Explicit Conversion (BigInteger to UInt16)

BigInteger Narrowing Conversion (BigInteger to UInt16)

 
clsCompliantAlternativeT:System.Int32

Defines an explicit conversion of a BigInteger object to an unsigned 16-bit integer value.

This API is not CLS-compliant.

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

Public Shared Narrowing Operator CType (
	value As BigInteger
) As UShort

Parameters

value
Type: System.Numerics.BigInteger

The value to convert to an unsigned 16-bit integer.

Return Value

Type: System.UInt16

An object that contains the value of the value parameter

Exception Condition
OverflowException

value is less than UInt16.MinValue.

-or-

value is greater than UInt16.MaxValue.

The overloads of the Narrowing(Decimal to BigInteger) method define the types to which or from which a BigInteger object can be converted. Language compilers do not perform this conversion automatically because it can involve data loss. Instead, they perform the conversion only if a casting operator (in C#) or a conversion function (such as CType or CUShort in Visual Basic) is used. Otherwise, they display a compiler error.

Because this operation defines a narrowing conversion, it can throw an OverflowException at run time if the BigInteger value is outside the range of the UInt16 data type. There is no loss of precision in the resulting UInt16 value if the conversion is successful.

The following example illustrates the conversion of BigInteger values to UInt16 values. It also handles an OverflowException that is thrown because the BigInteger value is outside the range of the UInt16 data type.

' BigInteger to UInt16 conversion.
Dim goodUShort As BigInteger = 20000
Dim badUShort As BigInteger = 66000

Dim uShortFromBigInteger As UShort

' Convert using CType function.
uShortFromBigInteger = CType(goodUShort, UShort)
Console.WriteLine(uShortFromBigInteger)
' Convert using CUShort function.
uShortFromBigInteger = CUShort(goodUShort)
Console.WriteLine(uShortFromBigInteger)

' Handle conversion that should result in overflow.
Try
   uShortFromBigInteger = CType(badUShort, UShort)
   Console.WriteLine(uShortFromBigInteger)
Catch e As OverflowException
   Console.WriteLine("Unable to convert {0}:{1}   {2}", _
                     badUShort, vbCrLf, e.Message)
End Try
Console.WriteLine()

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 4.0
Windows Phone
Available since 8.1
Return to top
Show:
© 2016 Microsoft