Question

我正在尝试使用C＃2012从Murach的ASP.NET 4.5网络编程开始第15章练习。

这是我的问题。

网页左侧是网格视图，右侧是详细视图。

当我从DetailViews将Ahmed更新为Ahmad时，

更新未反映在GridView中。

以便显示更新。

我想知道是否有任何解决方案。

感谢您的帮助！

顺便说一句，代码是从书中复制的。

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Chapter 15: Customer Maintenance</title>
    <link href="Main.css" rel="stylesheet" type="text/css" />
</head>
<body>
    <header>
        <img src="Images/banner.jpg" "Halloween Store" />
    </header>
    <section>
    <form id="form1" runat="server">
        <div id="gridview">
            <asp:GridView ID="GridView1" runat="server" AllowPaging="True"
                DataKeyNames="Email" DataSourceID="SqlDataSource1"
                SelectedIndex="0"
                AutoGenerateColumns="False" CellPadding="4" GridLines="None" 
                ForeColor="Black" Width="320px" >
                <Columns>
                    <asp:BoundField DataField="Email" HeaderText="Email"
                        ReadOnly="True" Visible="False">
                    </asp:BoundField>
                    <asp:BoundField DataField="LastName" HeaderText="LastName">
                        <HeaderStyle HorizontalAlign="Left" />
                        <ItemStyle Width="150px" />
                    </asp:BoundField>
                    <asp:BoundField DataField="FirstName" HeaderText="FirstName">
                        <HeaderStyle HorizontalAlign="Left" />
                        <ItemStyle Width="120px" />
                    </asp:BoundField>
                    <asp:CommandField ButtonType="Button" ShowSelectButton="True" />
                </Columns>
                <HeaderStyle BackColor="#1C5E55" Font-Bold="True" ForeColor="White" />
                <RowStyle BackColor="White" ForeColor="Black" />
                <AlternatingRowStyle BackColor="#E3EAEB" ForeColor="Black" />
                <SelectedRowStyle BackColor="#F46D11" ForeColor="White" />
                <PagerSettings Mode="NextPreviousFirstLast" />
                <PagerStyle BackColor="#1C5E55" ForeColor="White"
                    HorizontalAlign="Center" />
            </asp:GridView>

            <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:HalloweenConnectionString %>" 
                OldValuesParameterFormatString ="original_{0}"

                ConflictDetection="CompareAllValues" 

                DeleteCommand="DELETE FROM [Customers] 
                WHERE [Email] = @original_Email 
                AND [LastName] = @original_LastName 
                AND [FirstName] = @original_FirstName 
                AND [Address] = @original_Address            
                AND [City] = @original_City             
                AND [State] = @original_State             
                AND [ZipCode] = @original_ZipCode             
                AND [PhoneNumber] = @original_PhoneNumber"



InsertCommand="INSERT INTO [Customers] ([Email], [LastName], [FirstName], [Address], [City], [State], [ZipCode], [PhoneNumber]) 

                VALUES (@Email, @LastName, @FirstName, @Address, @City, @State, @ZipCode, @PhoneNumber)"

SelectCommand="SELECT [Email], [LastName], [FirstName], [Address], [City], [State], [ZipCode], [PhoneNumber]
                FROM [Customers] WHERE ([Email] = @Email)"

UpdateCommand="UPDATE [Customers] SET [Email] = @Email, 
                [LastName] = @LastName,
                [FirstName]= @FirstName,
                [Address] = @Address, [City] = @City, [State] = @State, [ZipCode] = @ZipCode, 
                [PhoneNumber] = @PhoneNumber
                WHERE [Email] = @original_Email 

                AND [LastName] = @original_LastName 

                AND [FirstName] = @original_FirstName

                AND [Address] = @original_Address AND [City] = @original_City AND [State] = @original_State AND [ZipCode] = @original_ZipCode 

                AND [PhoneNumber] = @original_PhoneNumber">


<SelectParameters>
<asp:ControlParameter ControlID="GridView1" Name="Email" PropertyName="SelectedValue" Type="String"/>
</SelectParameters>

<DeleteParameters>
<asp:Parameter Name="original_Email" Type="String" />
<asp:Parameter Name="original_LastName" Type="String" />
<asp:Parameter Name="original_FirstName" Type="String" />
<asp:Parameter Name="original_Address" Type="String" />
<asp:Parameter Name="original_City" Type="String" />
<asp:Parameter Name="original_State" Type="String" />
<asp:Parameter Name="original_ZipCode" Type="String" />
<asp:Parameter Name="original_PhoneNumber" Type="String" />

</DeleteParameters>
<UpdateParameters>


<asp:Parameter Name="Email" Type="String" />
<asp:Parameter Name="LastName" Type="String" />
<asp:Parameter Name="FirstName" Type="String" />
<asp:Parameter Name="Address" Type="String" />
<asp:Parameter Name="City" Type="String" />
<asp:Parameter Name="State" Type="String" />
<asp:Parameter Name="ZipCode" Type="String" />
<asp:Parameter Name="PhoneNumber" Type="String" />

<asp:Parameter Name="original_Email" Type="String" />
<asp:Parameter Name="original_LastName" Type="String" />
<asp:Parameter Name="original_FirstName" Type="String" />
<asp:Parameter Name="original_Address" Type="String" />
<asp:Parameter Name="original_City" Type="String" />
<asp:Parameter Name="original_State" Type="String" />
<asp:Parameter Name="original_ZipCode" Type="String" />
<asp:Parameter Name="original_PhoneNumber" Type="String" />

</UpdateParameters>


<InsertParameters>

<asp:Parameter Name="Email" Type="String" />
<asp:Parameter Name="LastName" Type="String" />
<asp:Parameter Name="FirstName" Type="String" />

<asp:Parameter Name="Address" Type="String" />
<asp:Parameter Name="City" Type="String" />
<asp:Parameter Name="State" Type="String" />
<asp:Parameter Name="ZipCode" Type="String" />
<asp:Parameter Name="PhoneNumber" Type="String" />

</InsertParameters>







                </asp:SqlDataSource>
            <asp:SqlDataSource ID="SqlDataSource1" runat="server"
                ConnectionString="<%$ ConnectionStrings:HalloweenConnectionString %>"
                SelectCommand="SELECT [Email], [LastName], [FirstName] 
                               FROM [Customers] ORDER BY [LastName]">
            </asp:SqlDataSource>
        </div>
        <div id="detailsview">
            <asp:DetailsView ID="DetailsView1" runat="server" Height="50px" Width="363px" AutoGenerateRows="False" DataKeyNames="Email" DataSourceID="SqlDataSource2" style="margin-left: 0px">
                <Fields>

                    <asp:TemplateField HeaderText="Email">

                        <ItemTemplate>

                            <asp:Label ID="lblEmailIT" runat="server" Text='<%# Bind("Email") %>'> 

                            </asp:Label>

                        </ItemTemplate>

                        <EditItemTemplate>
                            <asp:TextBox ID="lblEmailET" runat="server" Text='<%# Bind("Email") %>'>
                                </asp:TextBox>

                        </EditItemTemplate>

                        <InsertItemTemplate>
                            <asp:TextBox ID="txtEmailInT" runat="server" Text='<%# Bind("Email") %>'>
                            </asp:TextBox>

                            <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="txtEmailInT" ErrorMessage="Email is a required field.">

                            </asp:RequiredFieldValidator>


                        </InsertItemTemplate>

                        <HeaderStyle HorizontalAlign="Left" Width="100px" />
                        <ItemStyle Width="200px" />

                    </asp:TemplateField>



                    <asp:TemplateField HeaderText="LastName">

                        <ItemTemplate>

                            <asp:Label ID="lblLastNameIT" runat="server" Text='<%# Bind("LastName") %>'> 

                            </asp:Label>

                        </ItemTemplate>

                        <EditItemTemplate>
                            <asp:TextBox ID="lblLastNameET" runat="server" Text='<%# Bind("LastName") %>'>
                                </asp:TextBox>

                        </EditItemTemplate>

                        <InsertItemTemplate>
                            <asp:TextBox ID="lblLastNameInT" runat="server" Text='<%# Bind("LastName") %>'>
                            </asp:TextBox>

                        </InsertItemTemplate>

                        <HeaderStyle HorizontalAlign="Left" Width="100px" />
                        <ItemStyle Width="200px" />

                    </asp:TemplateField>


                     <asp:TemplateField HeaderText="FirstName">

                        <ItemTemplate>

                            <asp:Label ID="lblFirstNameIT" runat="server" Text='<%# Bind("FirstName") %>'> 

                            </asp:Label>

                        </ItemTemplate>

                        <EditItemTemplate>
                            <asp:TextBox ID="lblFirstNameET" runat="server" Text='<%# Bind("FirstName") %>'>
                                </asp:TextBox>

                        </EditItemTemplate>

                        <InsertItemTemplate>
                            <asp:TextBox ID="lblFirstNameInT" runat="server" Text='<%# Bind("FirstName") %>'>
                            </asp:TextBox>

                        </InsertItemTemplate>

                        <HeaderStyle HorizontalAlign="Left" Width="100px" />
                        <ItemStyle Width="200px" />

                    </asp:TemplateField>


                    <asp:TemplateField HeaderText="Address">

                        <ItemTemplate>

                            <asp:Label ID="lblAddressIT" runat="server" Text='<%# Bind("Address") %>'> 

                            </asp:Label>

                        </ItemTemplate>

                        <EditItemTemplate>
                            <asp:TextBox ID="lblAddressET" runat="server" Text='<%# Bind("Address") %>'>
                                </asp:TextBox>

                        </EditItemTemplate>

                        <InsertItemTemplate>
                            <asp:TextBox ID="lblAddressInT" runat="server" Text='<%# Bind("Address") %>'>
                            </asp:TextBox>

                        </InsertItemTemplate>

                        <HeaderStyle HorizontalAlign="Left" Width="100px" />
                        <ItemStyle Width="200px" />

                    </asp:TemplateField>




                    <asp:TemplateField HeaderText="City">

                        <ItemTemplate>

                            <asp:Label ID="lblCityIT" runat="server" Text='<%# Bind("City") %>'> 

                            </asp:Label>

                        </ItemTemplate>

                        <EditItemTemplate>
                            <asp:TextBox ID="lblCityET" runat="server" Text='<%# Bind("City") %>'>
                                </asp:TextBox>

                        </EditItemTemplate>

                        <InsertItemTemplate>
                            <asp:TextBox ID="lblCityInT" runat="server" Text='<%# Bind("City") %>'>
                            </asp:TextBox>

                        </InsertItemTemplate>

                        <HeaderStyle HorizontalAlign="Left" Width="100px" />
                        <ItemStyle Width="200px" />

                    </asp:TemplateField>




                    <asp:TemplateField HeaderText="State">

                        <ItemTemplate>

                            <asp:Label ID="lblStateIT" runat="server" Text='<%# Bind("State") %>'> 

                            </asp:Label>

                        </ItemTemplate>

                        <EditItemTemplate>
                            <asp:TextBox ID="lblStateET" runat="server" Text='<%# Bind("State") %>'>
                                </asp:TextBox>

                        </EditItemTemplate>

                        <InsertItemTemplate>
                            <asp:TextBox ID="lblStateInT" runat="server" Text='<%# Bind("State") %>'>
                            </asp:TextBox>

                        </InsertItemTemplate>

                        <HeaderStyle HorizontalAlign="Left" Width="100px" />
                        <ItemStyle Width="200px" />

                    </asp:TemplateField>



                    <asp:TemplateField HeaderText="ZipCode">

                        <ItemTemplate>

                            <asp:Label ID="lblZipCodeIT" runat="server" Text='<%# Bind("ZipCode") %>'> 

                            </asp:Label>

                        </ItemTemplate>

                        <EditItemTemplate>
                            <asp:TextBox ID="lblZipCodeET" runat="server" Text='<%# Bind("ZipCode") %>'>
                                </asp:TextBox>

                        </EditItemTemplate>

                        <InsertItemTemplate>
                            <asp:TextBox ID="lblZipCodeInT" runat="server" Text='<%# Bind("ZipCode") %>'>
                            </asp:TextBox>

                        </InsertItemTemplate>

                        <HeaderStyle HorizontalAlign="Left" Width="100px" />
                        <ItemStyle Width="200px" />

                    </asp:TemplateField>


                    <asp:TemplateField HeaderText="PhoneNumber">

                        <ItemTemplate>

                            <asp:Label ID="lblPhoneNumberIT" runat="server" Text='<%# Bind("PhoneNumber") %>'> 

                            </asp:Label>

                        </ItemTemplate>

                        <EditItemTemplate>
                            <asp:TextBox ID="lblPhoneNumberET" runat="server" Text='<%# Bind("PhoneNumber") %>'>
                                </asp:TextBox>

                        </EditItemTemplate>

                        <InsertItemTemplate>
                            <asp:TextBox ID="lblPhoneNumberInT" runat="server" Text='<%# Bind("PhoneNumber") %>'>
                            </asp:TextBox>

                        </InsertItemTemplate>

                        <HeaderStyle HorizontalAlign="Left" Width="100px" />
                        <ItemStyle Width="200px" />

                    </asp:TemplateField>


                    <asp:CommandField ButtonType="Button" ShowDeleteButton="true" ShowEditButton="true" ShowInsertButton="true" />

                </Fields>
            </asp:DetailsView>
            <asp:ValidationSummary ID="ValidationSummary1" runat="server" 
                HeaderText="Please correct the following errors:" CssClass="error" />
            <p>
                <asp:Label ID = "lblError" runat="server" EnableViewState="False" CssClass="error">
                </asp:Label>
            </p>
        </div>
    </form>
    </section>
</body>
</html>

Answer 1

是的，在Page_Load方法插入

下的后面代码中

if(!Page.IsPostBack)
{
   GridView1.DataBind();
}

Answer 2

您必须将此事件用于此事件，您可以绑定Gridview并重定向同一页面，您的数据将反映在Gridview上希望这有助于尝试这个......

protected void DetailsView1_ItemUpdated（object sender，DetailsViewUpdatedEventArgs e） { if（e.AffectedRows == 1） { GridView1.DataBind（）; 的Response.Redirect（ “Yourpage.aspx”）; } }

ASP.NET 4.5 GridView和DetailsView

2 个答案: