asp.net 页面公共属性传值 提问,该如何解决
日期：2014-05-18 浏览次数：20385 次
asp.net 页面公共属性传值 提问
源页
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.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>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="txtY" runat="server"></asp:TextBox>
<asp:Button ID="btnT2" runat="server" OnClick="btnT2_Click" Text="提交（公共属性值）" />
</div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class _Default : System.Web.UI.Page
{
public string Cz
{
get
{
return txtY.Text;
}
}
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnT2_Click(object sender, EventArgs e)
{
Response.Redirect("Default2.aspx");
}
}
目标页
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<%@ PreviousPageType VirtualPath="~/Default.aspx" %>
<!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>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="labD" runat="server" Width="98px"></asp:Label></div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
labD.Text = PreviousPage.Cz; // 未将对象引用设置到对象的实例。
}
}
求助各位大侠，问什么实现不了啊！// 未将对象引用设置到对象的实例。在目标页 PreviousPage问什么是Null？
------解决方案--------------------
Response.Redirect("Default2.aspx");这种方法是不行的，你应该
<asp:Button ID="btnT2" runat="server" PostBackUrl="Default2.aspx" Text="提交（公共属性值）" />
才能使用PreviousPage
源页
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.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>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="txtY" runat="server"></asp:TextBox>
<asp:Button ID="btnT2" runat="server" OnClick="btnT2_Click" Text="提交（公共属性值）" />
</div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class _Default : System.Web.UI.Page
{
public string Cz
{
get
{
return txtY.Text;
}
}
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnT2_Click(object sender, EventArgs e)
{
Response.Redirect("Default2.aspx");
}
}
目标页
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<%@ PreviousPageType VirtualPath="~/Default.aspx" %>
<!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>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="labD" runat="server" Width="98px"></asp:Label></div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
labD.Text = PreviousPage.Cz; // 未将对象引用设置到对象的实例。
}
}
求助各位大侠，问什么实现不了啊！// 未将对象引用设置到对象的实例。在目标页 PreviousPage问什么是Null？
------解决方案--------------------
Response.Redirect("Default2.aspx");这种方法是不行的，你应该
<asp:Button ID="btnT2" runat="server" PostBackUrl="Default2.aspx" Text="提交（公共属性值）" />
才能使用PreviousPage
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