ASP.NET―001:GridView绑定List、页面返回值具体实现_实用技巧

用惯了WPF的绑定，ASP.NET的绑定貌似不是很好用。下面看看ASP.NET绑定的用法。一般来说可以直接绑定DataTable的，不过我觉得绑定List比较符合面向对象编程。
绑定的方法是两句代码：

复制代码 代码如下:

GridView名.DataSource = List<自定义类>; 

GridView名.DataBind(); 

直接看例子吧，以下是一个绑定一个PersonModel类的例子。其中用到了页面返回参数，使用js传递，js可写在前端也可直接写在后台代码里。
项目结构：

效果：

实体类

复制代码 代码如下:

public class PersonModel
    {
        private int personIndex;

        public int PersonIndex
        {
            get { return personIndex; }

            set { personIndex = value; }
        }

        private string personID;

        public string PersonID
        {
            get { return personID; }

            set { personID = value; }
        }

        private string personName;

        public string PersonName
        {
            get { return personName; }

            set { personName = value; }
        }

        private string personSex;

        public string PersonSex
        {
            get { return personSex; }

            set { personSex = value; }
        }

        private int personAge;

        public int PersonAge
        {
            get { return personAge; }

            set { personAge = value; }
        }

        private bool personSelected = false;

        public bool PersonSelected
        {
            get { return personSelected; }

            set { personSelected = value; }
        }
    }

针对绑定的aspx页面写一个管理类，用于操作数据

复制代码 代码如下:

public class ChildFrmManager
    {
        private List<PersonModel> personCollect = new List<PersonModel>();

        private static ChildFrmManager instance = null;

        public List<PersonModel> PersonCollect
        {
            get { return personCollect; }

            set { personCollect = value; }
        }

        public static ChildFrmManager DoGetInstance()
        {
            if (instance == null)
            {
                instance = new ChildFrmManager();
            }

            return instance;
        }

        public void DoAddPersons()
        {
            for (int i = 0; i < 20; i++)
            {
                PersonModel model = new PersonModel();

                model.PersonIndex = i + 1;

                model.PersonID = System.Guid.NewGuid().ToString();

                model.PersonName = "测试" + i;

                model.PersonAge = 27 + i;

                model.PersonSex = i % 2 == 0 ? "男" : "女";

                model.PersonSelected = false;

                this.PersonCollect.Add(model);
            }
        }
    }

绑定的页面前端

复制代码 代码如下:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="ChildFrm.aspx.cs" Inherits="ASPNetGridView.Pages.ChildFrm" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<<body id="MyBody" runat="server" ms_positioning="GridLayout">
    <form id="Form1" runat="server" method="post">
    <div>
    <asp:GridView ID="dgPersons" runat="server" AutoGenerateColumns="False"
     EnableViewState="false"
    CellPadding="4"  ForeColor="#333333" DataKeyNames="PersonID"
     OnSelectedIndexChanged="Selcted_Click">
     <Columns>
       <asp:CommandField ShowSelectButton="True" /> 
       <asp:BoundField DataField="PersonIndex" HeaderText="序号"/>
       <asp:TemplateField>
       <ItemTemplate>
       <input id="radiobutton1" name="pselect" type="radio" />
       </ItemTemplate>
       </asp:TemplateField>
       <asp:BoundField DataField="PersonName" HeaderText="姓名" />
       <asp:BoundField DataField="PersonAge" HeaderText="年龄" />
       <asp:BoundField DataField="PersonSex" HeaderText="性别" />
     </Columns>
        <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
            <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
            <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
            <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
            <EditRowStyle BackColor="#999999" />
            <AlternatingRowStyle BackColor="White" ForeColor="#284775" />

    </asp:GridView>
    </div>
    </form>
</body>
</html>

绑定页面后台

复制代码 代码如下:

 public partial class ChildFrm : System.Web.UI.Page
    {
        private ChildFrmManager dManager = null;

        protected PersonModel selectItem = null;

        protected void Page_Load(object sender, EventArgs e)
        {
            dManager = ChildFrmManager.DoGetInstance();

            if (!IsPostBack)
            {
                dManager.DoAddPersons();

                this.dgPersons.DataSource = dManager.PersonCollect;

                this.dgPersons.DataBind();
            }
        }

        protected void Selcted_Click(object sender, EventArgs e)
        {
            int selectIndex = this.dgPersons.SelectedIndex;

            foreach (PersonModel mitem in dManager.PersonCollect)
            {
                if (mitem.PersonIndex - 1 == selectIndex)
                {
                    mitem.PersonSelected = true;
                }
                else
                {
                    mitem.PersonSelected = false;
                }
            }

            selectItem = dManager.PersonCollect[selectIndex];

            string vbCrLf = " ";

            string strScript = "<script>" + vbCrLf;

            strScript += "window.parent.returnValue='" + selectItem.PersonName + "';" + vbCrLf;

            strScript += "window.parent.close();" + vbCrLf;

            strScript += "</script>" + vbCrLf;

            if (!IsClientScriptBlockRegistered("clientScript"))
            {
                RegisterClientScriptBlock("clientScript", strScript);
            }
        }
    }

承载绑定页面的页面

复制代码 代码如下:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="FrameFrm.aspx.cs" Inherits="ASPNetGridView.Pages.FrameFrm" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<frameset rows="0,*">
    <frame src="about:blank">
    <frame src="ChildFrm.aspx">
  </frameset>
</html>

主页面，获取返回值的js在前端

复制代码 代码如下:

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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <div align="center">
        <form id="Form1" runat="server" method="post">
            <table runat="server">
              <tr>
                  <td>
                  <asp:Label ID="Label1" runat="server" Font-Bold="true">选择结果</asp:Label>
                  </td>

                  <td>
                  <asp:TextBox ID="txtShowReturnValue" runat="server" Width="100px" />
                  </td>
                  <td>
                  <asp:Button ID="btnOpenNewFrm" runat="server" Text="选择" Width="60px" OnClientClick="OpenNewWindow()"/>
                  </td>
              </tr>
            </table>
        </form>
    </div>
</body>
<script type ='text/javascript'>
    function OpenNewWindow() {

        var str = window.showModalDialog('Pages/FrameFrm.aspx', document.Form1.txtShowReturnValue.value, 'dialogWidth=1000px;dialogHeight=900px', 'scroll:yes');

        if (str != null)
        { document.Form1.txtShowReturnValue.value = str; }
    }
</script>
</html>

代码下载

时间： 2024-11-03 09:34:17

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