无法使用弹出扩展器将数据添加到数据库

Question

我使用 AJAX 模态弹出扩展器作为子表单。我有一个带有文本框的页面，当用户单击按钮时，应将文本框中的数据添加到数据库并出现弹出窗口。问题是，当单击按钮时，会出现弹出窗口，但没有任何内容添加到数据库中。如果我评论弹出窗口，一切正常。请帮忙。谢谢

<asp:Button ID="btnNewSubmt" runat="server" Text="Submit" 
                            ValidationGroup = "NewUser" onclick="btnNewSubmt_Click" OnClientClick = "return isPageValid()"/>
                        <asp:Button ID="btnValidPopUp" runat="server" Text="Button" style = "display:none"/>
                        <asp:Panel ID="pnlUserWorkShop" runat="server">
                                <asp:SqlDataSource ID="sqlWorkSName" runat="server" 
                                    ConnectionString="<%$ ConnectionStrings:WildLife_EducationConnectionString %>" 
                                    SelectCommand="SELECT DISTINCT [WorkshopName] FROM [tblWorkshop]"></asp:SqlDataSource>
                                <asp:Label runat="server" Text="Please select work shop you would like to register for:"></asp:Label>
                                <asp:DropDownList ID="ddlWorkShopChose" runat="server" 
                                    DataSourceID="sqlWorkSName" AppendDataBoundItems="True" 
                                    DataTextField="WorkshopName" DataValueField="WorkshopName">
                                    <asp:ListItem></asp:ListItem>
                                </asp:DropDownList>
                        </asp:Panel>
                        <asp:ModalPopupExtender ID="mdlUserWorkShop" runat="server" TargetControlID = "btnValidPopUp" PopupControlID = "pnlUserWorkShop" BehaviorID = "myModalPopup" >
                        </asp:ModalPopupExtender>  

后面的代码：

using (SqlConnection conn = new SqlConnection(@"Data Source=MyDataBase;Initial     Catalog=MyDataBase;Integrated Security=True;"))


    SqlCommand CmdSql = new SqlCommand
    ("INSERT INTO [tbluser] ([UserLastName], [UserFirstName], [UserMiddleInitial]) VALUES (@UserFirstName,@UserLastName, @UserFirstName, @UserMiddleInitial)", conn);
    conn.Open();
    CmdSql.Parameters.AddWithValue("@UserLastName", txtNewUserLN.Text.ToString());
    CmdSql.Parameters.AddWithValue("@UserFirstName", txtNewUserFN.Text.ToString());
    CmdSql.Parameters.AddWithValue("@UserMiddleInitial", txtNewUserMI.Text.ToString());  
    CmdSql.Connection = conn;
    CmdSql.ExecuteNonQuery();
    conn.Close(); 

Answer 1

TargetControlID = "btnValidPopUp"

因此，您的按钮回发被禁用，因此它不会在单击事件时触发。要获得所需的结果集 TragetControLiD 的 moddal 弹出窗口，按钮的可见性为假，并在单击您的按钮 btnValidPopUp 时写入此

mdlUserWorkShop.Show()