Export (0) Print
Expand All

Convert.ToBoolean Method (DateTime)

Calling this method always throws InvalidCastException.

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

public static bool ToBoolean(
	DateTime value


Type: System.DateTime
The date and time value to convert.

Return Value

Type: System.Boolean
This conversion is not supported. No value is returned.


This conversion is not supported.

The following example demonstrates that an attempt to convert a DateTime value to a Boolean type throws InvalidCastException.

		public void ConvertBoolean() {
			const int year			= 1979;
			const int month			= 7;   
			const int day			= 28;
			const int hour			= 13;
			const int minute		= 26;
			const int second		= 15;
			const int millisecond	= 53;

			DateTime dateTime = new DateTime(year, month, day, hour,
										minute, second, millisecond);
			bool boolVal;

			// System.InvalidCastException is always thrown.
			try {
				boolVal = System.Convert.ToBoolean(dateTime);
			catch (System.InvalidCastException) {
				System.Console.WriteLine("Conversion from DateTime to " +
					"Boolean is not supported by the .NET Framework.");

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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.

Community Additions

© 2015 Microsoft