验证asp.net中的datetime字段

Question

I have three AJAX calendar controls (start date, end date and effective date) for in my project. Which selects date in the format dd/MM/yyyy hh:mm:ss tt. I want to add a following client side validations :

1. end date should be greater than or equal to start date.
2. effective date should be greater than end date.

I have tried using CompareValidator but it did not help as it do not allow me to compare time.

Is there any workaround to achieve this validation on client side.

Answer 1

You can do it like this using jquery

//First check that textboxes are not empty
if($('input[id$=txtEndDate]').val()=="")
{
//Enter end date
return;
}
var endDate=new Date($('input[id$=txtEndDate]').val());
var startDate=new Date($('input[id$=txtStartDate]').val());
var effctDate=new Date($('input[id$=txtEffectiveDate]').val());

if(endDate>=startDate)
{
 //your code
}
else
{

}
if(effctDate>endDate)
{
 //your code
}
else
{

}

Using Javascript

//First check that textboxes are not empty
if(document.getElementById("txtEndDate").value=="")
{
//Enter end date
return;
}
var endDate=new Date(document.getElementById("txtEndDate").value);
var startDate=new Date(document.getElementById("txtStartDate").value);
var effctDate=new Date(document.getElementById("txtEffectiveDate").value);

if(endDate>=startDate)
{
 //your code
}
else
{

}
if(effctDate>endDate)
{
 //your code
}
else
{

}