using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Linq;
using?System.Text;
using?System.Windows.Forms;
//download?by?http://www.codefans.net
using?System.Management;
using?System.IO;

namespace?Case09_7
{
????public?partial?class?Form1?:?Form
????{
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}

????????private?void?Form1_Load（object?sender?EventArgs?e）
????????{
????????????SelectQuery?selectQuery?=?new?SelectQuery（“select?*?from?win32_logicaldisk“）;
????????????ManagementobjectSearcher?searcher?=?new?ManagementobjectSearcher（selectQuery）;
????????????foreach?（Managementobject?disk?in?searcher.Get（））
????????????{
????????????????comboBox1.Items.Add（disk[“Name“].ToString（））;
????????????}
????????}

????????private?void?button1_Click（object?sender?EventArgs?e）
????????{
????????????DriveInfo?dinfo?=?new?DriveInfo（comboBox1.Text）;
????????????float?tsize?=?dinfo.TotalSize;
????????????float?fsize?=?dinfo.TotalFreeSpace;
????????????Graphics?graphics?=?this.CreateGraphics（）;
????????????graphics.Clear（Color.White）;
????????????Pen?pen1?=?new?Pen（Color.Red）;
????????????Brush?brush1?=?new?SolidBrush（Color.WhiteSmoke）;
????????????Brush?brush2?=?new?SolidBrush（Color.Red?）;
????????????Brush?brush3?=?new?SolidBrush（Color.SteelBlue?）;
????????????Font?font1?=?new?Font（“Courier?New“?16?Fontstyle.Bold）;
????????????Font?font2?=?new?Font（“宋體“?9）;
????????????graphics.DrawString（“磁盤容量分析“?font1?brush2?new?Point（60?50））;
????????????float?angle1?=?Convert.ToSingle（（360?*?（Convert.ToSingle（fsize?/?100000000000）?/?Convert.ToSingle（tsize?/?100000000000））））;
????????????float?angle2?=?Convert.ToSingle（（360?*?（Convert.ToSingle（（tsize?-?fsize）?/?100000000000）?/?Convert.ToSingle（tsize?/?100000000000））））;
????????????graphics.FillPie（brush2?60?80?150?150?0?angle1）;
????????????graphics.FillPie（brush3?60?80?150?150?angle1?angle2）;
????????????graphics.DrawRectangle（pen1?30?235?200?50）;
????????????graphics.FillRectangle（brush2?35?245?20?10）;
????????????graphics.DrawString（“磁盤剩余容量:“?+?dinfo.TotalFreeSpace?/?1000?+?“KB“?font2?brush2?55?245）;
????????????graphics.FillRectangle（brush3?35?265?20?10）;
????????????graphics.DrawString（“磁盤已用容量:“?+?（dinfo.TotalSize?-?dinfo.TotalFreeSpace）?/?1000?+?“KB“?font2?brush3?55?265）;
????????}

????????private?void?button2_Click（object?sender?EventArgs?e）
????????{
????????????this.Close（）;
????????????Application.Exit（）;???//退出程序
????????}
????}
}

?屬性????????????大小?????日期????時間???名稱
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????????????????44110????????????????????16