Convert.ToBoolean Method (Double)


Converts the value of the specified double-precision floating-point number to an equivalent Boolean value.

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

public static bool ToBoolean(
	double value


Type: System.Double

The double-precision floating-point number to convert.

Return Value

Type: System.Boolean

true if value is not zero; otherwise, false.

The following example converts a Boolean to a Double and a Double to a Boolean value.

public void ConvertDoubleBool(double doubleVal) {
	bool	boolVal;
	// Double to bool conversion cannot overflow.
	boolVal = System.Convert.ToBoolean(doubleVal);
	System.Console.WriteLine("{0} as a Boolean is: {1}.",
		doubleVal, boolVal);

	// bool to double conversion cannot overflow.
	doubleVal = System.Convert.ToDouble(boolVal);
	System.Console.WriteLine("{0} as a double is: {1}.",
		boolVal, doubleVal);

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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