April 2003
Beginner to intermediate
620 pages
21h 48m
English
Content preview from ADO.NET in a Nutshell
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Comments/Troubleshooting
All Parameter
objects implement the
IDbDataParameter and
IDataParameter interfaces from the
System.Data namespace, and are thus quite similar.
Because IDbDataParameter extends
IDataParameter, you can use the
IDataParameter to access all functionality when
writing provider-agnostic data access code.
Provider-specific Parameter objects typically add
a property that defines a database-specific data type for the
parameter. Some Parameter classes for ADO.NET
providers are shown in Table 20-1.
Table 20-1. Provider-specific Parameter classes
|
Class |
Data source |
System.Data.SqlClient.SqlParameter |
SQL Server |
System.Data.OleDb.OleDbParameter |
An OLE DB provider |
System.Data.Odbc.OdbcParameter |
An ODBC driver |
System.Data.OleDb.OracleParameter |
Oracle |
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