How to Retrieve the Last Insert ID Using MySql Connector .NET?

Retrieving Last Insert ID Using MySql Connector .NET

When executing insert statements with the MySql Connector .NET library, it's essential to retrieve the last insert ID to track the primary key of the newly created record.

The question presented indicates that the assumption of using MySqlHelper.ExecuteNonQuery to obtain the last insert ID is incorrect. While it returns the number of affected rows (usually 1 for an insert operation), it doesn't provide the actual last insert ID.

To correctly retrieve the last insert ID, it's recommended to utilize the LastInsertedId field of the MySqlCommand object, as suggested in the provided answer.

Here's an example code snippet demonstrating the correct usage:

<code class="c#">using MySql.Data.MySqlClient;

MySqlCommand dbcmd = _conn.CreateCommand();
dbcmd.CommandText = sqlCommandString;
dbcmd.ExecuteNonQuery();
long imageId = dbcmd.LastInsertedId;</code>

By using this approach, you can reliably retrieve the last insert ID after executing an insert operation, enabling you to effectively track the primary key of the newly created record.

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