publisher O'Reilly, Programming C#, 3rd Edition,

1. Programming C#, 3rd Edition Introduction (part 1) 寶來 資工部 簡伯松 PoSung Chien (Poisson)

5. Arithmetic operators ( 算數運算 ) Operator name Syntax Overloadable Basic assignment a = b No Addition a + b Yes Subtraction a - b Yes Unary plus (integer promotion) + a Yes Unary minus (additive inverse) - a Yes Multiplication a * b Yes Division a / b Yes Modulo (remainder) a % b Yes Increment ++ a, a ++ Yes Decrement -- a, a -- Yes

6. Comparison operators / Relational operators ( 比較運算 ) Operator name Syntax Overloadable Equal to a == b Yes Not equal to a != b Yes Greater than a > b Yes Less than a < b Yes Greater than or equal to a >= b Yes Less than or equal to a <= b Yes

7. Logical operators ( 邏輯運算 ) Operator name Syntax Overloadable Logical negation (NOT) ! a Yes Logical AND a && b Yes Logical OR a || b Yes

8. Bitwise operators ( 位元運算 ) Operator name Syntax Overloadable Bitwise NOT ~ a Yes Bitwise AND a & b Yes Bitwise OR a | b Yes Bitwise XOR a ^ b Yes Bitwise left shift a << b Yes Bitwise right shift a >> b Yes

9. Compound-assignment operators ( 複合賦值 ) Operator name Syntax Overloadable Addition assignment a += b Yes Subtraction assignment a -= b Yes Multiplication assignment a *= b Yes Division assignment a /= b Yes Modulo assignment a %= b Yes Bitwise AND assignment a &= b Yes Bitwise OR assignment a |= b Yes Bitwise XOR assignment a ^= b Yes Bitwise left shift assignment a <<= b Yes Bitwise right shift assignment a >>= b Yes

10. Member and pointer operators ( 成員及指標 ) Operator name Syntax Overloadable Array subscript a [ b ] Yes Indirection (&quot;variable pointed to by a &quot;) * a No Reference (&quot;address of a &quot;) & a No Member b of object pointed to by a (unsafe) a -> b No Member b of object a a . b No Member pointed to by b of object pointed to by a (unsafe) a ->* b No Member pointed to by b of object a (unsafe) a .* b No

11. Other operators ( 其它 ) Operator name Syntax Overloadable Function call See Function object . a ( a1, a2 ) Yes is operator object is string No True / False true, false Yes Ternary conditional a ? b : c No Size-of sizeof (a) sizeof ( type ) No Type identification typeof (a) typeof ( type ) No Cast (implicit, explicit) ( type ) a Yes Allocate storage new type No

31. Performance of reading File

32. Reading or Writing Class Use Stream Abstract class that supports reading and writing bytes. BinaryReader/ BinaryWriter Read and write encoded strings and primitive datatypes to and from streams. File , FileInfo , Directory , DirectoryInfo Provide implementations for the abstract FileSystemInfo classes, including creating, moving, renaming, and deleting files and directories. FileStream For reading to and from File objects; supports random access to files. Opens files synchronously by default; supports asynchronous file access. TextReader , T ex tWriter , StringReader , S t ringWriter TextReader and TextWriter are abstract classes designed for Unicode character I/O. StringReader and StringWriter write to and from strings, allowing your input and output to be either a stream or a string.

33. Reading or Writing (cont.) Class Use BufferedStream A stream that adds buffering to another stream such as a NetworkStream . Note that FileStream has buffering built in. BufferedStreams can improve performance of the stream to which they are attached. MemoryStream A nonbuffered stream whose encapsulated data is directly accessible in memory. A MemoryStream has no backing store, and is most useful as a temporary buffer. NetworkStream A stream over a network connection.

40. Thanks for attention