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What is the optimal amount of data for DataSet.

Posted on 2004-09-11
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Last Modified: 2010-04-15
Hi
 I have a question, I’m doing some database application and I have to retrieve significant amount of rows from database in one time let say 2000 rows. Would it kill performance of my application?  I mean computer memory for instance.

How many rows can I store in DataSet without making user life miserable.

Anyone has an idea how efficient is dataSet in C#.


Thanks.
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Question by:knobloch
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4 Comments
 
LVL 15

Expert Comment

by:Timbo87
ID: 12035510
If you need to edit the data, a DataSet or DataTable is definitely the way to go. If you're only reading the data or databinding, use a DataReader, which is more efficient but not directly editable.

Here's an articles on the pros and cons of a DataSet vs. DataReader:
http://msdn.microsoft.com/msdnmag/issues/04/06/DataPoints/default.aspx
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Accepted Solution

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Desp earned 350 total points
ID: 12037639
Just an addition to what timbo has said that you can also use dataset for reading when the number of records are small , for large number of rows DataReader always gives best performance ..  DataReader are more faster than datasets.. the only drawback i found using datareader is that they dont have any property which return the number of records.  on the other hand you can also use the datareader + Stored procedures to update/delete from the DB
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LVL 19

Expert Comment

by:Desp
ID: 12037756
here are some differnces
Dataset
-Need to disconnect/distribute data
-Need support for modifying/updating data
-Need data schema support

Datareader
-Fast read-only access
-When you want to use the data for something other than a dataset

Source:
http://donxml.com/allthingstechie/archive/2004/06/25/862.aspx
Info:
DataSet - 411 ( 18.6% slower than the DataReader)
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LVL 10

Assisted Solution

by:ptmcomp
ptmcomp earned 150 total points
ID: 12039750
If you have large amount of data you have two possibilities:
- load only small amounts of data in a DataSet (untyped datasets are a bit faster)
- don't use DataSets
The DataSets are not made for large amount of data. To point you in the right direction we should know a bit more of the application you are going to build. I prefer using my own data objects when using them in business logic. Custom serialization can speed up serialization and deserialization.
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