C＃用API來查看系統資訊

最後更新：2018-12-05 來源：互聯網

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<HTML>
<HEAD>
<title>SystemInfo</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<colgroup>
<col width="50%">
<col width="50%">
</colgroup>
<table width="100%">
<tr>
<td bgcolor="#99ccff">Window及系統路徑：</td>
<td bgcolor="#99ccff">系統日期資訊：</td>
</tr>
<tr>
<td>
<asp:Label id="WindowsDirectory" runat="server">WindowsDirectory</asp:Label></td>
<td>
<asp:Label id="Date" runat="server">Date</asp:Label></td>
</tr>
<tr>
<td>
<asp:Label id="SystemDirectory" runat="server">SystemDirectoryLabel</asp:Label></td>
<td>
<asp:Label id="Time" runat="server">Time</asp:Label></td>
</tr>
<tr>
<td bgcolor="#99ccff">記憶體資訊：</td>
<td bgcolor="#99ccff">CUP資訊：</td>
</tr>
<tr>
<td>
<asp:Label id="MemoryLoad" runat="server">MemoryLoad</asp:Label></td>
<td>
<asp:Label id="NumberOfProcessors" runat="server">NumberOfProcessorsLabel</asp:Label></td>
</tr>
<tr>
<td>
<asp:Label id="TotalPhys" runat="server">TotalPhys</asp:Label></td>
<td>
<asp:Label id="ProcessorType" runat="server">ProcessorTypeLabel</asp:Label></td>
</tr>
<tr>
<td>
<asp:Label id="AvailPhys" runat="server">AvailPhys</asp:Label></td>
<td>
<asp:Label id="ProcessorLevel" runat="server">ProcessorLevelLabel</asp:Label></td>
</tr>
<tr>
<td>
<asp:Label id="TotalPageFile" runat="server">TotalPageFile</asp:Label></td>
<td>
<asp:Label id="OemId" runat="server">OemIdLabel</asp:Label></td>
</tr>
<tr>
<td>
<asp:Label id="AvailPageFile" runat="server">AvailPageFile</asp:Label></td>
<td>
<asp:Label id="PageSize" runat="server">PageSize</asp:Label></td>
</tr>
<tr>
<td>
<asp:Label id="TotalVirtual" runat="server">TotalVirtualLabel</asp:Label></td>
<td></td>
</tr>
<tr>
<td>
<asp:Label id="AvailVirtual" runat="server">AvailVirtualLabel</asp:Label></td>
<td></td>
</tr>
</table>
<asp:Button id="Button1" style="Z-INDEX: 101; LEFT: 752px; POSITION: absolute; TOP: 304px" runat="server"
Text="擷取"></asp:Button>
</form>
</body>
</HTML>

public class SystemInfo : System.Web.UI.Page
{
//要添加如下引用
//using System.Runtime.InteropServices;
//using System.Text;
protected System.Web.UI.WebControls.Label WindowsDirectory;
protected System.Web.UI.WebControls.Label SystemDirectory;
protected System.Web.UI.WebControls.Label NumberOfProcessors;
protected System.Web.UI.WebControls.Label ProcessorType;
protected System.Web.UI.WebControls.Label ProcessorLevel;
protected System.Web.UI.WebControls.Label OemId;
protected System.Web.UI.WebControls.Label PageSize;
protected System.Web.UI.WebControls.Label MemoryLoad;
protected System.Web.UI.WebControls.Label TotalPhys;
protected System.Web.UI.WebControls.Label AvailPhys;
protected System.Web.UI.WebControls.Label TotalPageFile;
protected System.Web.UI.WebControls.Label AvailPageFile;
protected System.Web.UI.WebControls.Label TotalVirtual;
protected System.Web.UI.WebControls.Label AvailVirtual;
protected System.Web.UI.WebControls.Label Date;
protected System.Web.UI.WebControls.Label Time;
protected System.Web.UI.WebControls.Button Button1;

//在調用API之前，你必須先匯入System.Runtime.InteropServices這個名稱空間。
//其中，"DllImport"屬性用來從不可控代碼中調用一個方法，它指定了DLL的位置，該DLL中包含調用的外部方法；
//"kernel32"設定了類庫名；"public"指明函數的訪問類型為公有的；
//"static"修飾符聲明一個靜態元素，而該元素屬於類型本身而不是指定的對象；
//"extern"表示該方法將在工程外部執行，同時使用DllImport匯入的方法必須使用"extern"修飾符
[DllImport("kernel32")]
public static extern void GetWindowsDirectory(StringBuilder WinDir,int count);
[DllImport("kernel32")]
public static extern void GetSystemDirectory(StringBuilder SysDir,int count);
[DllImport("kernel32")]
public static extern void GetSystemInfo(ref CPU_INFO cpuinfo);
[DllImport("kernel32")]
public static extern void GlobalMemoryStatus(ref MEMORY_INFO meminfo);
[DllImport("kernel32")]
public static extern void GetSystemTime(ref SYSTEMTIME_INFO stinfo);

//定義CPU的資訊結構
[StructLayout(LayoutKind.Sequential)]
public struct CPU_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;
}
//定義記憶體的資訊結構
[StructLayout(LayoutKind.Sequential)]
public struct MEMORY_INFO
{
public uint dwLength;
public uint dwMemoryLoad;
public uint dwTotalPhys;
public uint dwAvailPhys;
public uint dwTotalPageFile;
public uint dwAvailPageFile;
public uint dwTotalVirtual;
public uint dwAvailVirtual;
}
//定義系統時間的資訊結構
[StructLayout(LayoutKind.Sequential)]
public struct SYSTEMTIME_INFO
{
public ushort wYear;
public ushort wMonth;
public ushort wDayOfWeek;
public ushort wDay;
public ushort wHour;
public ushort wMinute;
public ushort wSecond;
public ushort wMilliseconds;
}

private void Page_Load(object sender, System.EventArgs e)
{
// Put user code to initialize the page here
}

Web Form Designer generated code

private void Button1_Click(object sender, System.EventArgs e)
{
//調用GetWindowsDirectory和GetSystemDirectory函數分別取得Windows路徑和系統路徑
const int nChars = 128;
StringBuilder Buff = new StringBuilder(nChars);
GetWindowsDirectory(Buff,nChars);
WindowsDirectory.Text = "Windows路徑："+Buff.ToString();
GetSystemDirectory(Buff,nChars);
SystemDirectory.Text = "系統路徑："+Buff.ToString();
//調用GetSystemInfo函數擷取CPU的相關資訊
CPU_INFO CpuInfo;
CpuInfo = new CPU_INFO();
GetSystemInfo(ref CpuInfo);
NumberOfProcessors.Text = "本電腦中有"+CpuInfo.dwNumberOfProcessors.ToString()+"個CPU";
ProcessorType.Text = "CPU的類型為"+CpuInfo.dwProcessorType.ToString();
ProcessorLevel.Text = "CPU等級為"+CpuInfo.dwProcessorLevel.ToString();
OemId.Text = "CPU的OEM ID為"+CpuInfo.dwOemId.ToString();
PageSize.Text = "CPU中的頁面大小為"+CpuInfo.dwPageSize.ToString();
//調用GlobalMemoryStatus函數擷取記憶體的相關資訊
MEMORY_INFO MemInfo;
MemInfo = new MEMORY_INFO();
GlobalMemoryStatus(ref MemInfo);
MemoryLoad.Text = MemInfo.dwMemoryLoad.ToString()+"%的記憶體正在使用";
TotalPhys.Text = "實體記憶體共有"+MemInfo.dwTotalPhys.ToString()+"位元組";
AvailPhys.Text = "可使用的實體記憶體有"+MemInfo.dwAvailPhys.ToString()+"位元組";
TotalPageFile.Text = "分頁檔總大小為"+MemInfo.dwTotalPageFile.ToString()+"位元組";
AvailPageFile.Text = "尚可分頁檔大小為"+MemInfo.dwAvailPageFile.ToString()+"位元組";
TotalVirtual.Text = "總虛擬記憶體有"+MemInfo.dwTotalVirtual.ToString()+"位元組";
AvailVirtual.Text = "未用虛擬記憶體有"+MemInfo.dwAvailVirtual.ToString()+"位元組";
//調用GetSystemTime函數擷取系統時間資訊
SYSTEMTIME_INFO StInfo;
StInfo = new SYSTEMTIME_INFO();
GetSystemTime(ref StInfo);
Date.Text = StInfo.wYear.ToString()+"年"+StInfo.wMonth.ToString()+"月"+StInfo.wDay.ToString()+"日";
Time.Text = (StInfo.wHour+8).ToString()+"點"+StInfo.wMinute.ToString()+"分"+StInfo.wSecond.ToString()+"秒";
}
}

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C＃用API來查看系統資訊

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