如何在asp.net日历控件中验证日期 [英] How to validate date in asp.net calendar control

问题描述

我想确认出生日期应该小于当前日期，入场日期应该大于当前日期。我该怎样做

解决方案

  1 ）在 aspx页面中创建隐藏字段控件  命令，以使服务器日期而不是客户机日期
 
< asp：HiddenField ID =   hdnCurrentDate runat =   server /> 
 
  2 ）将日期转换为所需格式来自代码后面的aspx.cs代码file 
 
  //  将当前日期值设置为隐藏字段 
  //  此当前日期发送给函数以检查 
  //  出生日期 
 hdnCurrentDate.Value = DateTime.Now.ToString（  dd-MM-yyyy）; 
 
 
  3 ）为所需的日期添加自定义验证器字段
 
< asp：CustomValidator ID =   custDateOfBirth runat = < span class =code-string>  server ControlToValidate =   txtBirthDate ClientValidationFunction =   CheckDate ErrorMessage =  输入小于当前日期 CssClass =   ClsRedtext SetFocusOnError =   true >  < /   asp：CustomValidator  &g t;  
  4 ）编写一个javascript函数来处理验证
 
 < script  >  
函数CheckDate（oSrc，args）
 {
  //  以下两个ID是aspx文件的查看源 
  //  相应的控件一个是输入日期，另一个是隐藏的字段日期 
  / /  （'ctl00_ContentPlaceHolder1_txtBirthDate'） 
  //  （'ctl00_ContentPlaceHolder1_hdnCurrentDate'） 
  var  dateOfBirthClientID = document.getElementById（'  ctl00_ContentPlaceHolder1_txtBirthDate'）; 
  var  systemDateClientID = document.getElementById（'  ctl00_ContentPlaceHolder1_hdnCurrentDate'）; 
 
  var  dateOfBirth = dateOfBirthClientID。 value ; 
  var  systemDate = systemDateClientID。 value ; 
 
  var  ArrDob = dateOfBirth.split（   - ）; 
 
  var  DobMonth = ArrDob [ 0 ]; 
  var  DobDate = ArrDob [ 1 ]; 
  var  DobYear = ArrDob [ 2 ]; 
 
  var  ArrSysDate = systemDate.split（   - ）; 
 
  var  SysDate = ArrSysDate [ 0 ]; 
  var  SysMonth = ArrSysDate [ 1 ]; 
  var  SysYear = ArrSysDate [ 2 ]; 
 
  //   alert（DobYear =+ DobYear +SysYear =+ SysYear + DobMonth =+ DobMonth +SysMonth =+ SysMonth +DobDate =+ DobDate +SysDate =+ SysDate）;  
 
  if （DobYear >  SysYear）
 {
 args.IsValid =  false  ; 
  return ; 
} 
 其他 如果（（DobYear == SysYear）&& （DobMonth >  SysMonth））
 {
 args.IsValid =  false ; 
  return ; 
} 
 
  else   if （（DobYear == SysYear） &&（DobMonth == SysMonth）&&（DobDate >  SysDate））
 {
 args.IsValid = 假; 
  return ; 
} 
 args.IsValid =  true ; 
} 
 < /   script  >  

参考：

Calendar.SelectedDate Property [ ^ ]

DateTime.Today Property [ ^ ]

C＃示例代码：

  if （CalendarDob .SelectedDate <  DateTime.Today）
 {
 
 
} 

I want to validate that the date of birth should be less than current date and admission date should be greater than current date.How can I do this

解决方案

1)Create a hidden field control in aspx page in order to have server date rather than client machine date

<asp:HiddenField ID="hdnCurrentDate"  runat="server" />

2)Convert the date to required format from code behind aspx.cs file

//Setting the current date value to hidden field
//This Current date is sent to a function to check the
//Date Of Birth
hdnCurrentDate.Value = DateTime.Now.ToString("dd-MM-yyyy");


3)Add a Custom validator for the required date field

<asp:CustomValidator ID="custDateOfBirth"  runat="server"   ControlToValidate="txtBirthDate" ClientValidationFunction="CheckDate" ErrorMessage="Enter less than the current date" CssClass="ClsRedtext"  SetFocusOnError="true"></asp:CustomValidator>
4)Write a javascript function to handle the validation

<script>
function CheckDate(oSrc,args)
{
//The below two ids are view source of the aspx file
//of the respective controls one is Entered date and the other is hidden field date
//('ctl00_ContentPlaceHolder1_txtBirthDate')
//('ctl00_ContentPlaceHolder1_hdnCurrentDate')
var dateOfBirthClientID =  document.getElementById('ctl00_ContentPlaceHolder1_txtBirthDate');
var systemDateClientID =  document.getElementById('ctl00_ContentPlaceHolder1_hdnCurrentDate');

       var dateOfBirth = dateOfBirthClientID.value;
       var systemDate = systemDateClientID.value;

       var ArrDob =   dateOfBirth.split("-");

       var DobMonth = ArrDob[0];
       var DobDate   = ArrDob[1];
       var DobYear   = ArrDob[2];

       var ArrSysDate =   systemDate.split("-");

       var SysDate   = ArrSysDate[0];
       var SysMonth = ArrSysDate[1];
       var SysYear   = ArrSysDate[2];

       //alert("DobYear="+DobYear+"SysYear ="+SysYear +"DobMonth="+DobMonth+"SysMonth="+SysMonth+"DobDate="+DobDate+"SysDate="+SysDate);

       if(DobYear > SysYear)
       {
               args.IsValid = false;
               return;
       }
       else if((DobYear == SysYear) && (DobMonth > SysMonth))
       {
               args.IsValid = false;
               return;
       }

        else if((DobYear == SysYear) && (DobMonth == SysMonth) && (DobDate > SysDate))
       {
               args.IsValid = false;
               return;
       }
        args.IsValid = true;
   }
</script>

refer:
Calendar.SelectedDate Property[^]
DateTime.Today Property[^]
C# sample code:

if( CalendarDob.SelectedDate < DateTime.Today)
{


}

这篇关于如何在asp.net日历控件中验证日期的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！