Post back

[Manan]

hello all,

I have a simple question. on my .aspx page I have bunch of
textbox, and dropdowns. One of the dropdown2 has postback
= true. When the user selects an item, the brower will
post back to the server. My problem is I only wants the
browser will post back to the server if (textbox1,
textbox2, and dropdown1) are not null values. I have a
javascript that checks for the null value for textbox1,
textbox2, and dropdown1. how can i do in client-side,
postback occurs only if certain fields are not blank.
Please let me know if u have any suggestion or any
examples that help..



Thanks
manan

 

[Swanand Mokashi]

use validation controls and set the CausesValidation to true for the
control that has AutoPostBack.
Validate in the validation control what you want to be not null.