运用API函数获取系统信息-优快云博客

本文介绍了一个C# Web应用程序，用于获取并展示系统的基本信息，包括Windows路径、系统路径、内存使用情况、CPU信息以及系统时间等。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

<HTML>
<HEAD>
<title>SystemInfo</title>
<metaname="GENERATOR"Content="MicrosoftVisualStudio.NET7.1">
<metaname="CODE_LANGUAGE"Content="C#">
<metaname="vs_defaultClientScript"content="JavaScript">
<metaname="vs_targetSchema"content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<bodyMS_POSITIONING="GridLayout">
<formid="Form1"method="post"runat="server">
<colgroup>
<colwidth="50%">
<colwidth="50%">
</colgroup>
<tablewidth="100%">
<tr>
<tdbgcolor="#99ccff">Window及系统路径：</td>
<tdbgcolor="#99ccff">系统日期信息：</td>
</tr>
<tr>
<td>
<asp:Labelid="WindowsDirectory"runat="server">WindowsDirectory</asp:Label></td>
<td>
<asp:Labelid="Date"runat="server">Date</asp:Label></td>
</tr>
<tr>
<td>
<asp:Labelid="SystemDirectory"runat="server">SystemDirectoryLabel</asp:Label></td>
<td>
<asp:Labelid="Time"runat="server">Time</asp:Label></td>
</tr>
<tr>
<tdbgcolor="#99ccff">内存信息：</td>
<tdbgcolor="#99ccff">CUP信息：</td>
</tr>
<tr>
<td>
<asp:Labelid="MemoryLoad"runat="server">MemoryLoad</asp:Label></td>
<td>
<asp:Labelid="NumberOfProcessors"runat="server">NumberOfProcessorsLabel</asp:Label></td>
</tr>
<tr>
<td>
<asp:Labelid="TotalPhys"runat="server">TotalPhys</asp:Label></td>
<td>
<asp:Labelid="ProcessorType"runat="server">ProcessorTypeLabel</asp:Label></td>
</tr>
<tr>
<td>
<asp:Labelid="AvailPhys"runat="server">AvailPhys</asp:Label></td>
<td>
<asp:Labelid="ProcessorLevel"runat="server">ProcessorLevelLabel</asp:Label></td>
</tr>
<tr>
<td>
<asp:Labelid="TotalPageFile"runat="server">TotalPageFile</asp:Label></td>
<td>
<asp:Labelid="OemId"runat="server">OemIdLabel</asp:Label></td>
</tr>
<tr>
<td>
<asp:Labelid="AvailPageFile"runat="server">AvailPageFile</asp:Label></td>
<td>
<asp:Labelid="PageSize"runat="server">PageSize</asp:Label></td>
</tr>
<tr>
<td>
<asp:Labelid="TotalVirtual"runat="server">TotalVirtualLabel</asp:Label></td>
<td></td>
</tr>
<tr>
<td>
<asp:Labelid="AvailVirtual"runat="server">AvailVirtualLabel</asp:Label></td>
<td></td>
</tr>
</table>
<asp:Buttonid="Button1"style="Z-INDEX:101;LEFT:752px;POSITION:absolute;TOP:304px"runat="server"
Text="获取"></asp:Button>
</form>
</body>
</HTML>

publicclassSystemInfo:System.Web.UI.Page
{
//要添加如下引用
//usingSystem.Runtime.InteropServices;
//usingSystem.Text;
protectedSystem.Web.UI.WebControls.LabelWindowsDirectory;
protectedSystem.Web.UI.WebControls.LabelSystemDirectory;
protectedSystem.Web.UI.WebControls.LabelNumberOfProcessors;
protectedSystem.Web.UI.WebControls.LabelProcessorType;
protectedSystem.Web.UI.WebControls.LabelProcessorLevel;
protectedSystem.Web.UI.WebControls.LabelOemId;
protectedSystem.Web.UI.WebControls.LabelPageSize;
protectedSystem.Web.UI.WebControls.LabelMemoryLoad;
protectedSystem.Web.UI.WebControls.LabelTotalPhys;
protectedSystem.Web.UI.WebControls.LabelAvailPhys;
protectedSystem.Web.UI.WebControls.LabelTotalPageFile;
protectedSystem.Web.UI.WebControls.LabelAvailPageFile;
protectedSystem.Web.UI.WebControls.LabelTotalVirtual;
protectedSystem.Web.UI.WebControls.LabelAvailVirtual;
protectedSystem.Web.UI.WebControls.LabelDate;
protectedSystem.Web.UI.WebControls.LabelTime;
protectedSystem.Web.UI.WebControls.ButtonButton1;

//在调用API之前，你必须先导入System.Runtime.InteropServices这个名称空间。
//其中，"DllImport"属性用来从不可控代码中调用一个方法，它指定了DLL的位置，该DLL中包含调用的外部方法；
//"kernel32"设定了类库名；"public"指明函数的访问类型为公有的；
//"static"修饰符声明一个静态元素，而该元素属于类型本身而不是指定的对象；
//"extern"表示该方法将在工程外部执行，同时使用DllImport导入的方法必须使用"extern"修饰符
[DllImport("kernel32")]
publicstaticexternvoidGetWindowsDirectory(StringBuilderWinDir,intcount);
[DllImport("kernel32")]
publicstaticexternvoidGetSystemDirectory(StringBuilderSysDir,intcount);
[DllImport("kernel32")]
publicstaticexternvoidGetSystemInfo(refCPU_INFOcpuinfo);
[DllImport("kernel32")]
publicstaticexternvoidGlobalMemoryStatus(refMEMORY_INFOmeminfo);
[DllImport("kernel32")]
publicstaticexternvoidGetSystemTime(refSYSTEMTIME_INFOstinfo);

//定义CPU的信息结构
[StructLayout(LayoutKind.Sequential)]
publicstructCPU_INFO
{
publicuintdwOemId;
publicuintdwPageSize;
publicuintlpMinimumApplicationAddress;
publicuintlpMaximumApplicationAddress;
publicuintdwActiveProcessorMask;
publicuintdwNumberOfProcessors;
publicuintdwProcessorType;
publicuintdwAllocationGranularity;
publicuintdwProcessorLevel;
publicuintdwProcessorRevision;
}
//定义内存的信息结构
[StructLayout(LayoutKind.Sequential)]
publicstructMEMORY_INFO
{
publicuintdwLength;
publicuintdwMemoryLoad;
publicuintdwTotalPhys;
publicuintdwAvailPhys;
publicuintdwTotalPageFile;
publicuintdwAvailPageFile;
publicuintdwTotalVirtual;
publicuintdwAvailVirtual;
}
//定义系统时间的信息结构
[StructLayout(LayoutKind.Sequential)]
publicstructSYSTEMTIME_INFO
{
publicushortwYear;
publicushortwMonth;
publicushortwDayOfWeek;
publicushortwDay;
publicushortwHour;
publicushortwMinute;
publicushortwSecond;
publicushortwMilliseconds;
}

privatevoidPage_Load(objectsender,System.EventArgse)
{
//Putusercodetoinitializethepagehere
}

WebFormDesignergeneratedcode#regionWebFormDesignergeneratedcode
overrideprotectedvoidOnInit(EventArgse)
{
//
//CODEGEN:ThiscallisrequiredbytheASP.NETWebFormDesigner.
//
InitializeComponent();
base.OnInit(e);
}

/**////<summary>
///RequiredmethodforDesignersupport-donotmodify
///thecontentsofthismethodwiththecodeeditor.
///</summary>
privatevoidInitializeComponent()
{
this.Button1.Click+=newSystem.EventHandler(this.Button1_Click);
this.Load+=newSystem.EventHandler(this.Page_Load);

}
#endregion

privatevoidButton1_Click(objectsender,System.EventArgse)
{
//调用GetWindowsDirectory和GetSystemDirectory函数分别取得Windows路径和系统路径
constintnChars=128;
StringBuilderBuff=newStringBuilder(nChars);
GetWindowsDirectory(Buff,nChars);
WindowsDirectory.Text="Windows路径："+Buff.ToString();
GetSystemDirectory(Buff,nChars);
SystemDirectory.Text="系统路径："+Buff.ToString();
//调用GetSystemInfo函数获取CPU的相关信息
CPU_INFOCpuInfo;
CpuInfo=newCPU_INFO();
GetSystemInfo(refCpuInfo);
NumberOfProcessors.Text="本计算机中有"+CpuInfo.dwNumberOfProcessors.ToString()+"个CPU";
ProcessorType.Text="CPU的类型为"+CpuInfo.dwProcessorType.ToString();
ProcessorLevel.Text="CPU等级为"+CpuInfo.dwProcessorLevel.ToString();
OemId.Text="CPU的OEMID为"+CpuInfo.dwOemId.ToString();
PageSize.Text="CPU中的页面大小为"+CpuInfo.dwPageSize.ToString();
//调用GlobalMemoryStatus函数获取内存的相关信息
MEMORY_INFOMemInfo;
MemInfo=newMEMORY_INFO();
GlobalMemoryStatus(refMemInfo);
MemoryLoad.Text=MemInfo.dwMemoryLoad.ToString()+"%的内存正在使用";
TotalPhys.Text="物理内存共有"+MemInfo.dwTotalPhys.ToString()+"字节";
AvailPhys.Text="可使用的物理内存有"+MemInfo.dwAvailPhys.ToString()+"字节";
TotalPageFile.Text="交换文件总大小为"+MemInfo.dwTotalPageFile.ToString()+"字节";
AvailPageFile.Text="尚可交换文件大小为"+MemInfo.dwAvailPageFile.ToString()+"字节";
TotalVirtual.Text="总虚拟内存有"+MemInfo.dwTotalVirtual.ToString()+"字节";
AvailVirtual.Text="未用虚拟内存有"+MemInfo.dwAvailVirtual.ToString()+"字节";
//调用GetSystemTime函数获取系统时间信息
SYSTEMTIME_INFOStInfo;
StInfo=newSYSTEMTIME_INFO();
GetSystemTime(refStInfo);
Date.Text=StInfo.wYear.ToString()+"年"+StInfo.wMonth.ToString()+"月"+StInfo.wDay.ToString()+"日";
Time.Text=(StInfo.wHour+8).ToString()+"点"+StInfo.wMinute.ToString()+"分"+StInfo.wSecond.ToString()+"秒";
}
}