C # example: serialized access class.

It may be my bad habits. It may also be that I think the best way for programmers to communicate is code, or that I am too confident that my code is easy to understand, or that the program I write is itself a work of art. So I just want to paste the Code:

 

The class is defined as follows:

Using system; <br/> using system. collections. generic; <br/> using system. LINQ; <br/> using system. text; <br/> using system. runtime. interopservices; </P> <p> namespace dlltest <br/> {<br/> [structlayout (layoutkind. explicit)] <br/> public class myclass <br/> {<br/> [fieldoffset (0)] <br/> private Double X = 0; <br/> [fieldoffset (8)] <br/> private Double Y = 0; <br/> [fieldoffset (16)] <br/> private Double Z = 0; <br/> [fieldoffset (24)] <br/> private int id = 0; </P> <p> Public Double X <br/>{< br/> get {return x ;}< br/> set {x = value ;} <br/>}</P> <p> Public Double Y <br/>{< br/> get {return y ;} <br/> set {Y = value ;} <br/>}</P> <p> Public Double Z <br/>{< br/> get {return Z ;} <br/> set {z = value ;} <br/>}</P> <p> Public int id <br/>{< br/> get {return ID ;} <br/> set {id = value ;}< br/>}</P> <p> Public myclass (double dx, double dy, double DZ, int NID) <br/>{< br/> X = DX; <br/> Y = Dy; <br/> Z = DZ; <br/> id = NID; <br/>}</P> <p> // a non-parameter constructor is required for deserialization. <br/> Public myclass () <br/>{< br/>}< br/>

 

An example of read/write operations is as follows:

 

Using system; <br/> using system. collections. generic; <br/> using system. LINQ; <br/> using system. text; <br/> using system. runtime. interopservices; <br/> using system. io; <br/> using dlltest; </P> <p> namespace serializetest <br/> {<br/> class Program <br/> {<br/> static void main (string [] ARGs) <br/>{</P> <p> console. readkey (); <br/>}</P> <p> Public static void writesample () <br/>{< br/> List <myclass> da TAS = new list <myclass> (); <br/> datas. addrange (New myclass [] {New myclass (1, 1, 1), new myclass (2, 2, 2, 2), new myclass (3, 3, 3, 3, 3)}); <br/> using (filestream FS = file. openwrite (@ "C:/position. bin ") <br/>{< br/> int size = marshal. sizeof (typeof (myclass); <br/> byte [] buffer = new byte [size]; <br/> intptr = marshal. allochglobal (size); <br/> foreach (myclass item in datas) <br/>{< br/> Marshal. structuretoptr (item, PTR, true); <br/> marshal. copy (PTR, buffer, 0, size); <br/> FS. write (buffer, 0, size); <br/>}< br/> marshal. freehglobal (PTR); <br/>}< br/> console. writeline ("Save complete. /R/npress any key to end program. "); <br/>}</P> <p> Public static void readsample () <br/>{< br/> List <myclass> datas = new list <myclass> (); <br/> int size = marshal. sizeof (typeof (myclass); <br/> Using (filestream FS = file. openread (@ "C:/position. bin") <br/>{< br/> If (FS. Length % size! = 0) <br/>{< br/> console. writeline ("file size not valid. maybe error when save file. "); <br/>}< br/> else <br/>{< br/> intptr = marshal. allochglobal (size); <br/> byte [] buffer = new byte [size]; <br/> while (FS. read (buffer, 0, size) = size) <br/>{< br/> marshal. copy (buffer, 0, PTR, size); <br/> myclass OBJ = marshal. ptrtostructure (PTR, typeof (myclass) as myclass; <br/> If (OBJ = NULL) <br/>{< br/> console. writeline ("File Load faild. "); <br/> break; <br/>}< br/> datas. add (OBJ); <br/>}</P> <p> // read complete <br/> datas. foreach (M => <br/>{< br/> console. writeline ("ID = {0} X = {1} y = {2} z = {3}", M. ID, M. x, M. y, M. z); <br/>}); <br/>}< br/> console. writeline ("press any exit program. "); <br/> console. readkey (); <br/>}</P> <p>