But of course, this is not the solution we are aiming for. We cannot send the file from its original state. You can use my SwiftExcel library. Some coworkers are committing to work overtime for a 1% bonus. When trying, ObjectDisposedException: Cannot access a disposed object. I don't have enough reputation to post this as a comment, so posting as an answer. I've been stuck researching this and trying everything I can find for 6+ hours now. 2022 C# Corner. The server I am sending a POST request to requires extra parameters in the Content-Disposition field that are easily added in C# code, but I am struggling to replicate this functionality in Java. @W.Meints I understand the reasons for wanting to store data, but I don't understand why anyone would want to store uploaded data on server disk space. Why do missiles typically have cylindrical fuselage and not a fuselage that generates more lift? The How and when to use async and await. For example, when we send the file type as PDF, service will return PDF file if we send Doc, service will return Word document. Thanks man. Old thread - but thought i would throw my code in here. How can I best opt out of this? Why are only 2 out of the 3 boosters on Falcon Heavy reused? How do you convert a byte array to a hexadecimal string, and vice versa? Uses Path.GetTempFileName to return a full path for a file, including the file name. Stack Overflow for Teams is moving to its own domain! Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. I'll try experimenting with culture codes but not sure where to put that yet. Following code is used to implement the above 3 fields. httpResponseMessage.Content.Headers.ContentDisposition=, System.Net.Http.Headers.ContentDispositionHeaderValue(. The 3rd solution from @CodeCaster would then look like this: Thanks for contributing an answer to Stack Overflow! content.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data"); content.Add(new StreamContent(ms, Convert.ToInt32(ms.Length)), "image", fileInfo.Name); I wanted to add this answer because I spent a great deal of time looking for a fast, reliable method to do this and no complete examples of using OpenXMLWriter for this purpose existed anywhere that I could find. Adding MemoryStream object to the HttpResponseMessage Content. c# MultipartFormDataContent Add methods (how to properly add a file), C# Integration Testing Controller with FromForm binding to IFormFile property, POSTing file from .NET's HttpClient to CPPCMS returns a 400 Bad Request with no error logging on server, Unit test case for uploading file using nunit C#, HttpClient POST upload fails with no file transfered and maleformed generated ContentDisposition. Then when you dump your DataTable in their as the DataSource, you can call the "GetClipboardContent" method of the DataGridView class, and finally simply place it in a selected Range/Cell on the Excel sheet. web service get token and file sound . There is a bug in MultipartFormDataContent. You can rate examples to help us improve the quality of examples. i gave you a working example of how to post using MultipartFormDataContent. https://github.com/aspnet/HttpAbstractions/issues/736. Could you please provide reference to this issue? System.Net.Http.HttpClient C#HttpClient WebA By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Does a creature have to see to be affected by the Fear spell initially since it is an illusion? You will put your route and use form-data and post the value and image,document.in postman. C# HttpClient 4.5 multipart/form-data upload. Add the following code to WebAPIConfig.cs, Run any of the above URLs with your project IP. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. C# (CSharp) IFormFile - 30 examples found. '// Data table holding all data Dim dt As New DataTable("F161") '// Create connection Dim conn As New SqlConnection("Server=MYSERVER;Database=Test;Trusted_Connection=Yes;") Dim fAdapter As New SqlDataAdapter With { .SelectCommand = New SqlCommand($"SELECT * FROM Good day everyone, I'm trying to upload file using ajax from client side to server side (asp.net core) controller but I'm having a null value. This cmdlet was introduced in PowerShell 3.0. I have attached only required files with the actual folder structure (due to the size of the project). It gave the abovementionned error and I remembered having to pass on additional data via file attributes. I need to have it in UK format, any ideas please? Uploading multi part file with ASP.NET core throws IOException: Unexpected end of Stream, Unexpected end of Stream, the content may have already been read by another component. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. How to align figures when a long subcaption causes misalignment, Correct handling of negative chapter numbers. Does the 0m elevation height of a Digital Elevation Model (Copernicus DEM) correspond to mean sea level? Math papers where the only issue is that someone else could've done it but didn't. Doesn't work with my excel either. There has to be a better way than building my own request. After configuring all the things click on send and see out put like this -- see image. How do you create a custom AuthorizeAttribute in ASP.NET Core? Share The server uses Kestrel. Correct handling of negative chapter numbers, Employer made me redundant, then retracted the notice after realising that I'm about to start on a new project. The server I am sending a POST request to requires extra parameters in the Content-Disposition field that are easily added in C# code, but I am struggling to replicate this functionality in Java. https://github.com/aspnet/AspNetCore/blob/master/src/Http/WebUtilities/src/MultipartReader.cs#L48-L50, It seems the preamble for my request is beyond the size limit of 1024 * 16 (16384) set for DefaultHeadersLengthLimit, but I have no clue why that could be the case. With the EPPlus NuGet package, it's very easy. What I have tried: Excel will convert numbers back to number format on its own. ASP.NET Core supports uploading one or more files using buffered model binding for smaller files and unbuffered streaming for larger files. I hope the comments are sufficient to guide anyone through what it's doing. This extention method can be called as follows: Solution based on tuncalik (thanks for idea) article, but in case of big tables is working much more faster (and is a little less clear). Unfortunately this only works for files. How do I create an Excel (.XLS and .XLSX) file in C# without installing Microsoft Office? 1. Apparently someone fixed their issue which was very similar to mine (https://github.com/aspnet/Mvc/issues/5128#issuecomment-307675219) here: https://github.com/aspnet/Mvc/issues/5128#issuecomment-307962922 but I can't seem to figure out how to figure out if it even applies. Not knocking your solution - just pointing out that the sloth principle is not utilized here as this solution adds the step of creating dto's and then compiling.. In the previous article, we have created a form where we had to manually type the image URL. As explained in ASP.NET Core HTTPRequestMessage returns strange JSON message, ASP.NET Core does not support returning an HttpResponseMessage (what package did you install to get access to that type?).. ; Saves the files to the local file system using a file name generated by the app. C# (CSharp) System.Net.Http HttpContent - 30 examples found. Believe me, this is a wonderful library and easy for her to use. Now, I found this question and read @Sylex's answer, so I use https://localhost:5001 to request the api, it works!!! Does a creature have to see to be affected by the Fear spell initially since it is an illusion? When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. How can I export a DataTable to Excel in C#? Making statements based on opinion; back them up with references or personal experience. To learn more, see our tips on writing great answers. C# (CSharp) System.Net.Http HttpContent - 30 examples found. In asp.net core 3, You have to add factories.RemoveType(); to your DisableFormValueModelBindingAttribute attribute. content.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data"); content.Add(new StreamContent(ms, Convert.ToInt32(ms.Length)), "image", fileInfo.Name); What value for LANG should I use for "sort -u correctly handle Chinese characters? httpResponseMessage.Content.Headers.ContentDisposition.FileName=PdfFileName; httpResponseMessage.Content.Headers.ContentType=, System.Net.Http.Headers.MediaTypeHeaderValue(, "C:\MyWorkSpace\SelfDev\UserAPI\UserAPI\Books\sample.pdf", "C:\MyWorkSpace\SelfDev\UserAPI\UserAPI\Books\sample.xls", "C:\MyWorkSpace\SelfDev\UserAPI\UserAPI\Books\sample.doc", "C:\MyWorkSpace\SelfDev\UserAPI\UserAPI\Books\sample.zip", IHttpActionResultGetbookFor(stringformat). How can I best opt out of this? The fix for me was to add this at receiver side: .Replace("\"", ""). You can see downloading of files when you run the URLs. Why couldn't I reapply a LPF to remove more noise? Unexpected end of Stream, the content may have already been read by another component. Stack Overflow for Teams is moving to its own domain! How many characters/pages could WordStar hold on a typical CP/M machine? the API) only has read permissions to the file, you will need to specify that as the third parameter when creating your FileStream, otherwise the default behavior is to open the file for read/write and you will get an exception since you do not have write permissions. What is a good way to make an abstract board game truly alien? Update: This link to the bug no longer works since the have retired Microsoft Connect. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. As explained in ASP.NET Core HTTPRequestMessage returns strange JSON message, ASP.NET Core does not support returning an HttpResponseMessage (what package did you install to get access to that type?).. warning? These are the top rated real world C# (CSharp) examples of System.Net.Http.HttpContent extracted from open source projects. No symbols have been loaded for this document." (I have taken this sample to cover all types of files). Hi @ahmedsalah-1628,. I'm trying to save a file on disk using this piece of code. I am attempting to upload a multipart/form-data with a file and a JSON blob using Postman to an ASP.NET Core 2.2 APIController and stream the file to a temporary file on the disk instead of fully into memory due to the files likely being potentially large in size (20MB - 2GB). Web applications that want to force a resource to be downloaded rather than directly rendered in a Web browser issue a Content-Disposition header in the HTTP response of the form:. If not, please let me know what you need and I'd be happy to provide it or test out any suggestions. How do I encode and decode a base64 string? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Earliest sci-fi film or program where an actor plays themself. IHostingEnvironment _hostingEnvironment; public ProfileController(IHostingEnvironment hostingEnvironment) { _hostingEnvironment = I changed my url from http://localhost:5000/ to https://localhost:5001/ and everything started working immediately. One way of doing it would be also with ACE OLEDB Provider (see also connection strings for Excel). That is about as close as you can get I believe.. Add any sample pdf, word, excel, zip (name them as sample) files into it. mm-dd-yyyy. Can an autistic person with difficulty making eye contact survive in the workplace? What exactly makes a black hole STAY a black hole? Interestingly, this caused an issue in cURL as well with a log looking like this: Changing the endpoint fixed that as well. I face issue I can't return true or false from web API compare excel as below. In my specific case, I was using a multipart boundary value which didn't exist in the payload being parsed by the MultipartReader: Once the multipartBoundary was updated to reflect an actual boundary value present in the content being parsed, the code worked as expected. Knowing that a redirection occurred, so I remove the '// Data table holding all data Dim dt As New DataTable("F161") '// Create connection Dim conn As New SqlConnection("Server=MYSERVER;Database=Test;Trusted_Connection=Yes;") Dim fAdapter As New SqlDataAdapter With { .SelectCommand = New SqlCommand($"SELECT * FROM Each row's data is in the first cell. HttpResponseMessagehttpResponseMessage=Request.CreateResponse(HttpStatusCode.OK); httpResponseMessage.Content.Headers.ContentDisposition.FileName=bookName; eBookResult(MemoryStreamdata,HttpRequestMessagerequest,stringfilename), System.Threading.Tasks.TaskExecuteAsync(System.Threading.CancellationTokencancellationToken). ClosedXML.Report generates an Excel file based on a template that you can create in Excel using any formatting. Angular 4+ upload file with some other data to .NET Core Web API. Did Dick Cheney run a death squad that killed Benazir Bhutto? There's plenty of those. What value for LANG should I use for "sort -u correctly handle Chinese characters? Ensured the Postman configured Headers does not have. The reason I'm asking is to upload photos to Flickr using this api: Thanks! Asking for help, clarification, or responding to other answers. Hi @ahmedsalah-1628,. See the Notes @alex.pulver it also doesn't work when I tried to use it on a server either. How are different terrains, defined by their angle, called in climbing? @Si8 once saved you could do a Process.Start(Your File) and it will open it for them. What is the easiest way to submit an HTTP POST request with a multipart/form-data content type from C#? Some smart answers on here (Tomasz Winiewski, cuongle). Irene is an engineered-person, so why does she have a heart problem? I am at learning phase and i want to post file and data to api using httpclient. Find centralized, trusted content and collaborate around the technologies you use most. It is simplified, in that it writes all values to the file as strings, but you can implement logic to write various datatypes (and use various cell formats) based on the content of your data. Another note: Microsoft does not recommended using Interop on a server. Example code: The modest way to export excel is using Microsoft CloseXml pakage. Some coworkers are committing to work overtime for a 1% bonus. In the previous article, we have created a form where we had to manually type the image URL. And at some point I started to get this error, but the code was not changed. How can I get the application's path in a .NET console application? What is a NullReferenceException, and how do I fix it? Result. Then another method which get the Dataset. Return PDF to the Browser using ASP.NET Core, ASP.NET Core HTTPRequestMessage returns strange JSON message, Making location easier for developers with new data primitives, Stop requiring only one assertion per unit test: Multiple assertions are fine, Mobile app infrastructure being decommissioned, 2022 Moderator Election Q&A Question Collection. This answer helped me resolve an issue where I try to use bindings with UploadFilesAsync(String cst, String data, String device), before the multipart would throw exceptions due to being preempted by the bindings. I wasted a whole hour thinking my app was broken. I'm using asp.net core 3.1 and I meet this situation too. System.Net.Http.HttpClient C#HttpClient WebA MultipartRequestHelper (Utilities/MultipartRequestHelper.cs): StreamingController.UploadPhysical , FileHelpers.ProcessStreamedFile , FileHelpers IFormFile IFormFile ProcessFormFile Utilities/FileHelpers.cs ProcessStreamedFile , / API , FileHelpers , , JPEG , Path.GetRandomFileName Path.GetTempFileName , , 2 MB appsettings.json , JavaScript FormData Razor FormData , name battlePlans, JavaScript FormData battlePlans, MultipartBodyLengthLimit InvalidDataException 134,217,728 (128 MB) Startup.ConfigureServices MultipartBodyLengthLimit , RequestFormLimitsAttribute MultipartBodyLengthLimit, Razor Pages Startup.ConfigureServices , Razor Pages MVC , Kestrel 30,000,000 28.6 MB MaxRequestBodySizeKestrel , RequestSizeLimitAttribute MaxRequestBodySize , Razor Pages MVC , @attributeRazor RequestSizeLimitAttribute, (maxAllowedContentLength) 30,000,000 28.6 MB web.config 50 MB52,428,800 , maxAllowedContentLength IIS , Kestrel Kestrel Kestrel , IFormFile null HTML multipart/form-data enctype