Regular expression or Jquery to validate a ASP.NET textbox for valid date and in the past

Question

I am trying to validate a text field for valid date (MM/DD/YYYY) I have not done this validation before and wondering if it is easy to achieve through regular expression validator or through Jquery?

Example would be greatly appreciated.

Joe Alfano · Accepted Answer · 2012-01-13 16:57:16Z

1

The easiest way in ASP.Net to validate an input text box to insure that is has a valid date is to use an ASP.Net CompareValidator. Set the Operator to "DateTypeCheck" and the Type to "Date", and the form submission will only go thru if the input text box contains a valid date.

<asp:TextBox ID="tbInput" runat="server" />
<asp:CompareValidator ID="cmpTest" EnableClientScript="true" ControlToValidate="tbInput" 
Type="Date" Operator="DataTypeCheck" runat="server"/>

See here for more details: http://msdn.microsoft.com/en-us/library/ad548tzy(v=vs.71).aspx

To insure that the date is in the past, use a ASP.Net Range validator, and programmatically set the MaximumValue and MinimumValue attributes to the max and min date your want:

<asp:RangeValidator ID="cmpTest2" ControlToValidate="tbInput" Type="Date" runat="server" ErrorMessage="Date must be in past" />

protected void Page_Init(object sender, EventArgs e)
{
    cmpTest2.MaximumValue = DateTime.Now.Date.ToString("MM-dd-yyyy");
    cmpTest2.MinimumValue = DateTime.Now.AddYears(-100).ToString("MM-dd-yyyy");
}

edited Jan 13, 2012 at 16:57

answered Jan 13, 2012 at 16:40

Joe Alfano

10.3k6 gold badges31 silver badges40 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

kalls Over a year ago

Thanks Joe! How can I ensure that it is valid date in the past and not in future.

Joe Alfano Over a year ago

You can use a RangeValidator. See the edits to my post above.

Collectives™ on Stack Overflow

Regular expression or Jquery to validate a ASP.NET textbox for valid date and in the past

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related