Mvc Return Error From Controller
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How To Display A Error Message In View From Controller,mvc 4
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it only takes a minute: Sign up Controller to Return an Error Message Instead of a View? up vote 7 down vote favorite 2 I'm fairly new to ASP.NET MVC and am not sure how best to handle the following
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situation. A method in my controller needs to load some data based on an ID argument. Under normal circumstances, this ID argument will be set to a valid ID of an entity within my database. I construct some data and place it in ViewBag, which the view uses to render the page. However, I would like some basic error handling just in case the ID argument is not valid. Although I could write a bunch of error handling code in mvc model error message the view, it would be much simpler not to display the view if there is a major misuse or malfunction of the site. Is there a way the controller could simply return a "Item not found" string or something like that, and display that rather than the normal view? Or perhaps someone can suggest a better idea? asp.net-mvc share|improve this question asked Dec 7 '11 at 6:54 Jonathan Wood 36.2k40157244 add a comment| 4 Answers 4 active oldest votes up vote 20 down vote accepted if (itemId == null) { return Content("Item not found"); } Or if you want to return an HTTP 404 instead: throw new HttpException(404, "Item Not Found"); share|improve this answer answered Dec 7 '11 at 6:57 Chris Fulstow 26k45986 6 I have forgotten this a few times now and the correct answer is hard to find, but for future googlers, this way is better: return new HttpStatusCodeResult(404, "Item Not Found");. It doesn't throw an exception and is obviously not limited to 404 errors. –Maverick Jul 8 '14 at 5:15 add a comment| up vote 7 down vote In case fetching model from database (as described in Darin's answer) is somehow complicated and cannot be made generic, this is how I deal with resources not found. Implement your base controller public abstract class MyBaseController : Controller { [NonAction] protected virtual void EnsureResourceFound(object resource) { if (resource == null) { HttpStatusCode statusCode = HttpStatusC
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the show message in mvc 4 workings and policies of this site About Us Learn more about Stack mvc error message attribute Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs viewbag error message Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join http://stackoverflow.com/questions/8411495/controller-to-return-an-error-message-instead-of-a-view them; it only takes a minute: Sign up return error message with actionResult up vote 10 down vote favorite 2 MVC App, client makes request to server, error happens, want to send the msg back to the client. Tried HttpStatusCodeResult but just returns a 404 with no message, I need the details of the error sent back to the client. http://stackoverflow.com/questions/21682581/return-error-message-with-actionresult public ActionResult GetPLUAndDeptInfo(string authCode) { try { //code everything works fine } catch (Exception ex) { Console.WriteLine(ex.Message); return new HttpStatusCodeResult(404, "Error in cloud - GetPLUInfo" + ex.Message); } } c# asp.net-mvc asp.net-mvc-3 actionresult share|improve this question edited Feb 10 '14 at 17:27 MikeSmithDev 11.6k43059 asked Feb 10 '14 at 16:26 John 1,26542864 add a comment| 4 Answers 4 active oldest votes up vote 7 down vote You need to return a view which has a friendly error message to the user catch (Exception ex) { // to do :log error return View("Error"); } You should not be showing the internal details of your exception(like exception stacktrace etc) to the user. You should be logging the relevant information to your error log so that you can go through it and fix the issue. If your request is an ajax request, You may return a JSON request with a proper status flag which client can evaluate and do further actions [HttpPost] public ActionResult Create(CustomerVM model) { try { //save customer return Json(new { status="success",message="customer created"}); } catch(Exception ex
controller GridDataSourceAction to the View, for display in the web page? This post has 1 verified answer | 2 Replies | 3 Followers Graeme Hart Points 960 Replied On: Thu, May 15 2014 9:56 AM Reply Hi igniteUI 13.1, MVC 4 http://www.infragistics.com/community/forums/t/89662.aspx I have an igGrid in my MVC view and it is populated via the DataGridModel.DataSourceURL. This http://www.brandonmartinez.com/2012/08/28/return-a-500-error-in-asp-net-mvc/ calls a method in my controller to get the data, which takes the form of a strongly typed data table. Under certain circumstances something can go wrong in the controller which prevents the data from being retrieved. When this happens I need to get a message back to the View stating the problem. In this particular case the grid data is populated in part error message from an external website via an API which has a transactions per hour limit on it. When my system exceeds that limit I get no data data but I do get a message telling me how long I must wait before trying again. I want to get that message back to my view. eg "API call limit exceeded, try again after 35 minutes". I have tried various things but I can't figure out how to get an error message back how to display to the View from the GridDataSource action method in my controller. Here it is as it stands right now: [GridDataSourceAction]public ActionResult GetTicketGridData(){ dsHelpdesk oTickets = new dsHelpdesk(); Exception oException = null; try { oTickets = clsInvoiceHelper.GetTicketData(); } catch (Exception ex) { oTickets = null; oException = ex; }// try if (oTickets == null) { return View(ACTION_InvoicePrepGetData, oException.Message); } else { return View(ACTION_InvoicePrepGetData, oTickets); }}// GetTicketGridData The above code results in the Load animation running forever and nothing comes back to my view. Under the hood a Object reference not set to an instance of an object exception is thrown, presumably because the datatable is not being returned from my controller method. The best that I have come up with is to clear out the datatable and insert a new row with the error message in one of its string fields. This just looks awful on the web page. If I could intercept this duff data row I could work around this but I can't find the right event eg a AfterDataLoaded event on the grid or igDatasource. Regards, Graeme Reply Post Points: 35 Verified Answer Daniel Dority Points 2,715 Replied On: Thu, May 15 2014 5:37 PM Reply Verified by Graeme Hart You can manually do an AJAX request yourself instead of using the MVC Helper. This way you get full control. For example: $.ajax({ url: "{controller}/GetTicketGridData", type: "POST", cache: false, success: function(data) { $("#selector").igGrid("option", "dataSource", data);$("#selector").igGrid("dataBind"); },
do you return a 500 Server Error (or any other HTTP Status Code) from ASP.NET MVC? Thankfully, it's extremely simple; all you have to do is return a new HttpStatusCodeResult with whatever code you'd like: return new HttpStatusCodeResult(500); "500" can be replaced with whatever HTTP Status Code you'd like. Reference: HttpStatusCodeResult Class on MSDN I am a 27-year-old software engineer working remotely for Skyline Technologies. I currently live in Ludington, Michigan with my wife and two sons. I enjoy spending time with my family and friends, photography, and playing guitar. More about me. Content Streams Food Personal Photography Technology Associations Content on this site does not necessarily reflect the views of these associations. My GearMy Photography Gear My Shaving Gear Flair Copyright © 2006 – 2016, Brandon Martinez. All rights reserved. A Martinez Media site. The content on the site does not necessarily represent the views of my employer. Articles are the original work of the author, unless otherwise expressed. In no means is this site meant to be a legal guide or present legal advice beyond my observation. I make no warranties or guarantees on the content provided. Reproduction is not permitted, with the exception of using an excerpt, given that a link with proper citation is provided. If uncertain, please contact Brandon.