隐藏或显示GridView控件列 Version 2

本篇版本是演示GridView的属性AutoGenerateColumns="true" 。不管怎样，先来看看最终的效果吧：



哇，是怎样实现的？
先在站点准备好一个对象，由于没有经数据库，只有准备好对象，来存储数据了。Insus.NET想，此点你没有什么问题才对。

Insus.NET.CollectionObject

using System;using System.Collections.Generic;using System.Linq;using System.Web;/// <summary>/// Summary description for CollectionObject/// </summary>namespace Insus.NET{    public class CollectionObject    {        private string _Field1;        private string _Field2;        private string _Field3;        private string _Field4;        private string _Field5;        private string _Field6;        public string Field1        {            get { return _Field1; }            set { _Field1 = value; }        }        public string Field2        {            get { return _Field2; }            set { _Field2 = value; }        }        public string Field3        {            get { return _Field3; }            set { _Field3 = value; }        }        public string Field4        {            get { return _Field4; }            set { _Field4 = value; }        }        public string Field5        {            get { return _Field5; }            set { _Field5 = value; }        }        public string Field6        {            get { return _Field6; }            set { _Field6 = value; }        }        public CollectionObject()        {            //            // TODO: Add constructor logic here            //        }        public CollectionObject(string field1, string field2, string field3, string field4, string field5, string field6)        {            this._Field1 = field1;            this._Field2 = field2;            this._Field3 = field3;            this._Field4 = field4;            this._Field5 = field5;            this._Field6 = field6;        }    }}

对象写好了，那接下来是填充数据入这个对象中，如果你在网页中准备，得先引用命名空间usingInsus.NET因为写类别时，就添加有此命名空间。

View Code

 private List<CollectionObject> GetCollectionObject()    {        List<CollectionObject> co = new List<CollectionObject>();        co.Add(new CollectionObject("row 1 column1", "row 1 column2", "row 1 column3", "row 1 column4", "row 1 column5", "row 1 column6"));        co.Add(new CollectionObject("row 2 column1", "row 2 column2", "row 2 column3", "row 2 column4", "row 2 column5", "row 2 column6"));        co.Add(new CollectionObject("row 3 column1", "row 3 column2", "row 3 column3", "row 3 column4", "row 3 column5", "row 3 column6"));        co.Add(new CollectionObject("row 4 column1", "row 4 column2", "row 4 column3", "row 4 column4", "row 4 column5", "row 4 column6"));        co.Add(new CollectionObject("row 5 column1", "row 5 column2", "row 5 column3", "row 5 column4", "row 5 column5", "row 5 column6"));        return co;    }

OK，你在网页的.aspx中，拉一个Gridview控件：

 <asp:GridView ID="GridView1" runat="server"></asp:GridView>

然后去，后台.aspx.cs写绑定数据给这个GridView 控件。

下面开始实现列隐藏与显示功能：
在.aspx网页中放一个DropDownList控件：



开发ASP.NET网页，就是不停在.aspx 与.aspx.cs之间切换写程序。现在去.aspx.cs写DropDownList控件的OnSelectedIndexChanged事件。写此事件之前，先写一个函数，就是隐藏GridView列的函数：



下面是写到OnSelectedIndexChanged事件：

完成了，理论方面，不必多过讲解，代码相信你可以一目了然。有关这个功能，如果你有任何问题，可以留言。谢谢。

以下内容于2013-05-09 12：55补充：
上面方法，把GridView改为AutoGenerateColumns="false" 也行喔！

View Code

<asp:GridView ID="GridView1" runat="server"  AutoGenerateColumns="false" >                <Columns>                    <asp:BoundField DataField="Field1"  HeaderText="Field1" />                    <asp:BoundField DataField="Field2"   HeaderText="Field2"/>                    <asp:BoundField DataField="Field3"   HeaderText="Field3"/>                    <asp:BoundField DataField="Field4"   HeaderText="Field4"/>                    <asp:BoundField DataField="Field5"   HeaderText="Field5"/>                    <asp:BoundField DataField="Field6"   HeaderText="Field6"/>                </Columns>            </asp:GridView>

 或是如下写法也没有问题：

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 <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">                <Columns>                    <asp:TemplateField>                        <HeaderTemplate>                            Field1                        </HeaderTemplate>                        <ItemTemplate>                            <%# Eval("Field1") %>                        </ItemTemplate>                    </asp:TemplateField>                    <asp:TemplateField>                        <HeaderTemplate>                            Field2                        </HeaderTemplate>                        <ItemTemplate>                            <%# Eval("Field2") %>                        </ItemTemplate>                    </asp:TemplateField>                    <asp:TemplateField>                        <HeaderTemplate>                            Field3                        </HeaderTemplate>                        <ItemTemplate>                            <%# Eval("Field3") %>                        </ItemTemplate>                    </asp:TemplateField>                    <asp:TemplateField>                        <HeaderTemplate>                            Field4                        </HeaderTemplate>                        <ItemTemplate>                            <%# Eval("Field4") %>                        </ItemTemplate>                    </asp:TemplateField>                    <asp:TemplateField>                        <HeaderTemplate>                            Field5                        </HeaderTemplate>                        <ItemTemplate>                            <%# Eval("Field5") %>                        </ItemTemplate>                    </asp:TemplateField>                    <asp:TemplateField>                        <HeaderTemplate>                            Field6                        </HeaderTemplate>                        <ItemTemplate>                            <%# Eval("Field6") %>                        </ItemTemplate>                    </asp:TemplateField>                </Columns>            </asp:GridView>

可以说得上此方法完全替代第一个版本。