ASP.NET2.0_执行页面发送的强类型方法与弱类型方法
强类型方法.
1,先在源页面代码块中,声明一个公共属性;
2,再在宿页面呈现块中,添加一个<% PreviousPageType %>指令,在其中指定VirtualPath属性
3,最后在宿页面代码块中,用PreviousPage直接调用源页面代码块的公共属性即可.
例子如下:
源页面
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Typed.aspx.cs" Inherits="Typed" %>
<!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>强类型方法</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="Label1" runat="server" AssociatedControlID="TextBox1" Text="姓名："></asp:Label>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" PostBackUrl="~/TestTyped.aspx"
Text="完成" /></div>
</form>
</body>
</html>
public partial class Typed : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
public string UserName
{
get
{
return this.TextBox1.Text.ToString();
}
}
protected void Button1_Click(object sender, EventArgs e)
{
}
}
宿页面
protected void Page_Load(object sender, EventArgs e)
{
if (PreviousPage != null)
{
Response.Write(string.Format("欢迎{0}使用执行跨页面发送数据的强类型方法!", PreviousPage.UserName));
}
}
弱类型方法:
1,在宿页面代码块中,用PreviousPage的FindControl方法得到相应的控件,再转换;
2.最后调用此转换后的控件属性即可.
例子如下:
源页面
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Untyped.aspx.cs" Inherits="_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>弱类型方法</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="Label1" runat="server" Text="姓名：" AssociatedControlID="TextBox1"></asp:Label>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="完成" PostBackUrl="~/TestUntyped.aspx" OnClick="Button1_Click"/></div>
</form>
</body>
</html>
protected void Page_Load(object sender, EventArgs e)
{
if (PreviousPage != null)
{
TextBox txtName=(TextBox)PreviousPage.FindControl("TextBox1");
Response.Write(string.Format("欢迎{0}使用执行跨页面发送数据的弱类型方法!",txtName.Text.ToString()));
}
}
宿页面
protected void Page_Load(object sender, EventArgs e)
{
if (PreviousPage != null)
{
Response.Write(string.Format("欢迎{0}使用执行跨页面发送数据的强类型方法!", PreviousPage.UserName));
}
}
Don't dream it,Be it! 
