How to download file using anchor tag, file mentioned on path of any location

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Hi,

I am trying to download file which is available on my computer.

I have path available :-

E:/Documents/Marketing/2/ComboxCommnets.png

how can i download this file by clcking on link

C#

if (attachments != null && attachments.Count > 0)
                {
                    Literal ltrAttachment = (grdUserMarketingUpdates.FindDetailRowTemplateControl(e.VisibleIndex, "ltrAttachment") as Literal);
                    strAttchments = new StringBuilder();
                    foreach (var item in attachments)
                    {
                        strAttchments.Append("<a style=\"color: blue\" href =" + item.URL + " >" + item.Name + "</ a > <br />");
                    }
                    ltrAttachment.Text = strAttchments.ToString().Trim();
                }

Posted 26-Nov-15 19:06pm

Torakami

Updated 26-Nov-15 23:42pm

Manas_Kumar

v2

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Comments

[no name] 27-Nov-15 4:09am

What is the value you are getting in item.URL

Torakami 27-Nov-15 5:05am

E:/Documents/Marketing/1/ComboxCommnets.png

Torakami 27-Nov-15 5:05am

This is not my location where my project is present , I am saving outside the project

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Manas_Kumar · Answer 1 · 2015-11-26T23:39:00

In order to download an image click on a href link follow below steps:

Step1: Create a ASHX generic file to download an image.

C#

public class DownloadFile : IHttpHandler 
{ 
    public void ProcessRequest(HttpContext context)
    {
 
        string destPath = context.Server.MapPath(HttpContext.Current.QueryString["path"]);
        // Check to see if file exist
        FileInfo fi = new FileInfo(destPath);
 
        // If the file exist on the server then add it to the database
        if (fi.Exists)
        {
            HttpContext.Current.Response.ClearHeaders();
            HttpContext.Current.Response.ClearContent();
            HttpContext.Current.Response.AppendHeader("Content-Length", fi.Length.ToString());
            HttpContext.Current.Response.ContentType = "application/image";;
            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment; filename=temp.png");
            HttpContext.Current.Response.WriteFile(destPath);
            HttpContext.Current.Response.End();
        }
    }
 
    public bool IsReusable
    {
        get
        {
            return false;
        }
    } 
}

Step2: Now change in code behind where you are adding href link

C#

foreach (var item in attachments)
{
    strAttchments.Append("<a style=\"color: blue\" href ='DownloadFile.ashx?path=" + item.URL + "' >" + item.Name + "</ a > <br />");	
}

Link should look like:

HTML

<a style="color: blue" href="DownloadFile.ashx?path=E:/Documents/Marketing/1/ComboxCommnets.png">Download</a>