Connection vs. Ambient Transactions in .NET: Which Should You Choose?

Detailed explanation of .NET transactions

Transactions in .NET ensure that a set of operations is atomic and isolated. This means that all operations are either committed to the database or none are committed. For applications that update data, transactions are critical to ensuring data integrity.

.NET transaction type: connection transaction and environment transaction

.NET has two main transaction types: connection transactions and environment transactions.

• Connection transaction is bound directly to the database connection. This means that connection transactions must be explicitly created, committed, or rolled back using the IDbTransaction interface.
• Environment transaction scope is limited to a certain thread, and any resource that supports transactions (such as SqlConnection) used within this scope will automatically join the environment transaction. Environment transactions are created using the TransactionScope class.

.NET Transaction Best Practices

Here are some best practices for using transactions in .NET:

• Use environmental transactions whenever possible. Environment transactions are easier to use and manage than connection transactions.
• A transaction can only be committed after it is certain that all operations in the transaction were successful.
• If any operation in the transaction fails, roll back the transaction.
• Use the try-finally block to ensure that transaction resources are always released, even if an exception occurs.
• Understand the performance impact of using transactions. Transactions can add overhead to your application, so use them only when necessary.

Transaction Troubleshooting

If you have transaction issues, please check the following:

• Make sure the database connection is in transaction.
• Ensure that all operations within a transaction are transaction safe.
• Check the Enlist parameters in the connection string. For environmental transactions, this parameter must be set to true.

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