About Download code in mvc

Question

hello Everyone,

Hope everyone is fine.

I am working in mvc and sql database.I am using following code to download a file, but it is giving "An exception occurred during a WebClient request" error or Sometimes "Given path format not supported" error.

The file is stored on Azure Storage and so it has online file url.

string remoteUri = "https://[Storagename].blob.core.windows.net/[ContainerName]/";

string fileName = [FileName], myStringWebResource = null;

// Create a new WebClient instance.

WebClient myWebClient = new WebClient();

// Concatenate the domain with the Web resource filename.

myStringWebResource = remoteUri + [FileName];

Console.WriteLine("Downloading File \"{0}\" from \"{1}\" .......\n\n", [FileName], myStringWebResource);

// Download the Web resource and save it into the current filesystem folder.

myWebClient.DownloadFile(myStringWebResource, fileName);

', [FileName], myStringWebResource); // Download the Web resource and save it into the current filesystem folder. myWebClient.DownloadFile(myStringWebResource, fileName);

Guest User · Answer

Hey Laxmidhar Sahoo, Thank you for your reply I got your point of setting the destination path in computer's downloads folder and it worked for me. But what if i open that link in my mobile phone and want to download file in mobile, like how we download google image. I have also tried MemoryStream code , but could fix my download issue. using (MemoryStream ms = new MemoryStream()) { blockBlob.DownloadToStream(ms); return ms.ToArray(); } Also, i want to download that file from Azure Explorer through C#, i was able to upload files but not able to download Thank you

Laxmidhar Sahoo · Answer

Hi webclient second argument should be the full where the file will be downloaded using System.Net; WebClient webClient = new WebClient(); webClient.DownloadFile( "http://mysite.com/myfile.txt" , @ "c:\myfile.txt" ); Thanks and regards

Laxmidhar Sahoo · Answer

Hi I am not aware about your mobile os .So may use javascript anchor . function downloadBlob(blob, filename) { // Create an object URL for the blob object const url = URL.createObjectURL(blob); // Create a new anchor element const a = document.createElement( 'a' ); // Set the href and download attributes for the anchor element // You can optionally set other attributes like `title`, etc // Especially, if the anchor element will be attached to the DOM a.href = url; a.download = filename || 'download' ; // Click handler that releases the object URL after the element has been clicked // This is required for one-off downloads of the blob content const clickHandler = () => { setTimeout(() => { URL.revokeObjectURL(url); this .removeEventListener( 'click' , clickHandler); }, 150); }; // Add the click event listener on the anchor element // Comment out this line if you don't want a one-off download of the blob content a.addEventListener( 'click' , clickHandler, false ); // Programmatically trigger a click on the anchor element // Useful if you want the download to happen automatically // Without attaching the anchor element to the DOM // Comment out this line if you don't want an automatic download of the blob content a.click(); // Return the anchor element // Useful if you want a reference to the element // in order to attach it to the DOM or use it in some other way return a; } Thanks and regards

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