CRUD Operations In ASP.NET MVC 5 Using ADO.NET

Background

After awesome response of an published by me in the year 2013: Insert, Update, Delete In GridView Using ASP.Net C#. It now has more than 140 K views, therefore to help beginners I decided to rewrite the article i with stepbystep approach using ASP.NET MVC, since it is a hot topic in the market today. I have written this article focusing on beginners so they can understand the basics of MVC. Please read my previous article using the following links to understand the basics about MVC:
ActionResult in ASP.NET MVC
Creating an ASP.NET MVC Application

Step 1 : Create an MVC Application.

Now let us start with a stepbystep approach from the creation of simple MVC application as in the following:

"Start", then "All Programs" and select "Microsoft Visual Studio 2015".

"File", then "New" and click "Project..." then select "ASP.NET Web Application Template", then provide the Project a name as you wish and click on OK. After clicking, the following window will appear:

As shown in the preceding screenshot, click on Empty template and check MVC option, then click OK. This will create an empty MVC web application whose Solution Explorer will look like the following:

Step 2: Create Model Class

Now let us create the model class named EmpModel.cs by right clicking on model folder as in the following screenshot:

Note: It is not mandatory that Model class should be in Model folder, it is just for better readability you can create this class anywhere in the solution explorer. This can be done by creating different folder name or without folder name or in a separate class library.

EmpModel.cs class code snippet:

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public class EmpModel { [Display(Name = "Id")] public int Empid { get; set; } [Required(ErrorMessage = "First name is required.")] public string Name { get; set; } [Required(ErrorMessage = "City is required.")] public string City { get; set; } [Required(ErrorMessage = "Address is required.")] public string Address { get; set; } }

In the above model class we have added some validation on properties with the help of DataAnnotations.

Step 3: Create Controller.

Now let us add the MVC 5 controller as in the following screenshot:

After clicking on Add button it will show the following window. Now specify the Controller name as Employee with suffix Controller as in the following screenshot:

Note: The controller name must be having suffix as 'Controller' after specifying the name of controller.

After clicking on Add button controller is created with by default code that support CRUD operations and later on we can configure it as per our requirements.

Step 4 : Create Table and Stored procedures.

Now before creating the views let us create the table name Employee in database according to our model fields to store the details:

I hope you have created the same table structure as shown above. Now create the stored procedures to insert, update, view and delete the details as in the following code snippet:

• To Insert Records

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Create procedure [dbo].[AddNewEmpDetails] ( @Name varchar (50), @City varchar (50), @Address varchar (50) ) as begin Insert into Employee values(@Name,@City,@Address) End

• To View Added Records

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Create Procedure [dbo].[GetEmployees] as begin select *from Employee End

• To Update Records

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Create procedure [dbo].[UpdateEmpDetails] ( @EmpId int, @Name varchar (50), @City varchar (50), @Address varchar (50) ) as begin Update Employee set Name=@Name, City=@City, Address=@Address where Id=@EmpId End

• To Delete Records

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Create procedure [dbo].[DeleteEmpById] ( @EmpId int ) as begin Delete from Employee where Id=@EmpId End

Step 5: Create Repository class.

Now create Repository folder and Add EmpRepository.cs class for database related operations, after adding the solution explorer will look like the following screenshot:

Now create methods in EmpRepository.cs to handle the CRUD operation as in the following screenshot:

• EmpRepository.cs

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public class EmpRepository { private SqlConnection con; //To Handle connection related activities private void connection() { string constr = ConfigurationManager.ConnectionStrings["getconn"].ToString(); con = new SqlConnection(constr); } //To Add Employee details public bool AddEmployee(EmpModel obj) { connection(); SqlCommand com = new SqlCommand("AddNewEmpDetails", con); com.CommandType = CommandType.StoredProcedure; com.Parameters.AddWithValue("@Name", obj.Name); com.Parameters.AddWithValue("@City", obj.City); com.Parameters.AddWithValue("@Address", obj.Address); con.Open(); int i = com.ExecuteNonQuery(); con.Close(); if (i >= 1) { return true; } else { return false; } } //To view employee details with generic list public List<EmpModel> GetAllEmployees() { connection(); List<EmpModel> EmpList =new List<EmpModel>(); SqlCommand com = new SqlCommand("GetEmployees", con); com.CommandType = CommandType.StoredProcedure; SqlDataAdapter da = new SqlDataAdapter(com); DataTable dt = new DataTable(); con.Open(); da.Fill(dt); con.Close(); //Bind EmpModel generic list using dataRow foreach (DataRow dr in dt.Rows) { EmpList.Add( new EmpModel { Empid = Convert.ToInt32(dr["Id"]), Name =Convert.ToString( dr["Name"]), City = Convert.ToString( dr["City"]), Address = Convert.ToString(dr["Address"]) } ); } return EmpList; } //To Update Employee details public bool UpdateEmployee(EmpModel obj) { connection(); SqlCommand com = new SqlCommand("UpdateEmpDetails", con); com.CommandType = CommandType.StoredProcedure; com.Parameters.AddWithValue("@EmpId", obj.Empid); com.Parameters.AddWithValue("@Name", obj.Name); com.Parameters.AddWithValue("@City", obj.City); com.Parameters.AddWithValue("@Address", obj.Address); con.Open(); int i = com.ExecuteNonQuery(); con.Close(); if (i >= 1) { return true; } else { return false; } } //To delete Employee details public bool DeleteEmployee(int Id) { connection(); SqlCommand com = new SqlCommand("DeleteEmpById", con); com.CommandType = CommandType.StoredProcedure; com.Parameters.AddWithValue("@EmpId", Id); con.Open(); int i = com.ExecuteNonQuery(); con.Close(); if (i >= 1) { return true; } else { return false; } } }

Step 6 : Create Methods into the EmployeeController.cs file.

Now open the EmployeeController.cs and create the following action methods:

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public class EmployeeController : Controller { // GET: Employee/GetAllEmpDetails public ActionResult GetAllEmpDetails() { EmpRepository EmpRepo = new EmpRepository(); ModelState.Clear(); return View(EmpRepo.GetAllEmployees()); } // GET: Employee/AddEmployee public ActionResult AddEmployee() { return View(); } // POST: Employee/AddEmployee [HttpPost] public ActionResult AddEmployee(EmpModel Emp) { try { if (ModelState.IsValid) { EmpRepository EmpRepo = new EmpRepository(); if (EmpRepo.AddEmployee(Emp)) { ViewBag.Message = "Employee details added successfully"; } } return View(); } catch { return View(); } } // GET: Employee/EditEmpDetails/5 public ActionResult EditEmpDetails(int id) { EmpRepository EmpRepo = new EmpRepository(); return View(EmpRepo.GetAllEmployees().Find(Emp => Emp.Empid == id)); } // POST: Employee/EditEmpDetails/5 [HttpPost] public ActionResult EditEmpDetails(int id,EmpModel obj) { try { EmpRepository EmpRepo = new EmpRepository(); EmpRepo.UpdateEmployee(obj); return RedirectToAction("GetAllEmpDetails"); } catch { return View(); } } // GET: Employee/DeleteEmp/5 public ActionResult DeleteEmp(int id) { try { EmpRepository EmpRepo = new EmpRepository(); if (EmpRepo.DeleteEmployee(id)) { ViewBag.AlertMsg = "Employee details deleted successfully"; } return RedirectToAction("GetAllEmpDetails"); } catch { return View(); } } }

Step 7: Create Views.

Create the Partial view to Add the employees

To create the Partial View to add Employees, right click on ActionResult method and then click Add view. Now specify the view name, template name and model class in EmpModel.cs and click on Add button as in the following screenshot:

After clicking on Add button it generates the strongly typed view whose code is given below:

• AddEmployee.cshtml

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@model CRUDUsingMVC.Models.EmpModel @using (Html.BeginForm()) { @Html.AntiForgeryToken() <div class="form-horizontal"> <h4>Add Employee</h4> <div> @Html.ActionLink("Back to Employee List", "GetAllEmpDetails") </div> <hr /> @Html.ValidationSummary(true, "", new { @class = "text-danger" }) <div class="form-group"> @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Name, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> @Html.LabelFor(model => model.City, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.City, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.City, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> @Html.LabelFor(model => model.Address, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Address, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Address, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> <div class="col-md-offset-2 col-md-10"> <input type="submit" value="Save" class="btn btn-default" /> </div> </div> <div class="form-group"> <div class="col-md-offset-2 col-md-10" style="color:green"> @ViewBag.Message </div> </div> </div> } <script src="~/Scripts/jquery-1.10.2.min.js"></script> <script src="~/Scripts/jquery.validate.min.js"></script> <script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>

• To View Added Employees

To view the employee details let us create the partial view named GetAllEmpDetails:

Now click on add button, it will create GetAllEmpDetails.cshtml strongly typed view whose code is given below:

• GetAllEmpDetails.CsHtml

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@model IEnumerable<CRUDUsingMVC.Models.EmpModel> <p> @Html.ActionLink("Add New Employee", "AddEmployee") </p> <table class="table"> <tr> <th> @Html.DisplayNameFor(model => model.Name) </th> <th> @Html.DisplayNameFor(model => model.City) </th> <th> @Html.DisplayNameFor(model => model.Address) </th> <th></th> </tr> @foreach (var item in Model) { @Html.HiddenFor(model => item.Empid) <tr> <td> @Html.DisplayFor(modelItem => item.Name) </td> <td> @Html.DisplayFor(modelItem => item.City) </td> <td> @Html.DisplayFor(modelItem => item.Address) </td> <td> @Html.ActionLink("Edit", "EditEmpDetails", new { id = item.Empid }) | @Html.ActionLink("Delete", "DeleteEmp", new { id = item.Empid }, new { onclick = "return confirm('Are sure wants to delete?');" }) </td> </tr> } </table>

To Update Added Employees

Follow the same procedure and create EditEmpDetails view to edit the employees. After creating the view the code will be like the following:

• EditEmpDetails.cshtml

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@model CRUDUsingMVC.Models.EmpModel @using (Html.BeginForm()) { @Html.AntiForgeryToken() <div class="form-horizontal"> <h4>Update Employee Details</h4> <hr /> <div> @Html.ActionLink("Back to Details", "GetAllEmployees") </div> <hr /> @Html.ValidationSummary(true, "", new { @class = "text-danger" }) @Html.HiddenFor(model => model.Empid) <div class="form-group"> @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Name, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> @Html.LabelFor(model => model.City, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.City, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.City, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> @Html.LabelFor(model => model.Address, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Address, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Address, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> <div class="col-md-offset-2 col-md-10"> <input type="submit" value="Update" class="btn btn-default" /> </div> </div> </div> } <script src="~/Scripts/jquery-1.10.2.min.js"></script> <script src="~/Scripts/jquery.validate.min.js"></script> <script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>

Step 8 : Configure Action Link to Edit and delete the records as in the following figure:

The above ActionLink I have added in GetAllEmpDetails.CsHtml view because from there we will delete and update the records.

Step 9: Configure RouteConfig.cs to set default action as in the following code snippet:

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public class RouteConfig { public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapRoute( name: "Default", url: "{controller}/{action}/{id}", defaults: new { controller = "Employee", action = "AddEmployee", id = UrlParameter.Optional } ); } }

From the above RouteConfig.cs the default action method we have set is AddEmployee. It means that after running the application the AddEmployee view will be executed first.

Now after adding the all model, views and controller our solution explorer will be look like as in the following screenshot:

Step 10: Run the Application

Now run the application the AddEmployee view will be appears are as:

Click on save button, the model state validation will fire, as per validation we have set into the EmpModel.cs class:

Now enter the details and on clicking save button, the records get added into the database and the following message appears.

Now click on Back to Employee List hyperlink, it will be redirected to employee details grid as in the following screenshot:

Now similar to above screenshot, add another record, then the list will be as in the following screenshot:

Now click on Edit button of one of the record, then it will be redirected to Edit view as in the following screenshot:

Now click on Update button, on clicking, the records will be updated into the database. Click Back to Details hyperlink then it will be redirected to the Employee list table with updated records as in the following screenshot:

Now click on delete button for one of the records, then the following confirmation box appears (we have set configuration in ActionLink):

Now click on OK button, then the updated Employee list table will be like the following screenshot:

From the preceding examples we have learned how to implement CRUD operations in ASP.NET MVC using ADO.NET.

Note:

• Configure the database connection in the web.config file depending on your database server location.
• Download the Zip file of the sample application for a better understanding .
• Since this is a demo, it might not be using proper standards, so improve it depending on your skills
• This application is created completely focusing on beginners.

Summary

My next article explains the types of controllers in MVC. I hope this article is useful for all readers. If you have any suggestion then please contact me.

· EOF ·