How Can I Safely Handle Exceptions When Using the C# `using` Statement with `SqlConnection`?

Using the C# using Statement with SQL and SqlConnection

The using statement in C# allows for the safe and automatic management of disposable resources, such as database connections. In the provided example, the using statement is used to create a SqlConnection object and ensure its proper disposal even in the event of an exception.

However, if an error occurs while attempting to open the connection, the using statement may not be able to catch it. This is because the exception is thrown before the statement is entered. To handle this scenario effectively, a try-catch block can be used within the using statement.

The modified code would look like:

private static void CreateCommand(string queryString, string connectionString)
{
    using (var connection = new SqlConnection(connectionString))
    {
        try
        {
            var command = new SqlCommand(queryString, connection);
            command.Connection.Open();
            command.ExecuteNonQuery();
        }
        catch (InvalidOperationException)
        {
            // Log and/or rethrow or ignore the error
        }
        catch (SqlException)
        {
            // Log and/or rethrow or ignore the error
        }
        catch (ArgumentException)
        {
            // Log and/or rethrow or ignore the error
        }
    }
}

By using this approach, any exceptions that occur during the execution of the SqlCommand will be caught within the try block. This allows for custom error handling and logging, ensuring that the connection is properly released and any necessary actions are taken in case of failure.

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