Use C # To obtain the memory status and system status in the wince System

I have been trying to obtain the memory and system status in wince5.0, But I have suffered from it. I used Google to search for a mess and finally found two reference articles to write the following test procedure. The implementation step is to use vs2005 to create a wince application project and add a form. Then drag two listboxes into the form and name them listbox1 and listbox2 respectively. Drag two buttons, named No btnget or btnexit, and double-click them to add events. The Code is as follows:

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;

Namespace wincememorymanagementdemo
{
Public partial class mainform: Form
{

// Struct to retrive system info
[Structlayout (layoutkind. Sequential)]
Public struct system_info
{
Public uint dwoemid;
Public uint dwpagesize;
Public uint lpminimumapplicationaddress;
Public uint lpmaximumapplicationaddress;
Public uint dwactiveprocessormask;
Public uint dwnumberofprocessors;
Public uint dwprocessortype;
Public uint dwallocationgranularity;
Public uint dwprocessorlevel;
Public uint dwprocessorrevision;
}

// Struct to retrive memory status
[Structlayout (layoutkind. Sequential)]
Public struct memorystatus
{
Public uint dwlength;
Public uint dwmemoryload;
Public uint dwtotalphys;
Public uint dwavailphys;
Public uint dwtotalpagefile;
Public uint dwavailpagefile;
Public uint dwtotalvirtual;
Public uint dwavailvirtual;
}

// To get system information
[Dllimport ("coredll")]
Private Static extern void getsysteminfo (ref system_info psi );

// To get memory status
[Dllimport ("coredll")]
Private Static extern void globalmemorystatus (ref memorystatus BUF );

// Cnstants used for processor types
Public const int processor_intel_386 = 386;
Public const int processor_intel_timeout = 486;
Public const int processor_intel_pentium = 586;
Public const int processor_mips_r4000 = 4000;
Public const int processor_alpha_21064 = 21064;
Public const int processor_telechips_tcc79x = 2336;

Public mainform ()
{
Initializecomponent ();
}

/// <Summary>
/// Obtain information
/// </Summary>
/// <Param name = "sender"> </param>
/// <Param name = "E"> </param>
Private void btnget_click (Object sender, eventargs E)
{
Listbox1.items. Clear ();
Listbox2.items. Clear ();
Try
{
/*************************************** **************************************** ***/

Memorystatus memst = new memorystatus ();
Globalmemorystatus (ref memst );

Listbox1.items. Add ("Available page file:" + (memst. dwavailpagefile/1024). tostring () + "kb ");
Listbox1.items. Add ("application memory in use:" + (memst. dwtotalphys/1024-memst. dwavailphys/1024). tostring () + "kb ");
Listbox1.items. Add ("available physical memory:" + (memst. dwavailphys/1024). tostring () + "kb ");
Listbox1.items. Add ("available virtual memory:" + (memst. dwavailvirtual/1024). tostring () + "kb ");
Listbox1.items. Add ("size of structure:" + memst. dwlength. tostring ());
Listbox1.items. Add ("memory in use:" + memst. dwmemoryload. tostring () + "% ");
Listbox1.items. Add ("total page size:" + (memst. dwtotalpagefile/1024). tostring () + "kb ");
Listbox1.items. Add ("total physical memory:" + (memst. dwtotalphys/1024). tostring () + "kb ");
Listbox1.items. Add ("Total virtual memory:" + (memst. dwtotalvirtual/1024). tostring () + "kb ");

/*************************************** **************************************** ***/
System_info psi = new system_info ();
Getsysteminfo (ref psi );
String cputype;
Switch (PSI. dwprocessortype)
{

Case processor_intel_386:
Cputype = "Intel 386 ";
Break;
Case processor_intel_case:
Cputype = "Intel 486 ";
Break;
Case processor_intel_pentium:
Cputype = "Intel Pentium ";
Break;
Case processor_mips_r4000:
Cputype = "MIPS r4000 ";
Break;
Case processor_alpha_21064:
Cputype = "DEC Alpha 21064 ";
Break;
Case processor_telechips_tcc79x:
Cputype = "TELECHIPS-ARM926-TCC79X ";
Break;
Default:
Cputype = "(unknown )";
Break;
}

Listbox2.items. Add ("active processor mask:" + psi. dwactiveprocessormask. tostring ());
Listbox2.items. Add ("allocation granularity:" + psi. dwallocationgranularity. tostring ());
Listbox2.items. Add ("Number of processors:" + psi. dwnumberofprocessors. tostring ());
Listbox2.items. Add ("oem id:" + psi. dwoemid. tostring ());
Listbox2.items. Add ("page size:" + psi. dwpagesize. tostring ());
// Processor level (req filtering to get level)
Listbox2.items. Add ("processor level value:" + psi. dwprocessorlevel. tostring ());
Listbox2.items. Add ("processor revision:" + psi. dwprocessorrevision. tostring ());
Listbox2.items. Add ("CPU type:" + cputype );
Listbox2.items. Add ("Maximum Application address:" + psi. lpmaximumapplicationaddress. tostring ());
Listbox2.items. Add ("Minimum application address:" + psi. lpminimumapplicationaddress. tostring ());

Statusbar. Text = psi. dwprocessortype. tostring ();
}
Catch (exception ex)
{
Statusbar. Text = ex. message;
}
}

Private void btnexit_click (Object sender, eventargs E)
{
Application. Exit ();
}
}
}