承载 DateTimePicker 控件的 DataGridColumnStyle(C#)

DataGridTimePickerColumn类代码

using System;
using System.Data;
using System.Windows.Forms;
using System.Drawing;

public class DataGridTimePickerColumn : DataGridColumnStyle 
    {
        private DateTimePicker myDateTimePicker = new DateTimePicker();
        private bool isEditing;

        public DataGridTimePickerColumn() : base() 
        {
            myDateTimePicker.Visible = false;
        }

        protected override void Abort(int rowNum)
        {
            isEditing = false;
            myDateTimePicker.ValueChanged -= new EventHandler(TimePickerValueChanged);
            Invalidate();
        }

        protected override bool Commit(CurrencyManager dataSource, int rowNum) 
        {
            myDateTimePicker.Bounds = Rectangle.Empty;
         
            myDateTimePicker.ValueChanged -= new EventHandler(TimePickerValueChanged);

            if (!isEditing)
            {
                return true;
            }

            isEditing = false;

            try 
            {
                DateTime value = myDateTimePicker.Value;
                SetColumnValueAtRow(dataSource, rowNum, value);
            } 
            catch (Exception) 
            {
                Abort(rowNum);
                return false;
            }

            Invalidate();
            return true;
        }

        protected override void Edit(
            CurrencyManager source, 
            int rowNum,
            Rectangle bounds, 
            bool readOnly,
            string instantText, 
            bool cellIsVisible) 
        {
            DateTime value = (DateTime)GetColumnValueAtRow(source, rowNum);
            if (cellIsVisible) 
            {
                myDateTimePicker.Bounds = new Rectangle(bounds.X + 2, bounds.Y + 2, 
                                                bounds.Width - 4, bounds.Height - 4);
                myDateTimePicker.Value = value;
                myDateTimePicker.Visible = true;
                myDateTimePicker.ValueChanged += new EventHandler(TimePickerValueChanged);
            } 
            else 
            {
                myDateTimePicker.Value = value;
                myDateTimePicker.Visible = false;
            }

            if (myDateTimePicker.Visible)
            {
                DataGridTableStyle.DataGrid.Invalidate(bounds);
            }
        }

        protected override Size GetPreferredSize(Graphics g, object value) 
        {
            return new Size(100, myDateTimePicker.PreferredHeight + 4);
        }

        protected override int GetMinimumHeight() 
        {
            return myDateTimePicker.PreferredHeight + 4;
        }

        protected override int GetPreferredHeight(Graphics g, object value) 
        {
            return myDateTimePicker.PreferredHeight + 4;
        }

        protected override void Paint(Graphics g, Rectangle bounds, CurrencyManager source, int rowNum) 
        {
            Paint(g, bounds, source, rowNum, false);
        }
        protected override void Paint(
            Graphics g, 
            Rectangle bounds,
            CurrencyManager source, 
            int rowNum,
            bool alignToRight) 
        {
            Paint(
                g,bounds, 
                source, 
                rowNum, 
                Brushes.Red, 
                Brushes.Blue, 
                alignToRight);
        }
        protected override void Paint(
            Graphics g, 
            Rectangle bounds,
            CurrencyManager source, 
            int rowNum,
            Brush backBrush, 
            Brush foreBrush,
            bool alignToRight) 
        {
            DateTime date = (DateTime)GetColumnValueAtRow(source, rowNum);
            Rectangle rect = bounds;
            g.FillRectangle(backBrush,rect);
            rect.Offset(0, 2);
            rect.Height -= 2;
            g.DrawString(date.ToString("d"), this.DataGridTableStyle.DataGrid.Font, foreBrush, rect);
        }

        protected override void SetDataGridInColumn(DataGrid value) 
        {
            base.SetDataGridInColumn(value);
            if (myDateTimePicker.Parent != null) 
            {
                myDateTimePicker.Parent.Controls.Remove(myDateTimePicker);
            }
            if (value != null) 
            {
                value.Controls.Add(myDateTimePicker);
            }
        }

        private void TimePickerValueChanged(object sender, EventArgs e) 
        {
            this.isEditing = true;
            base.ColumnStartedEditing(myDateTimePicker);
        }
    }

测试代码

private void Form_Load(object sender, System.EventArgs e)
        {
            InitForm( dataGrid1 );

            DataTable namesDataTable = new DataTable("NamesTable");

            namesDataTable.Columns.Add("Name",typeof(string));
            namesDataTable.Columns.Add("Date", typeof(DateTime));

            DataSet namesDataSet = new DataSet();
            namesDataSet.Tables.Add(namesDataTable);
            dataGrid1.DataSource = namesDataSet;
            dataGrid1.DataMember = "NamesTable";

            //添加样式
            AddGridStyle( dataGrid1 );
            AddData( namesDataTable );

            
        }

        private void AddGridStyle( DataGrid grid)
        {
            DataGridTableStyle myGridStyle = new DataGridTableStyle();
            myGridStyle.GridColumnStyles.Clear();
            myGridStyle.MappingName = "NamesTable";

            DataGridTextBoxColumn nameColumnStyle = new DataGridTextBoxColumn();
            nameColumnStyle.MappingName = "Name";
            nameColumnStyle.HeaderText= "Name";
            myGridStyle.GridColumnStyles.Add(nameColumnStyle);

            DataGridTimePickerColumn timePickerColumnStyle = new DataGridTimePickerColumn();
            timePickerColumnStyle.MappingName = "Date";
            timePickerColumnStyle.HeaderText = "Date";
            timePickerColumnStyle.Width = 100;
            myGridStyle.GridColumnStyles.Add(timePickerColumnStyle);

            grid.TableStyles.Add(myGridStyle);
        }

        private void AddData( DataTable namesDataTable ) 
        {
            DataRow dRow = namesDataTable.NewRow();
            dRow["Name"] = "小站";
            dRow["Date"] = new DateTime(2001, 12, 01);
            namesDataTable.Rows.Add(dRow);

            dRow = namesDataTable.NewRow();
            dRow["Name"] = "小李";
            dRow["Date"] = new DateTime(2001, 12, 04);
            namesDataTable.Rows.Add(dRow);

            dRow = namesDataTable.NewRow();
            dRow["Name"] = "小吴";
            dRow["Date"] = new DateTime(2001, 12, 29);
            namesDataTable.Rows.Add(dRow);

            namesDataTable.AcceptChanges();
        }

        private void InitForm( DataGrid grid)
        {
            grid.TabStop = true;
            grid.TabIndex = 1;
        }