How do you convert a DataSet into a DataTable?

How do you convert a DataSet into a DataTable?

Convert DataSet to DataTable

1. DataSet ds;
2. DataTable dt= ds. Tables[0];

What does SqlDataReader return?

As explained earlier, the SqlDataReader returns data via a sequential stream. To read this data, you must pull data from a table row-by-row Once a row has been read, the previous row is no longer available.

What is DataTable and how fill data in DataTable using DataReader?

You can load a DataTable directly from a data reader using the Load() method that accepts an IDataReader . You don’t even need to define the columns. Just create the DataTable and Fill it. Here, cString is your connection string and sql is the stored procedure command.

What is difference between SqlDataReader and SqlDataAdapter?

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 use of SqlDataReader?

SqlDataReader Object provides a connection oriented data access to the SQL Server data Sources from C# applications. ExecuteReader() in the SqlCommand Object sends the SQL statements to the SqlConnection Object and populate a SqlDataReader Object based on the SQL statement or Stored Procedures.

Why do we use SqlDataReader?

The ADO.NET SqlDataReader class in C# is used to read data from the SQL Server database in the most efficient manner. It reads data in the forward-only direction. It means, once it read a record, it will then read the next record, there is no way to go back and read the previous record. SqlDataReader is read-only.

What is the use of SqlDataReader in C#?

SqlDataReader : This is the class of connected architecture in . NET framework. The SqlDataReader is used to read a row of record at a time which is got using SqlCommand. It is read only, which means we can only read the record; it can not be edited.

Which is better DataSet or DataTable?

DataTable. DataTable represents a single table in the database. It has rows and columns. There is no much difference between dataset and datatable, dataset is simply the collection of datatables.