// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002782/idbconnection-ensureopen

​

// @nuget: Z.ExtensionMethods

​

using System;

using System.Data;

using System.Data.Common;

using System.Data.SqlClient;

public class Program

{

    public static void Main()

    {

        using (var conn = new SqlConnection(FiddleHelper.GetConnectionStringSqlServer()))

        {

            ConnectionState result1 = conn.State;

            //C# Extension Method: IDbConnection - EnsureOpen

            conn.EnsureOpen();

            ConnectionState result2 = conn.State;

            //C# Extension Method: IDbConnection - EnsureOpen

            conn.EnsureOpen();

            ConnectionState result3 = conn.State;

            Console.WriteLine(result1);

            Console.WriteLine(result2);

            Console.WriteLine(result3);

        }

    }

}