In this article I will explain with an example, how to display Grand Total in Footer in ASP.Net Core (.Net Core 8) MVC.
Note: For beginners in ASP.Net Core (.Net Core 8) MVC, please refer my article ASP.Net Core 8: Hello World Tutorial with Sample Program example.
 
 

Database

Here I am making use of Microsoft’s Northwind Database. You can download it from here.
Download and install Northwind Database
 
 

Model

The Model class consists of following properties.
public class Product
{
    public int OrderID { get; set; }
    public string ProductName { get; set; }
    public decimal Price { get; set; }
}
 
 

Namespaces

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

Controller

The Controller consists of the following Action method.

Action method for handling GET operation

Inside this Action method, the records are fetched from the Orders and Product Tables using SqlDataReader and then using WHILE Loop, the records are copied into the Generic List collection of Product class objects.
Note: For more information about using SqlDataReader, please refer my article Using SqlDataReader in ASP.Net MVC.
 
Finally, the Generic List collection of Product class objects is returned to the View.
public class HomeController : Controller
{
    // GET: Home
    public IActionResult Index()
    {
        string sql = "SELECT TOP 10 OrderID,";
        sql += "(SELECT ProductName FROM Products WHERE ProductID = details.ProductId) ProductName,";
        sql += "(Quantity * UnitPrice) Price";
        sql += " FROM [Order Details] details";
        sql += " ORDER BY OrderID";
        string constr = @"Data Source= .\SQL2019;Initial Catalog= Northwind;uid=sa;pwd=pass@123";
        List<Product> products = new List<Product>();
        using (SqlConnection con = new SqlConnection(constr))
        {
            using (SqlCommand cmd = new SqlCommand(sql))
            {
                cmd.Connection = con;
                con.Open();
                using (SqlDataReader sdr = cmd.ExecuteReader())
                {
                    while (sdr.Read())
                    {
                        products.Add(new Product
                        {
                            OrderID = Convert.ToInt32(sdr["OrderID"]),
                            ProductName = sdr["ProductName"].ToString(),
                            Price = Convert.ToDecimal(sdr["Price"])
                        });
                    }
                }
                con.Close();
 
                return View(products);
            }
        }
    }
}
 
 

View

HTML Markup

Inside the View, in the very first line the Product class is declared as Model for the View.
For displaying the records, an HTML Table is used. A loop will be executed over the rows of the DataTable which will generate the HTML Table rows with the records.
Note: The Price column is formatted to display only two decimal places using the ToString(“N2”) function.
 
The last row of the HTML Table is the Footer Row, where the Grand Total i.e. the Sum of the Price of all the Products is calculated using Lambda Expression and displayed.
@using Calculate_Total_Table_Core_MVC.Model;
@model List<Product>
@{
    Layout = null;
}
 
<!DOCTYPE html>
 
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Index</title>
</head>
<body>
    <table cellpadding="0" cellspacing="0">
        <tr>
            <th>Order ID</th>
            <th>Product Name</th>
            <th>Price</th>
        </tr>
        @foreach (Product product in Model)
        {
        <tr>
            <td>@product.OrderID</td>
            <td>@product.ProductName</td>
            <td>@product.Price.ToString("N2")</td>
        </tr>
        }
        <tr>
            <td colspan="2" align="right">Total</td>
            <td>@Model.Select(p => p.Price).Sum().ToString("N2")</td>
        </tr>
    </table>
</body>
</html>
 
 

Screenshot

ASP.Net Core: Display Grand Total in Footer
 
 

Downloads

Download Code