Chapter 5 Connector/NET Programming

Table of Contents

5.1 Using GetSchema on a Connection

5.2 Using MySqlCommand

5.3 Using Connector/NET with Table Caching

5.4 Preparing Statements in Connector/NET

5.5 Creating and Calling Stored Procedures

5.6 Handling BLOB Data With Connector/NET

5.6.1 Preparing the MySQL Server

5.6.2 Writing a File to the Database

5.6.3 Reading a BLOB from the Database to a File on Disk

5.7 Working with Partial Trust / Medium Trust

5.7.1 Evolution of Partial Trust Support Across Connector/NET Versions

5.7.2 Configuring Partial Trust with Connector/NET Library Installed in GAC

5.7.3 Configuring Partial Trust with Connector/NET Library Not Installed in GAC

5.8 Writing a Custom Authentication Plugin

5.9 Using the Connector/NET Interceptor Classes

5.10 Handling Date and Time Information in Connector/NET

5.10.1 Fractional Seconds

5.10.2 Problems when Using Invalid Dates

5.10.3 Restricting Invalid Dates

5.10.4 Handling Invalid Dates

5.10.5 Handling NULL Dates

5.11 Using the MySqlBulkLoader Class

5.12 Using the Connector/NET Trace Source Object

5.12.1 Viewing MySQL Trace Information

5.12.2 Building Custom Listeners

5.13 Using Connector/NET with Crystal Reports

5.13.1 Creating a Data Source

5.13.2 Creating the Report

5.13.3 Displaying the Report

5.14 Asynchronous Methods

5.15 Binary and Nonbinary Issues

5.16 Character Set Considerations for Connector/NET

MySQL Connector/NET comprises several classes that are used to connect to the database, execute queries and statements, and manage query results.

The following are the major classes of Connector/NET:

• MySqlConnection: Represents an open connection to a MySQL database (see Chapter 4, Connector/NET Connections).

  The MySqlConnectionStringBuilder class aids in the creation of a connection string by exposing the connection options as properties.

• MySqlCommand: Represents an SQL statement to execute against a MySQL database.

• MySqlCommandBuilder: Automatically generates single-table commands used to reconcile changes made to a DataSet with the associated MySQL database.

• MySqlDataAdapter: Represents a set of data commands and a database connection that are used to fill a data set and update a MySQL database.

• MySqlDataReader: Provides a means of reading a forward-only stream of rows from a MySQL database.

• MySqlException: The exception that is thrown when MySQL returns an error.

• MySqlHelper: Helper class that makes it easier to work with the provider.

• MySqlTransaction: Represents an SQL transaction to be made in a MySQL database.