Response.Rederect在默認(rèn)情況下是在本頁(yè)跳轉(zhuǎn)，所以除了在js中用window.open或是給A標(biāo)簽添加target屬性之外，在后臺(tái)似乎不能來(lái)打開(kāi)新的頁(yè)面，其實(shí)不然，通過(guò)設(shè)置form的target屬性同樣可以讓Response.Rederect所指向的url在新的窗口打開(kāi)。下面用三種方法來(lái)實(shí)現(xiàn)。
1 .給form指定target屬性，那么本頁(yè)面中所有的Response.Rederect都將在新的窗口中打開(kāi)。代碼如下：
復(fù)制代碼 代碼如下:
protected void Page_Load(object sender, EventArgs e)
{
form1.Target = "_blank";
}
或
form id="form2" runat="server" target="_blank">
2 .用腳本針對(duì)某個(gè)控件來(lái)指定form的target，代碼如下：
html代碼：
復(fù)制代碼 代碼如下:
%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="ResponseRedirectDemo._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 id="Head1" runat="server">
title>ResponseRedirectDemo/title>
/head>
body>
form id="form2" runat="server" target="_blank">
div>
asp:Button ID="Button1" runat="server" OnClick="Button1_Click"
Text="OpenNewWindow"/>
asp:Button ID="Button2" runat="server" OnClick="Button2_Click"
Text="OpenOldWindow" />
/div>
/form>
/body>
/html>
C#代碼：
[code]
namespace ResponseRedirectDemo
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Button1.Attributes.Add("onclick", "this.form.target='_blank'");
Button2.Attributes.Add("onclick", "this.form.target=''");
}
protected void Button1_Click(object sender, EventArgs e)
{
Response.Redirect("http://oec2003.cnblogs.com");
}
protected void Button2_Click(object sender, EventArgs e)
{
Response.Redirect("http://oec2003.cnblogs.com");
}
}
}
上面的代碼中點(diǎn)擊button1在新窗口打開(kāi)，點(diǎn)擊button2在本頁(yè)打開(kāi)。
3 .除了設(shè)置form的target屬性，要在新的窗口打開(kāi)頁(yè)面就只能用open，可以寫(xiě)個(gè)通用的方法來(lái)實(shí)現(xiàn)，如下：
復(fù)制代碼 代碼如下:
public class RedirectHelper
{
public static void Redirect(string url,
string target, string windowFeatures)
{
HttpContext context = HttpContext.Current;
if ((String.IsNullOrEmpty(target) ||
target.Equals("_self", StringComparison.OrdinalIgnoreCase))
String.IsNullOrEmpty(windowFeatures))
{
context.Response.Redirect(url);
}
else
{
Page page = (Page)context.Handler;
if (page == null)
{
throw new
InvalidOperationException("Cannot redirect to new window.");
}
url = page.ResolveClientUrl(url);
string script;
if (!String.IsNullOrEmpty(windowFeatures))
{
script = @"window.open(""{0}"", ""{1}"", ""{2}"");";
}
else
{
script = @"window.open(""{0}"", ""{1}"");";
}
script = String.Format(script, url, target, windowFeatures);
page.ClientScript.RegisterStartupScript(page.GetType(),
"Redirect", script, true);
} } }
這樣就可以在程序中使用RedirectHelper.Redirect("oec2003.aspx", "_blank", "");第三個(gè)參數(shù)為open窗口的一些屬性。但這樣好像還不是很方便，在.net3.5中提供了擴(kuò)展方法的特性，在這里也可以借用一下，將上面的靜態(tài)方法實(shí)現(xiàn)為Response.Redirect的一個(gè)重載。具體代碼如下：
復(fù)制代碼 代碼如下:
public static class RedirectHelper
{
public static void Redirect(this HttpResponse response,
string url, string target, string windowFeatures)
{
if ((String.IsNullOrEmpty(target) ||
target.Equals("_self", StringComparison.OrdinalIgnoreCase))
String.IsNullOrEmpty(windowFeatures))
{
response.Redirect(url);
}
else
{
Page page = (Page)HttpContext.Current.Handler; if (page == null)
{
throw new
InvalidOperationException("Cannot redirect to new window .");
}
url = page.ResolveClientUrl(url);
string script;
if (!String.IsNullOrEmpty(windowFeatures))
{
script = @"window.open(""{0}"", ""{1}"", ""{2}"");";
}
else
{
script = @"window.open(""{0}"", ""{1}"");";
}
script = String.Format(script, url, target, windowFeatures);
ScriptManager.RegisterStartupScript(page,
typeof(Page), "Redirect", script, true);
}
}
}
將該類(lèi)添加到項(xiàng)目中后，在程序中輸入Response.Redirect會(huì)發(fā)現(xiàn)該方法有三個(gè)重載了，這樣再結(jié)合前面的form的target 就非常方便了。
另外：
Respose.Write("script language='javascript'>window.open('"+ url +"');/script>"); （打開(kāi)簡(jiǎn)潔窗口）：
Respose.Write("script language='javascript'>window.open('" + url + "','','resizable=1,scrollbars=0,status=1,menubar=no,toolbar=no,location=no, menu=no');/script>");
1. Response.Redirect("XXX.aspx",true)——直接轉(zhuǎn)向新的頁(yè)面，原窗口被代替;
2. Response.Write("script>window.open('XXX.aspx','_blank')/script>")——原窗口保留，另外新增一個(gè)新頁(yè)面;
3. Response.Write("script>window.location='XXX.aspx'/script>")——打開(kāi)新的頁(yè)面，原窗口被代替;
4. Server.Transfer("XXX.aspx")——打開(kāi)新的頁(yè)面;
5. Response.Write("script>window.showModelessDialog('XXX.aspx')/script>")——原窗口保留，以對(duì)話(huà)框形式打開(kāi)新窗口;
6. Response.Write("script>window.showModelDialog('XXX.aspx')/script>")——對(duì)話(huà)框形式打開(kāi)新窗口，原窗口被代替;
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