getting value of client side into server side
I am writing a webpart and I have the following problem.
I have a textbox declared in C# called Days.
I am using the HtmlTextWriter to write this textbox to the webpart and i am using a function CheckDays in javascript to check the data on the clientside.
output.AddAttribute(HtmlTextWriterAttribute.Name,"Days");
output.AddAttribute("OnChange","CheckDays(this)");
I also have a button declared called Submit.
when the button is clicked I use an eventhandler called SubmitButtonClicked
SubmitButton.Click += new EventHandler(SubmitButtonClicked);
In this event i want to get the value of the textbox Days on the client side.
Days.Text does not work, how do I get cle client side value?