在文章 自定义日历控件环境VS2019+NET4.6.1 基础上迭代,纯代码方式实现
DateTimePicker.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace CustomControls.DateTimePicker
{
public class DateTimePicker : UserControl
{
TextBox[] lst;
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), EditorBrowsable(EditorBrowsableState.Never), Browsable(false)]
public int Year
{
set { lst[0].Text = value.ToString("d4"); }
}
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), EditorBrowsable(EditorBrowsableState.Never), Browsable(false)]
public int Month
{
set
{
if (value < 1 || value > 12) { throw new ArgumentOutOfRangeException("月份范围是1至12."); }
lst[1].Text = value.ToString("d2");
}
}
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), EditorBrowsable(EditorBrowsableState.Never), Browsable(false)]
public int Day
{
set
{
DateTime dt = new DateTime(lst[0].Text.ToInt(1), lst[1].Text.ToInt(1), 1, 0, 0, 0);
dt = dt.AddMonths(1).AddSeconds(-10);
if (value < 1 || value > dt.Day) { throw new ArgumentOutOfRangeException("当前月份日期范围是1至" + dt.Day + "."); }
lst[2].Text = value.ToString("d2");
}
}
int _Radius = 1;
public int Radius
{
get { return _Radius; }
set
{
if (value < 1) { throw new ArgumentOutOfRangeException(); }
_Radius = value;
this.Invalidate();
}
}
DateTime _value = DateTime.Now;
public DateTime Value
{
get
{
_value = new DateTime(lst[0].Text.ToInt(2020), lst[1].Text.ToInt(1), lst[2].Text.ToInt(1), lst[3].Text.ToInt(1), lst[4].Text.ToInt(1), lst[5].Text.ToInt(1));
return _value;
}
set
{
Year = value.Year;
Month = value.Month;
Day = value.Day;
lst[3].Text = value.Hour.ToString("00");
lst[4].Text = value.Minute.ToString("00");
lst[5].Text = value.Second.ToString("00");
_value = value;
}
}
public DateTimePicker()
{
lst = new TextBox[6];
for (int i = 0; i < 6; i++)
{
lst[i] = new TextBox() { Name = "txt" + i, BorderStyle = BorderStyle.None, Margin = new Padding(0), ReadOnly = true, TextAlign = HorizontalAlignment.Center };
if (i < 3) { lst[i].MouseDown += txtYear_MouseDown; }
lst[i].GotFocus += Text_GotFocus;
lst[i].Click += Text_GotFocus;
lst[i].KeyDown += Text_KeyDown;
}
this.Controls.AddRange(lst);
Value = DateTime.Now;
BackColor = MonthCalendarBackColor = Color.White;
}
Color _backColor = Color.White, _monthCalendarBackColor = Color.White;
public override Color BackColor
{
get => _backColor;
set
{
_backColor = base.BackColor = value;
foreach (TextBox text in lst)
{
text.BackColor = BackColor;
}
}
}
public Color MonthCalendarBackColor { get => _monthCalendarBackColor; set => _monthCalendarBackColor = value; }
private void Text_KeyDown(object sender, KeyEventArgs e)
{
if (!(sender is TextBox _TextBox)) { return; }
e.SuppressKeyPress = false;
string _txt = _TextBox.Text;
if (e.KeyCode >= Keys.D0 && e.KeyCode <= Keys.D9)
{
}
else if (e.KeyCode >= Keys.NumPad0 && e.KeyCode <= Keys.NumPad9)
{
}
else if ((Keys)e.KeyValue == Keys.Delete)
{
if (_TextBox.SelectionLength > 0)
{
_txt = _TextBox.Text.Substring(0, _TextBox.SelectionStart) + _TextBox.Text.Substring(_TextBox.SelectionStart + _TextBox.SelectionLength);
}
else if (_TextBox.SelectionStart >= 0)
{
int _index = _TextBox.Text.Length - _TextBox.SelectionStart - 1;
if (_index >= 0)
{
_txt = _txt.Substring(0, _TextBox.SelectionStart) + _txt.Substring(_TextBox.SelectionStart + 1, _index);
}
}
_TextBox.Text = _txt;
_TextBox.SelectionStart = _txt.Length;
return;
}
else if ((Keys)e.KeyValue == Keys.Back)
{
if (_TextBox.SelectionLength > 0)
{
_txt = _TextBox.Text.Substring(0, _TextBox.SelectionStart) + _TextBox.Text.Substring(_TextBox.SelectionStart + _TextBox.SelectionLength);
}
else if (_TextBox.SelectionStart >= 0)
{
int _index = _TextBox.SelectionStart - 1;
_index = _index < 0 ? 0 : _index;
_txt = _txt.Substring(0, _index) + _txt.Substring(_TextBox.SelectionStart);
}
_TextBox.Text = _txt;
_TextBox.SelectionStart = _txt.Length;
return;
}
else
{
return;
}
if (_TextBox.SelectionLength > 0)
{
_txt = _txt.Substring(0, _TextBox.SelectionStart) + KeyName(e.KeyCode) + _txt.Substring(_TextBox.SelectionStart + _TextBox.SelectedText.Length);
}
else
{
if (_TextBox.SelectionStart >= 0)
{
_txt = _txt.Substring(0, _TextBox.SelectionStart) + KeyName(e.KeyCode) + _txt.Substring(_TextBox.SelectionStart);
}
else
{
_txt = _txt.Substring(0, _TextBox.SelectionStart) + KeyName(e.KeyCode);
}
}
if (e.KeyCode != Keys.Delete && e.KeyCode != Keys.Back)
{
switch (_TextBox.Name.Replace("txt", ""))
{
case "0":
if (_txt.ToInt(0) < 1 || _txt.ToInt(0) > 9999) { return; }
break;
case "1":
if (_txt.ToInt(0) < 1 || _txt.ToInt(0) > 12) { return; }
break;
case "2":
DateTime dt = new DateTime(lst[0].Text.ToInt(1), lst[1].Text.ToInt(1), 1, 0, 0, 0);
dt = dt.AddMonths(1).AddSeconds(-10);
if (_txt.ToInt(0) < 1 || _txt.ToInt(0) > dt.Day) { return; }
break;
case "3":
if (_txt.ToInt(0) < 1 || _txt.ToInt(0) > 23) { return; }
break;
case "4":
case "5":
if (_txt.ToInt(0) < 1 || _txt.ToInt(0) > 59) { return; }
break;
default:
break;
}
}
_TextBox.Text = _txt;
_TextBox.SelectionStart = _txt.Length;
}
char KeyName(Keys keycode)
{
if (keycode >= Keys.NumPad0 && keycode <= Keys.NumPad9)
{
char cc;
switch (keycode)
{
case Keys.NumPad0:
case Keys.D0:
cc = '0';
break;
case Keys.NumPad1:
case Keys.D1:
cc = '1';
break;
case Keys.NumPad2:
case Keys.D2:
cc = '2';
break;
case Keys.NumPad3:
case Keys.D3:
cc = '3';
break;
case Keys.NumPad4:
case Keys.D4:
cc = '4';
break;
case Keys.NumPad5:
case Keys.D5:
cc = '5';
break;
case Keys.NumPad6:
case Keys.D6:
cc = '6';
break;
case Keys.NumPad7:
case Keys.D7:
cc = '7';
break;
case Keys.NumPad8:
case Keys.D8:
cc = '8';
break;
case Keys.NumPad9:
case Keys.D9:
cc = '9';
break;
default: cc = ' '; break;
}
return cc;
}
else
{
return (char)keycode;
}
}
protected override void OnFontChanged(EventArgs e)
{
base.OnFontChanged(e);
foreach (Control item in this.Controls)
{
item.Font = this.Font;
}
}
private void Text_GotFocus(object sender, EventArgs e)
{
if (sender is TextBox _txt)
{
_txt.SelectAll();
}
}
/// <summary>选择面板是否已经打开</summary>
bool _dropDownShow = false;
MonthCalendar _skinMonthCalendar;
ToolStripDropDown _dropDown;
private void txtYear_MouseDown(object sender, MouseEventArgs e)
{
if (!_dropDownShow)
{
_dropDownShow = true;
_skinMonthCalendar = new MonthCalendar(this);
_dropDown = new ToolStripDropDown() { Padding = Padding.Empty, Margin = Padding.Empty };
_dropDown.Items.Add(new ToolStripControlHost(_skinMonthCalendar) { AutoSize = false, Padding = Padding.Empty, Margin = Padding.Empty });
_dropDown.Show(this, new Point(0, this.Height));
_dropDown.Closed += (s1, e1) => { _dropDownShow = false; };
}
else
{
_dropDownShow = false;
DropDownClose();
}
}
public void DropDownClose()
{
if (_dropDown != null) { if (!_dropDown.IsDisposed) { _dropDown.Close(); } }
_skinMonthCalendar = null;
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
base.OnPaintBackground(e);
e.Graphics.SmoothingMode = SmoothingMode.HighQuality;
e.Graphics.CompositingQuality = CompositingQuality.HighQuality;
e.Graphics.InterpolationMode = InterpolationMode.HighQualityBilinear;
#region 根据内容和字体计算控件大小和位置
this.Height = lst[0].ClientSize.Height * 2;
int _locationY = (this.Height - lst[0].Height) / 2;
_locationY = _locationY > 0 ? _locationY : 0;
int widthHangxian = (int)e.Graphics.MeasureString("-", Font).Width;
int widthMaohao = (int)e.Graphics.MeasureString(":", Font).Width;
lst[0].Size = lst[0].PreferredSize;
lst[1].Size = lst[1].PreferredSize;
lst[2].Size = lst[2].PreferredSize;
lst[3].Size = lst[3].PreferredSize;
lst[4].Size = lst[4].PreferredSize;
lst[5].Size = lst[5].PreferredSize;
lst[0].Location = new Point(10, _locationY);
lst[1].Location = new Point(lst[0].Right + widthHangxian, _locationY);
lst[2].Location = new Point(lst[1].Right + widthHangxian, _locationY);
lst[3].Location = new Point(lst[2].Right + 10, _locationY);
lst[4].Location = new Point(lst[3].Right + widthMaohao, _locationY);
lst[5].Location = new Point(lst[4].Right + widthMaohao, _locationY);
this.Width = lst[5].Right + 10;
#endregion
Rectangle rect = new Rectangle(0, 0, this.Width, this.Height);
var path = GetRoundedRectPath(rect, _Radius);
this.Region = new Region(path);
try
{
Graphics _Graphics = e.Graphics;
{
using (SolidBrush b = new SolidBrush(BackColor))
{
_Graphics.FillPath(b, path);
}
SolidBrush _brush = new SolidBrush(lst[0].ForeColor);
int _widthLeft = 0;
//年和月之间的-
_Graphics.DrawString("-", Font, _brush, new PointF(_widthLeft + lst[0].Bounds.Right, _locationY));
_Graphics.DrawString("-", Font, _brush, new PointF(_widthLeft + lst[1].Bounds.Right, _locationY));
//小时和分钟之间的:
_Graphics.DrawString(":", Font, _brush, new PointF(_widthLeft + lst[3].Bounds.Right, _locationY));
_Graphics.DrawString(":", Font, _brush, new PointF(_widthLeft + lst[4].Bounds.Right, _locationY));
}
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
}
GraphicsPath GetRoundedRectPath(Rectangle rect, int radius)
{
if (radius <= 0) { radius = 1; }
int diameter = radius;
Rectangle arcRect = new Rectangle(rect.Location, new Size(diameter, diameter));
GraphicsPath path = new GraphicsPath();
path.AddArc(arcRect, 180, 90);
arcRect.X = rect.Right - diameter;
path.AddArc(arcRect, 270, 90);
arcRect.Y = rect.Bottom - diameter;
path.AddArc(arcRect, 0, 90);
arcRect.X = rect.Left;
path.AddArc(arcRect, 90, 90);
path.CloseFigure();
return path;
}
}
}
MonthCalendar.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Windows.Forms;
using System.IO;
using System.ComponentModel;
namespace CustomControls.DateTimePicker
{
[ToolboxItem(false)]
public class MonthCalendar : UserControl
{
readonly string[] Weekday = new string[] { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
DateTime CurrentDate;
DateTimePicker dateTimePicker;
Label labPrevYear;
Label labPrevMonth;
Label labNextMonth;
Label labNextYear;
Label labCurrentDate;
Label labSelectedDate;
string prevYear = "iVBORw0KGgoAAAANSUhEUgAAAAwAAAAKCAYAAACALL/6AAAABGdBTUEAALGPC/xhBQAAAF9JREFUKFNjQAe2UVHutuHhr4C0GVQIqxgYDBLF9pGRvrYREQ8co6KMoUJYxeDAPjraFGSSQ2SkB1QIqxgKoK8mu4iI1yAPQ4WwiqEAh6goA7vw8EuOkZH2UCEksUh7AHi0U/vJvVWtAAAAAElFTkSuQmCC",
prevMonth = "iVBORw0KGgoAAAANSUhEUgAAAAYAAAALCAYAAABcUvyWAAAABGdBTUEAALGPC/xhBQAAAF1JREFUKFNjQAe2UVFmdhERJVAuBIAEbcPDXzmFhytDhRCCQNodKoRD0DkyUhxDEARsIyLu2EdGZkG5CGAfEWEL0uEQGekBFUIA++hoU/IlgZ57jeEQEAC7MiIiAwAzQymHZBUrOQAAAABJRU5ErkJggg==",
nextMonth = "iVBORw0KGgoAAAANSUhEUgAAAAYAAAAKCAYAAACXDi8zAAAABGdBTUEAALGPC/xhBQAAAEdJREFUGFdjsIuI2ADE6xwaGlgYkAFIgAaSoatWMduGhy+3jYhYBhWCAN+0NC6gxBG78PAZUCGKBUEAKLge6JK5UC4UMDAAALD7LxOFqPajAAAAAElFTkSuQmCC",
nextYear = "iVBORw0KGgoAAAANSUhEUgAAAAwAAAALCAYAAABLcGxfAAAABGdBTUEAALGPC/xhBQAAAI5JREFUKFNjsI2MDLYPD89MS0tjZYACbGIowDYiYpZdePhBt9hYbqgQVjEUAFYQEXHINy2NCyqEVQwFAJ0xG2QqsgJsYigArCAi4jSGJjQxOAAJ2oaH/3OOjBSHCmEVAwOQBMh6kIlQIaxiYECS4tDCQk50CWxicAD0UDe6BDYxOABKToYy4QCbGAMDAwMAcAFVx/DrCbkAAAAASUVORK5CYII=";
private MonthCalendar()
{
labPrevYear = new Label() { Image = ConvertBase64ToImage(prevYear), Location = new Point(5, 5), Size = new Size(13, 13) };
labPrevMonth = new Label() { Image = ConvertBase64ToImage(prevMonth), Location = new Point(23, 5), Size = new Size(13, 13) };
labNextMonth = new Label() { Image = ConvertBase64ToImage(nextMonth), Location = new Point(144, 5), Size = new Size(13, 13) };
labNextYear = new Label() { Image = ConvertBase64ToImage(nextYear), Location = new Point(162, 5), Size = new Size(13, 13) };
labCurrentDate = new Label() { Location = new Point(41, 5), Size = new Size(98, 13), TextAlign = ContentAlignment.MiddleCenter };
labSelectedDate = new Label() { Location = new Point(0, 162), Size = new Size(180, 18), TextAlign = ContentAlignment.MiddleCenter };
this.Controls.Add(labPrevYear);
this.Controls.Add(labPrevMonth);
this.Controls.Add(labNextMonth);
this.Controls.Add(labNextYear);
foreach (Control item in this.Controls)
{
if (item is Label)
{
item.Click += (sender, e) =>
{
if (sender == labPrevYear) { CurrentDate = CurrentDate.AddYears(-1); }
else if (sender == labPrevMonth) { CurrentDate = CurrentDate.AddMonths(-1); }
else if (sender == labNextMonth) { CurrentDate = CurrentDate.AddMonths(+1); }
else if (sender == labNextYear) { CurrentDate = CurrentDate.AddYears(+1); }
ShowDate(CurrentDate.Year, CurrentDate.Month);
};
item.MouseEnter += (sender, e) =>
{
((Label)sender).BackColor = Color.FromArgb(247, 248, 249);
};
item.MouseLeave += (sender, e) =>
{
((Label)sender).BackColor = Color.Transparent;
};
}
}
this.Controls.Add(labCurrentDate);
this.Controls.Add(labSelectedDate);
this.Size = new Size(180, 180);
}
public MonthCalendar(DateTimePicker dateTimePicker) : this()
{
this.dateTimePicker = dateTimePicker;
this.Font = dateTimePicker.Font;
this.CurrentDate = dateTimePicker.Value;
this.BackColor = dateTimePicker.MonthCalendarBackColor;
DateInit();
ShowDate(CurrentDate.Year, CurrentDate.Month);
labSelectedDate.Text = Weekday[(int)DateTime.Today.DayOfWeek] + " , " + DateTime.Today.Year + "/" + DateTime.Today.Month + "/" + DateTime.Today.Day;
}
Image ConvertBase64ToImage(string base64String)
{
byte[] imageBytes = Convert.FromBase64String(base64String);
using (MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length))
{
ms.Write(imageBytes, 0, imageBytes.Length);
return Image.FromStream(ms, true);
}
}
private void DateInit()
{
#region 星期
//周标题数组
Label[] WeekScheme = new Label[7];
for (int i = 0; i <= 6; i++)
{
WeekScheme[i] = new Label()
{
Text = Weekday[i].Substring(1),
Width = 20,
Height = 16,
Font = this.Font,
Location = new Point(3 + i * 25, 25),
ForeColor = Color.FromArgb(85, 85, 85)
};
}
WeekScheme[0].ForeColor = WeekScheme[6].ForeColor = Color.FromArgb(255, 128, 128);
#endregion
this.Controls.AddRange(WeekScheme);
int DateNum = 0;
Label[] DateDay = new Label[42];
for (int i = 0; i < 6; i++)
{
int y = 47 + i * 18;
for (int j = 0; j < 7; j++)
{
DateDay[DateNum] = new Label
{
Name = "AutoLabDateDay" + DateNum.ToString(),
Width = 23,
Height = 14,
Font = this.Font,
Location = new Point(1 + j * 25, y),
TextAlign = ContentAlignment.MiddleRight
};
DateNum++;
}
}
this.Controls.AddRange(DateDay);
}
private void ShowDate(int year, int month)
{
labCurrentDate.Text = year + "年" + month + "月";
// 1 2 3 4 5 6 7 8 9 10 11 12
int[] DataDayLen = new int[] { 31, 30, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
DataDayLen[1] = ((year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0)) ? 29 : 28;
DateTime MyDate = DateTime.Parse(year + "-" + month + "-" + 1);
DateTime Today = DateTime.Today;
int Day = (int)MyDate.DayOfWeek;
for (int L = 0; L < 42; L++)
{
Label labDateDay = (Label)this.Controls["AutoLabDateDay" + L];
labDateDay.Text = "";
labDateDay.BackColor = Color.Transparent;
//前一个月
if (Day != 0 && L < Day)
{
labDateDay.Text = (DataDayLen[MyDate.AddMonths(-1).Month - 1] - Day + L + 1).ToString();
labDateDay.ForeColor = Color.DarkGray;
labDateDay.Tag = DateTime.Parse(MyDate.AddMonths(-1).Year + "-" + MyDate.AddMonths(-1).Month + "-" + (DataDayLen[MyDate.AddMonths(-1).Month - 1] - Day + L + 1).ToString());
}
//当前月
else if (L >= Day && L < DataDayLen[MyDate.Month - 1] + Day)
{
labDateDay.Text = (L - Day + 1).ToString();
labDateDay.ForeColor = Color.FromArgb(85, 85, 85);
int day = Convert.ToInt32(labDateDay.Text);
labDateDay.Tag = DateTime.Parse(MyDate.Year + "-" + MyDate.Month + "-" + labDateDay.Text);
}
//下一个月
else if (L >= DataDayLen[MyDate.Month - 1] + Day)
{
labDateDay.Text = (L - DataDayLen[MyDate.Month - 1] - Day + 1).ToString();
labDateDay.ForeColor = Color.DarkGray;
labDateDay.Tag = DateTime.Parse(MyDate.AddMonths(+1).Year + "-" + MyDate.AddMonths(+1).Month + "-" + (L - DataDayLen[MyDate.Month - 1] - Day + 1).ToString());
}
labDateDay.MouseLeave += (sender, e) =>
{
Label CuLabel = (Label)sender;
CuLabel.BackColor = Color.Transparent;
};
labDateDay.MouseClick += (sender, e) =>
{
Label label = (Label)sender;
if (dateTimePicker != null)
{
DateTime time = Convert.ToDateTime(label.Tag);
dateTimePicker.Year = time.Year;
dateTimePicker.Month = time.Month;
dateTimePicker.Day = time.Day;
dateTimePicker.DropDownClose();
}
};
labDateDay.MouseEnter += (sender, e) =>
{
Label label = (Label)sender;
label.BackColor = Color.FromArgb(247, 248, 249);
if (label.Tag != null)
{
DateTime time = Convert.ToDateTime(label.Tag);
labSelectedDate.Text = Weekday[(int)time.DayOfWeek] + " , " + time.Year + "-" + time.Month + "-" + time.Day;
}
else
{
labSelectedDate.Text = Weekday[(int)DateTime.Today.DayOfWeek] + " , " + DateTime.Today.Year + "-" + DateTime.Today.Month + "-" + DateTime.Today.Day;
}
};
}
}
}
}
