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style='font-family:宋体'>字符串，该字符串可以通过访问文本字段</span><span lang=EN-US>textUrl</span><span
style='font-family:宋体'>的</span><span lang=EN-US>Text</span><span
style='font-family:宋体'>特性来获得。方法</span><span lang=EN-US>Navigate()</span><span
style='font-family:宋体'>后面的</span><span lang=EN-US>4</span><span
style='font-family:宋体'>个参数都是可选的。因为</span><span lang=EN-US>C#</span><span
style='font-family:宋体'>不支持可选参数，所以必须传送值。但是，用变量</span><span lang=EN-US>noArg</span><span
style='font-family:宋体'>传送</span><span lang=EN-US>null</span><span
style='font-family:宋体'>值就足够了。</span></p>

<p class=2 style='margin-top:8.15pt;margin-right:0cm;FTEL:0cm;
margin-left:21.45pt;FTEL:.0001pt;FTEL:18.45pt'><span
lang=EN-US>private void OnNavigate(object sender System.EventArgs e)</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
object noArg = null;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
axWebBrowser1.Navigate(textUrl.Text, ref noArg, ref noArg, ref noArg, ref
noArg);</span></p>

<p class=2 style='margin-top:0cm;margin-right:0cm;FTEL:8.15pt;
margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>}</span></p>

<p class=MsoNormal><span style='font-family:宋体'>在</span><span lang=EN-US>Back</span><span
style='font-family:宋体'>和</span><span lang=EN-US>Forward</span><span
style='font-family:宋体'>按钮的</span><span lang=EN-US>Click</span><span
style='font-family:宋体'>事件处理程序中，调用浏览器控件的</span><span lang=EN-US>GoBack()</span><span
style='font-family:宋体'>和</span><span lang=EN-US>GoForward()</span><span
style='font-family:宋体'>方法：</span></p>

<p class=2 style='margin-top:8.15pt;margin-right:0cm;FTEL:0cm;
margin-left:21.45pt;FTEL:.0001pt;FTEL:18.45pt'><span
lang=EN-US>private void OnBack(object sender, System.EventArgs e)</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
try</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;
axWebBrowser1. GoBack();</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
catch</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>private
void OnForward(object sender, System.EventArgs e)</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
try</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;
axWebBrowser1. GoForward();</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
catch</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
}</span></p>

<p class=2 style='margin-top:0cm;margin-right:0cm;FTEL:8.15pt;
margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>}</span></p>

<p class=MsoNormal><span lang=EN-US>Web</span><span style='font-family:宋体'>控件也提供了一些可用作</span><span
lang=EN-US>.NET</span><span style='font-family:宋体'>事件的事件。给事件</span><span
lang=EN-US>StatusTextChange</span><span style='font-family:宋体'>添加事件处理程序</span><span
lang=EN-US>OnStatusChange()</span><span style='font-family:宋体'>，把由控件返回的状态设置为</span><span
lang=EN-US>Windows</span><span style='font-family:宋体'>窗体应用程序中的状态栏。</span></p>

<p class=2 style='margin-top:8.15pt;margin-right:0cm;FTEL:0cm;
margin-left:21.45pt;FTEL:.0001pt;FTEL:18.45pt'><span
lang=EN-US>private void OnStatusChange(object sender </span></p>

<p class=2 style='margin-left:21.45pt;FTEL:74.4pt'><span lang=EN-US>AxSHDocVw.DWebBrowserEvents2_StatusTextChangeEvent
e)</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
statusBar.Text = e.text;</span></p>

<p class=2 style='margin-top:0cm;margin-right:0cm;FTEL:8.15pt;
margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>}</span></p>

<p class=MsoNormal><span style='font-family:宋体'>现在就有了一个简单的浏览器，可用于导航到</span><span
lang=EN-US>Web</span><span style='font-family:宋体'>页面上，如图</span><span
lang=EN-US>28-12</span><span style='font-family:宋体'>所示。</span></p>

<p class=a><span lang=EN-US><img width=432 height=302
src="28/image013.jpg"></span></p>

<p class=10><span style='font-family:宋体'>图</span><span lang=EN-US>&nbsp; 28-12</span></p>

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