In this article I will explain with an example, how to use System.Data.SqlClient package in .Net Core 6.0 (Razor Pages Web Application).
 
 
Installing System.Data.SqlClient package
By default like ASP.Net, ASP.Net MVC and .Net Core 3.0, System.Data.SqlClient package is not available in .Net Core 6.0 (Razor Pages Web Application).
Thus, in order to use System.Data.SqlClient package, you need to install the System.Data.SqlClient package from Nuget using Package Manager Console.
For more details, please refer Using System.Data.SqlClient in .Net Core 6.0.
 
 
Database
I have made use of the following table Customers with the schema as follows. CustomerId is an Auto-Increment (Identity) column.
Using ADO.Net in .Net Core 6.0
 
I have already inserted few records in the table.
Using ADO.Net in .Net Core 6.0
 
Note: You can download the database table SQL by clicking the download link below.
          Download SQL file
 
 
Namespaces
You will need to import the following namespaces.
using System.Data;
using System.Data.SqlClient;
 
 
Razor PageModel (Code-Behind)
The PageModel consists of following Handler method.
Handler method for handling GET operation
Inside this Handler method, the records are fetched from the Customers Table using ADO.Net.
The records are inserted into a public property Customers (DataSet) using SqlDataAdapter class object.
Finally, the Customers is returned to the Razor Page.
public class IndexModel : PageModel
{
    public DataSet Customers { get; set; }
 
    public void OnGet()
    {
        string constr = @"Data Source=.\SQL2019;Initial Catalog=AjaxSamples;integrated security=true";
        using (SqlConnection con = new SqlConnection(constr))
        {
            string query = "SELECT * FROM Customers";
            using (SqlCommand cmd = new SqlCommand(query, con))
            {
                using (SqlDataAdapter sda = new SqlDataAdapter(cmd))
                {
                    Customers = new DataSet();
                    sda.Fill(Customers);
                }
            }
        }
    }
}
 
 
Razor Page (HTML)
Inside the Razor Page, the System.Data namespace is inherited.
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 Customer records.
@page
@using System.Data;
@model SqlClient_Core_Razor.Pages.IndexModel
 
@{
    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>CustomerId</th>
            <th>Name</th>
            <th>Country</th>
        </tr>
        @foreach (DataRow row in Model.Customers.Tables[0].Rows)
        {
            <tr>
                <td>@row["CustomerId"]</td>
                <td>@row["Name"]</td>
                <td>@row["Country"]</td>
            </tr>
        }
    </table>
</body>
</html>
 
 
Screenshot
Using ADO.Net in .Net Core 6.0
 
 
Downloads
Download Code