Mid From PDF ADO.NET ADO.NET

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

  1. Define — one clear sentence (the short answer above).
  2. Example — relate it to a project like ShopNest or your real work.
  3. Trade-off — when you would not use it.
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