Need help in parameter

India Programmer

Hi all, Pls somebody explain me with simple example what does the ref, out and params keyword do in c sharp?? And what does actually do postback and autopostaback method in asp.net with an example??? And if (!IsPostBack) what does it mean???? Pls somebody clear my above query... Thanks, Sumit

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Bhushan Sahni17y ago
Autopostback is a property of the ASP controls. if this property of the control is set to true it will render the page to the server and the page will perform a load event. At this point the code written in the PageLoad event will execute again and again, so if we want to avoid the some/whol PageLoad event code to be executed everytime, we wrtie it in the if condition. Eg. if (!page.ispostback) { . . . . . }
Danatas Gervi17y ago
about "params" -

this is the "sintax sugar" - example:
if you needs to send in function parameters the varios number of objects
you must write
void myFunction(object [] manyValues) { // code } { object [] mVal = new object[] {firstVal, secondVal, val45,mess23}; myFunction (mVal); }
but, if you will use "params" keyword in
void myFunction(params object [] manyValues) { // code } { // you can call the function more simple myFunction (firstVal, secondVal, val45,mess23); )
The array will be created by compiler automatically.

* note - params argument must be last parameter in function.