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using
System;
using
System.Windows.Forms;
namespace
Demo
{ public
partial
class
Form1 : Form
{
public
Form1()
{
InitializeComponent();
webBrowser1.DocumentText = ("<select id=\"pid\" onchange=\"gradeChange()\">"
+
"<option grade=\"1\" value=\"a\">选项一</a>"
+
"<option grade=\"2\" value=\"b\">选项二</a>"
+
"</select>"
+
"<script type=\"text/javascript\">"
+
"function gradeChange(){"
+
"var objS = document.getElementById(\"pid\");"
+
"var grade = objS.options[objS.selectedIndex].grade;"
+
"alert(grade);"
+
"}"
+
"</script>");
}
private
void
button2_Click(object
sender, EventArgs e)
{
HtmlElementCollection elements = webBrowser1.Document.GetElementById("pid").GetElementsByTagName("option");
foreach
(HtmlElement option in
elements)
{
option.SetAttribute("selected", "selected");
webBrowser1.Document.GetElementById("pid").RaiseEvent("onchange");
break;
}
}
}
} |