Convert.ToInt64 Method (Decimal)
Converts the value of the specified Decimal number to an equivalent 64-bit signed integer.
Assembly: mscorlib (in mscorlib.dll)
Return ValueType: System.Int64
value rounded to the nearest 64-bit signed integer. If value is halfway between two whole numbers, the even number is returned; that is, 4.5 is converted to 4, and 5.5 is converted to 6.