The Application of bitwise operations in actual projects ensures that you can learn something!

If you still do not understand bit operations, please view myArticle: Bit operations that we forget together in those years!

The following is a bit operation application I learned in this project! It mainly implements three notifications:

1. Stick

2. Set as Homepage

3. Set "TOP" + "as Homepage" at the same time"

Effect

To facilitate bitwise operations, we can directly perform the following enumeration definitions, which are defined to the power of 2 and should be their values very special:

Binary Value

1 1
2 10
4 100
8 1000
16 10000
32 100000
64 1000000
128 10000000

  ///   <Summary>      ///  Notification Type  ///  </Summary>      Public   Enum  Noticetype {  ///   <Summary>          ///  Normal  ///   </Summary> [Description ( "  Normal  "  )] Normal = 1 ,  ///   <Summary>          ///  PIN to top  ///   </Summary> [Description ( "  PIN to top  "  )] Top = 2  ,  ///   <Summary>          /// Set Homepage  ///   </Summary> [Description ( "  Set Homepage  "  )] Home = 4  ,} 

We can easily accept parameters for bitwise operations,CodeAs follows:

         ///   <Summary>          ///  Top and set as Homepage  ///  </Summary>          ///   <Param name = "ID"> </param>          ///   <Returns> </returns>  [Role]  Public Actionresult workshop_noticeset ( Int ID, Int  Typeflag ){  Bool Res = False  ; Workshop_notice entity = Workshopmanager. getworkshop_notice (I => I. workshopnoticeid = ID );  If (Entity! = Null  ){  Switch  (Noticetype) typeflag ){  Case  Noticetype. Home:  If (Entity. typeflag &( Int ) Noticetype. Home)> 0 ) Entity. typeflag = Entity. typeflag ^ ( Int  ) Noticetype. Home; // unpin  Else  Entity. typeflag = Entity. typeflag | ( Int  ) Noticetype. Home; // top  Break  ;  Case  Noticetype. Top:  If (Entity. typeflag &(Int ) Noticetype. Top)> 0  ) Entity. typeflag = Entity. typeflag ^ ( Int  ) Noticetype. Top; // unsets it as the homepage.  Else  Entity. typeflag = Entity. typeflag | ( Int  ) Noticetype. Top; // set it to the homepage  Break  ;}  If (Workshopmanager. editworkshop_notice (I => New  Workshop_notice {typeflag = Entity. typeflag, workshopnoticeid = Entity. workshopnoticeid,}). iscomplete) res = True  ;}  Return  Content (res. tostring ());} 

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