PIbd-31_Shanygin.A.V._COP_27/ComponentOrientedProgramming/CreateVisualComponent/ListOutputComponent.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;

namespace CreateVisualComponent
{
    public partial class ListOutputComponent : UserControl
    {
        public ListOutputComponent()
        {
            InitializeComponent();
        }
        public int SelectedRow
        {
            get { return dataGridViewTable.SelectedRows[0].Index; }
            set
            {
                if (dataGridViewTable.SelectedRows.Count <= value || value < 0)
                    throw new ArgumentException(string.Format("{0} is an invalid row index.", value));
                else
                {
                    dataGridViewTable.ClearSelection();
                    dataGridViewTable.Rows[value].Selected = true;
                }
            }
        }
        public void ClearDataGrid()
        {
            dataGridViewTable.DataSource = null;
            dataGridViewTable.Rows.Clear();
        }
        public void ConfigColumn(ColumnsConfiguratoin columnsData)
        {
            dataGridViewTable.ColumnCount = columnsData.ColumnsCount;
            for (int i = 0; i < columnsData.ColumnsCount; i++)
            {
                dataGridViewTable.Columns[i].Name = columnsData.ColumnName[i];
                dataGridViewTable.Columns[i].Width = columnsData.Width[i];
                dataGridViewTable.Columns[i].Visible = columnsData.Visible[i];
                dataGridViewTable.Columns[i].DataPropertyName = columnsData.PropertiesObject[i];
            }
        }
        public T GetSelectedObjectInRow<T>() where T : class, new()
        {
            T val = new();

            var propertiesObj = typeof(T).GetProperties();
            var columns = dataGridViewTable.Columns.Cast<DataGridViewColumn>().ToList();
            foreach (var property in propertiesObj)
            {
                var column = columns.FirstOrDefault(c => c.DataPropertyName == property.Name);
                if (column != null)
                {
                    object value = dataGridViewTable.SelectedRows[0].Cells[column.Index].Value;

                    Type propertyType = property.PropertyType;
                    bool isNullable = Nullable.GetUnderlyingType(propertyType) != null;

                    if (isNullable)
                    {
                        propertyType = Nullable.GetUnderlyingType(propertyType);
                    }

                    if (value != DBNull.Value)
                    {
                        property.SetValue(val, Convert.ChangeType(value, propertyType));
                    }
                    else if (isNullable)
                    {
                        property.SetValue(val, null);
                    }
                }
            }

            return val;
        }
        public void AddItem<T>(T item, int RowIndex, int ColumnIndex)
        {
            if (item == null)
                return;

            string propertyName = dataGridViewTable.Columns[ColumnIndex].DataPropertyName.ToString();
            string? value = item.GetType().GetProperty(propertyName)?.GetValue(item)?.ToString();

            if (RowIndex >= dataGridViewTable.Rows.Count)
            {
                dataGridViewTable.RowCount = RowIndex + 1;
            }

            dataGridViewTable.Rows[RowIndex].Cells[ColumnIndex].Value = value;
        }
    }
}