how to get data from database in mvc controller

Let's add Controller by right click on Controllers folder and select Add => Controller. The records from the SQL Server Database will be retrieved from Table using ADO.Net into Model class object and then the Model is used to display the data in the DropDownList in ASP.Net Core MVC. Search for Entity framework in the search box. This method opens a chain whose members mirror the client-side API of the DevExtreme.AspNet.Data library. The web browser sends an HTTP request to a controller (Servlet). Asking for help, clarification, or responding to other answers. Use "constructor Injection" to resolve the DbContext. Thanks for contributing an answer to Stack Overflow! The View consists of an HTML TextBox element and a Button. In the Add Scaffold dialog box, click MVC 5 Controller with views, using Entity Framework, and then click Add. the Model from public DateTime to DateTimeOffset because the data type in the database for that column is DateTimeOffset and that didn't seem to help in the controller so I commented that property out in the controller. "Public domain": Can I sell prints of the James Webb Space Telescope? Erase the code of ViewData and pass the object of model class in return view. In this article we will see how to read data from SQL Server database using MVC Design pattern. Updates: UserRepository that inherited from the IBaseRepository. I want to change paymentstatus paid of respective BO according to file uploaded next time. Step 6 : Start writing code to model. Or convert the nullableDateTimeOffset? 2. <input type="text" id="firstName" placeholder="Your name goes here" name="firstName" /> You will see that we have no records at the moment. MATLAB command "fourier"only applicable for continous time signals or is it also applicable for discrete time signals? Would it be illegal for me to act as a Civillian Traffic Enforcer? I do get a 'Cannot implicitly convert type 'System.DateTimeOffset?' Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. All Rights Reserved. You learned how to use the ViewResult.ViewName property to verify the name of a view. rev2022.11.3.43003. . The error is very specific. If the null reference were in a .cs file, you wouldn't see App_Web_*.dll since that is the DLL for the compiled pages. Leave the default name ( BookStoreWithData.Models.BookStoreWithDataContext) Click Add. Search for Entity framework in the search box. type to aDateTimeOffset explicitly in the projection query. I'd suggest a separate method GetAllUsers() to your repository - possibly the concrete UserRepository, if you have that: Thanks for contributing an answer to Stack Overflow! Let's complete the Add Controller dialog: Model class: Book ( BookStoreWithData.Models) Data context class: Select the + icon. Once we create userdetails table and stored procedure to insert and get data from database now create asp.net mvc application for that Open visual studio --> Go to File --> Select New --> Project like as shown below This file use Entity Framework interact with the database. This assumes you have theApplicationDbContext setup in the startup.cs. I don't think anyone finds what I'm working on interesting. excel file may contains hundreds of data. Creating Database Table 4. I don't even know where this is coming from. Next step is to add a View for the Controller and while adding you will need to select the PersonModel class created earlier. C# How can i extract files in the directory where they're located with the find command? Does it need to be in brackets [UserName]? Next, we examined how you can test the contents of View Data. (url always in the format of. InvalidOperationException: The model item passed into the ViewDataDictionary is of type 'System.Collections.Generic.List`1[System.String]', but this ViewDataDictionary instance requires a model item of type 'System.Collections.Generic.IEnumerable`1[FE.Models.AspNetUsers]'. class that gets created when wescaffold the Controller and View from Model). Database Here I am making use of Microsoft's Northwind Database. I am posting some json to a controller method. By using. Can an ASP.NET MVC controller return an Image? error on the LockoutEnd property. specify the controller name as Home with suffix controller. Additional information: Object reference not set to an instance of an object. An explicit conversion exists (are you missing a cast?)' application to define properties in our application for that right click on, Once A potentially dangerous Request.Form value was detected from the client. As you can see that there is no data on the view, this is because we have not added any records in our database, which is created by Visual Studio. Should we burninate the [variations] tag? I have defined get, post, put and delete methods using model class to use it in jquery at client side and MVC controller.. About WebApi. You will see the following output. Create Simple Web API with ASP.NET MVC Then follow below steps. The above method gets thedbobject that is nothing but the ApplicationDbContext (ADO.NET Entity Framework)object and calls the PersonalDetails (this is the property in the IdentityModel.cs of ApplicationDbContext Select the Entity Framework and click Install button. Create Controller: Create a Controller HomeController.cs. Does it need to be in brackets [UserName]? GET is used to request data from a specified resource. Right click on Controllers folder of created MVC application and click add empty Controller named HomeController.cs as. Artifact: LearnSpringMVCWithRealApps. Database to 'System.DateTimeOffset'. Once the Entity Framework is installed you will see the message in out window as seen in the above screenshot. How to View data in database using PHP MVC with example. Third way to Binding Dropdownlist. As per MVC design we will create three separate sections, Model, View and Controller. Before we proceed to insert or get data from Select Movie (MvcMovie.Models) for the Model class. we can easily insert Replacing outdoor electrical box at end of conduit. Right-click the Movies table and select Edit Table Schema. it's in the model? IActionResuts usually return a A potentially dangerous Request.Form value was detected from the client. 2. Entity Framework Code First automatically created this schema for you based on your Movie class. to show or get data from database in, Here This is how we can insert and get data from database in asp.net mvc. i injected the IUserRepository correctly i think, How to retrieve data from the database using ASP.NET MVC, 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. Item - contains string. Why do I get two different answers for the current through the 47 k resistor when I do a source transformation? Connect and share knowledge within a single location that is structured and easy to search. Add Entity Framework reference from NuGet package manager. Most tutorials should show using dependency injection but you could start maybe with a class level declaration for now if new as well with dependency injection. asp.net mvc, Post Comments I am trying to loop through the data in the user model navigation property but i am getting an error that its returning null. Is 'Username' a specific property that needs to have some additional coding around it? View. controller action method for that right click on, The newly created view will Step 1: Before we proceed for any of the steps, your need to create a ASP.NET MVC sample project in your Visual Studio, so navigate to File-> New -> Project-> Select "Web . Then we run this application with the following URL http://localhost:63004/Employee. => item.UserId), Html.DisplayFor(modelitem window will open in that enter the name of controller and click Add like as shown The model code for above database table structure is below MODEL CODE 'The name db does not exist in the current context'. By using this website, you agree with our Cookies Policy. On the Visual Studio, create new ASP.NET MVC Web Application project Select Empty Template and Core Reference is MVC ADO.NET Entity Data Model In Models folder, use the Entity Wizard to create Entity Data Model from Database in Visual Studio. Controller folder --, Once we click on Controller It has 7 columns: 1. You forgot to "return" somehting from the method. Your browser opens a download dialog because it doesn't know what to do with this data. There is not enough information to determine your intention. first posted answer and the same answer as the accepted answer. MobileList = new SelectList( MCon.GetMobileList(), "MobileID", "MobileName"); Here is a snapshot to show how to bind. The 2 choices for the result of this query are either going to be NULL or the name of the column name you are searching for SQL Controller name: Keep the default BooksController. like you normally would: 4 5 Lets expand this database and you will see that it has one table which contains all the fields we have in our Employee model class. Print JSON in the View using Model. In the third way everything will be the same but the binding to the DropdownlistFor is different. Click Next button to show Site Information for project. Region - contains 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. So we can access these data in a POST method by passing the Name as an indexer in the Request and get values. we click on Class new popup will open in that give name of your model as , Now we will add new Open Database > Right Click on Table > Add New Table > Add Columns > Save > Enter table name > Ok. Model Class Here we have defined simple Person class to do database operation. The content you requested has been removed. This seems like it will work but I'm getting an error on this line in the controller 'ApplicationUser' does not contain a definition for 'Username' and no accessible extension method 'Username' accepting a first argument of type 'ApplicationUser' could be Right click on Controllers Folder > Add > Controller. connection string name should be matches with the given context [in this Example EmployeeContext ] 5. I get this error when running my project, my view dont even show-up in web-browser. From the next screen, connect to the database where we created the database table. Because you didn't declare db that in your code. Does a creature have to see to be affected by the Fear spell initially since it is an illusion? Description: Learn Spring MVC with Real Apps. In this chapter, we will see how to use a database engine in order to store and retrieve the data needed for your application.

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