Dataset Vs Datareader Which One to Use Where

An example might be using a reader to populate a dropdownbox and a dataset for a grid of data. Since a DataSet is serializable it can serve.

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DataAdapter is an intermediate layer middleware which acts a bridge between the DataSet and a Database whereas DataReader provides forward-only read-only access to data using a server-side cursor simply put it is ued to read the data.

. Using the DataReader can increase application performance both by retrieving data as soon as it is available and by default storing only one row at a time in memory reducing system overhead. The choice between SqlDataReader and DataSetDataTable is essentially one of the performance vs functionality issue. DataSet or DataTable - use SqlDataAdapter to generate it 2.

10 seconds to catch 1000 records. I can easily see that blue is way faster than pink though. A DataSet can be modified and rows can be added or deleted.

A very simple written. DataReader is used to read the data from the database and it is a read and forward only connection oriented architecture during fetch the data from database. Hi there i have some code using dataset I would like to use datareader instead Can someone have a look at my code and give me some tips on how i would change this iDB2Connection connDB2new iDB2Con.

It is used to hold multiple tables with data. System September 5 2014 308am 2. Even though we are comparing DataReader DataAdapter underneath the abstractions a DataAdapter uses a DataReader to populate the returned DataSet or DataTable.

Linq Im currently working with a client that supports an application originally built around 2003 so it was targeting the 11 Framework. A DataSet is a database-independent in-memory data store that enables the developer to directly access all rows and columns of one or many tables that a DataSet can contain. The DataSet is a better choice when building a Web service that will return the retrieved data.

And the reader as you say lets you implement your logic at a lower level so the performance will be better if the logic is simpler. ArticleBot September 2 2014 1023pm 1. In case of DataTable as the whole data comes offline hence it takes more amount of memory than using DataReader.

The DataAdapter acts as a bridge between a DataSet and a data source for retrieving and saving data. 2 - DataReader gives forward-only access to the data - DataSet gives scrollable navigation to the data. XmlReader - use it to provide a read only forward only data stream of XML data.

The DataAdapter uses the DataReader while filling a DataTable. Changes to a DataSet can be sent to the database via a managed providers objects. Another way to access data with ADONET is to use a DataSet.

Hence you get a performance gain by using DataReader instead of DataTable DataAdapter. Casey Barton - Tuesday February 12 2008 52650 PM. A DataAdapter is used to retrieve data from a data source and populate tables within a DataSet.

A dataset allows forward and backward movement through data and allows for updates. Another key difference between the DataSet and the DataReader is that the DataSet is fully navigable. 1- Using DataTable when you want to get Rows from one table or part of Rows from one table only.

3 - DataReader is read-only we cant make changes to the data present under it. DataSet is a collection of in-memory tables. 3- Using Dataset when You Want to Get Many Rows or all Rows from more than one Table.

DataAdapter is used to execute SQL statements and is used to populate the results of SQL Query into a DataSet or DataTable. The functionality of a reader is sort of one of many things that the data adapter itself must use to work with datasets. SqlDataReader - use it to provide read only forward only data stream 3.

DataReader is a connection oriented service. This is a dedicated thread for discussing the SitePoint article DataSet Vs. Its rows can be traversed forward or backward.

Last summer they upgraded to the 35 Framework but they have not yet taken advantage of the new features that can help them improve their performance. It fetches one row at a time so very less network cost when compare to DataSet. 1 - DataReader is designed in the connection-oriented architecture - DataSet is designed in the disconnected architecture.

2- Using DataReader To Fill Label and Text Box Specially For Small Amount Of Data Like User Details. DataReader will fetch the data very fast when compared with dataset. The DataAdapter helps mapping the data in the DataSet to match the data in the data source.

Unlike the DataReader the DataSet is not read-only. A datareader is for moving throuh data one time only while performing no updates. Generally we will use ExecuteReader object to bind data to datareader.

Archived Forums ADONET DataSet. The DataSet has a Tables collection of DataTable objects and the DataTable has a Rows. DataAdapter gets all the rows of the executed SQL statement at once and populates into DataSet or DataTable in memory and hence DataAdapter is bit slower compared to DataReader.

DataReader is used to retrieve read-only cannot updatemanipulate data back to datasource and forward-only cannot read backwardrandom data from a database. You can select data form tables create views based. Key differences in simple terms.

You can easily see why youd want to use a DataReader over a DataSet again unless you need the added features that DataSet gives you Not really. The DataSet class in ADONet operates in an entirely disconnected nature. The DataSet can also persist and reload its contents as XML and its schema as XML Schema definition language XSD schema.

Using a DataReader produces. DataSet is a disconnected orient architecture that means there is no need of active connections during work with datasets and it is a collection of DataTables and relations between tables. Results are returned as the query executes and are stored in the network buffer on the client until you request them using the Read method of the DataReader.

Access through DataSet.

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