.Net Listbox will not compile with javascript event handler?

This should be the simplest thing ever but it will not work. I have a simple asp.net Listbox and for the event OnSelectedIndexChanged I want to launch a javascript function. This works for when i set links to launch the same function but not when set for this particular control. The line of code is as follows:

<tr><td>
    <asp:ListBox ID="ListBox1" runat="server" Width="250" 
    Height="600" OnSelectedIndexChanged="javascript:开发者_开发问答selectedIndexChanged()">
    </asp:ListBox>
</td></tr>

Here are the compilation errors i am getting:

c:\..\ManufInfo.aspx(171,84): error CS1026: ) expected

c:\..\ManufInfo.aspx(171,84): error CS1002: ; expected

c:\..\ManufInfo.aspx(171,84): error CS1525: Invalid expression term ':'

c:\..\ManufInfo.aspx(171,84): error CS1026: ) expected

c:\..\ManufInfo.aspx(171,84): error CS1002: ; expected

c:\..\ManufInfo.aspx(171,84): error CS1525: Invalid expression term ':'

c:\..\ManufInfo.aspx(171,85): error CS1002: ; expected

c:\..\ManufInfo.aspx(171,85): error CS1002: ; expected

c:\..\ManufInfo.aspx(171,107): error CS1002: ; expected

c:\..\ManufInfo.aspx(171,107): error CS1525: Invalid expression term ')'

c:\..\ManufInfo.aspx(171,107): error CS1002: ; expected

c:\..\ManufInfo.aspx(171,107): error CS1525: Invalid expression term ')'

What the heck is going? ;) Probably a n00b mistake but I thought I was picking up jscript enough to understand that should work...

Thanks to anyone who can point me in the right direction!

---

OnSelectedIndexChanged is not meant for javascript handlers. Try this on page_load

ListBox1.Attributes.Add("onclick", "selectedIndexChanged()");

---

The value that goes in the OnSelectedIndexChanged attribute must be the name of a method in the code-behind (or code-beside) that matches the signature of the EventHandler delegate, which is executed on post back.

SOE has provided the correct way to add a javascript onclick event to your control.

---

OnSelectedIndexChanged is server side. Will not trigger a javascript, it will refer to a codebehind method.

---

This attribute is designed for ASP.Net events, not for clientside event handling.

You can attach an eventhandler after the control is rendered like this:

document.getElementById('<%=ListBox1.ClientID %>').onChange = function (){
    // your selectedIndexChanged logic goes here
};