Dataset in c# .Net

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3.00/5 (2 votes)

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.NET2.0

what is difference between below 2 scenarios

1)Dataset ds= new Dataset();
Dataadapter.fill(ds,"emp");

2)Dataset ds;
Dataadapter.fill(ds,"emp");

in scenario 1 created dataset object with new keyword and used that that object. In scenario 2 created dataset object with out using new keyword.

Is there any difference b/w 2 scenarios.memorywise or anything......

Thanks All.

Posted 1-Mar-10 18:09pm

raghuab123

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shivam handa · Answer 1 · 2010-04-09T22:40:00

This is a common mistake done by programmers.

In the first case firstly memory is allocated for dataset. The moment you call the fill method, dataset object is given reference to a new dataset filled with data. garbage collector clears memory allocated in first line.

In second case no such memory allocation is done so can be called as efficient code.

Christian Graus · Answer 2 · 2010-03-01T18:16:00

Solution 1

Yes, of course. In the first scenario you created a dataset which was then replaced by the dataset created by the Fill method. In the real world, it's not a big deal, but it's less efficient.

Posted 1-Mar-10 18:16pm

Christian Graus

Member 6999998 · Answer 3 · 2010-03-03T01:00:00

Solution 2

there is no difference other than these two

Posted 3-Mar-10 1:00am

Member 6999998

Sandesh M Patil · Answer 4 · 2010-04-22T03:17:00

Solution 4

In the first one we r using a constructor new of dataset class in order to create a dataset but in the second on not :)

Posted 22-Apr-10 3:17am

Sandesh M Patil