webbrowser关于后退前进的 goback和goforward 及 cangoback和cangoforward

    <p><span style="font-size: 10pt;">this.webbrowser1.documentcompleted += new system.windows.forms.webbrowserdocumentcompletedeventhandler(this.webbrowser1_documentcompleted);<br>this.webbrowser1.cangobackchanged += new system.eventhandler(this.webbrowser1_cangobackchanged);<br>this.webbrowser1.cangoforwardchanged += new system.eventhandler(this.webbrowser1_cangoforwardchanged);</span></p><p><span style="font-size: 10pt;">//后退<br>private void btngoback_myclick(object sender, eventargs e)<br>{<br> this.webbrowser1.goback(); <br>}</span></p><p><span style="font-size: 10pt;">//前进<br>private void btngoforward_myclick(object sender, eventargs e)<br>{<br> this.webbrowser1.goforward();<br>}</span></p><p><span style="font-size: 10pt;">//判断及设定 后退按钮是否可用<br>private void webbrowser1_cangobackchanged(object sender, eventargs e)<br>{<br> this.btngoback.enabled = webbrowser1.cangoback;<br>}<br>//判断及设定 前进按钮是否可用<br>private void webbrowser1_cangoforwardchanged(object sender, eventargs e)<br>{<br> this.btngoforward.enabled = webbrowser1.cangoforward;<br>}</span></p>