Validate on a User control

[rfazendeiro]

I have a very simples user control for a user to enter a date. I know i should use the datetimepicket but i got this project where they already used this control.

 

The control has 3 dropdownlists that are day, month and year. Each of these dropdownlists theere is a default value with a string saying Day, Month and Year respectavly. and besides that, the control does not see if the motnth has 31 ou 30 days.

 

my problem is that i can only validade the date inputed pu the user after a submit and i wanna change that. I would like to be able to validate this before a submit, just like a asp.net validator does.

 

any sugestions on how to acomplish this?

 

 

P.S --> i post in attach the control code

 

 

thx to all

DateControl.zip

[jccorner]

Can you use the autopostback for the month dropdownlist and when the month is changed you rebuild the day combobox with the correct number of days??

[rfazendeiro]

I can do that but that would require that the user insert the month first.

 

What i could do is when the month is selected i check to see if the day is valid. If not i try to find the next valid day.

 

for example a user chooses 31 of febuary. In the postback i would check if it's a valida date, if not calculate the nearest valid day. In this case 28 (or 29 depending) of febuary

 

i'll give it a try

 

thx for the reply