получить данные через такие параметры, как:
string str = "insert into CustomerHistoryDD(logo,ceoPicture,ceoProfilePicture,coverPhoto,employee1,employee2,employee3,employee4) values(@param1,@param2,@param3,@param4,@param5,@param6,@param7,@param8)";
SqlCommand cmd = new SqlCommand(str, con);
con.Open();
cmd.Parameters.AddWithValue("@param1", link);
cmd.Parameters.AddWithValue("@param2", link1);
cmd.Parameters.AddWithValue("@param3", link2);
cmd.Parameters.AddWithValue("@param4", link3);
cmd.Parameters.AddWithValue("@param5", tb_Emp1.Text);
cmd.Parameters.AddWithValue("@param6", tb_Emp2.Text);
cmd.Parameters.AddWithValue("@param7", tb_Emp3.Text);
cmd.Parameters.AddWithValue("@param8", tb_Emp4.Text);
cmd.ExecuteNonQuery();
con.Close();
lbl_msg.Text = "Data Saved Successfully";