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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 .NET Framework.");

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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