The code then gets a list of files from the Images folder. This is done using Directory. GetFiles method. Note that the Select method picks only the file names skipping the folder information. We do this because we don't need complete physical path of these files. Notice the code marked in bold letters. The code iterates through all the image files from the ImageFiles page model property.
The download attribute sets a different name to be displayed in the file download dialog. The download name adds a date stamp to the original file name. Now run the Index page in the browser and try clicking on any of the links. You will be prompted with a file download dialog. The download attribute can also be used in situations where some kind of content such as images, CSV, or XML is being generated in the browser dynamically.
Suppose you are using HTML5 canvas to draw some graphics in the browser. You want to allow the end user to download the canvas content as an image file. How would you do that? The download attribute along with data URLs can be used to accomplish this task.
Let's see how. The download hyperlink placed below the canvas allows you to download the canvas graphics. The Download JavaScript function is responsible for doing this job for us. It is shown below :. The Download function first draws a rectangle on the canvas and then clears a region from the rectangle. We won't go into any details of canvas element here.
Then we grab the reference to the download anchor element and set its href and download properties. The href property is set to a data URLntaining the base64 encoded e data. This is done using the toDataURL method of the canvas. The download property is set to MyCanvas. Another use of the download attribute could be when you want the user to download dynamically generated CSV or XML data. Suppose you have a table displayed on a web page like this :.
You can accomplish this task with a dash of jQuery code as shown below :. The above code wires the click event handler of the Download Table link. Upon clicking the link the code converts the table data into CSV. This is done using a jQuery plugin - table2CSV. We grab the data in a variable.
Moreover, we also set the download property of the hyperlink to EmployeeTable. This way the download dialog will have the default file name of EmployeeTable. Online Courses ASP. Let's take a look at an example:. This feature is not supported by all browsers cough cough IE.
So if there is a specific browser you're targeting, make sure you check compatibility before using this attribute. Can I Use: Download attribute. Question: What would be use case for this? Isn't it logical to name your file how you want it to be downloaded?
My response: Yes, that would be ideal. But sometimes you might have a custom file naming convention you need to follow which might not makes sense for the user. Neat tip! If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail:. Example Specify a value for the download attribute, which will be the new filename of the downloaded file "w3logo. Report Error. Your message has been sent to W3Schools. W3Schools is optimized for learning and training.
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