In this article, I am going to create a folder and also store file in this
folder.
Strings are immutable. You can use String as an identifier. The contents of a
string object cannot be changed after the object is created.
Path class used to perform operation on String instance that contain full path
information of file or directory. GetFileName method returns the file name with
extension of specified path to Path class.
AppDomain used as a container for code and date in .NET runtime. It is
represented by AppDomain object. AppDomain is a virtual location in memory where
a process runs. AppDomain provide isolation, security and unloading boundaries
for executing managed code. AppDomains are created using the CreateDomain
method. AppDomain instances are used to load and execute assemblies. When an
AppDomain is no longer in use, it can be unloaded.
Directory class expose methods to create, delete, EnumerateDirectories,
EnumerateFiles, Exists, move etc. operations to directories and subdirectories.
Exists method use to check that directory or folder exists or not.
CreateDirectory method used to create directory, we can call CreateDirectory
method directly from Directory class.
Code:
FilePage.aspx
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="FilePage.aspx.vb" Inherits="FilePage" %>
<!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></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:FileUpload ID="FileUpload1" runat="server" />
<asp:Button ID="Button1" runat="server"
Text="Add" onclick="Button1_Click" />
</div>
</form>
</body>
</html>
FilePage.aspx.vb
Imports
System.IO
Partial Class FilePage
Inherits System.Web.UI.Page
Protected
Sub Button1_Click(sender As Object, e As
System.EventArgs)
Handles Button1.Click
Dim strFilename
As [String]
= Path.GetFileName(FileUpload1.FileName)
Dim StrFilePathName
As [String]
= [String].Empty
Dim strBaseDir
As [String]
= AppDomain.CurrentDomain.BaseDirectory +
"Files"
If Not Directory.Exists(strBaseDir)
Then
Directory.CreateDirectory(strBaseDir)
End If
StrFilePathName = strBaseDir & "\"
& strFilename
FileUpload1.SaveAs(StrFilePathName)
If Not
FileUpload1.HasFile Then
Return
End If
Response.Redirect("~/Notification.aspx")
End Sub
End Class
Notification.aspx
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Notification.aspx.vb" Inherits="Notification" %>
<!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></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h1>Your
file loaded successfully in Files folder</h1>
<asp:Button ID="Button1" runat="server" Text="Button" />
</div>
</form>
</body>
</html>
Notification.aspx.vb
Partial Class Notification
Inherits System.Web.UI.Page
Protected Sub
Button1_Click(sender As Object, e As
System.EventArgs)
Handles Button1.Click
Response.Redirect("~/FilePage.aspx")
End Sub
End Class
Output :
First click on browse button. Select any file. Then click on Add button (see
figure 1)
Figure 1
You will move to another page, that page look like below figure 2.
Figure 2
Click on button to move back to FilePage.aspx
See Figure 3. Now your file is added properly in your application. First
refresh the application.
Figure 3