Webclient get file download size

We can avoid DataBufferLimitException by increasing its capacity. To do that we need to configure the default codecs on the WebClient during building. Here, we are building a WebClient with specifying DataBuffer size. Using that we will be able to download files up to 2MB in one go. Remember that, increasing DataBuffer size will increase its impact on your overall memory.

We should only do so when we have specific requirements. The best way to download large files using WebClient it to download the file in chunks. To do that we need to use Flux publisher that can emit zero to N events. Example of Using WebClient to download large file in chunks and write to the disk. This will download a large file in parts and write each part to a file on disk. The Flux delivers N number of DataBuffer instances — each filled with parts of the downloaded contents.

Alternatively, we can also write contents of the downloaded file straight to an OutputStream. Finally remember that to Download file in stream we do not need to alter the DataBuffer default capacity. However, we can configure DataBuffer size to achieve optimal and efficient performance and memory consumption. Also, we learned we can download a file in whole or in parts and understood that downloading a file as whole has big impact on the memory.

The DownloadFile method downloads to a local file data from the URI specified by in the address parameter. This method blocks while downloading the resource.

To download a resource and continue executing while waiting for the server's response, use one of the DownloadFileAsync methods. If the QueryString property is not an empty string, it is appended to address.

This member outputs trace information when you enable network tracing in your application. For more information, see Network Tracing in. NET Framework. When using this method in a middle tier application, such as an ASP. NET page, you will receive an error if the account under which the application executes does not have permission to access the file.

Skip to main content. This browser is no longer supported. However, if the web-service wants to "stream" data to you using Chunk encoding , then you won't know until the whole file is downloaded. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 9 years, 3 months ago. Active 2 years, 3 months ago. Viewed 23k times. I am downloading image files from web using the following code in my Console Application.

Improve this question. Add a comment. Active Oldest Votes. WebClient ; client. ToInt64 client. Improve this answer. MethodMan MethodMan This works like a charm for me, but after the third use it stops everything and crashes. I even tried calling client. Dispose but it's not helping Do you have any idea why that might be happening?