Convert.ToInt64 Method (Object, IFormatProvider)
July 28, 2014
Converts the value of the specified Object to a 64-bit signed integer using the specified culture-specific formatting information.
Assembly: mscorlib (in mscorlib.dll)
Return ValueType: System.Int64
A 64-bit signed integer equivalent to the value of value, or zero if value is null.
The return value is the result of invoking the IConvertible.ToInt64 method of the underlying type of value.
provider enables the user to specify culture-specific conversion information about the contents of value. For example, if value is a String that represents a number, provider could supply culture-specific information about the notation used to represent that number.
The base types ignore provider; however, it is honored if value is a user-defined type that implements the IConvertible interface.