文件下载后树不能用了~~~~~~```

stringbuilder 2006-02-27 10:58:19

在框架的情况下，下载一个文件,弹出对话框后点保存，下载了后左边的树就没有反应了！

我用了Iframe处理，在弹出对话框后点取消，然后再点下载，会出现线程错误！高手来解！

...全文

83 7 打赏收藏转发到动态举报

写回复

用AI写文章

7 条回复

切换为时间正序

请发表友善的回复…

发表回复

stringbuilder 2006-02-28

打赏
举报

在download.aspx里面的代码：

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'在此处放置初始化页的用户代码
ApplyLicense(Me.Request.QueryString("valuedata"))
End Sub

Public Shared Function ApplyLicense(ByVal aClientName As String) As Boolean
Try
aClientName = aClientName.Trim

Dim ls_applyfile As String = HttpContext.Current.Server.MapPath(HttpContext.Current.Request.ApplicationPath) + "\" + aClientName + ".lic"

Dim fi As New FileInfo(ls_applyfile)

HttpContext.Current.Response.Clear()
HttpContext.Current.Response.ClearHeaders()
HttpContext.Current.Response.Buffer = False

HttpContext.Current.Response.AddHeader("Content-DisPosition", "attachment;filename=" + HttpUtility.UrlEncode(fi.Name).ToString())
HttpContext.Current.Response.AddHeader("Content-Length", fi.Length.ToString())
HttpContext.Current.Response.ContentType = "application/octet-stream"
HttpContext.Current.Response.WriteFile(fi.FullName)

HttpContext.Current.Response.Flush()

If File.GetAttributes(ls_applyfile).ReadOnly Then File.SetAttributes(ls_applyfile, FileAttributes.Normal)
File.Delete(ls_applyfile)
HttpContext.Current.Response.End()

Return True
Catch ex As Exception
HttpContext.Current.Response.Write("<script language='javascript'>alert('" + "下载错！" + ex.ToString.Replace("\r\n", "\\r\\n") + "');</script>")
Return False
End Try
End Function

你们运行下就知道了，点download,然后点保存，然后点取消，再点download,哈哈，出问题了！

stringbuilder 2006-02-28

打赏
举报

第二个页面download.aspx

<HTML>
<HEAD>
<title>downLoad</title>
<meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" content="Visual Basic .NET 7.1">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<FONT face="宋体"></FONT>
</form>
</body>
</HTML>

stringbuilder 2006-02-28

打赏
举报

很简单的，两个页面，第一个webform1.aspx

<HTML>
<HEAD>
<title>showFrame</title>
<meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" content="Visual Basic .NET 7.1">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
<script>
function toDownload()
{
iframe1.document.location="downLoad.aspx?valuedata='北京测试系统有限公司'";
}
</script>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<A onclick="toDownload()" href="#">toDownload</A>
<iframe id="iframe1" name="iframe1" src="blank.aspx" height="0">
</iframe>
</form>
</body>
</HTML>