DevExpress ASP.NET 使用经验谈（8）-ASPxGridView自定义列和基本事件

2022-05-13 12:16:40

为演示本节示例，我们在原来Users表增加【性别Gender】、【兴趣爱好Hobbies】，【CreateTime创建时间】，【ModifyTime】修改时间这4个字段，

ALTER TABLE [dbo].[Users] add [Gender] varchar(10) NULL

GO

ALTER TABLE [dbo].[Users] add [Hobbies] varchar(50) NULL

GO

ALTER TABLE [dbo].[Users] add [CreateTime] datetime NULL

GO

ALTER TABLE [dbo].[Users] add [ModifyTime] datetime NULL

完成建表语句如下：

CREATE TABLE [dbo].[Users] (

    [UserID] int IDENTITY(1, 1) NOT NULL,

    [UserName] nvarchar(50) NULL,

    [FirstName] nvarchar(50) NULL,

    [LastName] nvarchar(50) NULL,

    [MiddleName] nvarchar(50) NULL,

    [EmailID] nvarchar(50) NULL,

    [Gender] varchar(10) NULL,

    [Hobbies] varchar(50) NULL,

    [ModifyTime] datetime NULL,

    [CreateTime] datetime NULL,

    CONSTRAINT [PK_Users] PRIMARY KEY ([UserID])

)

【性别】：我们选择ASPxGridView的GridViewDataComboBoxColumn列类型，通过如下代码实现下拉选择性别“男”和“女”。

 <dx:GridViewDataComboBoxColumn FieldName="Gender" VisibleIndex="6" Caption="性别" Width="80px">

                        <EditFormSettings VisibleIndex="4" Visible="True" Caption="性别" />

                        <CellStyle HorizontalAlign="Center" />

                        <HeaderStyle HorizontalAlign="Center" />

                        <PropertiesComboBox>

                            <Items>

                                <dx:ListEditItem Text="男" Value="男" />

                                <dx:ListEditItem Text="女" Value="女" />

                            </Items>

                        </PropertiesComboBox>

</dx:GridViewDataComboBoxColumn>

【兴趣爱好】：通过编辑模板EditItemTemplate，建立自定义的兴趣爱好CheckBox选项的模板列。

 <dx:GridViewDataTextColumn FieldName="Hobbies" VisibleIndex="7" Caption="兴趣爱好" Width="100px">

                        <EditFormSettings VisibleIndex="5" Visible="True" Caption="兴趣爱好" />

                        <CellStyle HorizontalAlign="Center" />

                        <HeaderStyle HorizontalAlign="Center" />

                        <EditItemTemplate>

                            <table border="0">

                                <tr>

                                    <td>

                                        <dx:ASPxCheckBox ID="ASPxCheckBox_H1" runat="server" ClientInstanceName="cb_hob1" Text="阅读" Layout="Flow" OnInit="ASPxCheckBox_Hobbies_Init">

                                        </dx:ASPxCheckBox>

                                    </td>

                                    <td> </td>

                                    <td>

                                        <dx:ASPxCheckBox ID="ASPxCheckBox_H2" ClientInstanceName="cb_hob2" runat="server" Text="思考" Layout="Flow" OnInit="ASPxCheckBox_Hobbies_Init">

                                        </dx:ASPxCheckBox>

                                    </td>

                                    <td> </td>

                                    <td>

                                        <dx:ASPxCheckBox ID="ASPxCheckBox_H3" runat="server" ClientInstanceName="cb_hob3" Text="运动" Layout="Flow" OnInit="ASPxCheckBox_Hobbies_Init">

                                        </dx:ASPxCheckBox>

                                    </td>

                                    <td> </td>

                                    <td>

                                        <dx:ASPxCheckBox ID="ASPxCheckBox_H4" runat="server" ClientInstanceName="cb_hob4" Text="社交" Layout="Flow" OnInit="ASPxCheckBox_Hobbies_Init">

                                        </dx:ASPxCheckBox>

                                    </td>

                                </tr>

                            </table>

                        </EditItemTemplate>

</dx:GridViewDataTextColumn>

【 创建时间】与【修改时间】在界面上均不显示，分别记录每条数据的创建时间和最后一次修改时间。

 <dx:GridViewDataDateColumn FieldName="CreateTime" VisibleIndex="7" Caption="创建时间" Width="100px" Visible="false">

                        <EditFormSettings VisibleIndex="5" Visible="False" Caption="创建时间" />

                        <CellStyle HorizontalAlign="Center" />

                        <HeaderStyle HorizontalAlign="Center" />

                    </dx:GridViewDataDateColumn>

<dx:GridViewDataDateColumn FieldName="ModifyTime" VisibleIndex="7" Caption="修改时间" Width="100px" Visible="false">

                        <EditFormSettings VisibleIndex="5" Visible="True" Caption="修改时间" />

                        <CellStyle HorizontalAlign="Center" />

                        <HeaderStyle HorizontalAlign="Center" />

</dx:GridViewDataDateColumn>

关于这4个字段的后台赋值，我们暂先放一边，来看一下，目前编辑界面的效果。

DevExpress ASP.NET 使用经验谈（8）-ASPxGridView自定义列和基本事件

图一 添加字段后的编辑页

【性别】字段，可以直接下拉选择并保存，但是【兴趣爱好】选项选取后保存无效，【创建时间】，【修改时间】因为并未开放编辑，且后台并未赋值，

所以仍为空值。那么如何才能保存这三个字段呢？

这里我们就要利用ASPxGridView的OnRowInserting事件、OnRowUpdating事件来执行赋值和保存。

DevExpress ASP.NET 使用经验谈（8）-ASPxGridView自定义列和基本事件

后台OnRowInserting事件代码如下：

 protected void ASPxGridView1_RowInserting(object sender, DevExpress.Web.Data.ASPxDataInsertingEventArgs e)

    {

        //在RowInserting时，将当前时间赋值给“创建时间列”CreateTime赋值

        e.NewValues["CreateTime"] = DateTime.Now;

        GridViewDataColumn columnHobbies = ASPxGridView1.Columns["Hobbies"] as GridViewDataColumn; //取出GridView的Column

        //通过ASPxGridView1.FindEditRowCellTemplateControl找出自定义的CheckBox

        ASPxCheckBox cbH1 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H1") as ASPxCheckBox);

        ASPxCheckBox cbH2 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H2") as ASPxCheckBox);

        ASPxCheckBox cbH3 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H3") as ASPxCheckBox);

        ASPxCheckBox cbH4 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H4") as ASPxCheckBox);

        ArrayList listHobbies = new ArrayList();

        if (cbH1.Checked == true)

        {

            listHobbies.Add(cbH1.Text);

        }

        if (cbH2.Checked == true)

        {

            listHobbies.Add(cbH2.Text);

        }

        if (cbH3.Checked == true)

        {

            listHobbies.Add(cbH3.Text);

        }

        if (cbH4.Checked == true)

        {

            listHobbies.Add(cbH4.Text);

        }

        //通过 e.NewValues["Hobbies"]赋值

        e.NewValues["Hobbies"] = string.Join(",", listHobbies.ToArray());

    }

我们可以通过e.NewValues["列名"]赋值来存取数据，通过ASPxGridView1.FindEditRowCellTemplateControl方法，可以找到模板列中的

自定义控件。

同理，后台RowUpdating事件如下：

 protected void ASPxGridView1_RowUpdating(object sender, DevExpress.Web.Data.ASPxDataUpdatingEventArgs e)

    {

        //在RowUpdating时，将当前时间赋值给“创建时间列”ModifyTime赋值

        e.NewValues["ModifyTime"] = DateTime.Now;

        GridViewDataColumn columnHobbies = ASPxGridView1.Columns["Hobbies"] as GridViewDataColumn;//取出GridView的Column

        //通过ASPxGridView1.FindEditRowCellTemplateControl找出自定义的CheckBox

        ASPxCheckBox cbH1 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H1") as ASPxCheckBox);

        ASPxCheckBox cbH2 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H2") as ASPxCheckBox);

        ASPxCheckBox cbH3 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H3") as ASPxCheckBox);

        ASPxCheckBox cbH4 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H4") as ASPxCheckBox);

        ArrayList listHobbies = new ArrayList();

        if (cbH1.Checked == true)

        {

            listHobbies.Add(cbH1.Text);

        }

        if (cbH2.Checked == true)

        {

            listHobbies.Add(cbH2.Text);

        }

        if (cbH3.Checked == true)

        {

            listHobbies.Add(cbH3.Text);

        }

        if (cbH4.Checked == true)

        {

            listHobbies.Add(cbH4.Text);

        }

        //通过 e.NewValues["Hobbies"]赋值

        e.NewValues["Hobbies"] = string.Join(",", listHobbies.ToArray());

    }

通过上面代码，我们已经能将【兴趣爱好】、【创建时间】、【修改时间】的数据保存到数据库，但是再次编辑时，【兴趣爱好】列数据并未绑定控件，

这时，就需要用到ASPxCheckBox控件的OnInit事件。

 <dx:ASPxCheckBox ID="ASPxCheckBox_H2" ClientInstanceName="cb_hob2" runat="server" Text="思考" Layout="Flow" OnInit="ASPxCheckBox_Hobbies_Init">

 </dx:ASPxCheckBox>

ASPxCheckBox_Hobbies_Init事件代码如下：

    protected void ASPxCheckBox_Hobbies_Init(object sender, EventArgs e)

    {

        ASPxCheckBox cblHb = sender as ASPxCheckBox;

        GridViewEditItemTemplateContainer container = cblHb.NamingContainer as GridViewEditItemTemplateContainer;

        string strHobbies = string.Empty;

        if (DataBinder.Eval(container.DataItem, "Hobbies") != null)

            strHobbies = DataBinder.Eval(container.DataItem, "Hobbies").ToString().Trim();

        if (strHobbies.Contains(cblHb.Text))

        {

            cblHb.Checked = true;

        }

    }

此时，我们新增一条数据，录入信息如下，点击保存，再次点击编辑图标打开编辑界面，已经显示【兴趣爱好】列的选择状态数据绑定，因为是

新增数据，所以【修改时间】为空。

DevExpress ASP.NET 使用经验谈（8）-ASPxGridView自定义列和基本事件

图二 增加后台取值赋值代码，执行新增并保存后的界面

再次编辑，修改【兴趣爱好】选项，取消“运动“选项，增加”思考“选项，再保存，这时【修改时间】更新。

DevExpress ASP.NET 使用经验谈（8）-ASPxGridView自定义列和基本事件

图三 再执行编辑并保存后的界面

最后贴出完整代码：

1、前台ASPX页面代码：

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

<%@ Register Assembly="DevExpress.Xpo.v12.2.Web, Version=12.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" Namespace="DevExpress.Xpo" TagPrefix="dx" %>

<%@ Register Assembly="DevExpress.Web.v12.2, Version=12.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" Namespace="DevExpress.Web.ASPxGridView" TagPrefix="dx" %>

<%@ Register Assembly="DevExpress.Web.v12.2, Version=12.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" Namespace="DevExpress.Web.ASPxEditors" TagPrefix="dx" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

    <title></title>

</head>

<body>

    <form id="form1" runat="server">

        <div>

            <p>

                <h1>ASPxGridView自定义列和事件</h1>

            </p>

            <dx:ASPxGridView ID="ASPxGridView1" runat="server" AutoGenerateColumns="False"

                OnRowInserting="ASPxGridView1_RowInserting"

                OnRowUpdating="ASPxGridView1_RowUpdating"

                DataSourceID="XpoDataSource1" KeyFieldName="UserID" Theme="Aqua">

                <Columns>

                    <dx:GridViewCommandColumn VisibleIndex="0" ButtonType="Image" Width="80px">

                        <EditButton Visible="true">

                            <Image ToolTip="编辑" Url="Assets/images/edit.png"></Image>

                        </EditButton>

                        <NewButton Visible="true">

                            <Image ToolTip="新增" Url="Assets/images/new.png"></Image>

                        </NewButton>

                        <DeleteButton Visible="true">

                            <Image ToolTip="删除" Url="Assets/images/delete.png"></Image>

                        </DeleteButton>

                        <UpdateButton Visible="true">

                            <Image ToolTip="保存" Url="Assets/images/save.gif"></Image>

                        </UpdateButton>

                        <CancelButton Visible="true">

                            <Image ToolTip="取消" Url="Assets/images/cancel.gif"></Image>

                        </CancelButton>

                    </dx:GridViewCommandColumn>

                    <dx:GridViewDataTextColumn FieldName="UserID" ReadOnly="True" VisibleIndex="1" Visible="false">

                    </dx:GridViewDataTextColumn>

                    <dx:GridViewDataTextColumn FieldName="UserName" VisibleIndex="2" Caption="用户姓名" >

                        <EditFormSettings VisibleIndex="2" Visible="True" Caption="用户姓名" />

                    </dx:GridViewDataTextColumn>

                    <dx:GridViewDataTextColumn FieldName="FirstName" VisibleIndex="3" Caption="名" Width="80px">

                        <EditFormSettings VisibleIndex="3" Visible="True" Caption="名" />

                        <CellStyle HorizontalAlign="Center" />

                        <HeaderStyle HorizontalAlign="Center" />

                    </dx:GridViewDataTextColumn>

                    <dx:GridViewDataTextColumn FieldName="LastName" VisibleIndex="4" Caption="姓" Width="80px">

                        <EditFormSettings VisibleIndex="4" Visible="True" Caption="姓" />

                        <CellStyle HorizontalAlign="Center" />

                        <HeaderStyle HorizontalAlign="Center" />

                    </dx:GridViewDataTextColumn>

                    <dx:GridViewDataTextColumn FieldName="MiddleName" VisibleIndex="5" Caption="教名" Width="100px">

                        <EditFormSettings VisibleIndex="5" Visible="False" Caption="教名" />

                        <CellStyle HorizontalAlign="Center" />

                        <HeaderStyle HorizontalAlign="Center" />

                    </dx:GridViewDataTextColumn>

                    <dx:GridViewDataComboBoxColumn FieldName="Gender" VisibleIndex="6" Caption="性别" Width="80px">

                        <EditFormSettings VisibleIndex="4" Visible="True" Caption="性别" />

                        <CellStyle HorizontalAlign="Center" />

                        <HeaderStyle HorizontalAlign="Center" />

                        <PropertiesComboBox>

                            <Items>

                                <dx:ListEditItem Text="男" Value="男" />

                                <dx:ListEditItem Text="女" Value="女" />

                            </Items>

                        </PropertiesComboBox>

                    </dx:GridViewDataComboBoxColumn>

                    <dx:GridViewDataTextColumn FieldName="Hobbies" VisibleIndex="7" Caption="兴趣爱好" Width="100px">

                        <EditFormSettings VisibleIndex="5" Visible="True" Caption="兴趣爱好" />

                        <CellStyle HorizontalAlign="Center" />

                        <HeaderStyle HorizontalAlign="Center" />

                        <EditItemTemplate>

                            <table border="0">

                                <tr>

                                    <td>

                                        <dx:ASPxCheckBox ID="ASPxCheckBox_H1" runat="server" ClientInstanceName="cb_hob1" Text="阅读" Layout="Flow" OnInit="ASPxCheckBox_Hobbies_Init">

                                        </dx:ASPxCheckBox>

                                    </td>

                                    <td> </td>

                                    <td>

                                        <dx:ASPxCheckBox ID="ASPxCheckBox_H2" ClientInstanceName="cb_hob2" runat="server" Text="思考" Layout="Flow" OnInit="ASPxCheckBox_Hobbies_Init">

                                        </dx:ASPxCheckBox>

                                    </td>

                                    <td> </td>

                                    <td>

                                        <dx:ASPxCheckBox ID="ASPxCheckBox_H3" runat="server" ClientInstanceName="cb_hob3" Text="运动" Layout="Flow" OnInit="ASPxCheckBox_Hobbies_Init">

                                        </dx:ASPxCheckBox>

                                    </td>

                                    <td> </td>

                                    <td>

                                        <dx:ASPxCheckBox ID="ASPxCheckBox_H4" runat="server" ClientInstanceName="cb_hob4" Text="社交" Layout="Flow" OnInit="ASPxCheckBox_Hobbies_Init">

                                        </dx:ASPxCheckBox>

                                    </td>

                                </tr>

                            </table>

                        </EditItemTemplate>

                    </dx:GridViewDataTextColumn>

                    <dx:GridViewDataTextColumn FieldName="EmailID" VisibleIndex="6" Caption="邮箱" Width="200px">

                        <EditFormSettings VisibleIndex="6" Visible="True" Caption="邮箱" ColumnSpan="2" />

                    </dx:GridViewDataTextColumn>

                    <dx:GridViewDataDateColumn FieldName="CreateTime" VisibleIndex="7" Caption="创建时间" Width="100px" >

                        <EditFormSettings VisibleIndex="5" Visible="False" Caption="创建时间" />

                        <CellStyle HorizontalAlign="Center" />

                        <HeaderStyle HorizontalAlign="Center" />

                    </dx:GridViewDataDateColumn>

                    <dx:GridViewDataDateColumn FieldName="ModifyTime" VisibleIndex="7" Caption="修改时间" Width="100px" >

                        <EditFormSettings VisibleIndex="5" Visible="False" Caption="修改时间" />

                        <CellStyle HorizontalAlign="Center" />

                        <HeaderStyle HorizontalAlign="Center" />

                    </dx:GridViewDataDateColumn>

                </Columns>

                <SettingsBehavior ConfirmDelete="true" AllowFocusedRow="true" AllowSelectSingleRowOnly="true" AllowSelectByRowClick="true" />

                <SettingsEditing EditFormColumnCount="2" />

                <Settings ShowFooter="True" />

                <SettingsText EmptyDataRow="无记录" ConfirmDelete="确定删除吗？" />

                <SettingsPager Mode="ShowPager" PageSize="3" />

            </dx:ASPxGridView>

        </div>

        <dx:XpoDataSource ID="XpoDataSource1" runat="server" TypeName="XPOModel.DemoDB.Users"></dx:XpoDataSource>

    </form>

</body>

</html>

2、后台代码：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Configuration;

using DevExpress.Xpo;

using DevExpress.Xpo.DB;

using DevExpress.Web.ASPxGridView;

using DevExpress.Web.ASPxEditors;

using System.Collections;

public partial class _Default : System.Web.UI.Page

{

    protected void Page_Init(object sender, EventArgs e)

    {

        string provider = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;//获取数据库连接

        IDataLayer datalayer = new SimpleDataLayer(XpoDefault.GetConnectionProvider(provider, AutoCreateOption.DatabaseAndSchema));//建立数据层XPO独有的

        DevExpress.Xpo.Session session = new DevExpress.Xpo.Session(datalayer); //将数据层和会话绑定

        XpoDataSource1.Session = session;

    }

    protected void Page_Load(object sender, EventArgs e)

    {

    }

    protected void ASPxCheckBox_Hobbies_Init(object sender, EventArgs e)

    {

        ASPxCheckBox cblHb = sender as ASPxCheckBox;

        GridViewEditItemTemplateContainer container = cblHb.NamingContainer as GridViewEditItemTemplateContainer;

        string strHobbies = string.Empty;

        if (DataBinder.Eval(container.DataItem, "Hobbies") != null)

            strHobbies = DataBinder.Eval(container.DataItem, "Hobbies").ToString().Trim();

        if (strHobbies.Contains(cblHb.Text))

        {

            cblHb.Checked = true;

        }

    }

    protected void ASPxGridView1_RowInserting(object sender, DevExpress.Web.Data.ASPxDataInsertingEventArgs e)

    {

        //在RowInserting时，将当前时间赋值给“创建时间列”CreateTime赋值

        e.NewValues["CreateTime"] = DateTime.Now;

        GridViewDataColumn columnHobbies = ASPxGridView1.Columns["Hobbies"] as GridViewDataColumn; //取出GridView的Column

        //通过ASPxGridView1.FindEditRowCellTemplateControl找出自定义的CheckBox

        ASPxCheckBox cbH1 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H1") as ASPxCheckBox);

        ASPxCheckBox cbH2 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H2") as ASPxCheckBox);

        ASPxCheckBox cbH3 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H3") as ASPxCheckBox);

        ASPxCheckBox cbH4 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H4") as ASPxCheckBox);

        ArrayList listHobbies = new ArrayList();

        if (cbH1.Checked == true)

        {

            listHobbies.Add(cbH1.Text);

        }

        if (cbH2.Checked == true)

        {

            listHobbies.Add(cbH2.Text);

        }

        if (cbH3.Checked == true)

        {

            listHobbies.Add(cbH3.Text);

        }

        if (cbH4.Checked == true)

        {

            listHobbies.Add(cbH4.Text);

        }

        //通过 e.NewValues["Hobbies"]赋值

        e.NewValues["Hobbies"] = string.Join(",", listHobbies.ToArray());

    }

    protected void ASPxGridView1_RowUpdating(object sender, DevExpress.Web.Data.ASPxDataUpdatingEventArgs e)

    {

        //在RowUpdating时，将当前时间赋值给“创建时间列”ModifyTime赋值

        e.NewValues["ModifyTime"] = DateTime.Now;

        GridViewDataColumn columnHobbies = ASPxGridView1.Columns["Hobbies"] as GridViewDataColumn;//取出GridView的Column

        //通过ASPxGridView1.FindEditRowCellTemplateControl找出自定义的CheckBox

        ASPxCheckBox cbH1 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H1") as ASPxCheckBox);

        ASPxCheckBox cbH2 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H2") as ASPxCheckBox);

        ASPxCheckBox cbH3 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H3") as ASPxCheckBox);

        ASPxCheckBox cbH4 = (ASPxGridView1.FindEditRowCellTemplateControl(columnHobbies, "ASPxCheckBox_H4") as ASPxCheckBox);

        ArrayList listHobbies = new ArrayList();

        if (cbH1.Checked == true)

        {

            listHobbies.Add(cbH1.Text);

        }

        if (cbH2.Checked == true)

        {

            listHobbies.Add(cbH2.Text);

        }

        if (cbH3.Checked == true)

        {

            listHobbies.Add(cbH3.Text);

        }

        if (cbH4.Checked == true)

        {

            listHobbies.Add(cbH4.Text);

        }

        //通过 e.NewValues["Hobbies"]赋值

        e.NewValues["Hobbies"] = string.Join(",", listHobbies.ToArray());

    }

}

源码下载:http://pan.baidu.com/s/1hqziMNE

博文作者：挪威森林（Coding of life）

博文出处：http://www.cnblogs.com/allenlf/

主要研究：Web开发框架、ORM、WCF、医疗行业软件开发（HRP、EMR、CP、OA）

版权归挪威森林和博客园所有，转载请注明出处，谢谢合作

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