C#实现显示CPU使用率与内存使用率

实践过程

效果

代码

public partial class Form1 : Form
{
   public Form1()
   {
       InitializeComponent();
   }
   Process[] MyProcesses;
   Thread td;
   private void myUser()
   {
       ManagementObjectSearcher searcher = new ManagementObjectSearcher("select * from Win32_Processor");
       foreach (ManagementObject myobject in searcher.Get())
       {
           tssluse.Text = myobject["LoadPercentage"].ToString()+" ％";
           lblCPU.Text = myobject["LoadPercentage"].ToString() + " ％";
           mheight = Convert.ToInt32(myobject["LoadPercentage"].ToString());
           if (mheight == 100)
               panel3.Height = 100;
           CreateImage();
           Memory();
       }
   }

private void Memory()
   {
       Microsoft.VisualBasic.Devices.Computer myInfo = new Microsoft.VisualBasic.Devices.Computer();
       //获取物理内存总量
       pbMemorySum.Maximum = Convert.ToInt32(myInfo.Info.TotalPhysicalMemory/1024/1024);
       pbMemorySum.Value = Convert.ToInt32(myInfo.Info.TotalPhysicalMemory / 1024 / 1024);
       lblSum.Text = (myInfo.Info.TotalPhysicalMemory / 1024).ToString();
       //获取可用物理内存总量
       pbMemoryUse.Maximum = Convert.ToInt32(myInfo.Info.TotalPhysicalMemory / 1024 / 1024);
       pbMemoryUse.Value = Convert.ToInt32(myInfo.Info.AvailablePhysicalMemory / 1024 / 1024);
       lblMuse.Text = (myInfo.Info.AvailablePhysicalMemory / 1024).ToString();
       //获取虚拟内存总量
       pbVmemorysum.Maximum = Convert.ToInt32(myInfo.Info.TotalVirtualMemory / 1024 / 1024);
       pbVmemorysum.Value = Convert.ToInt32(myInfo.Info.TotalVirtualMemory / 1024 / 1024);
       lblVinfo.Text = (myInfo.Info.TotalVirtualMemory / 1024).ToString();
       //获取可用虚拟内存总量
       pbVmemoryuse.Maximum = Convert.ToInt32(myInfo.Info.TotalVirtualMemory / 1024 / 1024);
       pbVmemoryuse.Value = Convert.ToInt32(myInfo.Info.AvailableVirtualMemory/ 1024 / 1024);
       lblVuse.Text = (myInfo.Info.AvailableVirtualMemory / 1024).ToString();
   }
   private void Form1_Load(object sender, EventArgs e)
   {
       CheckForIllegalCrossThreadCalls = false;
       MyProcesses = Process.GetProcesses();
       tsslNum.Text = MyProcesses.Length.ToString();
       myUser();
   }

private void timer1_Tick(object sender, EventArgs e)
   {
       MyProcesses = Process.GetProcesses();
       tsslNum.Text = MyProcesses.Length.ToString();
       td = new Thread(new ThreadStart(myUser));
       td.Start();
   }

private void Form1_FormClosed(object sender, FormClosedEventArgs e)
   {
       if (td != null)
       {
           td.Abort();
       }
   }
   int mheight = 0;
   private void CreateImage()
   {
       int i=panel3.Height/100;
       Bitmap image = new Bitmap(panel3.Width,panel3.Height);
       //创建Graphics类对象
       Graphics g = Graphics.FromImage(image);
       g.Clear(Color.Green);
       SolidBrush mybrush = new SolidBrush(Color.Lime);
       g.FillRectangle(mybrush,0,panel3.Height-mheight*i,26,mheight*i);
       panel3.BackgroundImage = image;

}
}

partial class Form1
{
   /// <summary>
   /// 必需的设计器变量。
   /// </summary>
   private System.ComponentModel.IContainer components = null;

/// <summary>
   /// 清理所有正在使用的资源。
   /// </summary>
   /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
   protected override void Dispose(bool disposing)
   {
       if (disposing && (components != null))
       {
           components.Dispose();
       }
       base.Dispose(disposing);
   }

#region Windows 窗体设计器生成的代码

/// <summary>
   /// 设计器支持所需的方法 - 不要
   /// 使用代码编辑器修改此方法的内容。
   /// </summary>
   private void InitializeComponent()
   {
       this.components = new System.ComponentModel.Container();
       this.groupBox1 = new System.Windows.Forms.GroupBox();
       this.panel1 = new System.Windows.Forms.Panel();
       this.panel3 = new System.Windows.Forms.Panel();
       this.lblCPU = new System.Windows.Forms.Label();
       this.groupBox2 = new System.Windows.Forms.GroupBox();
       this.lblMuse = new System.Windows.Forms.Label();
       this.lblSum = new System.Windows.Forms.Label();
       this.pbMemoryUse = new System.Windows.Forms.ProgressBar();
       this.pbMemorySum = new System.Windows.Forms.ProgressBar();
       this.label2 = new System.Windows.Forms.Label();
       this.label1 = new System.Windows.Forms.Label();
       this.statusStrip1 = new System.Windows.Forms.StatusStrip();
       this.toolStripStatusLabel1 = new System.Windows.Forms.ToolStripStatusLabel();
       this.tsslNum = new System.Windows.Forms.ToolStripStatusLabel();
       this.toolStripStatusLabel3 = new System.Windows.Forms.ToolStripStatusLabel();
       this.toolStripStatusLabel4 = new System.Windows.Forms.ToolStripStatusLabel();
       this.tssluse = new System.Windows.Forms.ToolStripStatusLabel();
       this.timer1 = new System.Windows.Forms.Timer(this.components);
       this.groupBox3 = new System.Windows.Forms.GroupBox();
       this.lblVuse = new System.Windows.Forms.Label();
       this.lblVinfo = new System.Windows.Forms.Label();
       this.pbVmemoryuse = new System.Windows.Forms.ProgressBar();
       this.pbVmemorysum = new System.Windows.Forms.ProgressBar();
       this.label5 = new System.Windows.Forms.Label();
       this.label6 = new System.Windows.Forms.Label();
       this.groupBox1.SuspendLayout();
       this.panel1.SuspendLayout();
       this.groupBox2.SuspendLayout();
       this.statusStrip1.SuspendLayout();
       this.groupBox3.SuspendLayout();
       this.SuspendLayout();
       //
       // groupBox1
       //
       this.groupBox1.Controls.Add(this.panel1);
       this.groupBox1.Location = new System.Drawing.Point(8, 7);
       this.groupBox1.Name = "groupBox1";
       this.groupBox1.Size = new System.Drawing.Size(89, 206);
       this.groupBox1.TabIndex = 0;
       this.groupBox1.TabStop = false;
       this.groupBox1.Text = "CPU 使用";
       //
       // panel1
       //
       this.panel1.BackColor = System.Drawing.Color.Black;
       this.panel1.Controls.Add(this.panel3);
       this.panel1.Controls.Add(this.lblCPU);
       this.panel1.Location = new System.Drawing.Point(7, 16);
       this.panel1.Name = "panel1";
       this.panel1.Size = new System.Drawing.Size(74, 185);
       this.panel1.TabIndex = 0;
       //
       // panel3
       //
       this.panel3.BackColor = System.Drawing.Color.Green;
       this.panel3.Location = new System.Drawing.Point(26, 9);
       this.panel3.Name = "panel3";
       this.panel3.Size = new System.Drawing.Size(22, 154);
       this.panel3.TabIndex = 4;
       //
       // lblCPU
       //
       this.lblCPU.AutoSize = true;
       this.lblCPU.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
       this.lblCPU.ForeColor = System.Drawing.Color.Lime;
       this.lblCPU.Location = new System.Drawing.Point(24, 172);
       this.lblCPU.Name = "lblCPU";
       this.lblCPU.Size = new System.Drawing.Size(0, 12);
       this.lblCPU.TabIndex = 3;
       //
       // groupBox2
       //
       this.groupBox2.Controls.Add(this.lblMuse);
       this.groupBox2.Controls.Add(this.lblSum);
       this.groupBox2.Controls.Add(this.pbMemoryUse);
       this.groupBox2.Controls.Add(this.pbMemorySum);
       this.groupBox2.Controls.Add(this.label2);
       this.groupBox2.Controls.Add(this.label1);
       this.groupBox2.Location = new System.Drawing.Point(103, 7);
       this.groupBox2.Name = "groupBox2";
       this.groupBox2.Size = new System.Drawing.Size(321, 100);
       this.groupBox2.TabIndex = 1;
       this.groupBox2.TabStop = false;
       this.groupBox2.Text = "物理内存(K)";
       //
       // lblMuse
       //
       this.lblMuse.AutoSize = true;
       this.lblMuse.Location = new System.Drawing.Point(257, 61);
       this.lblMuse.Name = "lblMuse";
       this.lblMuse.Size = new System.Drawing.Size(41, 12);
       this.lblMuse.TabIndex = 7;
       this.lblMuse.Text = "label8";
       //
       // lblSum
       //
       this.lblSum.AutoSize = true;
       this.lblSum.Location = new System.Drawing.Point(257, 39);
       this.lblSum.Name = "lblSum";
       this.lblSum.Size = new System.Drawing.Size(41, 12);
       this.lblSum.TabIndex = 6;
       this.lblSum.Text = "label7";
       //
       // pbMemoryUse
       //
       this.pbMemoryUse.Location = new System.Drawing.Point(69, 61);
       this.pbMemoryUse.Name = "pbMemoryUse";
       this.pbMemoryUse.Size = new System.Drawing.Size(183, 13);
       this.pbMemoryUse.TabIndex = 4;
       //
       // pbMemorySum
       //
       this.pbMemorySum.Location = new System.Drawing.Point(69, 39);
       this.pbMemorySum.Name = "pbMemorySum";
       this.pbMemorySum.Size = new System.Drawing.Size(183, 13);
       this.pbMemorySum.TabIndex = 3;
       //
       // label2
       //
       this.label2.AutoSize = true;
       this.label2.Location = new System.Drawing.Point(19, 61);
       this.label2.Name = "label2";
       this.label2.Size = new System.Drawing.Size(53, 12);
       this.label2.TabIndex = 1;
       this.label2.Text = "可用数：";
       //
       // label1
       //
       this.label1.AutoSize = true;
       this.label1.Location = new System.Drawing.Point(31, 40);
       this.label1.Name = "label1";
       this.label1.Size = new System.Drawing.Size(41, 12);
       this.label1.TabIndex = 0;
       this.label1.Text = "总数：";
       //
       // statusStrip1
       //
       this.statusStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
       this.toolStripStatusLabel1,
       this.tsslNum,
       this.toolStripStatusLabel3,
       this.toolStripStatusLabel4,
       this.tssluse});
       this.statusStrip1.Location = new System.Drawing.Point(0, 220);
       this.statusStrip1.Name = "statusStrip1";
       this.statusStrip1.Size = new System.Drawing.Size(432, 22);
       this.statusStrip1.TabIndex = 2;
       this.statusStrip1.Text = "statusStrip1";
       //
       // toolStripStatusLabel1
       //
       this.toolStripStatusLabel1.Name = "toolStripStatusLabel1";
       this.toolStripStatusLabel1.Size = new System.Drawing.Size(53, 17);
       this.toolStripStatusLabel1.Text = "进程数：";
       //
       // tsslNum
       //
       this.tsslNum.AutoSize = false;
       this.tsslNum.Name = "tsslNum";
       this.tsslNum.Size = new System.Drawing.Size(50, 17);
       this.tsslNum.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
       //
       // toolStripStatusLabel3
       //
       this.toolStripStatusLabel3.Font = new System.Drawing.Font("宋体", 10F);
       this.toolStripStatusLabel3.ForeColor = System.Drawing.Color.Gray;
       this.toolStripStatusLabel3.Name = "toolStripStatusLabel3";
       this.toolStripStatusLabel3.Size = new System.Drawing.Size(14, 17);
       this.toolStripStatusLabel3.Text = "|";
       //
       // toolStripStatusLabel4
       //
       this.toolStripStatusLabel4.Name = "toolStripStatusLabel4";
       this.toolStripStatusLabel4.Size = new System.Drawing.Size(65, 17);
       this.toolStripStatusLabel4.Text = "CPU 使用：";
       //
       // tssluse
       //
       this.tssluse.Name = "tssluse";
       this.tssluse.Size = new System.Drawing.Size(0, 17);
       //
       // timer1
       //
       this.timer1.Enabled = true;
       this.timer1.Interval = 1000;
       this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
       //
       // groupBox3
       //
       this.groupBox3.Controls.Add(this.lblVuse);
       this.groupBox3.Controls.Add(this.lblVinfo);
       this.groupBox3.Controls.Add(this.pbVmemoryuse);
       this.groupBox3.Controls.Add(this.pbVmemorysum);
       this.groupBox3.Controls.Add(this.label5);
       this.groupBox3.Controls.Add(this.label6);
       this.groupBox3.Location = new System.Drawing.Point(103, 113);
       this.groupBox3.Name = "groupBox3";
       this.groupBox3.Size = new System.Drawing.Size(321, 100);
       this.groupBox3.TabIndex = 3;
       this.groupBox3.TabStop = false;
       this.groupBox3.Text = "虚拟内存(K)";
       //
       // lblVuse
       //
       this.lblVuse.AutoSize = true;
       this.lblVuse.Location = new System.Drawing.Point(257, 61);
       this.lblVuse.Name = "lblVuse";
       this.lblVuse.Size = new System.Drawing.Size(41, 12);
       this.lblVuse.TabIndex = 9;
       this.lblVuse.Text = "label8";
       //
       // lblVinfo
       //
       this.lblVinfo.AutoSize = true;
       this.lblVinfo.Location = new System.Drawing.Point(257, 38);
       this.lblVinfo.Name = "lblVinfo";
       this.lblVinfo.Size = new System.Drawing.Size(41, 12);
       this.lblVinfo.TabIndex = 8;
       this.lblVinfo.Text = "label8";
       //
       // pbVmemoryuse
       //
       this.pbVmemoryuse.Location = new System.Drawing.Point(69, 60);
       this.pbVmemoryuse.Name = "pbVmemoryuse";
       this.pbVmemoryuse.Size = new System.Drawing.Size(183, 13);
       this.pbVmemoryuse.TabIndex = 4;
       //
       // pbVmemorysum
       //
       this.pbVmemorysum.Location = new System.Drawing.Point(69, 38);
       this.pbVmemorysum.Name = "pbVmemorysum";
       this.pbVmemorysum.Size = new System.Drawing.Size(183, 13);
       this.pbVmemorysum.TabIndex = 3;
       //
       // label5
       //
       this.label5.AutoSize = true;
       this.label5.Location = new System.Drawing.Point(19, 60);
       this.label5.Name = "label5";
       this.label5.Size = new System.Drawing.Size(53, 12);
       this.label5.TabIndex = 1;
       this.label5.Text = "可用数：";
       //
       // label6
       //
       this.label6.AutoSize = true;
       this.label6.Location = new System.Drawing.Point(31, 39);
       this.label6.Name = "label6";
       this.label6.Size = new System.Drawing.Size(41, 12);
       this.label6.TabIndex = 0;
       this.label6.Text = "总数：";
       //
       // Form1
       //
       this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
       this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
       this.ClientSize = new System.Drawing.Size(432, 242);
       this.Controls.Add(this.groupBox3);
       this.Controls.Add(this.statusStrip1);
       this.Controls.Add(this.groupBox2);
       this.Controls.Add(this.groupBox1);
       this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
       this.MaximizeBox = false;
       this.MinimizeBox = false;
       this.Name = "Form1";
       this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
       this.Text = "CPU使用率";
       this.Load += new System.EventHandler(this.Form1_Load);
       this.FormClosed += new System.Windows.Forms.FormClosedEventHandler(this.Form1_FormClosed);
       this.groupBox1.ResumeLayout(false);
       this.panel1.ResumeLayout(false);
       this.panel1.PerformLayout();
       this.groupBox2.ResumeLayout(false);
       this.groupBox2.PerformLayout();
       this.statusStrip1.ResumeLayout(false);
       this.statusStrip1.PerformLayout();
       this.groupBox3.ResumeLayout(false);
       this.groupBox3.PerformLayout();
       this.ResumeLayout(false);
       this.PerformLayout();

}

#endregion

private System.Windows.Forms.GroupBox groupBox1;
   private System.Windows.Forms.GroupBox groupBox2;
   private System.Windows.Forms.Panel panel1;
   private System.Windows.Forms.StatusStrip statusStrip1;
   private System.Windows.Forms.ToolStripStatusLabel toolStripStatusLabel1;
   private System.Windows.Forms.ToolStripStatusLabel tsslNum;
   private System.Windows.Forms.ToolStripStatusLabel toolStripStatusLabel3;
   private System.Windows.Forms.ToolStripStatusLabel toolStripStatusLabel4;
   private System.Windows.Forms.ToolStripStatusLabel tssluse;
   private System.Windows.Forms.Timer timer1;
   private System.Windows.Forms.Label lblCPU;
   private System.Windows.Forms.Panel panel3;
   private System.Windows.Forms.Label label2;
   private System.Windows.Forms.ProgressBar pbMemoryUse;
   private System.Windows.Forms.ProgressBar pbMemorySum;
   private System.Windows.Forms.Label label1;
   private System.Windows.Forms.GroupBox groupBox3;
   private System.Windows.Forms.ProgressBar pbVmemoryuse;
   private System.Windows.Forms.ProgressBar pbVmemorysum;
   private System.Windows.Forms.Label label5;
   private System.Windows.Forms.Label label6;
   private System.Windows.Forms.Label lblMuse;
   private System.Windows.Forms.Label lblSum;
   private System.Windows.Forms.Label lblVuse;
   private System.Windows.Forms.Label lblVinfo;

}

来源：https://zhima.blog.csdn.net/article/details/128277267