Could not find file error on uploading files in asp.net application webforms
Question
I want to upload files like images using asp.net application webforms .
The application .netfaramwork is 4.6.1 .
I don't have any problem with website projects but webforms throw unusual errors.
This is my aspx page code:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="uploadfile.aspx.cs" Inherits="fileUploadTest.uploadfile" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>upload image</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<p>Browse to Upload File</p>
<asp:FileUpload ID="FileUpload1" runat="server" />
</div>
<p>
<asp:Button ID="Button1" runat="server" Text="Upload File" OnClick="Button1_Click" />
</p>
</form>
<p>
<asp:Label runat="server" ID="FileUploadStatus"></asp:Label>
</p>
</body>
</html>
and in code behind aspx.cs is:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace fileUploadTest
{
public partial class uploadfile : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
if ((FileUpload1.PostedFile != null) && (FileUpload1.PostedFile.ContentLength > 0))
{
string fn = System.IO.Path.GetFileName(FileUpload1.PostedFile.FileName);
string SaveLocation = Server.MapPath("upload") + "\\" + fn;
try
{
FileUpload1.PostedFile.SaveAs(SaveLocation);
FileUploadStatus.Text = "The file has been uploaded.";
}
catch (Exception ex)
{
FileUploadStatus.Text = "Error: " + ex.Message;
}
}
else
{
FileUploadStatus.Text = "Please select a file to upload.";
}
}
}
}
I already create a folder in application root named it upload .
But when I click on the button after choosing the file from my system, it throws an error as following:
Error: Could not find file 'C:\\Users\\mybla\\Documents\\Visual Studio 2017\\Projects\\05. Learning\\fileUploadTest\\fileUploadTest\\upload\\logo.png'.
logo.png is the file I choose from my system. I even Try this code:
if (Directory.Exists(Server.MapPath("~/upload/"))){
FileUpload1.SaveAs(Server.MapPath("~/upload/" + fileName));
}
Directory.Exists() returns true but FileUpload1.SaveAs() return same error I mentioned.
Note: Update#1
I even try following code, but the error is same:
var path = Server.MapPath("~/upload/" + FileUpload1.PostedFile.FileName);
FileUpload1.PostedFile.SaveAs(path);
3 answers
solution1
1 2019-12-29 18:46:14
Most of all problem occurs because of non-existed directory.
Place this code before calling .SaveAs and give it a one more try:
if (!Directory.Exists(Server.MapPath("upload")))
{
Directory.CreateDirectory(Server.MapPath("upload"));
}
Update
Here is complete Button1_Click event:
protected void Button1_Click(object sender, EventArgs e)
{
if ((FileUpload1.PostedFile != null) && (FileUpload1.PostedFile.ContentLength > 0))
{
string fn = System.IO.Path.GetFileName(FileUpload1.PostedFile.FileName);
string SaveLocation = Server.MapPath("upload") + "\\" + fn;
try
{
if (!Directory.Exists(Server.MapPath("upload")))
{
Directory.CreateDirectory(Server.MapPath("upload"));
}
FileUpload1.PostedFile.SaveAs(SaveLocation);
FileUploadStatus.Text = "The file has been uploaded.";
}
catch (Exception ex)
{
FileUploadStatus.Text = "Error: " + ex.Message;
}
}
else
{
FileUploadStatus.Text = "Please select a file to upload.";
}
}
solution2
1 ACCPTED
Your code is correct and I suppose your windows defender on windows 10 block the IIS access due to it's new feature controlled folder access .
To resolve your problem:
1. open the windows defender.
2. click on manage ransomware protection on virus and threat protection tab.
3. then switch off controlled folder access .
Tell me if you have still problem.
solution3
0 2019-12-30 10:58:08
Save the file with extension like below.
protected void Button1_Click(object sender, EventArgs e)
{
if ((FileUpload1.PostedFile != null) && (FileUpload1.PostedFile.ContentLength > 0))
{
string fn = System.IO.Path.GetFileName(FileUpload1.PostedFile.FileName);
string ext = System.IO.Path.GetExtension(FileUpload1.PostedFile.FileName);
string SaveLocation = Server.MapPath("~/upload/");
try
{
FileUpload1.PostedFile.SaveAs(SaveLocation+fn +ext);
FileUploadStatus.Text = "The file has been uploaded.";
}
catch (Exception ex)
{
FileUploadStatus.Text = "Error: " + ex.Message;
}
}
else
{
FileUploadStatus.Text = "Please select a file to upload.";
}
}
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