asp.net上传与删除文件代码,我们用vb 版的形式来做了,
本教程将展示我们可以如何上传文件到网络服务器,并使用GridView控制删除文件以及。
VB的版本。 常常,我们要允许上传档案到Web服务器,使新的内容载入更快和更容易使用FTP以上。
ASP.NET使这一方便我们这样做,但会发生什么变化,我们要删除的文件从网络服务器吗?
那么ASP.NET中,当然,有一个答案为这件事的。我们可以使用GridView来显示文件在某一目录,并允许用户删除这些文件。
首先,我们需要下面的组装参考: 进口System.IO 我们感动我们的网站服务器的智慧和发现他们是难以置信的专业。
其安装非常容易,我们启动和运行中没有时间。
我们需要添加一个FileUpload控件和一个GridView : 我只是签署了在服务器,不能更高兴,我的Windows Server !
这里瞧瞧吧,看看吧。
代码隐藏看起来就像这样:
Imports System.IO
Partial Class _Default Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Handles Me.Load End Sub
Protected Overrides Sub OnLoad(ByVal e As System.EventArgs)
MyBase.OnLoad(e)
If (Not IsPostBack)
Then GridView1.DataBind()
End
If
End
Sub Protected Function GetUploadList() As String()
Dim folder As String = Server.mapPath("/media/ul")
Dim files() As String = Directory.GetFiles(folder)
Dim fileNames(files.Length - 1) As String Array.Sort(files)
For i As Integer = 0 To files.Length - 1
fileNames(i) = Path.GetFileName(files(i))
Next i
Return fileNames
End Function
Protected Sub UploadThisFile(ByVal upload As FileUpload)
If upload.HasFile Then
Dim theFileName As String = Path.Combine(Server.mapPath("/media/ul"), upload.FileName)
upload.SaveAs(theFileName)
labelStatus.Text = "File has been uploaded."
End
If
End
Sub Protected Sub GridView1_RowDeleting(ByVal sender As Object, ByVal e As
System.Web.UI.WebControls.GridViewDeleteEventArgs)
Handles GridView1.RowDeleting e.Cancel = True
Dim fileName As String = (CType(GridView1.Rows(e.RowIndex).FindControl("FileLink"), HyperLink)).Text fileName = Path.Combine(Server.MapPath("/media/ul"), fileName) File.Delete(fileName)
GridView1.DataBind()
End Sub
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Handles Button1.Click UploadThisFile(FileUpload1) GridView1.DataBind()
End Sub
End Class