Question

标题听起来很奇怪，但那就是实际发生的事情。我发现有类似问题的人，但这些页面上没有答案。我有一个绑定到ObjectDataSource的DetailsView控件代码：

<asp:DetailsView ID="DetailsView1" runat="server" BackColor="#7B7C95"   BorderColor="White" BorderWidth="1px" CellPadding="2" ForeColor="White" GridLines="None" Style="height: 80%; width: 80%" AutoGenerateRows="False" DataSourceID="UserTableObjectDataSource" Font-Bold="True" Font-Names="Tahoma" AutoGenerateEditButton="True" OnItemUpdating="DetailsView1_ItemUpdating">
                <AlternatingRowStyle BackColor="#393847" />
                <FieldHeaderStyle VerticalAlign="Middle" />
                <Fields>
                    <asp:TemplateField ShowHeader="False">
                        <ItemTemplate>
                            <div style="width: 50%; height: auto; overflow: auto;">
                                <asp:Image ID="Image1" runat="server" AlternateText="No Image Added" ImageUrl='<%# Eval("ImageUrl") %>' />
                            </div>
                        </ItemTemplate>
                        <ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" />
                    </asp:TemplateField>
                    <asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" ReadOnly="True" />
                    <asp:BoundField DataField="PackagesBooked" HeaderText="Packages Booked" SortExpression="PackagesBooked" ReadOnly="True">
                        <ItemStyle Font-Underline="True" />
                    </asp:BoundField>
                    <asp:BoundField DataField="Email" HeaderText="Email" SortExpression="Email" />
                    <asp:BoundField DataField="PhoneNumber" HeaderText="PhoneNumber" SortExpression="PhoneNumber" />
                </Fields>
                <FooterStyle BackColor="Tan" VerticalAlign="Middle" />
                <HeaderStyle BackColor="Tan" Font-Bold="True" VerticalAlign="Middle" />
                <PagerStyle BackColor="Silver" ForeColor="DarkSlateBlue" HorizontalAlign="Center" />
            </asp:DetailsView>
            <asp:ObjectDataSource ID="UserTableObjectDataSource" runat="server" SelectMethod="getUser" TypeName="HolidaysForYou.DAL.DbHandler" UpdateMethod="updateUser" ValidateRequestMode="Enabled">
                <SelectParameters>
                    <asp:SessionParameter Name="username" SessionField="Username" Type="String" />
                </SelectParameters>
                <UpdateParameters>
                    <asp:Parameter Name="Email" Type="String" />
                    <asp:Parameter Name="PhoneNumber" Type="String" />
                    <asp:SessionParameter Name="username" SessionField="Username" Type="String" />
                </UpdateParameters>
            </asp:ObjectDataSource>

更新方法如下所示

 public static void updateUser(string Email, string PhoneNumber, string username)
        {
            string usernameLower = username.ToLower();
            string queryString = "Update [UserTable] SET Email='" + Email + "',PhoneNumber='" + PhoneNumber + "' WHERE ([Name] = '" + usernameLower + "')";
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                SqlCommand command = new SqlCommand(queryString, connection);
                try
                {
                    connection.Open();
                    command.BeginExecuteNonQuery();
                }
                catch (Exception ex)
                {
                    throw ex;
                }

            }
        }

当我在调试模式下运行程序并逐步慢慢运行时，如果我只运行它，程序就可以完美运行，而Db中没有任何变化。

我也试过从DetailsView1_ItemUpdating函数中调用updateUser函数，如：

 protected void DetailsView1_ItemUpdating(object sender, System.Web.UI.WebControls.DetailsViewUpdateEventArgs e)
        {
            try
            {
                string newEmail = (string)e.NewValues["Email"];
                string newPhoneNumber = (string)e.NewValues["PhoneNumber"];
                if (!UserHomeValidate.userUpdateValidate(newEmail, newPhoneNumber))
                {
                    e.Cancel = true;
                    Error.Visible = true;
                }
                else
                    UserHomeValidate._updateUser(newEmail, newPhoneNumber, Session["Username"].ToString().ToUpper());
            }
            catch (Exception exception)
            {
                Utility.LogFile.CreateLogFile(exception);
            }
        }

其中_updateUser与updateUser完全相同，但仍未更改dataBase ....这可能与回发有关但我不知道它是如何工作的.. 这令人沮丧，我们将不胜感激。

Answer 1

解决了这个问题...... 只需要添加

if (!Page.IsPostBack)
                    DetailsView1.DataBind();

到page_Load以避免在回发时绑定，因为旧的值将被传递...

ObjectDataSource的UpdateMethod未反映在运行中的DB中，但在调试中有效

1 个答案: