Sign in to vote. I am new in ASP. NET development. I want to see a good example of how to download a file exp:. What is the code of the downloading or sending file to the client from the server in ASP. Can you help me about this? Saturday, March 21, AM. In its simplest version, the code would be just this: Response. End ; There are several variants and additional headers that you can use.
Now that you know that you have to look for "Response. WriteFile", it should be easy for you to find lots of examples across the 'net. You would place this code in the Click event handler for your "download" button. ReadAllLines method returns data as an array. The char data type is required because the Split method returns an array in which each element is of the type char. For information about arrays, see Introduction to ASP. You can use Microsoft Excel to save the data contained in a spreadsheet as a comma-delimited file.
When you do, the file is saved in plain text, not in Excel format. Each row in the spreadsheet is separated by a line break in the text file, and each data item is separated by a comma. You can use the code shown in the previous example to read an Excel comma-delimited file just by changing the name of the data file in your code. To delete files from your website, you can use the File.
Delete method. This procedure shows how to let users delete an image. Important In a production website, you typically restrict who's allowed to make changes to the data. For information about how to set up membership and about ways to authorize users to perform tasks on the site, see Adding Security and Membership to an ASP. This page contains a form where users can enter the name of an image file. They don't enter the. The code reads the file name that the user has entered and then constructs a complete path.
To create the path, the code uses the current website path as returned by the Server. MapPath method , the images folder name, the name that the user has provided, and ". To delete the file, the code calls the File. Delete method, passing it the full path that you just constructed.
At the end of the markup, code displays a confirmation message that the file was deleted. Enter the name of the file to delete and then click Submit.
If the file was deleted, the name of the file is displayed at the bottom of the page. The FileUpload helper lets users upload files to your website. The procedure below shows you how to let users upload a single file. Add the ASP. The body portion of the page uses the FileUpload helper to create the upload box and buttons that you're probably familiar with:. The properties that you set for the FileUpload helper specify that you want a single box for the file to upload and that you want the submit button to read Upload.
You'll add more boxes later in the article. When the user clicks Upload , the code at the top of the page gets the file and saves it. The Request object that you normally use to get values from form fields also has a Files array that contains the file or files that have been uploaded. You can get individual files out of specific positions in the array — for example, to get the first uploaded file, you get Request. Files[0] , to get the second file, you get Request. Files[1] , and so on.
Remember that in programming, counting usually starts at zero. When you fetch an uploaded file, you put it in a variable here, uploadedFile so that you can manipulate it. Make sure you provide a valid email address else you won't be notified when the author replies to your comment Please note that all comments are moderated and will be deleted if they are Not relavant to the article Spam Advertising campaigns or links to other sites Abusive content.
Please do not post code, scripts or snippets. Required Invalid Email Address. Security code:. Required Invalid security code. I declare, I accept the site's Privacy Policy.
Add Comment. Disclaimer : The code samples and API available at www. You are free to use it for commercial as well as non-commercial use at your own risk, but you cannot use it for posting on blogs or other tutorial websites similar to www.
All the code samples and API provided by the authors are solely their creation and neither the author nor the site are responsible if it does not work as intended.
I agree to the above terms. Dennis T --Reinstate Monica-- 5 5 silver badges 19 19 bronze badges. Rui Jarimba Rui Jarimba Thanks for your response, it's still not working with the above code. The file download dialog is not being invoked. I would consider writing the data as binary as well. Any idea? It's Write don't forget to use Response. End ; — Akshay Dattatray Nangare. Show 1 more comment.
At the very least, you should need Response. ToString ; to write your text data to the response. Joshua Joshua 7, 3 3 gold badges 32 32 silver badges 39 39 bronze badges.
Sorry, forgot to include that line in the code above. It's still not working. Vj87 See my update, you're buffering so it might not be sending the content to the browser when you expect. Also, if this is a large amount of text, the entire file won't get sent to the browser until the server has buffered everything.
You can also try setting Response.
0コメント