From 4f15d896ab3af600d28a6e75b0240d49d8e023f1 Mon Sep 17 00:00:00 2001 From: xue <> Date: Sun, 16 Apr 2006 03:42:50 +0000 Subject: Rewrote Hello World tutorial. --- .../protected/pages/Fundamentals/HelloWorld.page | 31 ---------------------- 1 file changed, 31 deletions(-) delete mode 100644 demos/quickstart/protected/pages/Fundamentals/HelloWorld.page (limited to 'demos/quickstart/protected/pages/Fundamentals/HelloWorld.page') diff --git a/demos/quickstart/protected/pages/Fundamentals/HelloWorld.page b/demos/quickstart/protected/pages/Fundamentals/HelloWorld.page deleted file mode 100644 index 572c6766..00000000 --- a/demos/quickstart/protected/pages/Fundamentals/HelloWorld.page +++ /dev/null @@ -1,31 +0,0 @@ - -

Sample: Hello World

-

-"Hello World" perhaps is the simplest interactive PRADO application that you can build. It displays to end-users a page with a submit button whose caption is Click Me. When the user clicks on the button, the button changes the caption to Hello World. -

-

-There are many approaches that can achieve the above goal. One can submit the page to the server, examine the POST variable, and generate a new page with the button caption updated. Or one can simply use JavaScript to update the button caption upon its onclick event. -

-

-PRADO promotes component-based and event-driven Web programming. The button is represented by a TButton object. It encapsulates the button caption as the Text property and associates the user button click action with a server-side Click event. Therefore, the "Hello World" task can be handled intuitively and easily. One simply needs to attach a function to the button's Click event. Within the function, the button's Text property is modified as "Hello World". The following diagram shows the above sequence, -

- -

-The code that a developer needs to write is merely the following event handler function, where $sender refers to the button object. - -public function buttonClicked($sender,$param) -{ - $sender->Text = "Hello World"; -} - -

-

-The following line in the page template attaches the buttonClicked() method to the OnClick event of the button, -

- -<com:TButton Text="Click Me" OnClick="buttonClicked" /> - - - - -
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