C#判断系统是32位还是64位的方法

本文实例讲述了c#判断系统是32位还是64位的方法。分享给大家供大家参考。具体如下：

public static int getosbit()
{
 try
 {
  string addresswidth = string.empty;
  connectionoptions mconnoption = new connectionoptions();
  managementscope mms = new managementscope(@"\\localhost", mconnoption);
  objectquery mquery = new objectquery("select addresswidth from win32_processor");
  managementobjectsearcher msearcher = new managementobjectsearcher(mms, mquery);
  managementobjectcollection mobjectcollection = msearcher.get();
  foreach (managementobject mobject in mobjectcollection)
  {
   addresswidth = mobject["addresswidth"].tostring();
  }
  return int32.parse(addresswidth);
 }
 catch (exception ex)
 {
  return 32;
 }
}

这里需要引用system.management，该方法在以guest用户登录的情况下抛出异常：

或者用以下方法：

[dllimport("kernel32.dll", setlasterror = true, callingconvention = callingconvention.winapi)] 
[return: marshalas(unmanagedtype.bool)] 
public static extern bool iswow64process([in] intptr hprocess, [out] out bool lpsysteminfo); 
private static bool is64bit() 
{
bool retval; 
iswow64process( process.getcurrentprocess().handle, out retval); 
return retval; 
}

这里需要引用system.diagnostics

希望本文所述对大家的c#程序设计有所帮助。