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/**/
<asp:DropDownList ID="dropdownlist" runat="server" AutoPostBack="True" OnSelectedIndexChanged="selectchanged">
</asp:DropDownList>
//绑定
dropdownlist.DataSource = ds.Tables[0];
dropdownlist.DataTextField = "name";
dropdownlist.DataValueField = "id";
dropdownlist.DataBind();
protected void selectchanged(object sender, EventArgs e)
{
//在这个地方取dropdownlist.SelectedIndex总是0,求解;
}
protected void selectchanged(object sender, EventArgs e)
{
//在这个地方取dropdownlist.SelectedIndex总是0,求解;
}