<input type="button" id="button1">

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form1.cs

using system;
using system.drawing;
using system.collections;
using system.componentmodel;
using system.windows.forms;
using system.data;
using mshtml;

namespace windowsapplication2
{
/// <summary>
/// form1 的摘要說明。
/// </summary>
public class form1 : system.windows.forms.form
{
private axshdocvw.axwebbrowser axwebbrowser1;
private system.windows.forms.button button1;
private system.windows.forms.button button2;
/// <summary>
/// 必需的設計器變量。
/// </summary>
private system.componentmodel.container components = null;

public form1()
{
//
// windows 窗體設計器支持所必需的
//
initializecomponent();

//
// todo: 在 initializecomponent 調用后添加任何構造函數代碼
//
}

/// <summary>
/// 清理所有正在使用的資源。
/// </summary>
protected override void dispose( bool disposing )
{
if( disposing )
{
if (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()
{
system.resources.resourcemanager resources = new system.resources.resourcemanager(typeof(form1));
this.axwebbrowser1 = new axshdocvw.axwebbrowser();
this.button1 = new system.windows.forms.button();
this.button2 = new system.windows.forms.button();
((system.componentmodel.isupportinitialize)(this.axwebbrowser1)).begininit();
this.suspendlayout();
//
// axwebbrowser1
//
this.axwebbrowser1.enabled = true;
this.axwebbrowser1.location = new system.drawing.point(80, 184);
this.axwebbrowser1.ocxstate = ((system.windows.forms.axhost.state)(resources.getobject("axwebbrowser1.ocxstate")));
this.axwebbrowser1.size = new system.drawing.size(300, 150);
this.axwebbrowser1.tabindex = 0;
//
// button1
//
this.button1.location = new system.drawing.point(160, 96);
this.button1.name = "button1";
this.button1.size = new system.drawing.size(88, 24);
this.button1.tabindex = 1;
this.button1.text = "button1";
this.button1.click += new system.eventhandler(this.button1_click);
//
// button2
//
this.button2.location = new system.drawing.point(304, 96);
this.button2.name = "button2";
this.button2.tabindex = 2;
this.button2.text = "button2";
this.button2.click += new system.eventhandler(this.button2_click);
//
// form1
//
this.autoscalebasesize = new system.drawing.size(6, 14);
this.clientsize = new system.drawing.size(584, 397);
this.controls.add(this.button2);
this.controls.add(this.button1);
this.controls.add(this.axwebbrowser1);
this.name = "form1";
this.text = "form1";
((system.componentmodel.isupportinitialize)(this.axwebbrowser1)).endinit();
this.resumelayout(false);

}
#endregion

/// <summary>
/// 應用程序的主入口點。
/// </summary>
[stathread]
static void main()
{
application.run(new form1());
}

private void button1_click(object sender, system.eventargs e)
{
object x = system.reflection.missing.value;
axwebbrowser1.navigate(@"e:/documents and settings/administrator/桌面/dddd.htm", ref x, ref x, ref x, ref x);
}

private void button2_click(object sender, system.eventargs e)
{
mshtml.ihtmldocument2 doc = (mshtml.ihtmldocument2)axwebbrowser1.document;
mshtml.ihtmlformelement f1 =(mshtml.ihtmlformelement)doc.all.item ("form1",0);
((mshtml.ihtmlformelement)(f1)).submit();
mshtml.ihtmlelement element = (mshtml.ihtmlelement)doc.all.item("button1", 0);
element.click();
}
}
}