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Validating date in textbox in asp net

validating date in textbox in asp net-34

you can refer to these code to customize your format. So long as the text passed to the validator has characters (after trimming lead and trailing spaces), it will be evaluated either as a legal or illegal date.The format yyyy-MM-dd is always evaluated and is a special case.

However, I think your idea is better and more clear. You may appreciate my article on common questions for validation users: for the most part i'm conforming to your points (with the exception that i don't set my validationgroup property). After all, you are telling me the problem is submitting.in any case, here's my code....everything goes to validation summary. What is the code for the buttons and validationsummary?I'm using a comparevalidator where operator is set Data Type Check. yet the page will not submit because there is a validation error. If the problem is on the onchange event, are you picking the date from the autocomplete list on the textbox?Work fine but when the date entered is mm/dd/yy nothing seems to happen (no events fired, no error message, page just remains the same). thx There are two places validation occurs on client-side: when focus moves off the textbox ("onchange" event) and when you click submit. That feature only gets validated by the submit function. Do you have the validation group assigned to the button or the validator but not the other? It should be set to true if you want it to validate. In the server side code, *always* setup server side validation by testing Page.I'm using the format date/month/year (dd/MM/YY) Hi! You can pick up the value yourself on postback using this if you do want to set the field to read-only: if (Page. You should probably mark the first post to your original question as "Answer" too (if you haven't already) as he got you most of the way to the solution [:)] Here is an easier solution that most people are using.

You could try one of the following (in this order) : 1. Is Postback) I'm not sure if there are any problems with date formats with this approach though so take care. It will prevent postbacks and so it is easier on your server and faster for the user.

I'm using a popup calendar (AJAX Control Toolkit Extender) to allow a date to be picked for a Text Box. You will have to use some client side validaion technique.

Is there anyway I can either stop the user being able to change the date they enter into the textbox and force them to use the calendar? How can I validate that a valid date is in the Text Box (Incase the user manually enters or changes it). Changes to a read-only field won't get picked up on postback (it's to stop a malicious user changing a field you didn't want them to change -

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If I enter 1 January 1000 as the min or max value I get an error saying value cannot be converted to type date, but if I use another format it picks up my entered text as invalid.