Today's post will touch on something most analysts and VBA developers might find useful: downloading files using vba from the Web (VBA Download). Excel VBA again proves to be a versatile tool for Analytics – in this case for extracting and storing data. Downloading files can be a useful way to save data extracted from the web and to build your own data repository, or simply to make a backup of any data downloaded from the Web.
Use Excel 2013 VBA and Macros to automate virtually any routine task, and save yourself hours, days, maybe even weeks. Then, learn how to make Excel do things you thought were simply impossible! You'll discover macro techniques you won't find anywhere else and learn how to create automated reports that are amazingly powerful and useful. Use Excel 2013 VBA and Macros to automate virtually any routine task, and save yourself hours, days, maybe even weeks. Then, learn how to make Excel do things you thought were simply impossible! You'll discover macro techniques you won't find anywhere else and learn how to create automated reports that are amazingly powerful and useful.
Excel can be a great tool to harness the data of the Internet. If you are more into the subject of Web Scraping I encourage you to take a look at the Excel Scrape HTML Add-In which let's you easily download HTML content from most Web Pages without resorting to VBA. In case browser simulation is needed read on my Simple class for using IE automation in VBA.
VBA download file macro
In some cases you will need to download large files (not text/HTML) and will want to be able to control the process of downloading the data e.g. might want to interrupt the process, enable the user to interact with Excel (DoEvent) etc. In these cases the above procedure won't do. The procedure below may however prove more efficient as it will download the file in 128 byte chunks of data instead of a single stream.
See effect below when executing macro:
How it works
The procedure will download the binary file in 128 byte chunks while saving the contents to the data stream and flushing it into the file once completed. In between the chunks you can call 'DoEvents' to enable user interaction, inform the user of the download progress Application.StatusBar or do other thing including interrupting the process and closing the connection. In case you want to do a proper Progress Bar and inform the user of the % progress you may want to leverage this solution.
Example
Let us use the procedure above to download a simple text file from AnalystCave.com:
Download the example
Provide your email to get the link to a file with an example usage of this script:
Reading / writing files in VBA
Example
Let us use the procedure above to download a simple text file from AnalystCave.com:
Download the example
Provide your email to get the link to a file with an example usage of this script:
Reading / writing files in VBA
So you know how to download files using VBA. 3d action movies download. The next step is learning how to read files using VBA.
Enable Macros Excel 2010
