How to call out path of local pictures library in ASP.NET web applications

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So i have a ASP.NET web app in c#. I've create a method to download files and it works fine. Currently, it's donwloading files in D drive as i pointed out that path. However, i want the files to be downloaded in Local Pictures Library.
Below are my codes:

What I have tried:

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "Download")
{
Response.Clear();
Response.ContentType = "application/octect-stream";
Response.AppendHeader("content-disposition", "filename=" + e.CommandArgument);
Response.TransmitFile(Server.MapPath("~/Images/") + e.CommandArgument);
WebClient webClient = new WebClient();
webClient.DownloadFile(Server.MapPath("~/Images/") + e.CommandArgument, @"d:\myfile.jpg");
Response.End();

}
}

Posted 10-Feb-19 22:21pm

Member 14144306

Updated 12-Feb-19 4:08am

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Richard MacCutchan 11-Feb-19 6:41am

Change the destination name to the location you need.

2 solutions

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Wastedtalent · Answer 1 · 2019-02-11T21:40:00

Solution 1

You could look into Environment.SpecialFolders:

Environment.SpecialFolder Enum (System) | Microsoft Docs[^]

There's quite a detailed write up here: Getting All "Special Folders" in .NET[^]

Posted 11-Feb-19 21:40pm

Wastedtalent

Richard Deeming · Answer 2 · 2019-02-12T04:08:00

Quote:

WebClient webClient = new WebClient();
webClient.DownloadFile(Server.MapPath("~/Images/") + e.CommandArgument, @"d:\myfile.jpg");

That code is running on the server. It is copying the image to the root of drive D: on the server.

It might appear to work when you debug the code in Visual Studio. But that's only because, in that specific case, the client and the server are the same computer.

As soon as you deploy your code to a real server, you'll see that the file is being saved on the server, not on the client.

The rest of your code is the only way to send a file to the client:

Response.Clear();
Response.ContentType = "application/octect-stream";
Response.AppendHeader("content-disposition", "filename=" + e.CommandArgument);
Response.TransmitFile(Server.MapPath("~/Images/") + e.CommandArgument);
Response.End();

NB: The user will be prompted to select where they want to save the file. There is no way to control where, or even if, the user saves the file.