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Nullable<T>::Value Property

Gets the value of the current Nullable<T> value.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public:
property T Value {
	T get ();
}

Property Value

Type: T
The value of the current Nullable<T> object if the HasValue property is true. An exception is thrown if the HasValue property is false.

ExceptionCondition
InvalidOperationException

The HasValue property is false.

The following code example returns the value of a Nullable<T> object if that object has a defined value; otherwise, a default value is returned.


using namespace System;

// Display the date and time. 
void Display(Nullable<DateTime> displayDateTime, String^ title)
{
    // If a value is defined for the displayDatetime argument, display its value; otherwise,  
    // display that no value is defined.
    Console::Write(title);
    if (displayDateTime.HasValue == true)
        Console::WriteLine("The date and time is {0:F}.", displayDateTime.Value);
    else
        Console::WriteLine("The date and time is not defined.");
}

void main()
{
    Nullable<DateTime> myNow;

    //  Assign the current date and time to myNow then display its value.
    myNow = Nullable<DateTime>(DateTime::Now);
    Display(myNow, L"1) ");

   //  Assign null to myNow then display its value.
    myNow = Nullable<DateTime>();
    Display(myNow, L"2) ");
}
/*
The example displays output similar to the following:
   1) The date and time is Tuesday, April 19, 2005 4:16:06 PM.
   2) The date and time is not defined.
*/


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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