form2.cs

单片机ATMEL M8 USB监视m8usbmonitor.rar

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Diagnostics;

namespace HyperBarServer
{
	/// <summary>
	/// Form2 的摘要说明。
	/// </summary>
	public class Form2 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label lblCntName;
		private System.Windows.Forms.ListBox lbCounters;
		private System.Windows.Forms.Label lblInstName;
		private System.Windows.Forms.ListBox lbInstances;
		private System.Windows.Forms.Label lblCatName;
		private System.Windows.Forms.ListBox lbCategories;
		private System.Windows.Forms.Button btnOK;
		private System.Windows.Forms.Button btnCancel;
		private System.Windows.Forms.Label lblSelectedCounter1;
		private System.Windows.Forms.Label lblSelectedCounter;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form2()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <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.lblCntName = new System.Windows.Forms.Label();
			this.lbCounters = new System.Windows.Forms.ListBox();
			this.lblInstName = new System.Windows.Forms.Label();
			this.lbInstances = new System.Windows.Forms.ListBox();
			this.lblCatName = new System.Windows.Forms.Label();
			this.lbCategories = new System.Windows.Forms.ListBox();
			this.btnOK = new System.Windows.Forms.Button();
			this.btnCancel = new System.Windows.Forms.Button();
			this.lblSelectedCounter1 = new System.Windows.Forms.Label();
			this.lblSelectedCounter = new System.Windows.Forms.Label();
			this.SuspendLayout();
			// 
			// lblCntName
			// 
			this.lblCntName.Location = new System.Drawing.Point(392, 20);
			this.lblCntName.Name = "lblCntName";
			this.lblCntName.Size = new System.Drawing.Size(88, 16);
			this.lblCntName.TabIndex = 4;
			this.lblCntName.Text = "计数器名称：";
			// 
			// lbCounters
			// 
			this.lbCounters.HorizontalScrollbar = true;
			this.lbCounters.ItemHeight = 12;
			this.lbCounters.Location = new System.Drawing.Point(392, 40);
			this.lbCounters.Name = "lbCounters";
			this.lbCounters.Size = new System.Drawing.Size(168, 256);
			this.lbCounters.Sorted = true;
			this.lbCounters.TabIndex = 5;
			this.lbCounters.SelectedIndexChanged += new System.EventHandler(this.lbCounters_SelectedIndexChanged);
			// 
			// lblInstName
			// 
			this.lblInstName.Location = new System.Drawing.Point(208, 20);
			this.lblInstName.Name = "lblInstName";
			this.lblInstName.Size = new System.Drawing.Size(72, 16);
			this.lblInstName.TabIndex = 2;
			this.lblInstName.Text = "实例名称：";
			// 
			// lbInstances
			// 
			this.lbInstances.HorizontalScrollbar = true;
			this.lbInstances.ItemHeight = 12;
			this.lbInstances.Location = new System.Drawing.Point(208, 40);
			this.lbInstances.Name = "lbInstances";
			this.lbInstances.Size = new System.Drawing.Size(168, 256);
			this.lbInstances.Sorted = true;
			this.lbInstances.TabIndex = 3;
			this.lbInstances.SelectedIndexChanged += new System.EventHandler(this.lbInstances_SelectedIndexChanged);
			// 
			// lblCatName
			// 
			this.lblCatName.Location = new System.Drawing.Point(24, 20);
			this.lblCatName.Name = "lblCatName";
			this.lblCatName.Size = new System.Drawing.Size(80, 16);
			this.lblCatName.TabIndex = 0;
			this.lblCatName.Text = "类别名称：";
			// 
			// lbCategories
			// 
			this.lbCategories.HorizontalScrollbar = true;
			this.lbCategories.ItemHeight = 12;
			this.lbCategories.Location = new System.Drawing.Point(24, 40);
			this.lbCategories.Name = "lbCategories";
			this.lbCategories.Size = new System.Drawing.Size(168, 256);
			this.lbCategories.Sorted = true;
			this.lbCategories.TabIndex = 1;
			this.lbCategories.SelectedIndexChanged += new System.EventHandler(this.lbCategories_SelectedIndexChanged);
			// 
			// btnOK
			// 
			this.btnOK.DialogResult = System.Windows.Forms.DialogResult.OK;
			this.btnOK.Location = new System.Drawing.Point(408, 344);
			this.btnOK.Name = "btnOK";
			this.btnOK.Size = new System.Drawing.Size(72, 24);
			this.btnOK.TabIndex = 8;
			this.btnOK.Text = "确定(&O)";
			// 
			// btnCancel
			// 
			this.btnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
			this.btnCancel.Location = new System.Drawing.Point(488, 344);
			this.btnCancel.Name = "btnCancel";
			this.btnCancel.Size = new System.Drawing.Size(72, 24);
			this.btnCancel.TabIndex = 9;
			this.btnCancel.Text = "取消(&C)";
			// 
			// lblSelectedCounter1
			// 
			this.lblSelectedCounter1.Location = new System.Drawing.Point(24, 310);
			this.lblSelectedCounter1.Name = "lblSelectedCounter1";
			this.lblSelectedCounter1.Size = new System.Drawing.Size(80, 16);
			this.lblSelectedCounter1.TabIndex = 6;
			this.lblSelectedCounter1.Text = "所选计数器：";
			// 
			// lblSelectedCounter
			// 
			this.lblSelectedCounter.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.lblSelectedCounter.Location = new System.Drawing.Point(24, 328);
			this.lblSelectedCounter.Name = "lblSelectedCounter";
			this.lblSelectedCounter.Size = new System.Drawing.Size(352, 40);
			this.lblSelectedCounter.TabIndex = 7;
			// 
			// Form2
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(584, 390);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.lblSelectedCounter1,
																		  this.lblSelectedCounter,
																		  this.btnCancel,
																		  this.btnOK,
																		  this.lblCntName,
																		  this.lbCounters,
																		  this.lblInstName,
																		  this.lbInstances,
																		  this.lblCatName,
																		  this.lbCategories});
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
			this.MaximizeBox = false;
			this.Name = "Form2";
			this.Text = "选择计数器";
			this.Load += new System.EventHandler(this.Form2_Load);
			this.ResumeLayout(false);

		}
		#endregion

		private string sCatName;
		private string sInstName;
		private string sCntName;

		public string CategoryName
		{
			get
			{
				return sCatName;
			}
		}

		public string InstanceName
		{
			get
			{
				return sInstName;
			}
		}
		
		public string CounterName
		{
			get
			{
				return sCntName;
			}
		}

		private void Form2_Load(object sender, System.EventArgs e)
		{
			this.Cursor = Cursors.WaitCursor;
			
			try
			{
				ReloadPerformanceCounters();
			}
			catch (Exception ex)
			{
				MessageBox.Show("无法枚举性能计数器！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Stop);
				this.DialogResult = DialogResult.Cancel;
			}
			
			this.Cursor = Cursors.Default;
		}

		private void ReloadPerformanceCounters()
		{
			lbCategories.Items.Clear();
			lbInstances.Items.Clear();
			lbCounters.Items.Clear();
			sCatName = "";
			sInstName = "";
			sCntName = "";
			lblSelectedCounter.Text = Form1.BuildCounterString(sCatName, sInstName, sCntName);

			// Get all the counter categories from the local machine				
			PerformanceCounterCategory[] pccs = PerformanceCounterCategory.GetCategories();
			
			// Fill performance counter category list
			for (int i = 0; i < pccs.Length; i++)
			{
				lbCategories.Items.Add(pccs[i].CategoryName);
			}
			
			// Select first item by default
			lbCategories.SelectedIndex = 0;
			lbCategories.Enabled = true;
		}

		private void lbCategories_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			PerformanceCounterCategory pcc = new PerformanceCounterCategory(lbCategories.SelectedItem.ToString());
			string[] InstNames = null;
			bool bInstExists;

			lbInstances.Items.Clear();
			lbCounters.Items.Clear();

			// Check instance existance of the category
			try
			{
				InstNames = pcc.GetInstanceNames();
				bInstExists = true;
			}
			catch (InvalidOperationException ex)
			{
				bInstExists = false;
			}

			if (!bInstExists)
			{
				lbInstances.Items.Add("<没有实例>");
				lbCounters.Items.Add("<没有计数器>");
				lbInstances.Enabled = false;
				lbCounters.Enabled = false;
				sCatName = "";
				sInstName = "";
				sCntName = "";
				lblSelectedCounter.Text = Form1.BuildCounterString(sCatName, sInstName, sCntName);
			}
			else
			{
				if (InstNames.Length > 0)
				{
					for (int i = 0; i < InstNames.Length; i++)
					{
						lbInstances.Items.Add(InstNames[i]);
					}
					// Select first item by default
					lbInstances.SelectedIndex = 0;
					lbInstances.Enabled = true;
				}
				else
				{
					// default instance
					lbInstances.Items.Add("<默认实例>");
					lbInstances.Enabled = false;

					// Add counters now
					PerformanceCounter[] pcs = pcc.GetCounters();
					for (int i = 0; i < pcs.Length; i++)
					{
						lbCounters.Items.Add(pcs[i].CounterName);
					}

					// Select first item by default
					lbCounters.SelectedIndex = 0;
					lbCounters.Enabled = true;
				}
			}
		}

		private void lbInstances_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			PerformanceCounter[] pcs = null;
			PerformanceCounterCategory pcc = new PerformanceCounterCategory(lbCategories.SelectedItem.ToString());

			lbCounters.Items.Clear();

			try
			{
				// Enumerate counters
				pcs = pcc.GetCounters(lbInstances.SelectedItem.ToString());
			}
			catch (Exception ex)
			{
				// Instance may not present at the moment
				MessageBox.Show("无法枚举指定实例的计数器！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
				lbCounters.Items.Add("<错误>");
				lbCounters.Enabled = false;
				sCatName = "";
				sInstName = "";
				sCntName = "";
				lblSelectedCounter.Text = Form1.BuildCounterString(sCatName, sInstName, sCntName);
				return;
			}

			// Add counters
			for (int i = 0; i < pcs.Length; i++)
			{
				lbCounters.Items.Add(pcs[i].CounterName);
			}

			// Select first item by default
			lbCounters.SelectedIndex = 0;
			lbCounters.Enabled = true;
		}

		private void lbCounters_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			sCatName = lbCategories.SelectedItem.ToString();
			sCntName = lbCounters.SelectedItem.ToString();
			
			if (lbInstances.Items.Count == 1 && lbInstances.Items[0].ToString().Equals("<默认实例>"))
			{
				sInstName = "";
			}
			else
			{
				sInstName = lbInstances.SelectedItem.ToString();
			}

			lblSelectedCounter.Text = Form1.BuildCounterString(sCatName, sInstName, sCntName);
		}
	}
}