C#

this.dGVMemberMain_MemberList.AllowUserToAddRows = false;
           this.dGVMemberMain_MemberList.AllowUserToDeleteRows = false;
           this.dGVMemberMain_MemberList.AllowUserToResizeColumns = false;
           this.dGVMemberMain_MemberList.AllowUserToResizeRows = false;
           this.dGVMemberMain_MemberList.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
           | System.Windows.Forms.AnchorStyles.Left)
           | System.Windows.Forms.AnchorStyles.Right)));
           this.dGVMemberMain_MemberList.BackgroundColor = System.Drawing.SystemColors.Window;
           dataGridViewCellStyle1.Alignment = System.Windows.Forms.DataGridViewContentAlignment.MiddleCenter;
           dataGridViewCellStyle1.BackColor = System.Drawing.SystemColors.Control;
           dataGridViewCellStyle1.Font = new System.Drawing.Font("굴림체", 11.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(129)));
           dataGridViewCellStyle1.ForeColor = System.Drawing.Color.DarkBlue;
           dataGridViewCellStyle1.SelectionBackColor = System.Drawing.SystemColors.Highlight;
           dataGridViewCellStyle1.SelectionForeColor = System.Drawing.SystemColors.HighlightText;
           dataGridViewCellStyle1.WrapMode = System.Windows.Forms.DataGridViewTriState.True;
           this.dGVMemberMain_MemberList.ColumnHeadersDefaultCellStyle = dataGridViewCellStyle1;
           this.dGVMemberMain_MemberList.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
           dataGridViewCellStyle2.Alignment = System.Windows.Forms.DataGridViewContentAlignment.MiddleCenter;
           dataGridViewCellStyle2.BackColor = System.Drawing.SystemColors.Window;
           dataGridViewCellStyle2.Font = new System.Drawing.Font("굴림체", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(129)));
           dataGridViewCellStyle2.ForeColor = System.Drawing.SystemColors.ControlText;
           dataGridViewCellStyle2.SelectionBackColor = System.Drawing.SystemColors.Highlight;
           dataGridViewCellStyle2.SelectionForeColor = System.Drawing.SystemColors.HighlightText;
           dataGridViewCellStyle2.WrapMode = System.Windows.Forms.DataGridViewTriState.False;
           this.dGVMemberMain_MemberList.DefaultCellStyle = dataGridViewCellStyle2;
           this.dGVMemberMain_MemberList.GridColor = System.Drawing.SystemColors.ControlLight;
           this.dGVMemberMain_MemberList.Location = new System.Drawing.Point(7, 70);
           this.dGVMemberMain_MemberList.Name = "dGVMemberMain_MemberList";
           this.dGVMemberMain_MemberList.RowHeadersVisible = false;
           this.dGVMemberMain_MemberList.RowTemplate.Height = 23;
           this.dGVMemberMain_MemberList.SelectionMode = System.Windows.Forms.DataGridViewSelectionMode.FullRowSelect;
           this.dGVMemberMain_MemberList.Size = new System.Drawing.Size(758, 222);
           this.dGVMemberMain_MemberList.TabIndex = 14;

<pre lang="C#">using System;
using System.Linq;
using System.Configuration;

using System.Data.SqlClient;
using Microsoft.IdentityModel.Protocols;


namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            SqlConnection sqlConnection = new SqlConnection();
            sqlConnection.ConnectionString = ConfigurationManager.ConnectionStrings["Northwind"].ConnectionString;
            try
            {
                using (sqlConnection)
                {
                    sqlConnection.Open();
                   Console. WriteLine("State of connection {0}", sqlConnection.State.ToString());
                    Console.WriteLine("Name of Base {0}", sqlConnection.Database);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            finally
            {
                sqlConnection.Close();
            }
            
        }
    }
}

//Here is the code of configuration file which is in another file on the same project:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <connectionStrings>
        <add name="Northwind" connectionString="Data Source=.;Initial Catalog=NORTHWND;Integrated Security=SSPI"/>
        
    </connectionStrings>
    </configuration>