Which is faster SQlDataAdapter and SqlDataReader?

Which is faster SQlDataAdapter and SqlDataReader?

A SqlDataAdapter is typically used to fill a DataSet or DataTable and so you will have access to the data after your connection has been closed (disconnected access). The SqlDataReader is a fast forward-only and connected cursor which tends to be generally quicker than filling a DataSet/DataTable.

What is the difference between DataAdapter & DataReader?

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).

What is the use of DataAdapter in Ado net?

The DataAdapter works as a bridge between a DataSet and a data source to retrieve data. DataAdapter is a class that represents a set of SQL commands and a database connection. It can be used to fill the DataSet and update the data source.

Is DataReader faster than DataTable?

We ended up writing some benchmarks to test the speed differences. It was generally agreed that a DataReader is faster, but we wanted to see how much faster. The results surprised us. The DataTable was consistently faster than the DataReader.

Why do we use SqlDataAdapter?

The SqlDataAdapter, serves as a bridge between a DataSet and SQL Server for retrieving and saving data. For more information, see Adding Existing Constraints to a DataSet. SqlDataAdapter is used in conjunction with SqlConnection and SqlCommand to increase performance when connecting to a SQL Server database.

Which object of ADO.NET has best performance for retrieving data?

A DataReader object has faster access to data. A DataSet object has slower access to data.

When should I use DataReader?

The DataReader provides an unbuffered stream of data that allows procedural logic to efficiently process results from a data source sequentially. The DataReader is a good choice when you’re retrieving large amounts of data because the data is not cached in memory.

Which one is faster DataReader or DataSet?

DataReader provides faster performance, but has read-only and forward-only access. DataSet, on the other hand, is high resource-consuming, but offers more control and a disconnected nature. If you want random access and do not need to worry about having a constant connection with the database, go with DataSet.

When should you use DataSet?

A DataSet is a collection of tables linked together through relations. It is useful only when you need relations. When you work with only one table, or with many tables that are not linked together, a DataSet adds extra useless overhead. A DataTable is sufficient.

What’s the difference between sqldataadapter and sqldatareader?

A SqlDataAdapter is typically used to fill a DataSet or DataTable and so you will have access to the data after your connection has been closed (disconnected access). The SqlDataReader is a fast forward-only and connected cursor which tends to be generally quicker than filling a DataSet/DataTable.

Do you need to close a sqldatareader connection?

WARNING: If you are using a SQLDataReader, ALWAYS, ALWAYS, ALWAYS make sure that you write proper code to close the connection since you are keeping the connection open with the SQLDataReader.

Can a LINQ query be run on a DataReader?

DataSet is an in-memory datastore, whereas datareader is just a medium to retrieve the data. On a lighter note, you can run Linq queries on DataSet, but not on a datareader. – Partha Choudhury Nov 4 ’09 at 21:45 This answer is misleading.