Export (0) Print
Expand All

Convert.ToBoolean Method (UInt64)

Converts the value of the specified 64-bit unsigned integer to an equivalent Boolean value.

This API is not CLS-compliant. 

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

[CLSCompliantAttribute(false)]
public static bool ToBoolean(
	ulong value
)

Parameters

value
Type: System.UInt64

The 64-bit unsigned integer to convert.

Return Value

Type: System.Boolean
true if value is not zero; otherwise, false.

The following example converts an array of UInt64 values to Boolean values.

ulong[] numbers = { UInt64.MinValue, 6121, 403890774, UInt64.MaxValue };
bool result;

foreach (ulong number in numbers)
{
   result = Convert.ToBoolean(number);                                 
   Console.WriteLine("{0,-26:N0}  -->  {1}", number, result);
}
// The example displays the following output: 
//       0                           -->  False 
//       6,121                       -->  True 
//       403,890,774                 -->  True 
//       18,446,744,073,709,551,615  -->  True

.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
Show:
© 2015 Microsoft