In this article I will explain with an example, how to pass parameter to Stored Procedure using Dapper library in ASP.Net MVC.
Note: For beginners in ASP.Net MVC, please refer my article ASP.Net MVC Hello World Tutorial with Sample Program example.
 
 

Installing Dapper package using Nuget

In order to install Dapper library using Nuget, please refer my article Install Dapper from Nuget in Visual Studio.
 
 

Database

I have made use of the following table Customers with the schema as follows.
Pass parameter to Stored Procedure using Dapper in ASP.Net MVC
 
I have already inserted few records in the table.
Pass parameter to Stored Procedure using Dapper in ASP.Net MVC
 
Note: You can download the database table SQL by clicking the download link below.
          Download SQL file
 
 

Stored Procedure

The following Stored Procedure is used to display the records from SQL Server database.
This Stored Procedure accepts Country as a parameter, which is used to display the records from Customers Table.
CREATE PROCEDURE [Customers_GetCustomersByCountry]
      @Country VARCHAR(50)
AS
BEGIN
    SET NOCOUNT ON;
    SELECT [CustomerId]
          ,[Name]
          ,[Country]
    FROM [Customers]
    WHERE [Country] = @Country
END
 
 

Model

The Model class consists of following properties.
public class Customer
{
    public int CustomerId { get; set; }
    public string Name { get; set; }
    public string Country { get; set; }
}
 
 

Namespaces

You will need to import the following namespaces.
using Dapper;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
 
 

Controller

The Controller consists of following Action methods.

Action Method for handling GET operation

Inside this Action method, simply the View is returned.
 

Action Method for handling POST operation

Inside this Action method, the Country value is passed as a parameter and records are fetched from the Customers Table of the SQL Server database using Stored Procedure.
Then, DynamicParameter class object is created and the Country value is added as parameter.
Finally, the name of the Stored Procedure and an object of DynamicParameter class with CommandType as Stored Procedure are passed to parameter and returned to the View.
public class HomeController : Controller
{
    // GET: Home
    public ActionResult Index()
    {
        return View();
    }
 
    [HttpPost]
    public ActionResult Index(string country)
    {
        string spName = "Customers_GetCustomersByCountry";
        string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
        using (SqlConnection con = new SqlConnection(constr))
        {
            DynamicParameters dynamicParameters = new DynamicParameters();
            // Adding parameter.
            dynamicParameters.Add("@Country", country);
            return View(con.Query<Customer>(spName, dynamicParameters, commandType: CommandType.StoredProcedure));
        }
    }
}
 
 

View

HTML Markup

Inside the View, in the very first line the Customer Model is declared as Generic List collection.
The View consists of an HTML Form which has been created using the Html.BeginForm method with the following parameters.
ActionName – Name of the Action. In this case the name is Index.
ControllerName – Name of the Controller. In this case the name is Home.
FormMethod – It specifies the Form Method i.e. GET or POST. In this case it will be set to POST.
The View also consists of an HTML Table, which consists of DropDownList created using HTML.DropDownList method respectively and a Submit Button.
Then, the Generic List collection of Customer class is checked for NULL and if it is not NULL then a FOR EACH loop will be executed over the Model which will generate the HTML Table rows with the Customer records.
@using Dapper_Parameter_SP_MVC.Models
@model List<Customer>
 
@{
    Layout = null;
}
 
<!DOCTYPE html>
 
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Index</title>
</head>
<body>
    @using (Html.BeginForm("Index", "Home", FormMethod.Post))
    {
        <table cellpadding="0" cellspacing="0">
            <tr>
                <td>Country: </td>
                <td>
                    @Html.DropDownList("Country", new List<SelectListItem>
                    {
                      new SelectListItem { Text = "United States", Value = "United States" },
                      new SelectListItem { Text = "India", Value = "India" },
                      new SelectListItem { Text = "France", Value = "France" },
                      new SelectListItem { Text = "Russia", Value = "Russia" }}, "Please select")
                </td>
            </tr>
            <tr>
                <td></td>
                <td><input type="submit" value="Submit" /></td>
            </tr>
        </table>
    }
    @if (Model != null)
    {
        <hr />
        <table cellpadding="0" cellspacing="0">
            <tr>
                <th>Customer Id</th>
                <th>Name</th>
                <th>Country</th>
            </tr>
            @foreach (Customer customer in Model)
            {
                <tr>
                    <td>@customer.CustomerId</td>
                    <td>@customer.Name</td>
                    <td>@customer.Country</td>
                </tr>
            }
        </table>
    }
</body>
</html>
 
 

Screenshot

Pass parameter to Stored Procedure using Dapper in ASP.Net MVC
 
 

Downloads

Download Code