<asp:Button ID="Button_regId" runat="server" Font-Bold="False" OnClick="HistoryPushMessage_Click" Text="添加" />

$("#<%=Button_regId.ClientID%>").click();

protected void HistoryPushMessage_Click(object sender, EventArgs e)
    {
        Response.Redirect("~/SJZD/HistoryPushMessage.aspx");
    }