using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.Drawing;
namespace AquaCalendar
{
[DefaultProperty("Text"), //在属性工具箱中显示的默认属性
ToolboxData("<{0}:DatePicker runat=server>")]
public class DatePicker : System.Web.UI.WebControls.WebControl , IPostBackEventHandler
{
//选择日期按钮的默认样式
private const string _BUTTONDEFAULTSTYLE = "BORDER-RIGHT: gray 1px solid; BORDER-TOP: gray 1px solid; BORDER-LEFT: gray 1px solid; CURSOR: hand; BORDER-BOTTOM: gray 1px solid;";
//按钮默认文本
private const string _BUTTONDEFAULTTEXT = "...";
private System.Web.UI.WebControls.Calendar _Calendar;
public override ControlCollection Controls
{
get
{
EnsureChildControls(); //确认子控件集都已被创建
return base.Controls;
}
}
//创建子控件（服务器日历控件）
protected override void CreateChildControls()
{
Controls.Clear();
_Calendar = new Calendar();
_Calendar.ID = MyCalendarID;
_Calendar.SelectedDate = DateTime.Parse(Text);
_Calendar.TitleFormat = TitleFormat.MonthYear;
_Calendar.NextPrevFormat = NextPrevFormat.ShortMonth;
_Calendar.CellSpacing = 0;
_Calendar.Font.Size = FontUnit.Parse("9pt");
_Calendar.Font.Name = "Verdana";
_Calendar.SelectedDayStyle.BackColor = ColorTranslator.FromHtml("#333399");
_Calendar.SelectedDayStyle.ForeColor = ColorTranslator.FromHtml("White");
_Calendar.DayStyle.BackColor = ColorTranslator.FromHtml("#CCCCCC");
_Calendar.TodayDayStyle.BackColor = ColorTranslator.FromHtml("#999999");
_Calendar.TodayDayStyle.ForeColor = ColorTranslator.FromHtml("Aqua");
_Calendar.DayHeaderStyle.Font.Size = FontUnit.Parse("8pt");
_Calendar.DayHeaderStyle.Font.Bold = true;
_Calendar.DayHeaderStyle.Height = Unit.Parse("8pt");
_Calendar.DayHeaderStyle.ForeColor = ColorTranslator.FromHtml("#333333");
_Calendar.NextPrevStyle.Font.Size = FontUnit.Parse("8pt");
_Calendar.NextPrevStyle.Font.Bold = true;
_Calendar.NextPrevStyle.ForeColor = ColorTranslator.FromHtml("White");
_Calendar.TitleStyle.Font.Size = FontUnit.Parse("12pt");
_Calendar.TitleStyle.Font.Bold = true;
_Calendar.TitleStyle.Height = Unit.Parse("12pt");
_Calendar.TitleStyle.ForeColor = ColorTranslator.FromHtml("White");
_Calendar.TitleStyle.BackColor = ColorTranslator.FromHtml("#333399");
_Calendar.OtherMonthDayStyle.ForeColor = ColorTranslator.FromHtml("#999999");
_Calendar.NextPrevFormat = NextPrevFormat.CustomText;
_Calendar.NextMonthText = "下月";
_Calendar.PrevMonthText = "上月";
_Calendar.Style.Add("display","none"); //默认不显示下拉日历控件
_Calendar.SelectionChanged += new EventHandler(_Calendar_SelectionChanged);
this.Controls.Add(_Calendar);
}
[
Category("Appearance"), //该属性所属类别，参见图
DefaultValue(""), //属性默认值
Description("设置该日期控件的值。") //属性的描述
]
public string Text
{
get
{
EnsureChildControls();
return (ViewState["Text"] == null)?System.DateTime.Today.ToString("yyyy-MM-dd"):ViewState["Text"].ToString();
}
set
{
EnsureChildControls();
DateTime dt = System.DateTime.Today;
try
{
dt = DateTime.Parse(value);
}
catch
{
throw new ArgumentOutOfRangeException("请输入日期型字符串（例如：1981-04-29）！");
}
ViewState["Text"] = DateFormat == CalendarEnum.LongDateTime?dt.ToString("yyyy-MM-dd"):dt.ToString("yyyy-M-d");
}
}
//重载服务器控件的Enabled属性，将选择日期按钮变灰（禁用）
public override bool Enabled
{
get
{
EnsureChildControls();
return ViewState["Enabled"] == null?true:(bool)ViewState["Enabled"];
}
set
{
EnsureChildControls();
ViewState["Enabled"] = value;
}
}
public string ButtonStyle
{
get
{
EnsureChildControls();
object o = ViewState["ButtonSytle"];
return (o == null)?_BUTTONDEFAULTSTYLE:o.ToString();
}
set
{
EnsureChildControls();
ViewState["ButtonSytle"] = value;
}
}
[
DefaultValue(CalendarEnum.LongDateTime),
]
public CalendarEnum DateFormat
{
get
{
EnsureChildControls();
object format = ViewState["DateFormat"];
return format == null?CalendarEnum.LongDateTime:(CalendarEnum)format;
}
set
{
EnsureChildControls();
ViewState["DateFormat"] = value;
DateTime dt = DateTime.Parse(Text);
Text=DateFormat == CalendarEnum.LongDateTime?dt.ToString("yyyy-MM-dd"):dt.ToString("yyyy-M-d");
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public string MyCalendarID //复合控件ID
{
get
{
EnsureChildControls();
return this.ClientID+"_MyCalendar";
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public string MyCalendarName //复合控件名称
{
get
{
EnsureChildControls();
return this.UniqueID+":MyCalendar";
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
