| 发表于：2007-03-16 17:18:10 楼主 |
using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.text;
using system.windows.forms;
using system.runtime.interopservices;
using system.runtime.serialization;
using system.io;
using system.runtime.serialization.formatters.binary;
namespace rtu_center
{
public struct rec
{
public string head;
public int x, y;
}
public partial class form1 : form
{
public form1（)
{
initializecomponent（);
}
private void listview1_selectedindexchanged（object sender, eventargs e)
{
}
private void display（string ss)
{
textbox3.appendtext（ "\n ");
textbox3.appendtext（ss);
}
public delegate void mydelegate（string astr);
public unsafe static byte[] struct2bytes（object obj)
{
int size = marshal.sizeof（obj);
byte[] bytes = new byte[size];
fixed （byte* pb = &bytes[0])
{
intptr ipt = new intptr（pb);
marshal.structuretoptr（obj, ipt, true);
//marshal.freehglobal（ipt);
}
return bytes;
}
public unsafe static object bytes2struct（byte[] b,object r)
{
fixed （byte* pb = &b[0])
{
r = marshal.ptrtostructure（new intptr（pb), r.gettype（));
//程序运行到此处第一次不会出去，第二次运行时候错误为：尝试读取或写入受保护的内存。这通常指示其他内存已损坏。
}
return r;
}
private void serialport1_datareceived（object sender, system.io.ports.serialdatareceivedeventargs e)
{
byte[] b=new byte[12];
serialport1.read（b, 0, 12);
rec r = new rec（);
r=（rec)bytes2struct（b,（object) r);
textbox3.invoke（new mydelegate（display), new object[] { r.head });
}
private void button3_click（object sender, eventargs e)
{
rec r = new rec（);
r.head = "$wad ";
r.x = 10;
r.y = 14;
byte[] b = new byte[marshal.sizeof（r)];
b=struct2bytes（r);
serialport1.write（b, 0, marshal.sizeof（r));
}
本人比较所有byte[]转化为结构的代码，没有一个合适可用，不知道哪位高人有！ |
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