asp.net - DropDownList1.SelectedIndexChanged 不起作用

Question

Protected Sub DropDownList1_SelectedIndexChanged(
    ByVal sender As Object,
    ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged

    Context.Response.Write("selectedindexchanged")
End Sub

为什么这不起作用？

Answer 1

您是否为下拉列表设置了 Autopostback = true