data management with ado
DESCRIPTION
TRANSCRIPT
DATA MANAGEMENT WITH ADO.NET
ADO.NET
Introduced in ver 1.0 of .NET
Used to manage data contained in a relational database.
ADO.NET 1.0
DataReaderDataSet
ADO.NET 2.0
Introduced many new features
Common ADO.NET Tasks
Selecting DataInserting DataUpdating DataDeleting Data
Basic ADO.NET Namespaces and
ClassesSystem.DataSystem.Data.CommonSystem.Data.OleDbSystem.Data.OdbcSystem.Data.SqlClientSystemData.SqlTypes
Using Connection Object
Properties of ConnectionConnectionStringDataSourceDatabaseState
Connection
Dim conn as SqlConnection
Conn=new SqlConnection(“server=localhost;uid=sa;pwd=;database=Northwind”);
conn.Open()
Command Object
Used to execute SQL queries
Properties of SqlCommand
CommandTextCommandTimeoutCommandTypeConnection
Execute Methods of Command Object
ExecuteNonQueryExecuteReaderExecuteRowExecuteScalarExecuteXmlReader
DataAdapterBridges gap b/w disconnected DataTable object and Physical data source
It can execute SELECT on datasource
It can execute INSERT, DELETE, UPDATE operations
DataAdapterPropertiesSelectCommand InsertCommandUpdateCommandDeleteCommand
Using Parameters
Properties of SqlParameter ParameterName SqlDbType Size Direction SourceColumn Value