How to download file using url to local pc in VB.NET

Question

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If e.CommandName = "Down" Then

    Dim row As GridViewRow = DirectCast(DirectCast(e.CommandSource, LinkButton).NamingContainer, GridViewRow)
    Dim lblDoc = TryCast(row.FindControl("lbllog"), Label).Text
    Dim cs = "http://172.16.16.21/"
    Dim save = lblDoc.Substring(37)
    Dim savepath = "D:/Documents/"
    If (Not System.IO.Directory.Exists(savepath)) Then
        System.IO.Directory.CreateDirectory(savepath)
    End If

    Dim savetolocalsave = savepath + save
    Dim lblDoca = cs + lblDoc.Substring(16)





    'Dim webClient As New System.Net.WebClient()
    'webClient.DownloadFile(lblDoca, savetolocalsave)

What I have tried:

it saves image by url..but it saves the image from which server it comes..
not save on my local pc..i want to save image on my local pc..

Posted 12-Apr-17 0:56am

Member 12300036

Updated 12-Apr-17 1:29am

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Comments

Jochen Arndt 12-Apr-17 7:03am

You have to execute the code on your local PC.

Member 12300036 12-Apr-17 7:05am

actually i create a webpage from where anyuser save that image on pc...how can i do that

Jochen Arndt 12-Apr-17 7:16am

With HTML 5 you can use a <a href> tag with the download attribute.

With Asp.NET you can provide a button that creates a response with a "Content-Disposition: attachment" header. Otherwise the image would be displayed by the browser.

In all cases there will be a message box shown by the browser to specify which action should be taken.

Alternatively provide the image URLs as links so that the user can use the context menu to download them.

Member 12300036 12-Apr-17 7:49am

how can i create responce and where i have to write that....
actually i did what u suggest but image is shown by click on that hyperlink

Jochen Arndt 12-Apr-17 7:56am

Just Google for "asp.net download image as file":
http://stackoverflow.com/questions/16739598/asp-net-downloadable-image-files

Or use (HTML5, requires recent browser versions):

<a href="server-local-path-to-image/image-name.ext" download="file-name">

Member 12300036 13-Apr-17 1:34am

If transaction.Text = "Document" Then
Dim cs = "http://sysnetglobal.in/"
Dim lblDoca = cs + doc.Substring(16)

' CREATE A LinkButton AND IT TO EACH ROW.
Dim lb = New HyperLink()
lb.ID = "lbldoc"
lb.Text = "Download"
lb.NavigateUrl = lblDoca

' AddHandler lb.Click, AddressOf lb_Click

Me.form1.Controls.Add(lb)

creating dynamic hyperlink bt only show image when i click on that

Member 12300036 12-Apr-17 7:15am

i knw its working when i execute this code on my pc using visual studio...but on server it saves the image on same server not on my pc

Jochen Arndt 12-Apr-17 7:20am

The destination path is a local directory. So it will be of course stored in that local path of the system that executes the code.

[no name] 12-Apr-17 7:10am

https://www.codeproject.com/Questions/1180150/How-to-download-file-that-is-on-another-server-in

Member 12300036 12-Apr-17 7:13am

not working on server

[no name] 12-Apr-17 8:15am

Doesn't give you a pass to be rude and repost this over and over.

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F-ES Sitecore · Answer 1 · 2017-04-12T01:29:00

Solution 1

You can't save files to the local machine from a web server. If web sites could save files on your local PC the security implications would be huge. It doesn't matter how many times you ask this question the answer is always going to be the same.

Posted 12-Apr-17 1:29am

F-ES Sitecore