Sunday 20 October 2013

MVC4 Razor:How to call Stored Procedure using C#

Hi friends,in this article I will explain about How to call Stored Procedure in MVC4 Razor.
I already explained in the previous articles about MVC4 Razor:How to retrieve view values on POST method in Controller using FormCollection,Mvc 4 Razor CRUD Operation using C# and How to create a dropdown list field for MVC4 Razor view?
Open SQL Server and write the below stored procedure and Execute.
Stored Procedure:
CREATE PROCEDURE AddStudent
                @firstname varchar(20),
                @lastname varchar(20),
                @address varchar(100),
                @retval int output
AS
BEGIN
                SET NOCOUNT ON;
                IF NOT EXISTS(SELECT * FROM student_data WHERE firstname =@firstname and lastname=@lastname )
                BEGIN
    INSERT INTO student_data (FIRSTNAME ,LASTNAME ,ADDRESS ) VALUES (@firstname ,@lastname ,@address )
    SET @retval=1
                END
                ELSE
                BEGIN
                SET @retval =0
                END     
END
GO


Open Visual Studio and take one Model Class Account.cs and write the following code.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;

namespace MvcCRUD.Models
{
    public class Account
    {
        public string firstName { get; set; }
        public string lastname { get; set; }
        public string address { get; set; }
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["con"].ConnectionString);
        public int Register()
        {
            SqlCommand cmd = new SqlCommand("AddStudent", con);
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.Parameters.AddWithValue("@firstname", firstName);
            cmd.Parameters.AddWithValue("@lastname", lastname);
            cmd.Parameters.AddWithValue("@address", address);
            SqlParameter ret = new SqlParameter("@retval", SqlDbType.Int);
            ret.Direction =ParameterDirection .Output;
            cmd.Parameters.Add(ret);
            con.Open();
            int retval = Convert.ToInt32(cmd.ExecuteNonQuery());
            con.Close();
            return retval;
        }
    }
}

Take one Controller AccountController.cs and call the Stored procedure in Controller as shown below.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using MvcCRUD.Models;

namespace MvcCRUD.Controllers
{
    public class AccountController : Controller
    {    
        public ActionResult Register()
        {
            return View();
        }
        [HttpPost]
        public ActionResult Register(FormCollection frm)
        {
            Account obj = new Account();
            obj.firstName = frm[0].ToString();
            obj.lastname = frm[1].ToString();
            obj.address = frm[2].ToString();
            int retval = Convert.ToInt32 (obj.Register());
            if (retval == 1)
            {
                return View("~/Home/index");
            }
            else
            {
                return View("Register");
            }
        }
    }
}

Right click on the Register() function in the AccountController.cs  and create one view as Register.cshtml and it will create the view as shown below.
@model MvcCRUD.Models.Account

@{
    ViewBag.Title = "Register";
}

<h2>Register</h2>

@using (Html.BeginForm()) {
    @Html.ValidationSummary(true)

    <fieldset>
        <legend>Account</legend>

        <div class="editor-label">
            @Html.LabelFor(model => model.firstName)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.firstName)
            @Html.ValidationMessageFor(model => model.firstName)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.lastname)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.lastname)
            @Html.ValidationMessageFor(model => model.lastname)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.address)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.address)
            @Html.ValidationMessageFor(model => model.address)
        </div>

        <p>
            <input type="submit" value="Create" />
        </p>
    </fieldset>
}

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

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

And run the application,the output as shown in the below figure when you click on create button It will automatically save the record.
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5 comments:

  1. hi, please help me with this question related to the above scenario.
    i have a controller that should check for controllername adn windows login name, if both satisfies a condition then user is redirected to a particular action on the same controller.

    The condition above spoken is acheived by a public class file in a businesslayer.
    please see the code and tell em what could be wrong:
    Controller:
    public ActionResult Index()
    {
    FileUploadCheckPoint checkpointsdata = new FileUploadCheckPoint();

    checkpointsdata.CDSID = System.Environment.UserName;
    checkpointsdata.ControllerName = System.Web.HttpContext.Current.Request.RequestContext.RouteData.Values["controller"].ToString();
    int retval = Convert.ToInt32(checkpointsdata.CheckAccess());
    //checkpointsdata.username= "someuser1";
    //checkpointsdata.ControllerName = "CorporateHRBenefitsDocumentsAdmin";
    //var retval = checkpointsdata.CheckAccess();
    ViewBag.Message = retval;
    if (retval == 1)
    {
    return View("Upload");
    }
    else if (retval == 0)
    {
    TempData["notice"] = "You do not have permissions to upload files, please contact the admin for more information.";
    return View("Index");
    }
    else
    {
    TempData["notice"] = "No valid permissions to acces the page.";
    return View("Index");
    }

    }
    ==================
    fileuploadcheckpoint.cs:
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Configuration;
    using System.Data;
    using System.Data.SqlClient;

    namespace solutionname.Models
    {
    public class FileUploadCheckPoint
    {
    public string ControllerName { get; set; }
    public string CDSID { get; set; }
    SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["DBCS"].ConnectionString);
    public int CheckAccess()
    {
    FileUploadCheckPoint fileuploadcheckpointdata = new FileUploadCheckPoint();
    SqlCommand cmd = new SqlCommand("spGetStatusforUserRoleControllersAccess", con);
    cmd.CommandType = CommandType.StoredProcedure;

    cmd.Parameters.AddWithValue("@username", username);
    cmd.Parameters.AddWithValue("@ControllerName", ControllerName);

    SqlParameter ret = new SqlParameter("@retval", SqlDbType.Int);
    ret.Size = 50;
    ret.Direction =ParameterDirection.Output;
    cmd.Parameters.Add(ret);
    con.Open();
    int retval = Convert.ToInt32(cmd.ExecuteNonQuery());
    con.Close();
    return retval;

    }


    }
    }
    =============
    index.cshtml
    @model solutionname.Models.FileUploadCheckPoint

    just has viewbag.message
    ===========sql stored procedure==========
    ALTER PROCEDURE [dbo].[spGetStatusforUserRoleControllersAccess]
    (@ControllerName nvarchar(50), @username nvarchar(50), @retval int OUTPUT)
    AS
    Begin
    --SET NOCOUNT ON;
    IF(SELECT urc.IsActive
    FROM [TDMIntranet_DEV].[dbo].[tbl_UserRoleControllers] urc,
    dbo.tbl_Users tu,
    dbo.tbl_Roles tr,
    dbo.tbl_Controllers tc
    where urc.userid=tu.userid
    and urc.roleid=tr.roleid
    and urc.ControllerID=tc.ControllerID
    and tu.username= @username
    and tc.ControllerName = @ControllerName) ='Y'
    Set @retval = 1
    Else
    set @retval = 0

    End

    ==========

    and thanks for so many articles that are really useful for beginners like me.

    Appreciate all your efforts and help.

    ReplyDelete
  2. Finally, I found the fix for my problem above posted:
    In the fileuploadcheckpoint.cs in the Models folder:
    Block of code that needs a change:
    con.Open();
    //earlier below line was :int retval = Convert.ToInt32(cmd.ExecuteNonQuery()); and instead it should be like below
    Int16 retval = Convert.ToInt16(cmd.Parameters["@retval"].Value);
    con.Close();

    ------------Thanks a lot to the admin of the blog, this article is really helpful to people like me and many others.

    Appreciate all your efforts!

    ReplyDelete
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    ReplyDelete

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