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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 framework.");

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

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