Project/project/RedactorProfile.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace project
{
    public partial class RedactorProfile : Form
    {
        DataBase dataBase = new DataBase();
        public RedactorProfile()
        {
            InitializeComponent();
        }

        private void RedactorProfile_Load(object sender, EventArgs e)
        {
            // При загрузке формы в поля вставляются данные пользователя
            comboBox1.Text = Convert.ToString(comboBox1.Items[0]);
            textBox1.Text = Login.name;
            textBox2.Text = Login.surname;
            textBox3.Text = Login.number;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            dataBase.openConnection();
            var addQuery = $"update Employee set name = '{Convert.ToString(textBox1.Text)}', surname = '{Convert.ToString(textBox2.Text)}', number = '{Convert.ToString(textBox3.Text)}', pol = '{Convert.ToString(comboBox1.Text)}' where login = '{Login.login}'";
            var command = new SqlCommand(addQuery, dataBase.GetConnection());
            command.ExecuteNonQuery();
            dataBase.closeConnection();
            this.Hide();
            Profile profile = new Profile();
            profile.Show();
        }
    }
}