发布一个日期选择控件(ASPNET2.0)

The Coolest DHTML Calendar，这是一个在GPL下发布的JS日历程序，具有极高的可配置性，包括外观样式、显示格式、显示内容等等。默认程序是只提供日期选择的，需要设置几个showtime参数才能显示时间选择。下载的程序包(zip)里面已经有详细的说明文档和例子.
这个控件的aspnet 1.1版本的代码在我的donews blog上,代码可以自由修改发布.

using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.IO;
using System.Text;
using System.Globalization;
namespace DotnetClubPortal.WebControls
{
/// <summary>
/// An ASP.NET Server Control that wraps mishoo's javascript calendar
/// (http://www.dynarch.com/projects/calendar/).
/// </summary>
[DefaultProperty("Text"), ToolboxData("<{0}:Calendar runat=server></{0}:Calendar>")]
[ValidationProperty("Text")]
public class Calendar : CompositeControl, INamingContainer
{
private TextBox _dateTextBox;
private Image _calendarImage;
#region properties

[Bindable(true), Category("Appearance"), DefaultValue("")]
public string Text
{
get
{
EnsureChildControls();
return this._dateTextBox.Text;
}
set
{
EnsureChildControls();
this._dateTextBox.Text = value;
}
}
[Bindable(true), Category("Appearance"), DefaultValue(CalendarTheme.system)]
public CalendarTheme Theme
{
get { return (ViewState["Theme"] != null ? (CalendarTheme)ViewState["Theme"] : CalendarTheme.system); }
set { ViewState["Theme"] = value; }
}
[Bindable(true), Category("Behavior"), DefaultValue(CalendarLanguage.en)]
public CalendarLanguage Language
{
get { return (ViewState["Language"] != null ? (CalendarLanguage)ViewState["Language"] : CalendarLanguage.en); }
set { ViewState["Language"] = value; }
}
[Bindable(true), Category("Behavior"), DefaultValue("~/Support/JsCalendar")]
public string SupportDir
{
get { return (ViewState["SupportDir"] != null ? (string)ViewState["SupportDir"] : ""); }
set { ViewState["SupportDir"] = value; }
}
[Bindable(true), Category("Behavior"), DefaultValue(false)]
public bool DisplayTime
{
get { return (ViewState["DisplayTime"] != null ? (bool)ViewState["DisplayTime"] : false); }
set { ViewState["DisplayTime"] = value; }
}
[Browsable(false), Bindable(false)]
public string DateFormat
{
get { return (ViewState["DateFormat"] != null ? (string)ViewState["DateFormat"] : ""); }
set { ViewState["DateFormat"] = value; }
}
[Browsable(false), Bindable(false)]
public string TimeFormat
{
get { return (ViewState["TimeFormat"] != null ? (string)ViewState["TimeFormat"] : ""); }
set { ViewState["TimeFormat"] = value; }
}
[Bindable(true), Category("Behavior")]
public DateTime SelectedDate
{
get
{
EnsureChildControls();
if (this.Text.Length > 0)
{
try
{
return DateTime.Parse(this.Text);
}
catch (FormatException ex)
{
System.Diagnostics.Trace.WriteLine("Invalid datetime: " + this._dateTextBox.Text + " " + ex.Message, this.GetType().FullName);
return DateTime.MinValue;
}
}
else
{
return DateTime.MinValue;
}
}
set
{
EnsureChildControls();
this.Text = value.ToShortDateString();
if (this.DisplayTime)
{
this.Text += " " + value.ToShortTimeString();
}
}
}
public override ControlCollection Controls
{
get
{
EnsureChildControls();
return base.Controls;
}
}

[TypeConverter(typeof(UnitConverter))]
public override Unit Width
{
get
{
EnsureChildControls();
return base.Width;
}
set
{
EnsureChildControls();
base.Width = value;
this._dateTextBox.Width = Unit.Pixel((int)value.Value - 24);
}
}

#endregion
public event System.EventHandler DateChanged;
protected virtual void OnDateChanged(object sender)
{
if (DateChanged != null)
{
DateChanged(sender, System.EventArgs.Empty);
}
}
public Calendar()
{
// Set defaults
this.Theme = CalendarTheme.system;
this.SupportDir = "~/Support/JsCalendar";
this.DisplayTime = false;
this.DateFormat = ConvertDateFormat(CultureInfo.CurrentCulture.DateTimeFormat.ShortDatePattern);
this.TimeFormat = ConvertTimeFormat(CultureInfo.CurrentCulture.DateTimeFormat.ShortTimePattern);
SetLanguage();
}
protected override void CreateChildControls()
{
this._dateTextBox = new TextBox();
this._calendarImage = new Image();
this._dateTextBox.EnableViewState = true;
this._dateTextBox.ID = "dateTextBox";
this._dateTextBox.TextChanged += new EventHandler(DateTextBox_TextChanged);
this._calendarImage.EnableViewState = false;
this._calendarImage.ID = "trigger";
this._calendarImage.ImageUrl = GetClientFileUrl("cal.gif");
this._calendarImage.Attributes["align"] = "top";
this._calendarImage.Attributes["hspace"] = "4";
Controls.Add(this._dateTextBox);
Controls.Add(this._calendarImage);
}
/// <summary>
/// Render this control to the output parameter specified.
/// </summary>
/// <param name="output"> The HTML writer to write out to </param>
protected override void Render(HtmlTextWriter output)
{
if (this.Site != null && this.Site.DesignMode)
{
this._dateTextBox.RenderControl(output);
output.Write("[" + this.ID + "]");
}
else
{
base.Render(output);
}
}
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender (e);
string themeCss = GetClientCssImport(String.Format("calendar-{0}.css", this.Theme.ToString().Replace("_", "-")));
Page.ClientScript.RegisterClientScriptBlock(themeCss.GetType(),"calendarcss", themeCss);
string calendarScripts = "";
calendarScripts += GetClientScriptInclude("calendar.js",this.Language);
calendarScripts += GetClientScriptInclude("calendar-setup.js",this.Language);
string languageFile = String.Format("lang/calendar-{0}.js", this.Language.ToString());
calendarScripts += GetClientScriptInclude(languageFile,this.Language);
Page.ClientScript.RegisterClientScriptBlock(calendarScripts.GetType(), "calendarscripts", calendarScripts);
string setupScript = GetCalendarSetupScript(this._dateTextBox.ClientID, GetFormatString(), this.ClientID);
Page.ClientScript.RegisterStartupScript(setupScript.GetType(), this.ClientID + "script", setupScript);
}
private void SetLanguage()
{
string currentLanguage = CultureInfo.CurrentCulture.TwoLetterISOLanguageName;
try
{
CalendarLanguage cl = (CalendarLanguage)Enum.Parse(typeof(CalendarLanguage), currentLanguage);
this.Language = cl;
}
catch
{
// Default is 'en'
this.Language = CalendarLanguage.en;
}
}
private string GetClientFileUrl(string fileName)
{
return ResolveUrl(this.SupportDir + "/" + fileName);
}
private string GetClientScriptInclude(string scriptFile,CalendarLanguage language)
{
string strScript = string.Empty;
if(language == CalendarLanguage.zh)
{
strScript = "<script language=\"JavaScript\" src=\"" +
GetClientFileUrl(scriptFile) + "\" charset=\"gb2312\"></script>\n";
}
else
{
strScript = "<script language=\"JavaScript\" src=\"" +
GetClientFileUrl(scriptFile) + "\"></script>\n";
}
return strScript;
}
private string GetClientCssImport(string fileName)
{
return "<style type=\"text/css\">@import url(" + GetClientFileUrl(fileName) + ");</style>";
}
private string GetCalendarSetupScript(string inputField, string format, string trigger)
{
StringBuilder sb = new StringBuilder();
sb.Append("<script type=\"text/javascript\">Calendar.setup( { inputField : \"");
sb.Append(inputField);
sb.Append("\", ifFormat : \"");
sb.Append(format);
sb.Append("\", button : \"");
sb.Append(trigger);
sb.Append("\", showsTime : ");
sb.Append(this.DisplayTime.ToString().ToLower());
sb.Append(" } ); </script>");
return sb.ToString();
}
public string GetFormatString()
{
if (this.DisplayTime)
{
return this.DateFormat + " " + this.TimeFormat;
}
else
{
return this.DateFormat;
}
}
private void DateTextBox_TextChanged(object sender, EventArgs e)
{
OnDateChanged(sender);
}
private string ConvertDateFormat(string shortDateFormat)
{
string tempFormat = shortDateFormat.Replace("yyyy", "%Y");
tempFormat = tempFormat.Replace("M", "%m");
tempFormat = tempFormat.Replace("d", "%d");
return tempFormat;
}
private string ConvertTimeFormat(string shortTimeFormat)
{
string tempFormat = shortTimeFormat.Replace("H", "%H");
tempFormat = tempFormat.Replace("mm", "%M");
tempFormat = tempFormat.Replace("h", "%I");
tempFormat = tempFormat.Replace("tt", "%p");
return tempFormat;
}
}
public enum CalendarTheme
{
blue,
blue2,
brown,
green,
win2k_1,
win2k_2,
win2k_cold_1,
win2k_cold_2,
system
}
public enum CalendarLanguage
{
af,
br,
ca,
da,
de,
du,
el,
en,
es,
fi,
fr,
hr,
hu,
it,
jp,
ko,
lt,
nl,
no,
pl,
pt,
ro,
ru,
sl,
si,
sk,
sp,
sv,
tr,
zh
}
}

代码和示例下载地址: demo
自由、创新、研究、探索……