How do you perform asynchronous database operations in
Short answer: ADO.NET? ADO.NET supports asynchronous database operations using the async and await keywords in C#. This allows the application to remain responsive while waiting for the database operation to complete. ExecuteNonQueryAsync: Executes a SQL command asynchronously. ExecuteReaderAsync: Executes a query and returns a SqlDataReader synchronously.………… ExecuteScalarAsync: Executes a query and returns a single value…
Explain a bit more
asynchronously. public async Task GetDataAsync() { SqlConnection connection = new SqlConnection(connectionString); wait connection.OpenAsync(); SqlCommand command = new SqlCommand("SELECT * FROM Customers", connection); SqlDataReader reader = await command.ExecuteReaderAsync(); while (await reader.ReadAsync()) { Console.WriteLine(reader["CustomerName"].ToString()); } reader.Close(); } ADO.NET? ADO.NET supports asynchronous database operations using the async and await keywords in C#. This allows the application to remain responsive while waiting for the database operation to complete. ExecuteNonQueryAsync: Executes a SQL command asynchronously. ExecuteReaderAsync: Executes a query and returns a SqlDataReader synchronously.…… ExecuteScalarAsync: Executes a query and returns a single value asynchronously.
Example code
public async Task GetDataAsync() { SqlConnection connection = new SqlConnection(connectionString); wait connection.OpenAsync(); SqlCommand command = new SqlCommand("SELECT * FROM Customers", connection); SqlDataReader reader = await command.ExecuteReaderAsync(); while (await reader.ReadAsync()) { Console.WriteLine(reader["CustomerName"].ToString()); } reader.Close(); }
Real-world example (ShopNest)
ShopNest’s reporting job still uses ADO.NET for a heavy SQL query where raw performance and stored procedures matter more than EF convenience.
Say this in the interview
- Define — one clear sentence (the short answer above).
- Example — relate it to a project like ShopNest or your real work.
- Trade-off — when you would not use it.
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