The ViewData element named CurrentSort provides the view with the current sort order, because this must be included in the paging links in order to keep the sort order the same while paging. Enforcement of the warning code is restored at the close of the class definition. There's already a hidden field (Html.HiddenFor helper) for the course number in the Edit view. In Views\Instructor\Edit.cshtml, after the div elements for the Hire Date field, add a new field for editing the office location: Run the page (select the Instructors tab and then click Edit on an instructor). But it doesn't understand that because the number is meaningful you want to see it in the other views, so you need to add it manually. For example, the .NET Framework implementation of the Contains method performs a case-sensitive comparison by default, but in SQL Server this is determined by the collation setting of the SQL Server instance. }, HomeController : Controller The search string is changed when a value is entered in the text box and the Submit button is pressed. That would ensure that results stay the same if you change the code later to use a repository which returns an IEnumerable collection instead of an IQueryable object. If targeting .NET Framework or .NET Core 1.x, add the Microsoft.AspNetCore.StaticFiles NuGet package to the project: The preceding NuGet package is already installed if targeting .NET Core 2.x and using the metapackage. Replace the code in Views/Students/Index.cshtml, with the following code to add column heading hyperlinks. name: }); [Bind] does not affect input formatters. To opt into the 2.0 format, set the SerializeAsV2 property in Program.cs: Swagger provides options for documenting the object model and customizing the UI to match your theme. Since the view doesn't have a collection of Course entities, the model binder can't automatically update the Courses navigation property. The changed lines are highlighted. Web[Bind] attribute. The code adds eager loading for the Courses navigation property and calls the new PopulateAssignedCourseData method to provide information for the check box array using the AssignedCourseData view model class. Add a

element above the Delete action: The Swagger UI displays the inner text of the preceding code's

element: The UI is driven by the generated JSON schema: Add a element to the Create action method documentation. You can't perform eager loading with the Find method, so the Where and Single methods are used instead to select the instructor. The method accepts the optional selectedDepartment parameter that allows the calling code to specify the item that will be selected when the drop-down list is rendered. In the new folder, add a class file EnrollmentDateGroup.cs and replace the template code with the following code: In HomeController.cs, add the following using statements at the top of the file: Add a class variable for the database context immediately after the opening curly brace for the class, and get an instance of the context from ASP.NET Core DI: Add an About method with the following code: The LINQ statement groups the student entities by enrollment date, calculates the number of entities in each group, and stores the results in a collection of EnrollmentDateGroup view model objects. For more information, see Swashbuckle, ApiExplorer, and Routing. { For many-to-many relationships, the Entity Framework doesn't expose the join table directly, so you add and remove entities to and from the appropriate navigation properties. Learn how to move your validation logic out of your controller actions and into a separate service layer. After changing course assignments, you'll want to be able to verify the changes when the site returns to the Index page. In this tutorial you'll update related data. The department name in the Index page list comes from the navigation property, showing that the relationship was established correctly. ASP.NET Core MVC ASP.NET Core URLURL Add an Action link on login page if the user forgets his/her password.The link redirects the user to the below page from where the user can get a reset link on the registered email id. Therefore, this code results in a single query that's not executed until the return View statement. For collections that are much larger, a different UI and a different updating method would be required. In this case you don't need to use the ViewBag object, because the information you want to display is already in the Courses navigation property of the Instructor entity that you're passing to the page as the model. In Views\Instructor\Edit.cshtml, add a Courses field with an array of check boxes by adding the following code immediately after the div elements for the OfficeAssignment field and before the div element for the Save button: After you paste the code, if line breaks and indentation don't look like they do here, manually fix everything so that it looks like what you see here. To accomplish this, you'll do the following: Create a SchoolViewModels folder in the Models folder. { The configuration action passed to the AddSwaggerGen method adds information such as the author, license, and description. Gets the current Instructor entity from the database using eager loading for the OfficeAssignment navigation property. If the check box for a course was selected but the course isn't in the Instructor.Courses navigation property, the course is added to the collection in the navigation property. WebI had the same problem. For example, ./swagger/v1/swagger.json. When ToListAsync is called on the IQueryable, it will return a List containing only the requested page. Note. It's setting up data for a drop-down list, but you what you need is a text box. A CreateAsync method is used instead of a constructor to create the PaginatedList object because constructors can't run asynchronous code. To support the [ProducesResponseType] decoration, the Swashbuckle.AspNetCore.Annotations package offers extensions to enable and enrich the response, schema, and parameter metadata. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. In Views\Instructor\Create.cshtml, add an office location text box and course check boxes after the hire date field and before the Submit button. This code uses the information in ViewData properties to set up hyperlinks with the appropriate query string values. WebAPI ; GET /api/todoitems: : None: : GET /api/todoitems/{id} ID : None The Instructor entity has a one-to-zero-or-one relationship with the OfficeAssignment entity, which means you must handle the following situations: Open InstructorController.cs and look at the HttpGet Edit method: The scaffolded code here isn't what you want. That would prevent the optimizer from using an index. The PaginatedList.CreateAsync method takes a page number. Advance to the next tutorial to learn how to handle data model changes by using migrations. In CourseController.cs, delete the four Create and Edit methods and replace them with the following code: Add the following using statement at the beginning of the file: The PopulateDepartmentsDropDownList method gets a list of all departments sorted by name, creates a SelectList collection for a drop-down list, and passes the collection to the view in a ViewBag property. For Course entities the scaffolder does include an text box for the CourseID field because it understands that the DatabaseGeneratedOption.None attribute means the user should be able enter the primary key value. The drop-down list sets the Course.DepartmentID foreign key property, and that's all the Entity Framework needs in order to load the Department navigation property with the appropriate Department entity. There are three main components to Swashbuckle: Swashbuckle.AspNetCore.Swagger: a Swagger object model and middleware to expose SwaggerDocument objects as JSON endpoints. ActionResult Return Type. Normally the scaffolder doesn't scaffold a primary key because the key value is generated by the database and can't be changed and isn't a meaningful value to be displayed to users. These are ternary statements. In the previous tutorial you displayed related data. In Views\Instructor\Index.cshtml, add a Courses heading immediately following the Office heading, as shown in the following example: Then add a new detail cell immediately following the office location detail cell: Run the Instructor Index page to see the courses assigned to each instructor. { The result would normally be the same but in some cases may be different. The parameter will be a string that's either "Name" or "Date", optionally followed by an underscore and the string "desc" to specify descending order. ActionResult ActionResult ActionResult IActionResult , Microsoft Edge , Internet Explorer Microsoft Edge , , ASP.NET Core MVC , ASP.NET Core MVC , Swagger/OpenAPI ASP.NET Core Web API , , 404 , , ASP.NET Core 400 (, "XYZ Widget" , 201 , 400 , , "XYZ Widget" 400 . In this tutorial you'll update related data. APIoverride OnAuthorization() 401. This code creates an HTML table that has three columns. To serve the Swagger UI at the app's root (http://localhost:/), set the RoutePrefix property to an empty string: If using directories with IIS or a reverse proxy, set the Swagger endpoint to a relative path using the ./ prefix. routes.MapRoute( For more information, see Use web API conventions. Now you'll enhance the Instructor Edit page by adding the ability to change course assignments using a group of check boxes. You'll use the scaffolded code, but change it slightly to add error handling and sort the drop-down list. To support backwards compatibility, you can opt into exposing JSON in the 2.0 format instead. More info about Internet Explorer and Microsoft Edge. Adding triple-slash comments to an action enhances the Swagger UI by adding the description to the section header. At the end of the Index method, the PaginatedList.CreateAsync method converts the student query to a single page of students in a collection type that supports paging. {, .Equals( http://localhost:****/Account/ResetPassword?email=**************.com&code=UNbRRYVXWO4mqC15Gfdpaw2. The W3C guidelines recommend that you should use GET when the action doesn't result in an update. The null-coalescing operator defines a default value for a nullable type; the expression (pageNumber ?? In InstructorController.cs, delete the HttpGet and HttpPost Create methods, and then add the following code in their place: This code is similar to what you saw for the Edit methods except that initially no courses are selected. The Swagger UI can be found at http://localhost:/swagger. Run the app, select the Students tab, enter a search string, and click Search to verify that filtering is working. { The properties HasPreviousPage and HasNextPage can be used to enable or disable Previous and Next paging buttons. [HttpGet(, MyApiControllerAttribute:Attribute, IRouteTemplateProvider The query string value is provided by ASP.NET Core MVC as a parameter to the action method. In this article. MVC Upload File Home public ActionResult { The first time the page is displayed, or if the user hasn't clicked a paging or sorting link, all the parameters will be null. routes.MapRoute( Finally, the list is passed to the view in a ViewBag property. The UseSwaggerUI method call enables the Static File Middleware. The response types and error codes are denoted in the XML comments and data annotations. The first time the Index page is requested, there's no query string. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Launch the app and navigate to https://localhost:/swagger/v1/swagger.json. The ViewData element named CurrentFilter provides the view with the current filter string. The relationship between the Course and Instructor entities is many-to-many, which means you do not have direct access to the foreign key properties which are in the join table. Add the [Required] attribute to the Name property of the TodoItem class: The presence of this attribute changes the UI behavior and alters the underlying JSON schema: Add the [Produces("application/json")] attribute to the API controller. The Swagger UI can be found at https://localhost:/swagger. The user can select or clear check boxes to change course assignments. This is how the forgot password page looks .The user needs to enter the registered and valid email id on which the reset link will be sent. Add a Views/Home/About.cshtml file with the following code: Run the app and go to the About page. boolresetResponse=WebSecurity.ResetPassword(model.ReturnToken,model.Password); 10 SEO Tips For Technical Writers And Software Developers. The element content can consist of text, JSON, or XML. On clicking the above link you will be redirected to a reset password page with the return/ reset token. To serve the Swagger UI at the app's root (https://localhost:/), set the RoutePrefix property to an empty string: If using directories with IIS or a reverse proxy, set the Swagger endpoint to a relative path using the ./ prefix. (When you call the Contains method on an IEnumerable collection, you get the .NET Framework implementation; when you call it on an IQueryable object, you get the database provider implementation.) Click Edit on an instructor to see the Edit page. After you paste the code, fix line breaks and indentation as you did earlier for the Edit page. Run the Create page and add an instructor. by Jon Galloway. The view will use this property to determine which check boxes must be displayed as selected. In each column is a check box followed by a caption that consists of the course number and title. }URLHomeController.Index, app.UseMvcWithDefaultRoute() , UseMvc UseMvcWithDefaultRoute RouteMiddlewareMVCMVCMvcRouteHandlerUseMvc, UseMvc UseMvc UseMvc UseMvcWithDefaultRoute, routes.MapRoute(name: "default",template: "{controller=Home}/{action=Index}/{id? For most relationships, this can be done by updating either foreign key fields or navigation properties. }; For the Contoso University website's About page, you'll display how many students have enrolled for each enrollment date. To opt into the 2.0 format, set the SerializeAsV2 property in Startup.Configure: In the Startup class, add the following namespaces: The configuration action passed to the AddSwaggerGen method adds information such as the author, license, and description: In the Startup class, import the following namespace to use the OpenApiInfo class: Manually add the highlighted lines to the .csproj file: To suppress warnings only for specific members, enclose the code in #pragma warning preprocessor directives. Links to other Entity Framework resources can be found in ASP.NET Data Access - Recommended Resources. The changes are highlighted. routes.MapRoute( This value must be included in the paging links in order to maintain the filter settings during paging, and it must be restored to the text box when the page is redisplayed. For example, use http://localhost://swagger/v1/swagger.json instead of http://localhost:///swagger/v1/swagger.json. The method signature is now different from the HttpGet Edit method, so the method name changes from EditPost back to Edit. Web ControllerBase ActionResult return BadRequest(); return new BadRequestResult(); [ProducesResponseType] ControllerBase ActionResult return BadRequest(); return new BadRequestResult(); [ProducesResponseType] The students are displayed in ascending order by last name, which is the default as established by the fall-through case in the switch statement. When you edit an instructor record, you want to be able to update the instructor's office assignment. These two statements enable the view to set the column heading hyperlinks as follows: The method uses LINQ to Entities to specify the column to sort by. "PleasefindthePasswordResetLink. ASP.NET Core supports returning the ActionResult type from Web API controller actions. The following example uses attributes to specify the supported HTTP action verb and any known HTTP status codes app.UseMvc(); Template, template.ToString() Swashbuckle.AspNetCore.SwaggerUI: an embedded version of the Swagger UI tool. For example, the following message indicates a violation of warning code 1591: To suppress warnings project-wide, define a semicolon-delimited list of warning codes to ignore in the project file. Run the following command from the Integrated Terminal: Add the Swagger generator to the services collection in Program.cs: Enable the middleware for serving the generated JSON document and the Swagger UI, also in Program.cs: The preceding code adds the Swagger middleware only if the current environment is set to Development. The InputFile component renders an HTML element of type file.By default, the user selects single files. Without this code, you would get a referential integrity error if you tried to delete an instructor who was assigned as administrator for a department. URLprotocol: Url.Action("Edit", "Blog",new { id=1},protocol:Request.Scheme); IUrlHelper Url.RouteUrl URL, HTML URLHtmlHelper HtmlHelper Html.BeginForm Html.ActionLink

Url.ActionURLUrl.RouteLink ,TagHelperform TagHelperURLIUrlHelper IUrlHelper Url URL, URLControllerControllerBase , Url.Action("Index", "Home") URL, URLURLblogURL {controller=Home,action=Index}{controller=Blogaction=Index}default, Areas MVC, URL /OManage/Order/Edit {area = OMS,controller = Order , action = Edit}areaareaMapRoute, MapAreaRoutearea OMS {area = OMS}{area = OMS} URL, AreaAttribute OMS [Area] , URLURL, IActionConstraint[HttpGet] IActionConstraint , IActionConstraintHTTP, IActionConstraint URLIActionConstraint , IActionConstraint System.Attribute MVC IActionConstraint, Accept truecountry RouteValueAttribute en-US fr-FR, [CountrySpecific()] , Order [HttpGet] Order. For more information, see Use web API conventions. Add the multiple attribute to permit the user to upload multiple files at once.. Specify multiple warning codes with a comma-delimited list. For a list of all available methods and properties, see ControllerBase.. {, countryCode) Launch the app, and navigate to http://localhost:/swagger/v1/swagger.json. The TryUpdateModel overload used enables you to list the properties you want to include. This requires grouping and simple calculations on the groups. Change the Office Location and click Save. In the project folder, create PaginatedList.cs, and then replace the template code with the following code. Here you are calling the Where method on an IQueryable object, and the filter will be processed on the server. Change some course assignments and click Save. In StudentsController.cs, replace the Index method with the following code: This code receives a sortOrder parameter from the query string in the URL. Swashbuckle can be added with the following approaches: Go to View > Other Windows > Package Manager Console, Navigate to the directory in which the .csproj file exists. Notice that the URL contains the search string. Appending the warning codes to $(NoWarn); applies the C# default values too. Create the About method in the Home controller. Instead of using the model binder to update the Courses navigation property, you'll do that in the new UpdateInstructorCourses method. To add sorting to the Student Index page, you'll change the Index method of the Students controller and add code to the Student Index view. Any non-abstract class deriving from ActionResult qualifies as a valid return type. In the following example, only the specified properties of the Instructor model are bound when any handler or action method is called: [Bind("LastName,FirstMidName,HireDate")] public class The default sort order is ascending. In the preceding code, Reflection is used to build an XML file name matching that of the web API project. In Views/Student/Index.cshtml, add the highlighted code immediately before the opening table tag in order to create a caption, a text box, and a Search button. }, HomeController : Controller If the number of courses were much greater, you would probably want to use a different method of presenting the data in the view, but you'd use the same method of manipulating navigation properties in order to create or delete relationships. You've also added to the LINQ statement a where clause that selects only students whose first name or last name contains the search string. Replace the HttpPost Edit method with the following code. The two ViewData elements (NameSortParm and DateSortParm) are used by the view to configure the column heading hyperlinks with the appropriate query string values. The following illustration shows what the page will look like when you're done. Specify multiple warning codes with a comma-delimited list. _baseNamespace, Apply(ControllerModel controller) For example, ./swagger/v1/swagger.json. The Create action returns an HTTP 201 status code on success. ViewData[, BlogController : Controller The value attribute of each check box is set to the value of CourseID. In the previous tutorial, you implemented a set of web pages for basic CRUD operations for Student entities. Because the work performed by a Task object typically executes asynchronously on a thread pool thread In this article. First, look at the base and derived types of ActionResult. Add the Swagger generator to the services collection in the Startup.ConfigureServices method: In the Startup.Configure method, enable the middleware for serving the generated JSON document and the Swagger UI: Swashbuckle relies on MVC's Microsoft.AspNetCore.Mvc.ApiExplorer to discover the routes and endpoints. Here you are calling the Where method on an IQueryable object, and the filter will be processed on the server. Without proper documentation in the Swagger UI, the consumer lacks knowledge of these expected outcomes. The check boxes all have the same name ("selectedCourses"), which informs the model binder that they are to be treated as a group. The changes you make are reflected on the Index page. When a new course entity is created, it must have a relationship to an existing department. File selection isn't cumulative when using an InputFile component or its underlying HTML //swagger/v1/swagger.json instead of https://localhost:///swagger/v1/swagger.json. To add paging to the Students Index page, you'll create a PaginatedList class that uses Skip and Take statements to filter data on the server instead of always retrieving all rows of the table. Replace the EditPost method with the following code, which calls a new method that updates the Courses navigation property of the Instructor entity. The code for Resetting password is as below: public ActionResult bool resetResponse = WebSecurity.ResetPassword(model.ReturnToken, If the search string is changed during paging, the page has to be reset to 1, because the new filter can result in different data to display. Therefore, you need to add a column to the table in that page. To create efficient lookup when checking whether a course is assigned to the instructor, the courses assigned to the instructor are put into a HashSet collection. The AppContext.BaseDirectory property is used to construct a path to the XML file. Change data on the page and click Save. Swashbuckle.AspNetCore.SwaggerGen: a Swagger generator that builds SwaggerDocument objects directly from your routes, controllers, and models.
". The Microsoft.AspNetCore.Mvc namespace provides attributes that can be used to configure the behavior of web API controllers and action methods. It includes built-in test harnesses for the public methods. Some common return types in this category are BadRequestResult (400), NotFoundResult (404), and OkObjectResult (200). WebThere are three main components to Swashbuckle: Swashbuckle.AspNetCore.Swagger: a Swagger object model and middleware to expose SwaggerDocument objects as JSON endpoints.. Swashbuckle.AspNetCore.SwaggerGen: a Swagger generator that builds SwaggerDocument objects directly from your routes, controllers, and models. The following illustration shows the paging buttons. Fix that problem by adding the highlighted lines in the following example: The Swagger UI now clearly documents the expected HTTP response codes: Conventions can be used as an alternative to explicitly decorating individual actions with [ProducesResponseType]. The preceding UseSwaggerUI method call enables the Static File Middleware. Make the same change in Views\Course\Edit.cshtml. If you bookmark this page, you'll get the filtered list when you use the bookmark. by Stephen Walther. template.Append(namespc,_baseNamespace.Length, controller.Selectors) When the page is posted, the model binder passes an array to the controller that consists of the CourseID values for only the check boxes which are selected. If the office location is blank, sets the Instructor.OfficeAssignment property to null so that the related row in the OfficeAssignment table will be deleted. As you know, an action is referred to as a method of the controller, the Action Result is the result of action when it executes. The Assigned property is set to true for courses the instructor is assigned. ASP.NET Core MVC ASP.NET Core URLURLSEOWeb, URL(Action)URLURL, (Attribute Routing) , ASP.NET Core MVC URL, ASP.NET Core WebStartupConfigure, UseMvcMapRouteMVC, {controller=Home}/{action=Index}/{id?} { Add an Action link on login page if the user forgets his/her password.The link redirects the user to the below page from where the user can get a reset link on the registered email id. The following illustrations show some of the pages that you'll work with. Configure Swagger to use the XML file that's generated with the preceding instructions. The ResetPassword() method in web security is used to reset the password with the help of return token of the registered user. You'll fix that in the next section. You could call the ToUpper method to make the test explicitly case-insensitive: Where(s => s.LastName.ToUpper().Contains(searchString.ToUpper()). The column headings are links that the user can click to sort by that column. _countryCode,StringComparison.OrdinalIgnoreCase); Explore the API via Swagger UI and incorporate it in other programs. If the instructor is assigned as administrator of any department, removes the instructor assignment from that department. For Linux or non-Windows operating systems, file names and paths can be case-sensitive. Then enter a search string and try paging again to verify that paging also works correctly with sorting and filtering. When you create and modify IQueryable variables, no query is sent to the database. Next, add the code that's executed when the user clicks Save. Using /swagger/v1/swagger.json instructs the app to look for the JSON file at the true root of the URL (plus the route prefix, if used). //GetandsettheAppSettingsusingconfigurationmanager. {, controller.ControllerTypeInfo -> "My.Application.Admin.UsersController", baseNamespace -> "My.Application", template => "Admin/[controller]", StringBuilder(); Clicking a column heading repeatedly toggles between ascending and descending sort order. To inject additional CSS stylesheets, add them to the project's wwwroot folder and specify the relative path in the middleware options: View or download sample code (how to download), Navigate to the directory in which the TodoApi.csproj file exists. { To=UserName,UserID,Password,SMTPPort,Host; token=WebSecurity.GeneratePasswordResetToken(UserName); //Ifuserdoesnotexistorisnotconfirmed. This code uses the tag helper to add the search text box and button. [Route(, IActionResult About() This 2.0 format is important for integrations such as Microsoft Power Apps and Microsoft Flow that currently support OpenAPI version 2.0. { {, baseNamespace) This doesn't require any change to the code that calls TryUpdateModel because you're using the explicit list overload and Courses isn't in the include list. In the following example, warning code CS1591 is ignored for the entire Program class. For example, a TodoApi.XML file is valid on Windows but not CentOS. 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