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Convert.ToDouble Method (Boolean)

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

Namespace:  System
Assemblies:   System.Runtime.Extensions (in System.Runtime.Extensions.dll)
  mscorlib (in mscorlib.dll)

public static double ToDouble(
	bool value
)

Parameters

value
Type: System.Boolean

The Boolean value to convert.

Return Value

Type: System.Double
The number 1 if value is true; otherwise, 0.

The following example converts a Boolean value to a Double 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);
		}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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