DataGridView的DataTime单元格控件

喜欢ヅ旅行 2022-01-15 09:35 274阅读 0赞

[为什么80%的码农都做不了架构师？>>> ][80_]  ![hot3.png][]

没有优化，但是已经实现了，写贴上来，以后优化。

using System;
    using System.Windows.Forms;
    using System.ComponentModel;
    
    namespace ClassLibrary1
    {
        public class CalendarColumn : DataGridViewColumn
        {
            //CalendarCell calendarCell = new CalendarCell();
    
    
            //private string ctrlCustomFormat;
    
            //public string CtrlCustomFormat
            //{
            //    get { return ctrlCustomFormat; }
            //    set
            //    {
            //        ctrlCustomFormat = value;
            //        calendarCell.CtrlCustomFormat = ctrlCustomFormat;
            //    }
            //}
    
            //private DateTimePickerFormat ctrlFormat;
    
            //public DateTimePickerFormat CtrlFormat
            //{
            //    get { return ctrlFormat; }
            //    set
            //    {
            //        ctrlFormat = value;
            //        calendarCell.CtrlFormat = ctrlFormat;
            //    }
            //}
    
            //private string ctrlCellForMat;
    
            //public string CtrlCellForMat
            //{
            //    get { return ctrlCellForMat; }
            //    set
            //    {
            //        ctrlCellForMat = value;
            //        calendarCell.CtrlCellForMat = ctrlCellForMat;
            //    }
            //}
    
            public CalendarColumn()
                : base(new CalendarCell())
            {
    
            }
            public override DataGridViewCell CellTemplate
            {
                get
                {
                    return base.CellTemplate;
                }
                set
                {
                    if (value != null && !value.GetType().IsAssignableFrom(typeof(CalendarCell)))
                    {
                        throw new InvalidCastException("Must be a CalendarCell");
                    }
                    base.CellTemplate = value;
    
                }
            }
        }
    }

using System;
    using System.Windows.Forms;
    using System.ComponentModel;
    
    namespace ClassLibrary1
    {
        public class CalendarCell : DataGridViewTextBoxCell
        {
            //private string ctrlCustomFormat;
    
            //public string CtrlCustomFormat
            //{
            //    get { return ctrlCustomFormat; }
            //    set { ctrlCustomFormat = value; }
            //}
    
            //private DateTimePickerFormat ctrlFormat;
    
            //public DateTimePickerFormat CtrlFormat
            //{
            //    get { return ctrlFormat; }
            //    set { ctrlFormat = value; }
            //}
    
            //private string ctrlCellForMat;
    
            //public string CtrlCellForMat
            //{
            //    get { return ctrlCellForMat; }
            //    set { ctrlCellForMat = value; }
            //}
    
            public CalendarCell()
                : base()
            {
                this.Style.Format = "yyyy-MM-dd";
            }
            public override void InitializeEditingControl(int rowIndex, object initialFormattedValue, DataGridViewCellStyle dataGridViewCellStyle)
            {
                //将编辑控件的值设置成当前单元格的值.
                base.InitializeEditingControl(rowIndex, initialFormattedValue, dataGridViewCellStyle);
                //
                CalendarEditingControl ctl = DataGridView.EditingControl as CalendarEditingControl;
                try
                {
                    ctl.Value = Convert.ToDateTime(this.Value);
                }
                catch (Exception)
                {
                    /*当数据库中对应日期为空(比如在添加数据时)，在这里设置日期的默认值。*/
                    ctl.Value = DateTime.Now;
                }
            }
            public override Type EditType
            {
                get
                {
                    return typeof(CalendarEditingControl);
                }
            }
            public override Type ValueType
            {
                get
                {
                    return typeof(DateTime);
                }
            }
            public override object DefaultNewRowValue
            {
                get
                {
                    return DateTime.Now;
                }
            }
        }
    }

using System;
    using System.Windows.Forms;
    using System.ComponentModel;
    
    namespace ClassLibrary1
    {
        public class CalendarEditingControl : DateTimePicker, IDataGridViewEditingControl
        {
            DataGridView dataGridView;
            private bool valueChanged = false;
            int rowIndex;
            public CalendarEditingControl()
            {
                this.CustomFormat = "yyyy-MM-dd";
                this.Format = DateTimePickerFormat.Custom;
            }
            // Implements the IDataGridViewEditingControl.EditingControlFormattedValue 
            // property.
            public object EditingControlFormattedValue
            {
                get
                {
                    return this.Value.ToString("yyyy-MM-dd");
                }
                set
                {
                    if (value is String)
                    {
                        this.Value = DateTime.Parse((String)value);
                    }
                }
            }
            // Implements the 
            // IDataGridViewEditingControl.GetEditingControlFormattedValue method.
            public object GetEditingControlFormattedValue(
                DataGridViewDataErrorContexts context)
            {
                return EditingControlFormattedValue;
            }
            // Implements the 
            // IDataGridViewEditingControl.ApplyCellStyleToEditingControl method.
            public void ApplyCellStyleToEditingControl(
                DataGridViewCellStyle dataGridViewCellStyle)
            {
                this.Font = dataGridViewCellStyle.Font;
                this.CalendarForeColor = dataGridViewCellStyle.ForeColor;
                this.CalendarMonthBackground = dataGridViewCellStyle.BackColor;
            }
            // Implements the IDataGridViewEditingControl.EditingControlRowIndex 
            // property.
            public int EditingControlRowIndex
            {
                get
                {
                    return rowIndex;
                }
                set
                {
                    rowIndex = value;
                }
            }
            // Implements the IDataGridViewEditingControl.EditingControlWantsInputKey 
            // method.
            public bool EditingControlWantsInputKey(
                Keys key, bool dataGridViewWantsInputKey)
            {
                // Let the DateTimePicker handle the keys listed.
                switch (key & Keys.KeyCode)
                {
                    case Keys.Left:
                    case Keys.Up:
                    case Keys.Down:
                    case Keys.Right:
                    case Keys.Home:
                    case Keys.End:
                    case Keys.PageDown:
                    case Keys.PageUp:
                        return true;
                    default:
                        return false;
                }
            }
            // Implements the IDataGridViewEditingControl.PrepareEditingControlForEdit 
            // method.
            public void PrepareEditingControlForEdit(bool selectAll)
            {
                // No preparation needs to be done.
            }
            // Implements the IDataGridViewEditingControl
            // .RepositionEditingControlOnValueChange property.
            public bool RepositionEditingControlOnValueChange
            {
                get
                {
                    return false;
                }
            }
            // Implements the IDataGridViewEditingControl
            // .EditingControlDataGridView property.
            public DataGridView EditingControlDataGridView
            {
                get
                {
                    return dataGridView;
                }
                set
                {
                    dataGridView = value;
                }
            }
            // Implements the IDataGridViewEditingControl
            // .EditingControlValueChanged property.
            public bool EditingControlValueChanged
            {
                get
                {
                    return valueChanged;
                }
                set
                {
                    valueChanged = value;
                }
            }
            // Implements the IDataGridViewEditingControl
            // .EditingPanelCursor property.
            public Cursor EditingPanelCursor
            {
                get
                {
                    return base.Cursor;
                }
            }
            protected override void OnValueChanged(EventArgs eventargs)
            {
                // Notify the DataGridView that the contents of the cell
                // have changed.
                valueChanged = true;
                this.EditingControlDataGridView.NotifyCurrentCellDirty(true);
                base.OnValueChanged(eventargs);
            }
        }
    }

转载于:https://my.oschina.net/dongri/blog/610900

[80_]: https://my.oschina.net/u/2663968/blog/3051541
[hot3.png]: /images/20220115/91c0e9a8db6240c3b9f72595eea0c608.png