I have the following arrangement:
foreach (string Id in Arguments.SelectedValues)
{
string temp = @"http://localhost:17277/blob.ashx?Pdf=o|" + Id;
Result.NavigateUrl = @"http://localhost:17277/blob.ashx?Pdf=o|" + Id;
}
in which I access the BLOB where the file is located and download it.
When I execute it, the fix does bring all the IDs, but I only download the file from the last ID in the array.
What do I owe and how can I make it download all the selected ones?
Of course this happens because in each iteration of the for you are stepping on the previous data leaving only the last one assigned to navigate
If in a url you can define a list of Ids then you should join them and navigate to the end
string Ids = string.Join("|", Arguments.SelectedValues);
string temp = @"http://localhost:17277/blob.ashx?Pdf=o|" + Ids;
Result.NavigateUrl = temp;
If you can separate each id with some character as I imagine is the | you could send several ids in the url to download the images, or imagine generate the pdf with the images of those Ids
To download multiple files, you could do it in several ways, the first one will be to modify the handler so that it receives the ids to download, generate a zip and return it to download, another is that the current action returns a java script that contains all the urls to the handler, in a tags with the target="_blank" attribute, which for js you simulate the click so that the file download starts.
Example of js
<script>
jQuery(function(){
@foreach(var urlArchivo in ViewBag.Archivos)
{
<text>
$('body').append($('<a target="_black" href="@urlArchivo" class="archivo-descargar" style="display:none"></a>'));
<text>
}
$(".archivo-descargar").click();
$(".archivo-descargar").remove();
});
</script>
In the case of zip, there are libraries like DotNetZip that make it easier to do a zip