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Nullable.ToString Method

Note: This method is new in the .NET Framework version 2.0.

Returns the text representation of the value of the current Nullable object.

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

public override string ToString ()
public String ToString ()
public override function ToString () : String

Return Value

The text representation of the value of the current Nullable object if the HasValue property is true, or an empty string ("") if the HasValue property is false.

The ToString property returns the string yielded by calling the ToString property of the object returned by the Value property.

The following code example displays the value of the current Nullable object.

// This code example demonstrates the 
// Nullable<T>.ToString method.

using System;

class Sample 
    public static void Main() 
    DateTime? nullableDate;

// Display the current date and time.
    nullableDate = DateTime.Now;
    Display("1)", nullableDate);

// Assign null (Nothing in Visual Basic) to nullableDate, then 
// display its value.
    nullableDate = null;
    Display("2)", nullableDate);

// Display the text representation of a nullable DateTime.
    public static void Display(string title, DateTime? dspDT)
    string msg = dspDT.ToString();

    Console.Write("{0} ", title);
    if (String.IsNullOrEmpty(msg))
        Console.WriteLine("The nullable DateTime has no defined value.");
        Console.WriteLine("The current date and time is {0}.", msg);

This code example produces the following results:

1) The current date and time is 4/19/2005 8:28:14 PM.
2) The nullable DateTime has no defined value.


Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0

.NET Compact Framework

Supported in: 2.0

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