参考代码：

1，页面

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="SMPWebPerformance.aspx.cs" Inherits="AFC_web.DataCenter.SMPWebPerformance" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

    <title></title>

</head>

<body>

    <form id="form1" runat="server">

        <div>

            <asp:ScriptManager ID="ScriptManager1" runat="server">

            </asp:ScriptManager>

            <asp:Label ID="Label1" runat="server" Font-Bold="True" Font-Size="16pt" ForeColor="Red" Text="云端服务器性能监测"></asp:Label>

            <br />

            <br />

        </div>

        <asp:UpdatePanel ID="UpdatePanel1" runat="server">

            <ContentTemplate>

                <asp:Chart ID="Chart1" runat="server" BackColor="LightSteelBlue" BackGradientStyle="TopBottom"

                    BackSecondaryColor="White" EnableTheming="False" EnableViewState="True" Height="383px"

                    Width="521px">

                    <Legends>

                        <asp:Legend Alignment="Center" Docking="Bottom" Name="Legend1" Title="图例">

                        </asp:Legend>

                    </Legends>

                    <Titles>

                        <asp:Title Font="微软雅黑, 16pt" Name="Title1" Text="系统内存监控图表">

                        </asp:Title>

                    </Titles>

                    <Series>

                        <asp:Series BorderColor="White" BorderWidth="3" ChartArea="ChartArea1" ChartType="Spline"

                            Legend="Legend1" Name="已使用物理内存" XValueType="Double" YValueType="Double">

                        </asp:Series>

                        <asp:Series BorderWidth="3" ChartArea="ChartArea1" ChartType="Spline" Legend="Legend1"

                            Name="全部占用内存">

                        </asp:Series>

                        <asp:Series ChartArea="ChartArea2" ChartType="StackedArea" Legend="Legend1" Name="CPU">

                        </asp:Series>

                    </Series>

                    <ChartAreas>

                        <asp:ChartArea BackColor="224, 224, 224" BackGradientStyle="LeftRight" Name="ChartArea1">

                        </asp:ChartArea>

                        <asp:ChartArea Name="ChartArea2">

                        </asp:ChartArea>

                    </ChartAreas>

                </asp:Chart>

                <asp:Timer ID="UITimer" runat="server" Interval="2000" OnTick="UITimer_Tick">

                </asp:Timer>

            </ContentTemplate>

        </asp:UpdatePanel>

    </form>

</body>

</html>

　　2，页面后台

　　

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.HtmlControls;

using System.Web.UI.DataVisualization.Charting;

using System.Diagnostics;

namespace AFC_web.DataCenter

{

    public partial class SMPWebPerformance : System.Web.UI.Page

    {

        static PerformanceCounter pc = new PerformanceCounter("Processor", "% Processor Time", "_Total");

        protected void Page_Load(object sender, EventArgs e)

        {

        }

        protected void UITimer_Tick(object sender, EventArgs e)

        {

            MEMORY_INFO MemInfo = new MEMORY_INFO();

            ComputerInfo.GlobalMemoryStatus(ref MemInfo);

            //UseMemory

            Series series = Chart1.Series[0];

            int xCount = series.Points.Count == 0 ? 0 : series.Points.Count - 1;

            double lastXValue = series.Points.Count == 0 ? 1 : series.Points[xCount].XValue + 1;

            double lastYValue = (double)(MemInfo.dwTotalPhys - MemInfo.dwAvailPhys) / 1024 / 1024;

            series.Points.AddXY(lastXValue, lastYValue);

            //Total Memory

            series = Chart1.Series[1];

            lastYValue = (double)(MemInfo.dwTotalVirtual + MemInfo.dwTotalPhys - MemInfo.dwAvailPhys - MemInfo.dwAvailVirtual) / 1024 / 1024;

            series.Points.AddXY(lastXValue, lastYValue);

            //CPU

            series = Chart1.Series[2];

            lastYValue = (double)pc.NextValue();

            series.Points.AddXY(lastXValue, lastYValue);

            // Remove points from the left chart side if number of points exceeds 100.

            while (this.Chart1.Series[0].Points.Count > 80)

            {

                // Remove series points

                foreach (Series s in this.Chart1.Series)

                {

                    s.Points.RemoveAt(0);

                }

            }

            // Adjust categorical scale

            double axisMinimum = this.Chart1.Series[0].Points[0].XValue;

            this.Chart1.ChartAreas[0].AxisX.Minimum = axisMinimum;

            this.Chart1.ChartAreas[0].AxisX.Maximum = axisMinimum + 99;

            //------------------------------------------------------------------

            //Random rand = new Random();

            //// Add several random point into each series

            //foreach (Series series in this.Chart1.Series)

            //{

            //    double lastYValue = series.Points[series.Points.Count - 1].YValues[0];

            //    double lastXValue = series.Points[series.Points.Count - 1].XValue + 1;

            //    for (int pointIndex = 0; pointIndex < 5; pointIndex++)

            //    {

            //        lastYValue += rand.Next(-3, 4);

            //        if (lastYValue >= 100.0)

            //        {

            //            lastYValue -= 25.0;

            //        }

            //        else if (lastYValue <= 10.0)

            //        {

            //            lastYValue += 25.0;

            //        }

            //        series.Points.AddXY(lastXValue++, lastYValue);

            //    }

            //}

            //// Remove points from the left chart side if number of points exceeds 100.

            //while (this.Chart1.Series[0].Points.Count > 100)

            //{

            //    // Remove series points

            //    foreach (Series series in this.Chart1.Series)

            //    {

            //        series.Points.RemoveAt(0);

            //    }

            //}

            //// Adjust categorical scale

            //double axisMinimum = this.Chart1.Series[0].Points[0].XValue;

            //this.Chart1.ChartAreas[0].AxisX.Minimum = axisMinimum;

            //this.Chart1.ChartAreas[0].AxisX.Maximum = axisMinimum + 100;

        }

    }

}

　　3，获取CPU 内存 信息

using System;

using System.Collections.Generic;

using System.Linq;

using System.Management; // 添加System.Management引用

using System.Text;

using System.Management.Instrumentation;

using System.Runtime.InteropServices;

using System.Diagnostics;

using System.Threading;

namespace AFC_web

{

  public class ComputerInfo

  {

  /// <summary>

  /// 取得Windows的目录

  /// </summary>

  /// <param name="WinDir"></param>

  /// <param name="count"></param>

  [DllImport("kernel32")]

  public static extern void GetWindowsDirectory(StringBuilder WinDir, int count);

  /// <summary>

  /// 获取系统路径

  /// </summary>

  /// <param name="SysDir"></param>

  /// <param name="count"></param>

  [DllImport("kernel32")]

  public static extern void GetSystemDirectory(StringBuilder SysDir, int count);

  /// <summary>

  /// 取得CPU信息

  /// </summary>

  /// <param name="cpuinfo"></param>

  [DllImport("kernel32")]

  public static extern void GetSystemInfo(ref CPU_INFO cpuinfo);

  /// <summary>

  /// 取得内存状态

  /// </summary>

  /// <param name="meminfo"></param>

  [DllImport("kernel32")]

  public static extern void GlobalMemoryStatus(ref MEMORY_INFO meminfo);

  /// <summary>

  /// 取得系统时间

  /// </summary>

  /// <param name="stinfo"></param>

  [DllImport("kernel32")]

  public static extern void GetSystemTime(ref SYSTEMTIME_INFO stinfo);

  public ComputerInfo()

  {

  }

  }

  //定义CPU的信息结构

  [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;

  }

  //定义内存的信息结构

  [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;

  }

  //定义系统时间的信息结构

  [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;

  }

}

// auxiliary print methods

// constants used to select the performance counter.

　　

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