CRUD Operation Using ASP.Net MVC-5

In This post we will learn Basic CRUD operation using ASP.Net MVC, JSON, ADO.Net, and Stored Procedure with a sample MVC Application.

Our first step is to create and design a SQL Database, below step’s we have the demonstration of creating a database table and very basic CRUD Stored Procedure.

Let’s Create a Sample Database:
Let’s Create a Sample database named ‘SampleDB’ with SQL Management Studio.Using the ‘SampleDB’ we will create a Table name ‘tblCustomer’.

Create Table Script:

CREATE TABLE [dbo].[tblCustomer](
	[CustID] [bigint] NOT NULL,
	[CustName] [nvarchar](50) NULL,
	[CustEmail] [nvarchar](50) NOT NULL,
	[CustAddress] [nvarchar](256) NULL,
	[CustContact] [nvarchar](50) NULL,
 CONSTRAINT [PK_tblCustomer] PRIMARY KEY CLUSTERED 
(
	[CustID] ASC,
	[CustEmail] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]

GO

Stored Procedure:
Now the step we will go through to perform CRUD operations with stored procedure:

  1. First we will create a stored procedure (SP) to RETRIVE record from Customer table
  2. Now we will create a stored procedure( SP) to INSERT record into Customer table
  3. Now we will create another procedure (SP) to UPDATE existing data in our Customer table.
  4. The last step we will create a stored procedure to DELETE existing record from customer table.

Stored Procedure to RETRIVE Record:

-- =============================================
-- Author:		<Shashangka,,Shekhar>
-- Create date: <05/10/2015,,>
-- Description:	<With this SP we will Retrive Customer Record from Customer Table,,>
-- =============================================
ALTER PROCEDURE [dbo].[READ_CUSTOMER]
	-- Add the parameters for the stored procedure here
	 @PageNo INT
	,@RowCountPerPage INT
	,@IsPaging INT
AS
BEGIN
	-- SET NOCOUNT ON added to prevent extra result sets from
	SET NOCOUNT ON;
    -- Select statements for procedure here

	IF(@IsPaging = 0)
	BEGIN
		SELECT top(@RowCountPerPage)* FROM [dbo].[tblCustomer]
		ORDER BY CustID DESC
	END

	IF(@IsPaging = 1)
	BEGIN
		DECLARE @SkipRow INT
		SET @SkipRow = (@PageNo - 1) * @RowCountPerPage

		SELECT * FROM [dbo].[tblCustomer]
		ORDER BY CustID DESC
	
		OFFSET @SkipRow ROWS FETCH NEXT @RowCountPerPage ROWS ONLY
	END
END

Stored Procedure to INSERT Record:

-- =============================================
-- Author:		<Shashangka,,Shekhar>
-- Create date: <05/10/2015,,>
-- Description:	<With this SP we will Insert Customer Record to Customer Table,,>
-- =============================================
ALTER PROCEDURE [dbo].[CREATE_CUSTOMER]
	-- Add the parameters for the stored procedure here
(
	 @CustName NVarchar(50)
	,@CustEmail NVarchar(50)
	,@CustAddress NVarchar(256)
	,@CustContact  NVarchar(50)
)
AS
BEGIN
	---- SET NOCOUNT ON added to prevent extra result sets from
	SET NOCOUNT ON;

	---- Try Catch--
	BEGIN TRY
		BEGIN TRANSACTION

		DECLARE @CustID Bigint
			SET @CustID = isnull(((SELECT max(CustID) FROM [dbo].[tblCustomer])+1),'1')

		-- Insert statements for procedure here
		INSERT INTO [dbo].[tblCustomer] ([CustID],[CustName],[CustEmail],[CustAddress],[CustContact])
		VALUES(@CustID,@CustName,@CustEmail,@CustAddress,@CustContact)
		SELECT 1
		COMMIT TRANSACTION
	END TRY
	BEGIN CATCH
			DECLARE @ErrorMessage NVARCHAR(4000),@ErrorSeverity INT,@ErrorState INT;
			SELECT @ErrorMessage = ERROR_MESSAGE(),@ErrorSeverity = ERROR_SEVERITY(),@ErrorState = ERROR_STATE();
			RAISERROR (@ErrorMessage,@ErrorSeverity,@ErrorState);
		ROLLBACK TRANSACTION
	END CATCH

END

Stored Procedure to UPDATE Record:

-- =============================================
-- Author:		<Shashangka,,Shekhar>
-- Create date: <05/10/2015,,>
-- Description:	<With this SP we will Update Customer Record to Customer Table,,>
-- =============================================
ALTER PROCEDURE [dbo].[UPDATE_CUSTOMER]
	-- Add the parameters for the stored procedure here
	 @CustID BIGINT
	,@CustName NVarchar(50)
	,@CustEmail NVarchar(50)
	,@CustAddress NVarchar(256)
	,@CustContact  NVarchar(50)
AS
BEGIN
	---- SET NOCOUNT ON added to prevent extra result sets from
	SET NOCOUNT ON;

	---- Try Catch--
	BEGIN TRY
		BEGIN TRANSACTION

		-- Update statements for procedure here
		UPDATE [dbo].[tblCustomer]
		SET [CustName] = @CustName,
			[CustAddress] = @CustAddress,
			[CustContact] = @CustContact
		WHERE [CustID] = @CustID AND [CustEmail] = @CustEmail
		SELECT 1
		COMMIT TRANSACTION
	END TRY
	BEGIN CATCH
			DECLARE @ErrorMessage NVARCHAR(4000),@ErrorSeverity INT,@ErrorState INT;
			SELECT @ErrorMessage = ERROR_MESSAGE(),@ErrorSeverity = ERROR_SEVERITY(),@ErrorState = ERROR_STATE();
			RAISERROR (@ErrorMessage,@ErrorSeverity,@ErrorState);
		ROLLBACK TRANSACTION
	END CATCH

END

Stored Procedure to DELETE Record:

-- =============================================
-- Author:		<Shashangka,,Shekhar>
-- Create date: <05/10/2015,,>
-- Description:	<With this SP we will Delete Customer Record from Customer Table,,>
-- =============================================
ALTER PROCEDURE [dbo].[DELETE_CUSTOMER]
	-- Add the parameters for the stored procedure here
	  @CustID BIGINT
AS
BEGIN
	---- SET NOCOUNT ON added to prevent extra result sets from
	SET NOCOUNT ON;

	---- Try Catch--
	BEGIN TRY
		BEGIN TRANSACTION

		-- Delete statements for procedure here
		DELETE [dbo].[tblCustomer]
		WHERE [CustID] = @CustID 
		SELECT 1
		COMMIT TRANSACTION
	END TRY
	BEGIN CATCH
			DECLARE @ErrorMessage NVARCHAR(4000),@ErrorSeverity INT,@ErrorState INT;
			SELECT @ErrorMessage = ERROR_MESSAGE(),@ErrorSeverity = ERROR_SEVERITY(),@ErrorState = ERROR_STATE();
			RAISERROR (@ErrorMessage,@ErrorSeverity,@ErrorState);
		ROLLBACK TRANSACTION
	END CATCH

END

Stored Procedure to VIEW Single Record Details:

-- =============================================
-- Author:		<Shashangka,,Shekhar>
-- Create date: <05/10/2015,,>
-- Description:	<With this SP we will Retrive Single Customer Record from Customer Table,,>
-- =============================================
ALTER PROCEDURE [dbo].[VIEW_CUSTOMER]
	-- Add the parameters for the stored procedure here
	@CustID BIGINT
AS
BEGIN
	-- SET NOCOUNT ON added to prevent extra result sets from
	SET NOCOUNT ON;
    -- Select statements for procedure here

	SELECT * FROM [dbo].[tblCustomer]
	WHERE [CustID] = @CustID 
END

 

Let’s Start:

Open Visual Studio 2015, Click File> New > Project. In this window give a name the project and solution.

1

Click ok and another window will appear with project template, choose MVC:

2

Click ok and the visual studio will create and load a new ASP.NET application template. In this case we are using ASP.NET MVC 5. The new window will look like:

3

Our next step is to create a new model. Now right click on model folder and add new item choose data from left side menu, select ADO.NET Entity Data Model. Follow the process click next.

4

Next step is to connect to data base to generate .edmx file:

5

 

Let’s Start with View(UI):

Here are the .cshtml file of Customer CRUD operations, in the index view we have used a partial view to render the Customer list with Infinite scroll.

Index.cshtml

@{
    ViewBag.Title = "Index";
}

<h2>Index</h2>
<p>
    @Html.ActionLink("Create New", "Create")
</p>

<!-- list -->
<div id="resultCust"></div>
<div id="loader" style="text-align: center; display: none; margin-bottom: 20px;">
    <img alt="Loading" src="@Url.Content("~/Content/loader.gif")" /> Loading...
</div>
<!-- list -->

<script src="~/Scripts/jquery-1.10.2.min.js"></script>
<script type="text/javascript">

    var inProgress = false;
    $(document).ready(function () {

        //======================Default Load================//
        inProgress = true;
        $("#loader").show();
        $.get("@Url.Action("GetCustomer", "Customer")", { "RowCountPerPage": 5 },
                   function (data) {
                       $("#resultCust").append(data);
                       $("#loader").hide();
                       inProgress = false;
                   });

        //======================UL SCroll Load================//
        var page = 1;
        var _inCallback = false;

        $(window).scroll(function () {

            if ($(window).scrollTop() == $(document).height() - $(window).height()) {
                if (page > -1 && !_inCallback) {
                    _inCallback = true;
                    page++;
                    $("#loader").show();
                    $.get("@Url.Action("GetCustomer_Scroll", "Customer")", { "PageNo": page, "RowCountPerPage": 5 },
                     function (data) {
                         if (data != '') {
                             $("#resultCust").append(data);
                         }
                         else {
                             page = -1;
                         }
                         $("#loader").hide();
                         _inCallback = false;
                     });
                }
            }
        });
    });

</script>

Partial view to view Customers:

@model IEnumerable<CRUD_MVC5.Models.tblCustomer>


@foreach (var item in Model)
{
    <div>
        <strong>Name: @Html.DisplayFor(modelItem => item.CustName)</strong>
    </div>
    <div>
        Adddress: @Html.DisplayFor(modelItem => item.CustAddress)
    </div>
    <div>
        @Html.DisplayFor(modelItem => item.CustEmail)
    </div>
    <div>
        @Html.DisplayFor(modelItem => item.CustContact)
    </div>
    <div>
        @Html.ActionLink("Edit", "Edit", new { id = item.CustID }) |
        @Html.ActionLink("Delete", "Delete", new { id = item.CustID }, new { @class = "delete", @id = item.CustID })
    </div>
    <hr />
}

<script src="~/Scripts/jquery-1.10.2.min.js"></script>
<script src="~/Scripts/jquery.validate.min.js"></script>

<script type="text/javascript">
    $(document).ready(function () {

        $('a.delete').click(function (e) {
            e.preventDefault();

            var CustomerId = e.target.id;
            var flag = confirm('You are about to delete Customer ID ' + CustomerId + ' permanently.Are you sure you want to delete this record?');
            if (flag) {
                $.ajax({
                    url: '/Customer/Delete',
                    async: false,
                    type: "POST",
                    data: { id: CustomerId },
                    dataType: "json",
                    success: function (data, textStatus, jqXHR) {
                        if (data.Message == 1) {
                            //alert('Record Deleted!');
                            $("#" + CustomerId).parent().parent().remove();
                            window.location.href = '/Customer';
                        }
                        else {
                            alert('Record not Affected to DataBase!!');
                        }

                        $("#loader").hide();
                    },
                    error: function (jqXHR, textStatus, errorThrown) {
                        alert(jqXHR + "-" + textStatus + "-" + errorThrown);
                    }
                });
            }
            return false;
        });
    });
</script>   

Create.cshtml

In this view we have send a JSON object to MVC Action Method and have your Action Method return you a JSON result.

@model CRUD_MVC5.Models.tblCustomer

@{
    ViewBag.Title = "Create";
}

<h2>Create</h2>

<div id="loader" style="text-align: center; display: none; margin-bottom: 20px;">
    <img alt="Loading" src="@Url.Content("~/Content/loader.gif")" /> Loading...
</div>

@using (Html.BeginForm(null, null, FormMethod.Post, new { @id = "CustomerForm", @class = "form" }))
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>Create Customer</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })

        <div class="form-group">
            @Html.LabelFor(model => model.CustName, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.CustName, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.CustName, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.CustEmail, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.CustEmail, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.CustEmail, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.CustAddress, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.CustAddress, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.CustAddress, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.CustContact, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.CustContact, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.CustContact, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Create" class="btn btn-default" id="SubmitForm" />
            </div>
        </div>
    </div>
}

<div>
    @Html.ActionLink("Back to List", "Index")
</div>

<script src="~/Scripts/jquery-1.10.2.min.js"></script>
<script src="~/Scripts/jquery.validate.min.js"></script>

<script type="text/javascript">
    $(document).ready(function () {

        $("#SubmitForm").click(function (e) {
            e.preventDefault();
            $("#loader").show();

            var model_data = {};
            model_data.CustName = $("#CustName").val();
            model_data.CustEmail = $("#CustEmail").val();
            model_data.CustAddress = $("#CustAddress").val();
            model_data.CustContact = $("#CustContact").val();

            if (model_data.CustEmail != '') {

                $.ajax({
                    url: '/Customer/Create',
                    async: false,
                    type: "POST",
                    data: JSON.stringify(model_data),
                    dataType: "json",
                    contentType: "application/json; charset=utf-8",
                    success: function (data, textStatus, jqXHR) {
                        if (data.Message == 1) {
                            alert('Record Successfully Saved!');
                            window.location.href = '/Customer';
                        }
                        else {
                            alert('Record not Affected to DataBase!!');
                        }

                        $("#loader").hide();
                    },
                    error: function (jqXHR, textStatus, errorThrown) {
                        alert(jqXHR + "-" + textStatus + "-" + errorThrown);
                    }
                });
            }
            else {
                return;
            }
        });
    });
</script>

Edit.cshtml

In this view we have send a JSON object to MVC Action Method and have your Action Method return you a JSON result.

@model CRUD_MVC5.Models.tblCustomer

@{
    ViewBag.Title = "Edit";
}

<h2>Edit</h2>

<div id="loader" style="text-align: center; display: none; margin-bottom: 20px;">
    <img alt="Loading" src="@Url.Content("~/Content/loader.gif")" /> Loading...
</div>

@using (Html.BeginForm(null, null, FormMethod.Post, new { @id = "CustomerForm", @class = "form" }))
{
    @Html.AntiForgeryToken()
    
    <div class="form-horizontal">
        <h4>Edit Customer</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        @Html.HiddenFor(model => model.CustID)

        <div class="form-group">
            @Html.LabelFor(model => model.CustName, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.CustName, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.CustName, "", new { @class = "text-danger" })
            </div>
        </div>

        @Html.HiddenFor(model => model.CustEmail)

        <div class="form-group">
            @Html.LabelFor(model => model.CustAddress, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.CustAddress, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.CustAddress, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.CustContact, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.CustContact, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.CustContact, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Create" class="btn btn-default" id="SubmitForm" />
            </div>
        </div>
    </div>
}

<div>
    @Html.ActionLink("Back to List", "Index")
</div>


<script src="~/Scripts/jquery-1.10.2.min.js"></script>
<script src="~/Scripts/jquery.validate.min.js"></script>
<script type="text/javascript">
    $(document).ready(function () {

        $("#SubmitForm").click(function (e) {
            e.preventDefault();
            $("#loader").show();

            var model_data = {};
            model_data.CustID = $("#CustID").val();
            model_data.CustName = $("#CustName").val();
            model_data.CustEmail = $("#CustEmail").val();
            model_data.CustAddress = $("#CustAddress").val();
            model_data.CustContact = $("#CustContact").val();

            if (model_data.CustEmail != '') {

                $.ajax({
                    url: '/Customer/Edit',
                    async: false,
                    type: "POST",
                    data: JSON.stringify(model_data),
                    dataType: "json",
                    contentType: "application/json; charset=utf-8",
                    success: function (data, textStatus, jqXHR) {
                        if (data.Message == 1) {
                            alert('Record Successfully Saved!');
                            window.location.href = '/Customer';
                        }
                        else {
                            alert('Record not Affected to DataBase!!');
                        }

                        $("#loader").hide();
                    },
                    error: function (jqXHR, textStatus, errorThrown) {
                        alert(jqXHR + "-" + textStatus + "-" + errorThrown);
                    }
                });
            }
            else {
                return;
            }
        });
    });
</script>

 

Let’s Start with Coding:

In this app we are going to apply CRUD operation on a single table named Customer. To do first we need to create a Controller for the operations. To add a new Controller file we need to click right mouse an option menu will appear Click Add > Controller.

6

Let’s name it CustomerController. In the controller we will create action methods to perform CRUD operations:

Below code sample is for Customer CRUD operations:

// Customer Controller 
public class CustomerController : Controller
{
        // GET: Customer
        public ActionResult Index()
        {
            return View();
        }

        // GET: Customer
        [HttpGet]
        public ActionResult GetCustomer(int RowCountPerPage)
        {
            try
            {
                int PageNo = 0;
                int IsPaging = 0;

                CrudDataService objCrd = new CrudDataService();
                List<tblCustomer> modelCust = objCrd.GetCustomerList(PageNo, RowCountPerPage, IsPaging);
                return PartialView("_ListCustomer", modelCust);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        // GET: Customer/InfinitScroll
        [HttpGet]
        public ActionResult GetCustomer_Scroll(int PageNo, int RowCountPerPage)
        {
            try
            {
                Thread.Sleep(2000);
                int IsPaging = 1;
                CrudDataService objCrd = new CrudDataService();
                List<tblCustomer> modelCust = objCrd.GetCustomerList(PageNo, RowCountPerPage, IsPaging);
                return PartialView("_ListCustomer", modelCust);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        // GET: Customer/Create
        public ActionResult Create()
        {
            return View();
        }

        // GET: Customer/Create
        [HttpPost]
        public JsonResult Create(tblCustomer objCust)
        {
            try
            {
                CrudDataService objCrd = new CrudDataService();
                Int32 message = 0;

                if ((objCust.CustName != null) && (objCust.CustEmail != null)) message = objCrd.InsertCustomer(objCust);
                else message = -1;
                return Json(new
                {
                    Success = true,
                    Message = message
                });
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }


        // GET: Customer/Edit
        public ActionResult Edit()
        {
            return View();
        }

        // GET: Customer/Edit
        [HttpGet]
        public ActionResult Edit(long? id)
        {
            try
            {
                CrudDataService objCrd = new CrudDataService();
                tblCustomer modelCust = objCrd.GetCustomerDetails(id);
                return View(modelCust);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        // GET: Customer/Edit
        [HttpPost]
        public JsonResult Edit(tblCustomer objCust)
        {
            try
            {
                CrudDataService objCrd = new CrudDataService();
                Int32 message = 0;
                message = objCrd.UpdateCustomer(objCust);
                return Json(new
                {
                    Success = true,
                    Message = message
                });

            }
            catch (Exception ex)
            {
                throw ex;
            }
        }


        // GET: Customer/Delete
        [HttpPost]
        public JsonResult Delete(long? id)
        {
            try
            {
                CrudDataService objCrd = new CrudDataService();
                Int32 message = 0;
                message = objCrd.DeleteCustomer(id);
                return Json(new
                {
                    Success = true,
                    Message = message
                });

            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
    }

As we know earlier that we will use ADO.NET, Stored Procedure so to connect data base we need to modify our config file to add Connection String for database connection:

<connectionStrings>
    <add name="dbConn" connectionString="Data source=DESKTOP-4L9DM2J; Initial Catalog=SampleDB;  User Id=sa; Password=sa@123" providerName="System.Data.SqlClient"/>
  </connectionStrings>

Now we need to create another class to use connection string and open our database connection, let’s name it dbConnector.

// Database Connection
public class dbConnector
{
        private SqlConnection SqlConn = null;

        public SqlConnection GetConnection
        {
            get { return SqlConn; }
            set { SqlConn = value; }
        }

        public dbConnector()
        {
            string ConnectionString = ConfigurationManager.ConnectionStrings["dbConn"].ConnectionString;
            SqlConn = new SqlConnection(ConnectionString);
        }
} 

To perform CRUD operations we will create a separate class called CrudDataService. In this class we have five methods that will interact with database to perform CRUD operations.

// Database Service
public class CrudDataService
{
        public List<tblCustomer> GetCustomerList(int PageNo, int RowCountPerPage, int IsPaging)
        {
            dbConnector objConn = new dbConnector();
            SqlConnection Conn = objConn.GetConnection;
            Conn.Open();

            try
            {
                List<tblCustomer> _listCustomer = new List<tblCustomer>();

                if (Conn.State != System.Data.ConnectionState.Open)
                    Conn.Open();

                SqlCommand objCommand = new SqlCommand("READ_CUSTOMER", Conn);
                objCommand.CommandType = CommandType.StoredProcedure;
                objCommand.Parameters.AddWithValue("@PageNo", PageNo);
                objCommand.Parameters.AddWithValue("@RowCountPerPage", RowCountPerPage);
                objCommand.Parameters.AddWithValue("@IsPaging", IsPaging);
                SqlDataReader _Reader = objCommand.ExecuteReader();

                while (_Reader.Read())
                {
                    tblCustomer objCust = new tblCustomer();
                    objCust.CustID = Convert.ToInt32(_Reader["CustID"]);
                    objCust.CustName = _Reader["CustName"].ToString();
                    objCust.CustEmail = _Reader["CustEmail"].ToString();
                    objCust.CustAddress = _Reader["CustAddress"].ToString();
                    objCust.CustContact = _Reader["CustContact"].ToString();
                    _listCustomer.Add(objCust);

                }

                return _listCustomer;
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                if (Conn != null)
                {
                    if (Conn.State == ConnectionState.Open)
                    {
                        Conn.Close();
                        Conn.Dispose();
                    }
                }
            }
        }

        public tblCustomer GetCustomerDetails(long? id)
        {

            dbConnector objConn = new dbConnector();
            SqlConnection Conn = objConn.GetConnection;
            Conn.Open();

            try
            {
                tblCustomer objCust = new tblCustomer();

                if (Conn.State != System.Data.ConnectionState.Open)
                    Conn.Open();

                SqlCommand objCommand = new SqlCommand("VIEW_CUSTOMER", Conn);
                objCommand.CommandType = CommandType.StoredProcedure;
                objCommand.Parameters.AddWithValue("@CustID", id);
                SqlDataReader _Reader = objCommand.ExecuteReader();

                while (_Reader.Read())
                {
                    objCust.CustID = Convert.ToInt32(_Reader["CustID"]);
                    objCust.CustName = _Reader["CustName"].ToString();
                    objCust.CustEmail = _Reader["CustEmail"].ToString();
                    objCust.CustAddress = _Reader["CustAddress"].ToString();
                    objCust.CustContact = _Reader["CustContact"].ToString();
                }

                return objCust;
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                if (Conn != null)
                {
                    if (Conn.State == ConnectionState.Open)
                    {
                        Conn.Close();
                        Conn.Dispose();
                    }
                }
            }
        }

        public Int32 InsertCustomer(tblCustomer objCust)
        {
            dbConnector objConn = new dbConnector();
            SqlConnection Conn = objConn.GetConnection;
            Conn.Open();

            int result = 0;

            try
            {
                if (Conn.State != System.Data.ConnectionState.Open)
                    Conn.Open();

                SqlCommand objCommand = new SqlCommand("CREATE_CUSTOMER", Conn);
                objCommand.CommandType = CommandType.StoredProcedure;
                objCommand.Parameters.AddWithValue("@CustName", objCust.CustName);
                objCommand.Parameters.AddWithValue("@CustEmail", objCust.CustEmail);
                objCommand.Parameters.AddWithValue("@CustAddress", objCust.CustAddress);
                objCommand.Parameters.AddWithValue("@CustContact", objCust.CustContact);

                result = Convert.ToInt32(objCommand.ExecuteScalar());

                if (result > 0)
                {
                    return result;
                }
                else
                {
                    return 0;
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                if (Conn != null)
                {
                    if (Conn.State == ConnectionState.Open)
                    {
                        Conn.Close();
                        Conn.Dispose();
                    }
                }
            }
        }

        public Int32 UpdateCustomer(tblCustomer objCust)
        {
            dbConnector objConn = new dbConnector();
            SqlConnection Conn = objConn.GetConnection;
            Conn.Open();

            int result = 0;

            try
            {
                if (Conn.State != System.Data.ConnectionState.Open)
                    Conn.Open();

                SqlCommand objCommand = new SqlCommand("UPDATE_CUSTOMER", Conn);
                objCommand.CommandType = CommandType.StoredProcedure;
                objCommand.Parameters.AddWithValue("@CustID", objCust.CustID);
                objCommand.Parameters.AddWithValue("@CustName", objCust.CustName);
                objCommand.Parameters.AddWithValue("@CustEmail", objCust.CustEmail);
                objCommand.Parameters.AddWithValue("@CustAddress", objCust.CustAddress);
                objCommand.Parameters.AddWithValue("@CustContact", objCust.CustContact);

                result = Convert.ToInt32(objCommand.ExecuteScalar());

                if (result > 0)
                {
                    return result;
                }
                else
                {
                    return 0;
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                if (Conn != null)
                {
                    if (Conn.State == ConnectionState.Open)
                    {
                        Conn.Close();
                        Conn.Dispose();
                    }
                }
            }
        }

        public Int32 DeleteCustomer(long? id)
        {
            dbConnector objConn = new dbConnector();
            SqlConnection Conn = objConn.GetConnection;
            Conn.Open();

            int result = 0;

            try
            {
                if (Conn.State != System.Data.ConnectionState.Open)
                    Conn.Open();

                SqlCommand objCommand = new SqlCommand("DELETE_CUSTOMER", Conn);
                objCommand.CommandType = CommandType.StoredProcedure;
                objCommand.Parameters.AddWithValue("@CustID", id);
                result = Convert.ToInt32(objCommand.ExecuteScalar());

                if (result > 0)
                {
                    return result;
                }
                else
                {
                    return 0;
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                if (Conn != null)
                {
                    if (Conn.State == ConnectionState.Open)
                    {
                        Conn.Close();
                        Conn.Dispose();
                    }
                }
            }
        }
    }

Note: This is a very basic app to demonstrate the process of CRUD using MVC, who are still confused how to start, my goal was to make it simple.

Hope this will help someone 🙂 Thanks.

Download The Sample Application

Author:

Since March 2011, have 8+ years of professional experience on software development, currently working as Senior Software Engineer at s3 Innovate Pte Ltd.

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