Add project files.

EmployeeLibrary/Data/SqlDataAccess.cs

@@ -0,0 +1,31 @@
+using Dapper;
+using Microsoft.Extensions.Configuration;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Data.SqlClient;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace EmployeeLibrary.Data;
+
+public class SqlDataAccess : ISqlDataAccess
+{
+    private readonly IConfiguration _config;
+
+    public SqlDataAccess(IConfiguration config)
+    {
+        _config = config;
+    }
+
+    public async Task<List<T>> LoadDataAsync<T, U>(string sql,
+                                            U parameters,
+                                            string connectionStringName = "Default")
+    {
+
+        using IDbConnection connection = new SqlConnection(_config.GetConnectionString(connectionStringName));
+        var rows = await connection.QueryAsync<T>(sql, parameters, commandType: CommandType.StoredProcedure);
+        return rows.ToList();
+    }
+}