Decimal Constructor (Int32[])
Initializes a new instance of Decimal to a decimal value represented in binary and contained in a specified array.
Assembly: mscorlib (in mscorlib.dll)
Parameters
 bits

Type:
System.Int32[]
An array of 32bit signed integers containing a representation of a decimal value.
Exception  Condition 

ArgumentNullException  bits is null. 
ArgumentException  The length of the bits is not 4. or The representation of the decimal value in bits is not valid. 
The binary representation of a Decimal number consists of a 1bit sign, a 96bit integer number, and a scaling factor used to divide the integer number and specify what portion of it is a decimal fraction. The scaling factor is implicitly the number 10, raised to an exponent ranging from 0 to 28.
bits is a fourelement long array of 32bit signed integers.
bits [0], bits [1], and bits [2] contain the low, middle, and high 32 bits of the 96bit integer number.
bits [3] contains the scale factor and sign, and consists of following parts:
Bits 0 to 15, the lower word, are unused and must be zero.
Bits 16 to 23 must contain an exponent between 0 and 28, which indicates the power of 10 to divide the integer number.
Bits 24 to 30 are unused and must be zero.
Bit 31 contains the sign; 0 meaning positive, and 1 meaning negative.
A numeric value might have several possible binary representations; all are equally valid and numerically equivalent. Note that the bit representation differentiates between negative and positive zero. These values are treated as being equal in all operations.
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1