有时在显示日历时,需要防止周末日期和星期名称在日期标题中显示,是否可以使用 ASP.NET 日历控件 来实现此功能?
/*------------------------------------------------------------------------------
* Author - Rob (http://stackoverflow.com/users/1185/rob)
* -----------------------------------------------------------------------------
* Notes
* - This might not be the best way of doing things, so you should test it
* before using it in production code.
* - This control was inspired by Mike Ellison's article on The Code Project
* found here: http://www.codeproject.com/aspnet/MellDataCalendar.asp
* ---------------------------------------------------------------------------*/
using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text;
using System.IO;
using System.Xml;
namespace DataControls
{
/// <summary>
/// Example of a ASP.NET Calendar control that has been overriden to force
/// the weekend columns to be hidden on demand.
/// </summary>
public class DataCalendar : Calendar
{
private bool _hideWeekend;
private int _saturday;
private int _sunday;
/// <summary>Constructor</summary>
public DataCalendar()
: base()
{
// Default to showing the weekend
this._hideWeekend = false;
// Set the default values for Saturday and Sunday
this.Saturday = 6;
this.Sunday = 0;
}
/// <summary>
/// Indicate if the weekend days should be shown or not, set to true
/// if the weekend should be hidden, false otherwise. This field
/// defaults to false.
/// </summary>
public bool HideWeekend
{
get { return this._hideWeekend; }
set { this._hideWeekend = value; }
}
/// <summary>
/// Override the default index for Saturdays.
/// </summary>
/// <remarks>This option is provided for internationalization options.</remarks>
public int Saturday
{
get { return this._saturday; }
set { this._saturday = value; }
}
/// <summary>
/// Override the default index for Sundays.
/// </summary>
/// <remarks>This option is provided for internationalization options.</remarks>
public int Sunday
{
get { return this._sunday; }
set { this._sunday = value; }
}
/// <summary>
/// Render the day on the calendar with the information provided.
/// </summary>
/// <param name="cell">The cell in the table.</param>
/// <param name="day">The calendar day information</param>
protected override void OnDayRender(TableCell cell, CalendarDay day)
{
// If this is a weekend day and they should be hidden, remove
// them from the output
if (day.IsWeekend && this._hideWeekend)
{
day = null;
cell.Visible = false;
cell.Text = string.Empty;
}
// Call the base render method too
base.OnDayRender(cell, day);
}
/// <summary>
/// Render the calendar to the HTML stream provided.
/// </summary>
/// <param name="html">The output control stream to write to.</param>
protected override void Render(HtmlTextWriter html)
{
// Setup a new HtmlTextWriter that the base class will use to render
StringBuilder sb = new StringBuilder();
StringWriter sw = new StringWriter(sb);
HtmlTextWriter calendar = new HtmlTextWriter(sw);
// Call the base Calendar's Render method allowing OnDayRender()
// to be executed.
base.Render(calendar);
// Check to see if we need to remove the weekends from the header,
// if we do, then remove the fields and use the new verison for
// the output. Otherwise, just use what was previously generated.
if (this._hideWeekend && this.ShowDayHeader)
{
// Load the XHTML to a XML document for processing
XmlDocument xml = new XmlDocument();
xml.Load(new StringReader(sw.ToString()));
// The Calendar control renders as a table, so navigate to the
// second TR which has the day headers.
XmlElement root = xml.DocumentElement;
XmlNode oldNode = root.SelectNodes("/table/tr")[1];
XmlNode sundayNode = oldNode.ChildNodes[this.Sunday];
XmlNode saturdayNode = oldNode.ChildNodes[this.Saturday];
XmlNode newNode = oldNode;
newNode.RemoveChild(sundayNode);
newNode.RemoveChild(saturdayNode);
root.ReplaceChild(oldNode, newNode);
// Replace the buffer
html.WriteLine(root.OuterXml);
}
else
{
html.WriteLine(sw.ToString());
}
}
}
}
正如zacharydl所建议的那样,我使用jQuery成功地隐藏了周末。我对原始代码进行了一些小改动。
<script type="text/javascript">
HideWeekEnd();
function HideWeekEnd ()
{
$('._title').parent().attr('colspan', '7');
$('._dayheader:nth-last-child(1) , ._dayheader:nth-last-child(2) ', $('#<%= Calendar1.ClientID %>')).hide(); // remove last two cells from day header row
$('._weekendday').hide(); // remove all the cells marked weekends
}
Sys.Application.add_init(appl_init);
function appl_init() {
var pgRegMgr = Sys.WebForms.PageRequestManager.getInstance();
pgRegMgr.add_endRequest(HideWeekEnd);
}
</script>
您需要在页面的endRequest事件中注册HideWeekEnd(),以确保在页面回传期间调用它。
我相信你可以处理Day Render事件并隐藏单元格或分配CSS属性使其不可见或变灰。以下是一个简单的例子,希望这可以帮到你。
protected void Calendar_DayRender(object sender, DayRenderEventArgs e)
{
e.Cell.Visible = False;
// or
// e.Cell.Attributes.Add("class", "Invisible");
// or
// e.Cell.Attributes.Add("style", "display: none");
}
这里有另一种只使用 CSS 实现的方法:
<style>
.hidden,
#Calendrier tr > th[abbr=Saturday],
#Calendrier tr > th[abbr=Sunday] { display:none; }
#Calendrier tr > th { text-align: center; }
</style>
<asp:Calendar ID="Calendar1" DayNameFormat="Full" runat="server"
WeekendDayStyle-CssClass="hidden" ClientIDMode="Static" >
</asp:Calendar>
<script type="text/javascript">
$(document).ready(function () {
$('._title').parent().attr('colspan', '5'); // title row initially has a colspan of seven
$('._dayheader:first, ._dayheader:last', $('#<%= Calendar1.ClientID %>')).hide(); // remove first and last cells from day header row
$('._weekendday').hide(); // remove all the cells marked weekends
});
</script>
<asp:Calendar runat="server" ID="Calendar1">
<TitleStyle CssClass="_title" />
<DayHeaderStyle CssClass="_dayheader" />
<WeekendDayStyle CssClass="_weekendday" />
</asp:Calendar>
以下是对此方法的一些考虑:
$('#<%= Calendar1.ClientID %>')
XmlNode sundayNode = oldNode.ChildNodes[0];
为:XmlNode sundayNode = oldNode.ChildNodes[5];
可能是因为我在英国? - Brian