Get value from database display in textbox

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C#

Visual-Studio

WinForms

Hi may i ask how to Get value from database display in textbox?I had a table name mttuser.When i login it will automatic show me the personal informaion.
here is my code

private void Process_Load(object sender, EventArgs e)
        {
            gent_login frm_login = new gent_login();

            using (Mttuser_DAL dalObj = new Mttuser_DAL())
            {
                if (frm_login.txt_proximity.Text != null)
                {
                    try
                    {
                        Mttuser row = new Mttuser();
                        row.us_UserID = txt_id.Text;
                        row.us_EmpName = txt_name.Text;
                        dalObj.GetRecords().Cast<Mttuser>().ToList();
                    }

                    catch (Exception es)
                    {
                        MessageBox.Show(es.Message);
                    }
                }
            }
        }

I had try it but it still no display any information that store in database.It is not using mysql or sql query because it had the connect code behind the code.