How to use Int64 in C#

问题

The question is easy! How do you represent a 64 bit int in C#?

回答1:

64 bit int is long

回答2:

System.Int64 is the .net type, in C# it's also called long

回答3:

A signed 64 bit integer is long, an unsigned is ulong.

The corresponding types in the framwwork are System.Int64 and System.UInt64, respectively.

Example:

long bigNumber = 9223372036854775807;

回答4:

By using the long data type, or ulong for unsigned.

Table of Integral C# Types

来源：https://stackoverflow.com/questions/3845205/how-to-use-int64-in-c-sharp