Do I need to close SqlDataReader?

Do I need to close SqlDataReader?

Remarks. You must explicitly call the Close method when you are through using the SqlDataReader to use the associated SqlConnection for any other purpose. Do not call Close or Dispose on a Connection, a DataReader, or any other managed object in the Finalize method of your class.

How do I turn off DataReader in C#?

You should always call the Close method when you have finished using the DataReader object….The following code example iterates through a DataReader object, and returns two columns from each row.

1. while (myReader.Read())
2. Console. WriteLine(“\t{0}\t{1}”, myReader. GetInt32(0), myReader. GetString(1));
3. myReader. Close();

What does SqlDataReader return?

Notice the call to Read on the SqlDataReader, rdr, in the while loop condition in the code above. The return value of Read is type bool and returns true as long as there are more records to read. After the last record in the data stream has been read, Read returns false.

What is ExecuteReader in C#?

ExecuteReader : ExecuteReader used for getting the query results as a DataReader object. It is readonly forward only retrieval of records and it uses select command to read through the table from the first to the last. It is used to execute the sql statements like update, insert, delete etc.

How do I close an execute reader in VB net?

3 Answers. The best way is to use the Using -statement which ensures that unmanaged resources are disposed(even on error). This also closes the reader.

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.

How to tell if a sqlconnection has an attached sqldatareader?

Examples. The following example creates a SqlConnection,a SqlCommand,and a SqlDataReader.

Remarks. To create a SqlDataReader,you must call the ExecuteReader method of the SqlCommand object,instead of directly using a constructor.

Properties. Gets the SqlConnection associated with the SqlDataReader.

Methods. Closes the SqlDataReader object.

How to convert DataReader to dataset?

<?xml version=”1.0″ encoding=”utf-8″?>

<configuration>

<startup>

<supportedRuntime version=”v4.0″ sku=”.NETFramework,Version=v4.5″/>

</startup>

<connectionStrings>

<add name=”ConString” connectionString=”Data Source=.; User Id=sa;word=Test123!;Database=WpfPractice” providerName=”System.Data.SqlClient”/>

</connectionStrings>

</configuration>

How to loop DataReader and create DataTable in PowerShell?

Closing the DataReader. Always call the Close method when you have finished using the DataReader object.

Retrieving multiple result sets using NextResult.

Getting schema information from the DataReader.

Working with OLE DB chapters.

Returning results with Oracle REF CURSORs.