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ASP.NET HTML 控件 SortedList DropDownList

asp.net html 控件 sortedlist dropdownlist

<script  runat="server">
sub page_load
if not page.ispostback then
   dim mycountries=new sortedlist
   mycountries.add("n","norway")
   mycountries.add("s","sweden")
   mycountries.add("f","france")
   mycountries.add("i","italy")
   dd.datasource=mycountries
   dd.datavaluefield="key"
   dd.datatextfield="value"
   dd.databind()
end if
end sub

sub displaymessage(s as object,e as eventargs)
lbl1.text="your favorite country is: " & dd.selecteditem.text
end sub
</script>

<!doctype html>
<html>
<body>

<form runat="server">
<asp:dropdownlist id="dd" runat="server"
autopostback="true" onselectedindexchanged="displaymessage" />
<p><asp:label id="lbl1" runat="server" /></p>
</form>

</body>
</html>
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