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ASP.NET—001：GridView绑定List、页面返回值

2014-02-17 23:11 351 查看

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>

代码下载

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