方法将提供ArgumentException。

以下示例程序旨在说明DateTime.FromOADate(Double)方法的用法：

示例1:

// C# program to demonstrate the 
// DateTime.FromOADate(Int64) Method 
using System; 
using System.Globalization; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
        try { 
  
            // converting 657435.0 OLE  
            // Automation Date value. 
            // into DateTime format 
            // using FromOADate() method 
            DateTime date2 = DateTime.FromOADate(657435.0); 
  
            // Display the date2 
            System.Console.WriteLine("DateTime "
                       + ": {0:y} {0:dd}",date2); 
                                       
        } 
  
        catch (ArgumentException e) { 
            Console.Write("Exception Thrown: "); 
            Console.Write("{0}", e.GetType(), e.Message); 
        } 
    } 
}

输出：

DateTime : 3699 December 28

示例2:对于ArgumentException

// C# program to demonstrate the 
// DateTime.FromOADate(Int64) Method 
using System; 
using System.Globalization; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
        try { 
  
            // converting 657435.0 OLE 
            // Automation Date value. 
            // into DateTime format 
            // using FromOADate() method 
            DateTime date2 = DateTime.FromOADate(-657435.0); 
  
            // Display the date2 
            System.Console.WriteLine("DateTime "
                      + ": {0:y} {0:dd}",date2); 
                                       
        } 
  
        catch (ArgumentException e)  
        { 
            Console.WriteLine("The date is not a valid "+ 
                           "OLE Automation Date value."); 
            Console.Write("Exception Thrown: "); 
            Console.Write("{0}", e.GetType(), e.Message); 
        } 
    } 
}

输出：

The date is not a valid OLE Automation Date value.
Exception Thrown: System.ArgumentException

参考：

https://docs.microsoft.com/en-us/dotnet/api/system.datetime.fromoadate?view=netframework-4.7.2

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注：本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 DateTime.FromOADate() Method in C#。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。