29WxOrder/29WxOrder/MyControl/MyDataGridView.cs

using DevComponents.DotNetBar.Controls;
using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Design;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using static System.Windows.Forms.ComboBox;

namespace _29WxOrder.MyControl
{
    public class MyDataGridView : DataGridViewX
    {
        public ToolTip toolTip = new ToolTip();

        private bool isCustomSort = false;
        [Browsable(true), Description("是否自定义排序"), Category("自定义分组")]
        public bool IsCustomSort
        {
            get { return isCustomSort; }
            set
            {
                isCustomSort = value;
                foreach (DataGridViewColumn colunm in this.Columns)
                {
                    if (isCustomSort)
                        colunm.SortMode = DataGridViewColumnSortMode.NotSortable;
                    else
                        colunm.SortMode = DataGridViewColumnSortMode.Automatic;
                }
            }
        }

        private static ComboBox cBox = new ComboBox();
        [Browsable(true),
            Description("要自定义排序的列"),
            Category("自定义分组"),
            DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
            Localizable(true),
            Editor("System.Windows.Forms.Design.ListControlStringCollectionEditor, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(UITypeEditor)),
            MergableProperty(false)]
        public ObjectCollection CustomSortColumns { get; set; } = new ObjectCollection(new ComboBox());

        public delegate void CustomSortEvent(object sender, string sortName, string sortType = "desc");
        public event CustomSortEvent CustomSorted;

        public MyDataGridView()
        {
            this.RowPostPaint += new System.Windows.Forms.DataGridViewRowPostPaintEventHandler(this.dgv_RowPostPaint); // 重绘
            this.ShowCellToolTips = false;

            toolTip.Draw += toolTip1_Draw;

            this.AlternatingRowsDefaultCellStyle.BackColor = Color.FromArgb(244, 244, 244);//隔行变色
            this.ColumnHeaderMouseClick += MyDataGridView_ColumnHeaderMouseClick;
        }

        private void toolTip1_Draw(object sender, DrawToolTipEventArgs e)
        {
            e.Graphics.FillRectangle(Brushes.AliceBlue, e.Bounds);
            e.Graphics.DrawRectangle(Pens.Chocolate, new Rectangle(0, 0, e.Bounds.Width - 1, e.Bounds.Height - 1));
            e.Graphics.DrawString(toolTip.ToolTipTitle + e.ToolTipText, e.Font, Brushes.Red, e.Bounds);
        }

        // 重绘
        private void dgv_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
        {
            Rectangle rectangle = new Rectangle(e.RowBounds.Location.X, e.RowBounds.Location.Y, this.RowHeadersWidth - 4, e.RowBounds.Height);
            TextRenderer.DrawText(e.Graphics, (e.RowIndex + 1).ToString(), this.RowHeadersDefaultCellStyle.Font, rectangle,
                this.RowHeadersDefaultCellStyle.ForeColor, TextFormatFlags.VerticalCenter | TextFormatFlags.Right);
        }

        DataGridViewColumn colSort = null;
        Label lblSort = null;
        private void MyDataGridView_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
        {
            if (!this.isCustomSort)
                return;

            if (e.ColumnIndex < 0)
                return;

            if (CustomSortColumns.Count > 0 && !CustomSortColumns.Cast<object>().Select(l => l.ToString()).Contains(this.Columns[e.ColumnIndex].Name))
                return;

            if (lblSort == null)
            {
                lblSort = new Label() { ForeColor = Color.White, BackColor = Color.Transparent, AutoSize = true, };
                this.Controls.Add(lblSort);

                this.ColumnWidthChanged += (s, e1) => onColResize();
                this.ColumnHeadersHeightChanged += (s, e1) => onColResize();
                this.Scroll += (s, e1) => onColResize();
                this.Resize += (s, e1) => onColResize();
                this.Sorted += (s, e1) => onColResize();
                this.RowHeadersWidthChanged += (s, e1) => onColResize();
                this.ColumnStateChanged += (s, e1) => onColResize();
            }

            if (colSort != null && colSort != this.Columns[e.ColumnIndex])
            {
                lblSort.Text = "";
                colSort = this.Columns[e.ColumnIndex];
            }
            colSort = this.Columns[e.ColumnIndex];

            if (lblSort.Text == "▲")
            {
                lblSort.Text = "";
                colSort = null;
            }
            else if (lblSort.Text == "▼")
            {
                lblSort.Text = "▲";
            }
            else
            {
                lblSort.Text = "▼";
            }

            CustomSorted?.Invoke(this, colSort?.Name, lblSort.Text == "▲" ? "asc" : lblSort.Text == "▼" ? "desc" : null);
            onColResize();
        }

        void onColResize()
        {
            if (colSort == null)
                return;

            int colLeft = (this.RowHeadersVisible ? this.RowHeadersWidth : 0) - (colSort.Frozen ? 0 : this.HorizontalScrollingOffset);
            foreach (DataGridViewColumn col in this.Columns)
            {
                if (col.DisplayIndex >= colSort.DisplayIndex) break;
                if (!col.Visible) continue;
                colLeft += col.Width;
            }

            var newPoint = new Point(colLeft + 1, (this.ColumnHeadersHeight + 1) / 2 - lblSort.Height / 2);
            newPoint.X += colSort.Width - lblSort.Width - 2;
            var minLeft = colLeft;
            var maxLeft = colLeft + colSort.Width - lblSort.Width;

            if (newPoint.X < minLeft) newPoint.X = minLeft;
            if (newPoint.X > maxLeft) newPoint.X = maxLeft;

            lblSort.Location = newPoint;
        }

        #region 鼠标浮动
        protected override void OnCellMouseMove(DataGridViewCellMouseEventArgs e)
        {
            base.OnCellMouseMove(e);

            if (e.RowIndex >= 0)
            {
                this.Rows[e.RowIndex].DefaultCellStyle.BackColor = Color.SkyBlue;
            }
        }

        protected override void OnCellMouseLeave(DataGridViewCellEventArgs e)
        {
            base.OnCellMouseLeave(e);

            if (e.RowIndex != -1)
            {
                if (e.RowIndex % 2 == 0)
                {
                    this.Rows[e.RowIndex].DefaultCellStyle.BackColor = Color.White;
                }
                else
                {
                    this.Rows[e.RowIndex].DefaultCellStyle.BackColor = Color.FromArgb(244, 244, 244);
                }
            }
        }
        #endregion
    }
}