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有时在显示日历时需要防止显示周末和周末名称在日期标题中，有没有办法使用ASP.NET 日历控件来做到这一点？

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6 回答 6

7

由于提供了控件，因此在不覆盖控件的情况下无法执行此操作。这样做的一种方法是重写OnDayRender和Render方法，以在将信息发送回客户端之前从输出中删除信息。

以下是渲染时控件外观的屏幕截图：

工作日日历示例

下面是一个基本的控件覆盖，它演示了从控件中删除周末日列。

/*------------------------------------------------------------------------------
 * 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());
            }
        }
    }
}
于 2009-02-16T18:43:30.700 回答
0

据我所知，您不能，但您可以尝试使用 WeekendDayStyle，例如使用 display:none 设置样式。或者，您可以创建从 Calendar 继承的自定义控件并覆盖 ether Render、OnDayRender 或其他内容。

于 2009-02-16T18:34:21.237 回答
0

我相信您可以处理 Day Render 事件并隐藏单元格或分配 CSS 属性以使其不可见或变灰。下面是一个简单的例子，希望对您有所帮助。

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");
}
于 2009-02-16T18:39:46.107 回答
0

如果您可以使用 jQuery 解决方案，则只需几行代码：

<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>

以下是这种方法的一些注意事项：

  • 如果 JavaScript 被禁用，客户端将看到周末。
  • 在较旧、速度较慢的浏览器中，当 jQuery 在加载时执行时，日历会发生跳跃。
  • 这个解决方案可以用:first-child直接用 CSS 实现。
  • 如果向页面添加另一个日历，则需要复制 JavaScript 的中间行。这是必要的，因为我们使用的是 :first 和 :last。
  • 如果页面上只有一个日历控件，可以通过删除 jQuery 选择器的第二个参数来简化 JavaScript 的中间行：$('#<%= Calendar1.ClientID %>')
于 2012-10-19T19:56:35.393 回答
0

正如 zacharydl 所建议的那样，我设法使用 jQuery 隐藏了周末。我对原始代码做了一些小改动。

 <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>

您必须在页面 endRequest 中注册 HideWeekEnd() 以确保在页面回发期间调用它。

于 2013-06-27T10:59:08.407 回答
0

这是另一种仅使用 CSS 来实现此目的的方法：

 <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>
于 2014-06-09T06:15:42.703 回答