interview questions ? share ur ideas .

SUNIL GUTTA

12y1.4k.NET

Hi

1) I have page_load under page and other page_load in .cs file .. when i execute webform which will get executed first ?

2) How to create a xml doc from scratch ? just syntax is enough

3) view state can store what type of data ?
a) serializable data
b)only string
c) everything
d) none ...................justify

4)what is the pre-defined tracelistener class in asp.net

5)If a class using interface means
a) inherit all prop's
b)contains same methods as interface
c)create a interface object
d) All the above

6) Well when we use ajax controls on webpage after placing scriptmanagercontrol do we need to do any settings sort of things ....

7)What are user-defined functions in sqlserver ... I still doubt people who are working as dotnet developers over the years can they answer if they ask what is userdefined function like that .. i mean i guess mostly we dont use these things right ? max we use joins , SP's , triggers , some buitin functions .. This terminology stuff haunting me ..

Cheers ty

4 Replies

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Vulpes12y ago
Accepted answer
On the ScriptManager point, it sounds like the technical guy was talking about 'partial page rendering'. Now the SupportsPartialRendering and EnablePartialRendering properties both have to be set to true for this to work but those are the defaults anyway which explains why it works without changing any settings.

Sorry, you're right that ViewState will only work with data marked as serializable.

Although I realized that the data needed to be serialized to and from base64-encoded strings, my previous thinking was that if the object wasn't specifically marked as serializable its ToString() representation would be serialized instead and since the underlying StateBag can contain any kind of object, ViewState could technically do likewise.

However, as the link you found indicates, this is wrong and if you attempt to add non-serializable data to ViewState you'll get an exception.

When I first read the question about Page_Load, my initial reaction was that only one version of Page_Load would run - namely the one in the .aspx file - because this would hide the version inherited from the code behind. I built a quick ASP.NET app to test this and the results seemed to bear that out. So, if that's right, then it's a bit of a 'trick' question :)
SUNIL GUTTA12y ago
Fantastic man :) Yes that fella pointed me yes on those things i.e like you mentioned ..." talking about 'partial page rendering'. Now the SupportsPartialRendering and EnablePartialRendering properties ....."

I said i never done any setting but he argued well i too made some soft argument and said i never came to set anything like that .

.
:)Ty for help on view state & page load :) Your depth analysis really helps . . .
SUNIL GUTTA12y ago
That's so sweet :) Ty for trying .

I have doubts i feel its unfair to insist you more on where your real expertise lie ..

Anyways let me say .. . . .

Actually , i got into deep discussion with Some technical guy at some interview . He argued me with ajax thing we need to keep some setting in-order to make the control which does partial submission . . .

But i tried lot of times practically i haven't set any setting but it worked fine .. ..

3) Coming to view state .. I think , The view state must contain serializable data just because if we load a webpage from some server the webpage with different set of controls loads with view state data on our browser . But internally Serializing and de-serializing done right before it display .. some things here : http://msdn.microsoft.com/en-us/library/ms178198(v=vs.85).aspx

1) nice one :) Ty . . You mean to say Page_load in .cs under page_load Runs first or what .. ..

Thank you for you effort mate
Vulpes12y ago
As no-one else has answered, I thought I'd have a go at these:

1. I think that the only one which will run is page_load under page as it will hide the inherited member of the same name in the code behind.

2. This code creates an XmlDocument with a root node but nothing else:

using System.xml;

// ....

var doc = new XmlDocument();
XmlElement root = doc.CreateElement("root");
doc.AppendChild(root);
doc.Save("sunil.xml");

3. Technically, ViewState can contain any type of object.

4. TraceListener is the abstract base class for listeners which monitor trace and debug output:

5. A class which implements an interface must contain all its methods.

It doesn't inherit its properties as such because an interface can't itself contain any implementation. However, the class must implement the properties.

Also, you can't create an interface object. So I'd say the answer is (b).

6. Not specifically, though the ScriptManager control itself does have some properties which can be set.

7. User-defined functions are functions which you create yourself as opposed to the built-in functions of SQL Server. They take 0 or more parameters, do some processing and return either a scalar value or a table.