C# post data to download a file

To make this application work in the. To do this, follow these steps:. Locate the application folder in Windows Explorer. Right-click the ApplicationName folder, and then click Properties. The ApplicationName Properties dialog box appears. HtmlInputFile Class.

PostedFile Property. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. AddDefaultHeader AddHandler Get ExecuteTaskAsync ExecuteGetTaskAsync ExecuteAsync Execute BuildUri Post ClearHandlers AddDefaultParameter DownloadData ExecutePostTaskAsync ExecutTaskAsync 8. ExecuteAsPost 8. Put 6. GetAsync 5. ExecuteTask 4.

ExecuteAndValidate 3. ExecuteRequestAsync 3. Options 2. GetRoot 2. Delete 2. RemoveDefaultParameter 2. GetResponseAsync 2. ExecuteRequestWithChecks 2. GetProjectByName 2. GetTaskAsync 2. PostAsync 2.

GetModelAsync 2. You can create this class at any common place from where you can access it easily. If your request requires multiple headers you can use Dictionary for the header as we used for parameters. I have also created a class named FileParameter with some class members and constructor to use directly while passing a file as a parameter to my post method. Step 3 Write the below code section from where you want to call the multipart-post method. DownloadData fileName ; is used to download the file if your file is on the server otherwise you can convert that file directly to bytes if it exists locally.

You can pass the name and number of parameters according to your requirement. View All. Then line 13 instantiates a MultipartFormDataContent object, which is the request content sent to the server side app. The key can be different when multiple files are included in a form. The values can only be represented as strings, and the server side app will have to parse them into correct data types. Line 21 sends the HTTP post request when the request content is ready.

Lines 23 and 24 receive the HTTP response for later use. In order to download a file, we make an HTTP Get request, then read the response content into a memory stream which can be copied to a physical file. If you are interested, you might want to read my other articles: File Upload via Swagger , Upload Files with Angular and. Again, the full solution for this article is in my GitHub repository. I hope you have learned something new.

Thanks for reading.