我正在尝试找到一种方法来禁用Calendar
控件中的“上个月”链接。这似乎应该是一个非常简单的任务,但我在文档中找不到任何属性或方法来执行此操作。
请注意,我正在寻找一种方法来禁用仅上一个月链接,而不是两个链接。仅禁用“下个月”链接应该是相同的解决方案,因此也可以接受。还请注意ShowNextPrevMonth
属性是一个不可行的解决方案,因为它用于隐藏,这是可以接受但不太理想的,并隐藏两个链接,而不是只隐藏一个。
.NET Calendar Control Documentation
谢谢你的帮助!快乐的编码!
旁注:我不是在寻找JavaScript解决方案,因为我可以简单地设计一个。但是,如果有人确实知道如何在每个链接上应用不同的CssClass
,我会向该投票推荐。
答案 0 :(得分:0)
<%@ Page Title="Home Page" Language="C#" AutoEventWireup="true"
CodeFile="Default.aspx.cs" Inherits="_Default" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>ASP.NET Prevent Previous Month Selection - Demo</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Calendar ID="someCalendar" runat="server"
OnVisibleMonthChanged="theVisibleMonthChanged" />
</div>
</form>
</body>
</html>
And the C# code for my demo is:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
/// <summary>
/// Demo to show how one might prevent the user from selecting
/// the previous month in ASP.NET
///
/// References:
/// [1] - http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.calendar.visiblemonthchanged.aspx
/// [2] - http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx
/// </summary>
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
// How to attach visibleMonthChanged event is explained in [1]
someCalendar.VisibleMonthChanged +=
new MonthChangedEventHandler(this.theVisibleMonthChanged);
}
protected void theVisibleMonthChanged(Object sender, MonthChangedEventArgs e)
{
DateTime currentDate = DateTime.Now;
DateTime dateOfMonthToDisable = currentDate.AddMonths(-1);
if (e.NewDate.Month == dateOfMonthToDisable.Month)
{
someCalendar.VisibleDate = e.PreviousDate;
// Custom date formats are explained in [2]
Page.ClientScript.RegisterClientScriptBlock(
this.GetType(),
"someScriptKey",
"<script>" +
"alert(\"Can not go before today's month of " +
currentDate.ToString("MMM-yyyy") +
".\");" +
"</script>"
);
}
}
}