GtaVUsersInfo/Forms/AddParameter.cs

using GtaVUsersInfo.Controls;
using GtaVUsersInfo.Helpers;
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;

namespace GtaVUsersInfo.Forms
{
    public partial class AddParameter : Form
    {
        List<ParameterControl> listControls;
        ParameterControl parameter;

        public AddParameter(List<ParameterControl> listControls, ParameterControl parameter)
        {
            InitializeComponent();

            this.listControls = listControls;
            this.parameter = parameter;
        }

        private void saveItem_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(nameTextBox.Text))
            {
                ErrorsShow.ShowErrorMessage($"Вы не ввели ни одни символ!");
                return;
            }

            try
            {
                Control foundParam = listControls.FirstOrDefault(p => (p as ParameterControl).ParamName == nameTextBox.Text);
                if (foundParam == null)
                {
                    parameter.ParamName = nameTextBox.Text;
                    this.Close();
                    return;
                }

                throw new Exception("Такой параметр уже есть!");
            }
            catch (Exception ex)
            {
                ErrorsShow.ShowErrorMessage($"Произошла неожиданная ошибка: {ex.Message}");
                return;
            }
        }
    }
}