C# Visual Studio Data Grid View returning 0 where SQL count is meant to me shown

Question

I have this SQL query which work when I run it in SQL Management Studio.

select Products.ProductName, ProductTypes.ProductType, count(SaleID) numSales
from Products
join ProductTypes on ( ProductTypes.ProductTypeID= Products.ProductTypeID)
join Sales on ( Sales.ProductID = Products.ProductID)
group by Products.ProductName, ProductTypes.ProductType

It returns this table.

Am am integrating this in with Visual Studio Data Grid View and am struggling to get the numSales column to work, right now it just shows 0 for everything like this.

Here is my code for populating the table

private void DisplayDashboard()
        {
            string numSalesQuery = "select Products.ProductName, ProductTypes.ProductType, count(SaleID) numSales " +
                "from Products join ProductTypes on (ProductTypes.ProductTypeID = Products.ProductTypeID)" +
                "join Sales on (Sales.ProductID = Products.ProductID)" +
                "group by Products.ProductName, ProductTypes.ProductType";

            List<_Dashboard> dashList = new List<_Dashboard>();
            try
            {
                // Automatically  open and close the connection
                using (var conn = ConnectionManager.DatabaseConnection())
                using (var cmd = new SqlCommand(numSalesQuery, conn))
                using (var rdr = cmd.ExecuteReader())
                {

                    while (rdr.Read())
                    {
                        //Define the list items
                        var dashboard = new _Dashboard(
                            rdr["ProductName"].ToString(),
                            rdr["ProductType"].ToString(),
                            int.Parse(rdr["numSales"].ToString()));
                        dashList.Add(dashboard);
                    }
                    dgvDashboard.DataSource = dashList;
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("Unsuccessful" + ex);
            }

        }

Thanks for any help regarding the issue.

Edit: Here is the _Dashboard Class

namespace Acme_Project.Business_Logic_Layer
{
    public class _Dashboard
    {
        //Declare properties of a Customer

        public String ProductName { get; set; }
        public string ProductType { get; set; }
        public int NumSales { get; set; }

        //Declaring Default Constructor
        public _Dashboard() { }

        //Parameterised Constructor
        public _Dashboard(string productname, string productype, int numsales)
        {
            ProductName = productname;
            ProductType = productype;
            NumSales = NumSales;
        }
    }
}

Answer 1

Set NumSales = NumSales to NumSales = numsales inside your parameterised constructor