C# - How To Find The Right Parameters For An Event Without Using Design Mode In Visual Studio 2010

Is there a way to know what parameters are needed by an event in Visual Studio 2010?Let's say I have a DropDownList control and I want to bind a method to the "OnSelectedIndexChanged", I would do something like thisn the ASPX File:

<asp:DropDownList ID="lstMyList" runat="server" OnSelectedIndexChanged="lstMyList_SelectedIndexChanged"></asp:DropDownList>
protected void lstMyList_SelectedIndexChanged(object sender, EventArgs e)
{
...
}