本文的例子在以下環(huán)境調試通過：windows2003+amd64雙核cpu+visualstudio2005(c#)下調試通過，無錯版！

首先要添加“引用”一個dll，選擇“system management”；

再引入2個命名空間：
using  system.management;
using  system.io;

foreach循環(huán)：聲明一個迭代變量自動獲取數(shù)組中每個元素的值。
string.format：格式化字符，本站就有解釋。

代碼：

form1.cs

using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.text;
using system.windows.forms;
using system.management;
using system.io;
namespace windowsapplication1
{
    public partial class form1 : form
    {
        public form1()
        {
            initializecomponent();
        }

        private void button1_click(object sender, eventargs e)
        {
            //獲取cpu編號
            managementclass myclass = new managementclass("win32_processor");
            managementobjectcollection mycollection = myclass.getinstances();
            string myinfo = "當前系統(tǒng)cpu編號是：";
            string mycpuid = "";
            foreach (managementobject myobject in mycollection)
            {
                mycpuid = myobject.properties["processorid"].value.tostring();
                break;
            }
            myinfo += mycpuid;
            messagebox.show(myinfo, "信息提示", messageboxbuttons.ok, messageboxicon.information);
        }

        private void button2_click(object sender, eventargs e)
        {
            //獲取計算機cpu的當前電壓
            string myinfo = "計算機cpu的當前電壓是：";
            managementobjectsearcher mysearcher = new managementobjectsearcher("select * from win32_processor");
            foreach (managementobject myobject in mysearcher.get())
            {
                try
                {
                    myinfo += "/n" + string.format("currentvoltage : " + myobject["currentvoltage"].tostring());
                    myinfo += "/n=========================================================";
                }
                catch { }
            }
            messagebox.show(myinfo, "信息提示", messageboxbuttons.ok, messageboxicon.information);
        }

        private void button3_click(object sender, eventargs e)
        {
            //獲取計算機cpu的外部頻率
            string myinfo = "計算機cpu的外部頻率是：";
            managementobjectsearcher mysearcher = new managementobjectsearcher("select * from win32_processor");
            foreach (managementobject myobject in mysearcher.get())
            {
                try
                {
                    myinfo += "/n" + string.format("extclock : " + myobject["extclock"].tostring());
                    myinfo += "/n=========================================================";
                }
                catch { }
            }
            messagebox.show(myinfo, "信息提示", messageboxbuttons.ok, messageboxicon.information);
        }

        private void button4_click(object sender, eventargs e)
        {
            //獲取計算機cpu的二級緩存
            string myinfo = "計算機cpu的二級緩存尺寸是：";
            managementobjectsearcher mysearcher = new managementobjectsearcher("select * from win32_processor");
            foreach (managementobject myobject in mysearcher.get())
            {
                myinfo += "/n" + string.format("l2cachesize: " + myobject["l2cachesize"].tostring());
                myinfo += "/n=========================================================";
            }
            messagebox.show(myinfo, "信息提示", messageboxbuttons.ok, messageboxicon.information);
        }

        private void button5_click(object sender, eventargs e)
        {
            //獲取計算機cpu的制造商名稱
            string myinfo = "計算機cpu的制造商名稱是：";
            managementobjectsearcher mysearcher = new managementobjectsearcher("select * from win32_processor");
            foreach (managementobject myobject in mysearcher.get())
            {
                myinfo += "/n" + string.format("manufacturer : " + myobject["manufacturer"].tostring());
                myinfo += "/n=========================================================";
            }
            messagebox.show(myinfo, "信息提示", messageboxbuttons.ok, messageboxicon.information);
        }

        private void button6_click(object sender, eventargs e)
        {
            //獲取計算機cpu的產(chǎn)品名稱
            string myinfo = "計算機cpu的產(chǎn)品名稱是：";
            managementobjectsearcher mysearcher = new managementobjectsearcher("select * from win32_processor");
            foreach (managementobject myobject in mysearcher.get())
            {
                myinfo += "/n" + string.format("name : " + myobject["name"].tostring());
                myinfo += "/n=========================================================";
            }
            messagebox.show(myinfo, "信息提示", messageboxbuttons.ok, messageboxicon.information);

        }

        private void button7_click(object sender, eventargs e)
        {
            //獲取計算機cpu的版本信息
            string myinfo = "計算機cpu的版本信息如下：";
            managementobjectsearcher mysearcher = new managementobjectsearcher("select * from win32_processor");
            foreach (managementobject myobject in mysearcher.get())
            {
                myinfo += "/n" + string.format("version: " + myobject["version"].tostring());
                myinfo += "/n=========================================================";
            }
            messagebox.show(myinfo, "信息提示", messageboxbuttons.ok, messageboxicon.information);

        }

        private void button8_click(object sender, eventargs e)
        {
            //獲取計算機cpu的當前使用百分比 注意要把sqlserver或者其他耗cpu的軟件開著否則看不到效果就一直為0
            string myinfo = "計算機cpu的當前使用百分比是：";
            managementobjectsearcher mysearcher = new managementobjectsearcher("select * from win32_processor");
            foreach (managementobject myobject in mysearcher.get())
            {
                myinfo += "/n" + string.format("loadpercentage : " + myobject["loadpercentage"].tostring());
                myinfo += "/n=========================================================";
            }
            messagebox.show(myinfo, "信息提示", messageboxbuttons.ok, messageboxicon.information);

        }

        private void button9_click(object sender, eventargs e)
        {
            //獲取計算機cpu的最大時鐘頻率
            string myinfo = "計算機cpu的最大時鐘頻率是：";
            managementobjectsearcher mysearcher = new managementobjectsearcher("select * from win32_processor");
            foreach (managementobject myobject in mysearcher.get())
            {
                myinfo += "/n" + string.format("maxclockspeed : " + myobject["maxclockspeed"].tostring());
                myinfo += "/n=========================================================";
            }
            messagebox.show(myinfo, "信息提示", messageboxbuttons.ok, messageboxicon.information);

        }

        private void button10_click(object sender, eventargs e)
        {
            //獲取計算機cpu的當前時鐘頻率
            string myinfo = "計算機cpu的當前時鐘頻率是：";
            managementobjectsearcher mysearcher = new managementobjectsearcher("select * from win32_processor");
            foreach (managementobject myobject in mysearcher.get())
            {
                myinfo += "/n" + string.format("currentclockspeed : " + myobject["currentclockspeed"].tostring());
                myinfo += "/n=========================================================";
            }
            messagebox.show(myinfo, "信息提示", messageboxbuttons.ok, messageboxicon.information);

        }

        private void button11_click(object sender, eventargs e)
        {
            //獲取計算機的cpu地址寬度
            string myinfo = "當前計算機的cpu地址寬度是：";
            managementobjectsearcher mysearcher = new managementobjectsearcher("select * from win32_processor");
            foreach (managementobject myobject in mysearcher.get())
            {
                myinfo += "/n" + string.format("addresswidth: " + myobject["addresswidth"].tostring());
                myinfo += "/n=========================================================";
            }
            messagebox.show(myinfo, "信息提示", messageboxbuttons.ok, messageboxicon.information);

        }

        private void button14_click(object sender, eventargs e)
        {
            //獲取計算機的cpu數(shù)據(jù)寬度
            string myinfo = "當前計算機的cpu數(shù)據(jù)寬度是：";
            managementobjectsearcher mysearcher = new managementobjectsearcher("select * from win32_processor");
            foreach (managementobject myobject in mysearcher.get())
            {
                myinfo += "/n" + string.format("datawidth : " + myobject["datawidth"].tostring());
                myinfo += "/n=========================================================";
            }
            messagebox.show(myinfo, "信息提示", messageboxbuttons.ok, messageboxicon.information);

        }
    }
}    

form1.designer.cs

namespace windowsapplication1
{
    partial class form1
    {
        /// <summary>
        /// 必需的設計器變量。
        /// </summary>
        private system.componentmodel.icontainer components = null;

        /// <summary>
        /// 清理所有正在使用的資源。
        /// </summary>
        /// <param name="disposing">如果應釋放托管資源，為 true；否則為 false。</param>
        protected override void dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.dispose();
            }
            base.dispose(disposing);
        }

        #region windows 窗體設計器生成的代碼

        /// <summary>
        /// 設計器支持所需的方法 - 不要
        /// 使用代碼編輯器修改此方法的內容。
        /// </summary>
        private void initializecomponent()
        {
            this.button1 = new system.windows.forms.button();
            this.button2 = new system.windows.forms.button();
            this.button3 = new system.windows.forms.button();
            this.button4 = new system.windows.forms.button();
            this.button5 = new system.windows.forms.button();
            this.button6 = new system.windows.forms.button();
            this.button7 = new system.windows.forms.button();
            this.button8 = new system.windows.forms.button();
            this.button9 = new system.windows.forms.button();
            this.button10 = new system.windows.forms.button();
            this.button11 = new system.windows.forms.button();
            this.button14 = new system.windows.forms.button();
            this.label1 = new system.windows.forms.label();
            this.suspendlayout();
            //
            // button1
            //
            this.button1.location = new system.drawing.point(12, 12);
            this.button1.name = "button1";
            this.button1.size = new system.drawing.size(182, 23);
            this.button1.tabindex = 5;
            this.button1.text = "獲取cpu編號";
            this.button1.usevisualstylebackcolor = true;
            this.button1.click += new system.eventhandler(this.button1_click);
            //
            // button2
            //
            this.button2.location = new system.drawing.point(12, 41);
            this.button2.name = "button2";
            this.button2.size = new system.drawing.size(186, 23);
            this.button2.tabindex = 17;
            this.button2.text = "獲取計算機cpu的當前電壓";
            this.button2.usevisualstylebackcolor = true;
            this.button2.click += new system.eventhandler(this.button2_click);
            //
            // button3
            //
            this.button3.location = new system.drawing.point(12, 70);
            this.button3.name = "button3";
            this.button3.size = new system.drawing.size(186, 23);
            this.button3.tabindex = 18;
            this.button3.text = "獲取計算機cpu的外部頻率";
            this.button3.usevisualstylebackcolor = true;
            this.button3.click += new system.eventhandler(this.button3_click);
            //
            // button4
            //
            this.button4.location = new system.drawing.point(12, 99);
            this.button4.name = "button4";
            this.button4.size = new system.drawing.size(186, 23);
            this.button4.tabindex = 19;
            this.button4.text = "獲取計算機cpu的二級緩存";
            this.button4.usevisualstylebackcolor = true;
            this.button4.click += new system.eventhandler(this.button4_click);
            //
            // button5
            //
            this.button5.location = new system.drawing.point(12, 128);
            this.button5.name = "button5";
            this.button5.size = new system.drawing.size(186, 23);
            this.button5.tabindex = 21;
            this.button5.text = "獲取計算機cpu的制造商名稱";
            this.button5.usevisualstylebackcolor = true;
            this.button5.click += new system.eventhandler(this.button5_click);
            //
            // button6
            //
            this.button6.location = new system.drawing.point(204, 157);
            this.button6.name = "button6";
            this.button6.size = new system.drawing.size(206, 23);
            this.button6.tabindex = 22;
            this.button6.text = "獲取計算機cpu的產(chǎn)品名稱";
            this.button6.usevisualstylebackcolor = true;
            this.button6.click += new system.eventhandler(this.button6_click);
            //
            // button7
            //
            this.button7.location = new system.drawing.point(12, 158);
            this.button7.name = "button7";
            this.button7.size = new system.drawing.size(186, 23);
            this.button7.tabindex = 23;
            this.button7.text = "獲取計算機cpu的版本信息";
            this.button7.usevisualstylebackcolor = true;
            this.button7.click += new system.eventhandler(this.button7_click);
            //
            // button8
            //
            this.button8.location = new system.drawing.point(204, 70);
            this.button8.name = "button8";
            this.button8.size = new system.drawing.size(204, 23);
            this.button8.tabindex = 24;
            this.button8.text = "獲取計算機cpu的當前使用百分比";
            this.button8.usevisualstylebackcolor = true;
            this.button8.click += new system.eventhandler(this.button8_click);
            //
            // button9
            //
            this.button9.location = new system.drawing.point(204, 41);
            this.button9.name = "button9";
            this.button9.size = new system.drawing.size(204, 23);
            this.button9.tabindex = 25;
            this.button9.text = "獲取計算機cpu的最大時鐘頻率";
            this.button9.usevisualstylebackcolor = true;
            this.button9.click += new system.eventhandler(this.button9_click);
            //
            // button10
            //
            this.button10.location = new system.drawing.point(202, 12);
            this.button10.name = "button10";
            this.button10.size = new system.drawing.size(204, 23);
            this.button10.tabindex = 26;
            this.button10.text = "獲取計算機cpu的當前時鐘頻率";
            this.button10.usevisualstylebackcolor = true;
            this.button10.click += new system.eventhandler(this.button10_click);
            //
            // button11
            //
            this.button11.location = new system.drawing.point(204, 99);
            this.button11.name = "button11";
            this.button11.size = new system.drawing.size(204, 23);
            this.button11.tabindex = 27;
            this.button11.text = "獲取計算機的cpu地址寬度";
            this.button11.usevisualstylebackcolor = true;
            this.button11.click += new system.eventhandler(this.button11_click);
            //
            // button14
            //
            this.button14.location = new system.drawing.point(204, 128);
            this.button14.name = "button14";
            this.button14.size = new system.drawing.size(204, 23);
            this.button14.tabindex = 28;
            this.button14.text = "獲取計算機的cpu數(shù)據(jù)寬度";
            this.button14.usevisualstylebackcolor = true;
            this.button14.click += new system.eventhandler(this.button14_click);
            //
            // label1
            //
            this.label1.autosize = true;
            this.label1.location = new system.drawing.point(15, 193);
            this.label1.name = "label1";
            this.label1.size = new system.drawing.size(341, 12);
            this.label1.tabindex = 29;
            this.label1.text = "作者：清清月兒 http://blog.csdn.net/21aspnet/  2007.3.23";
            //
            // form1
            //
            this.autoscaledimensions = new system.drawing.sizef(6f, 12f);
            this.autoscalemode = system.windows.forms.autoscalemode.font;
            this.clientsize = new system.drawing.size(422, 214);
            this.controls.add(this.label1);
            this.controls.add(this.button14);
            this.controls.add(this.button11);
            this.controls.add(this.button10);
            this.controls.add(this.button9);
            this.controls.add(this.button8);
            this.controls.add(this.button7);
            this.controls.add(this.button6);
            this.controls.add(this.button5);
            this.controls.add(this.button4);
            this.controls.add(this.button3);
            this.controls.add(this.button2);
            this.controls.add(this.button1);
            this.name = "form1";
            this.text = "form1";
            this.resumelayout(false);
            this.performlayout();

        }

        #endregion

        private system.windows.forms.button button1;
        private system.windows.forms.button button2;
        private system.windows.forms.button button3;
        private system.windows.forms.button button4;
        private system.windows.forms.button button5;
        private system.windows.forms.button button6;
        private system.windows.forms.button button7;
        private system.windows.forms.button button8;
        private system.windows.forms.button button9;
        private system.windows.forms.button button10;
        private system.windows.forms.button button11;
        private system.windows.forms.button button14;
        private system.windows.forms.label label1;
    }
}