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ASP.NET―001:GridView绑定List、页面返回值具体实现

发布时间：2023-02-28 04:58:19 来源：好代码

.

我发现我好像变了，原来每当人成长的时候都会改变。生命本该有意义，我们绝不是白来一场。

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：


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


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


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


<%@ 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


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


<%@ 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


<%@ 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>