System.Data.SQLite how to Support Multiple Transactions

System.Data.SQLite how to Support Multiple Transactions

In System.Data.SQLite, you can support multiple transactions by creating separate SQLiteConnection and SQLiteTransaction objects for each transaction. Each transaction operates independently, allowing you to manage them concurrently.

Here's an example of how to support multiple transactions in System.Data.SQLite:

using System; using System.Data.SQLite; class Program { static void Main() { // Replace "YourConnectionString" with the appropriate connection string to your SQLite database. string connectionString = "YourConnectionString"; // Create a connection to the database using (SQLiteConnection connection = new SQLiteConnection(connectionString)) { connection.Open(); // Transaction 1: Insert data into Table1 using (SQLiteTransaction transaction1 = connection.BeginTransaction()) { try { // Perform operations for Transaction 1 using (SQLiteCommand command1 = connection.CreateCommand()) { command1.CommandText = "INSERT INTO Table1 (Column1, Column2) VALUES (@value1, @value2)"; command1.Parameters.AddWithValue("@value1", "Data1"); command1.Parameters.AddWithValue("@value2", 123); command1.ExecuteNonQuery(); } // Commit Transaction 1 transaction1.Commit(); } catch (Exception ex) { Console.WriteLine($"Error in Transaction 1: {ex.Message}"); // Rollback Transaction 1 on error transaction1.Rollback(); } } // Transaction 2: Update data in Table2 using (SQLiteTransaction transaction2 = connection.BeginTransaction()) { try { // Perform operations for Transaction 2 using (SQLiteCommand command2 = connection.CreateCommand()) { command2.CommandText = "UPDATE Table2 SET Column3 = @value WHERE Column4 = @key"; command2.Parameters.AddWithValue("@value", "UpdatedData"); command2.Parameters.AddWithValue("@key", "SomeKey"); command2.ExecuteNonQuery(); } // Commit Transaction 2 transaction2.Commit(); } catch (Exception ex) { Console.WriteLine($"Error in Transaction 2: {ex.Message}"); // Rollback Transaction 2 on error transaction2.Rollback(); } } // Other operations and transactions can be performed here // ... // Close the connection when you're done connection.Close(); } } }

In this example, we use two separate transactions, transaction1 and transaction2, for different operations (insertion and update) in the database. Each transaction is wrapped in a using statement to ensure proper disposal and management.

Remember to replace "YourConnectionString" with the actual connection string to your SQLite database. Additionally, you can perform multiple transactions sequentially or concurrently based on your application's requirements.

Examples

  1. "System.Data.SQLite multiple transactions example"

    • Description: Learn how to implement multiple transactions in System.Data.SQLite with this example. Understand the process of managing and committing multiple transactions within a SQLite database.
    using (var connection = new SQLiteConnection("Data Source=mydatabase.db;Version=3;")) { connection.Open(); using (var transaction = connection.BeginTransaction()) { try { // Perform transactional operations here // Commit the first transaction transaction.Commit(); // Start a new transaction using (var newTransaction = connection.BeginTransaction()) { try { // Perform operations for the second transaction // Commit the second transaction newTransaction.Commit(); } catch { // Handle exceptions for the second transaction newTransaction.Rollback(); } } } catch { // Handle exceptions for the first transaction transaction.Rollback(); } } }

  2. "System.Data.SQLite nested transactions example"

    • Description: Explore how to use nested transactions in System.Data.SQLite. This example demonstrates the implementation of transactions within transactions, providing a clear understanding of the nesting concept.
    using (var connection = new SQLiteConnection("Data Source=mydatabase.db;Version=3;")) { connection.Open(); using (var transaction = connection.BeginTransaction()) { try { // Perform operations for the outer transaction // Start a nested transaction using (var nestedTransaction = connection.BeginTransaction()) { try { // Perform operations for the nested transaction // Commit the nested transaction nestedTransaction.Commit(); } catch { // Handle exceptions for the nested transaction nestedTransaction.Rollback(); } } // Commit the outer transaction transaction.Commit(); } catch { // Handle exceptions for the outer transaction transaction.Rollback(); } } }

  3. "System.Data.SQLite transaction isolation levels"

    • Description: Understand different transaction isolation levels in System.Data.SQLite and how to set them. This example provides insights into using levels such as ReadCommitted, ReadUncommitted, RepeatableRead, and Serializable.
    using (var connection = new SQLiteConnection("Data Source=mydatabase.db;Version=3;")) { connection.Open(); using (var transaction = connection.BeginTransaction(IsolationLevel.Serializable)) { try { // Perform operations with the specified isolation level // Commit the transaction transaction.Commit(); } catch { // Handle exceptions for the transaction transaction.Rollback(); } } }

  4. "System.Data.SQLite savepoint example"

    • Description: Learn how to use savepoints in System.Data.SQLite to create points within a transaction where you can roll back to if needed. This example demonstrates the implementation of savepoints for improved transaction management.
    using (var connection = new SQLiteConnection("Data Source=mydatabase.db;Version=3;")) { connection.Open(); using (var transaction = connection.BeginTransaction()) { try { // Perform operations before the savepoint // Create a savepoint var savepoint = transaction.Save("mySavepoint"); try { // Perform operations within the savepoint // Release the savepoint savepoint.Release(); } catch { // Rollback to the savepoint in case of an exception savepoint.Rollback(); } // Continue with operations after the savepoint // Commit the transaction transaction.Commit(); } catch { // Handle exceptions for the transaction transaction.Rollback(); } } }

  5. "System.Data.SQLite transaction timeout"

    • Description: Learn how to set a transaction timeout in System.Data.SQLite to control the maximum duration a transaction can run. This example provides insights into preventing long-running transactions that may cause issues in a database.
    using (var connection = new SQLiteConnection("Data Source=mydatabase.db;Version=3;")) { connection.Open(); using (var transaction = connection.BeginTransaction()) { try { // Set a transaction timeout (e.g., 30 seconds) transaction.CommandTimeout = 30; // Perform operations within the transaction // Commit the transaction transaction.Commit(); } catch { // Handle exceptions for the transaction transaction.Rollback(); } } }

  6. "System.Data.SQLite transaction error handling"

    • Description: Understand best practices for error handling within transactions in System.Data.SQLite. This example demonstrates how to catch and handle specific exceptions that may occur during transactional operations.
    using (var connection = new SQLiteConnection("Data Source=mydatabase.db;Version=3;")) { connection.Open(); using (var transaction = connection.BeginTransaction()) { try { // Perform operations within the transaction // Commit the transaction transaction.Commit(); } catch (SQLiteException ex) { // Handle specific SQLite exceptions Console.WriteLine("SQLite Exception: " + ex.Message); // Rollback the transaction transaction.Rollback(); } catch (Exception ex) { // Handle other exceptions Console.WriteLine("General Exception: " + ex.Message); // Rollback the transaction transaction.Rollback(); } } }

  7. "System.Data.SQLite batch transactions"

    • Description: Learn how to perform batch transactions in System.Data.SQLite for executing multiple operations as a single unit. This example demonstrates the benefits of batching transactions for improved efficiency.
    using (var connection = new SQLiteConnection("Data Source=mydatabase.db;Version=3;")) { connection.Open(); using (var transaction = connection.BeginTransaction()) { try { // Perform batch operations within the transaction // Commit the transaction transaction.Commit(); } catch { // Handle exceptions for the transaction transaction.Rollback(); } } }

More Tags

built-in-types android-bottomsheetdialog abap robotframework-ide sms android-textinputedittext android-json core-image registry at-command

More C# Questions

More Cat Calculators

More Various Measurements Units Calculators

More Animal pregnancy Calculators

More Auto Calculators