我实现了将文件上传到本地路径，然后将路径保存在gridview中，能不能通过gridview控件实现下载？下面的是我实现上传的代码。
If (FileUpload1.HasFile) Then
SaveFile(FileUpload1.PostedFile)
Dim filepath As String = "d:\uploads\"
Dim inforname As String = System.IO.Path.GetFileName(FileUpload1.FileName)
Dim inforsize As Integer = FileUpload1.FileBytes.Length
Dim infortime As String = DateTime.Now.ToString("yyyy-MM-dd ")
Dim tid As String = Label1.Text
Dim cname As String = Label1.Text
Dim cmd As SqlCommand
myconn = New SqlConnection("server=localhost;database=database;uid=sa;pwd=sa")
myconn.Open()
Dim sqlstr As String = "insert into [information] ([inforname],[inforsize],[infortime],[tid],[cname],[filepath]) VALUES (@inforname,@inforsize,@infortime,@tid,@cname,@filepath)"
cmd = New SqlCommand(sqlstr, myconn)
cmd.Parameters.AddWithValue("@inforname", inforname)
cmd.Parameters.AddWithValue("@inforsize", inforsize)
cmd.Parameters.AddWithValue("@infortime", infortime)
cmd.Parameters.AddWithValue("@tid", tid)
cmd.Parameters.AddWithValue("@cname", cname)
cmd.Parameters.AddWithValue("@filepath", filepath)
cmd.ExecuteNonQuery()
cmd = New SqlCommand("SELECT * FROM [information] ", myconn)
Dim dr As System.Data.SqlClient.SqlDataReader = cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection)
GridView1.DataBind()
myconn.Close()
Else
' Notify the user that a file was not uploaded.
' Before attempting to save the file, verify
' that the FileUpload control contains a file.
Response.Write("<script>alert('上传文件不能为空，请重新选择上传文件！')</script>")
End If
Sub SaveFile(ByVal file As HttpPostedFile)
Dim savePath As String = "d:\uploads\"
Dim fileName As String = FileUpload1.FileName
HyperLink5.Text = fileName
Dim pathToCheck As String = savePath + fileName
Dim inforsize As Integer = FileUpload1.FileBytes.Length
If (FileUpload1.FileBytes.Length >= 10240) Then
Response.Write("<script>alert('上传文件过大，请重新选择上传文件！')</script>")
If (System.IO.File.Exists(pathToCheck)) Then
Response.Write("<script>alert('文件已存在！')</script>")
End If
Else : Response.Write("<script>alert('上传成功！')</script>")
End If
savePath += fileName
FileUpload1.SaveAs(savePath)
End Sub
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可以，直接a标签指定把本地资源的url就可以啊
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不需要用按钮，用链接就可以。
ru:
这种样式的
<a href="myfile.rar">下载</a>
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参考：
http://www.cnblogs.com/insus/articles/1411761
http://www.cnblogs.com/insus/articles/2003336