How to ADO.NET SqlDataReader
SqlDataReader Object provides a connection oriented data access to the SQL Server data Sources. ExecuteReader() in the SqlCommand Object send the SQL statements to SqlConnection Object and populate a SqlDataReader Object based on the SQL statement.
Dim sqlReader As SqlDataReader = sqlCmd.ExecuteReader()
When the ExecuteReader method in SqlCommand Object execute , it instantiate a SqlClient.SqlDataReader Object. When started to read from a DataReader it should always be open and positioned prior to the first record. The Read() method in the DataReader is used to read the rows from DataReader and it always moves forward to a new valid row, if any row exist .
connetionString = "Data Source=ServerName;Initial Catalog=DatabaseName;User ID=UserName;Password=Password"
sql = "Your SQL Statement Here , like Select * from product"
You have to replace the string with your realtime variables.
- ADO.NET Connection Object
- ADO.NET SQL Server Connection
- ADO.NET OLEDB Connection
- ADO.NET ODBC Connection
- ADO.NET Command
- ADO.NET ExecuteNonQuery in SqlCommand Object
- ADO.NET ExecuteNonQuery in OleDbCommand Object
- ADO.NET ExecuteScalar in SqlCommand Object
- ADO.NET ExecuteScalar in OleDbCommand Object
- ADO.NET ExecuteReader in SqlCommand Object
- ADO.NET ExecuteReader in OleDbCommand Object
- How to ADO.NET DataReader
- How to ADO.NET OleDbDataReader
- How to Multiple Result Sets in ADO.NET
- Getting Schema Informations from SqlDataReader
- Getting Schema Informations from OleDbDataReader
- What is DataAdapter
- What is SqlDataAdapter
- What is OleDbDataAdapter
- Vb.NET ExecuteReader and ExecuteNonQuery