How do you handle exceptions in ADO.NET?
Short answer: ADO.NET exceptions are typically handled using try-catch blocks. This helps to capture any errors during database operations such as connection failures, query issues, or command execution errors. Example: try { SqlConnection connection = new SqlConnection(connectionString); connection.Open(); SqlCommand command = new SqlCommand("SELECT * FROM Customers", connection); SqlDataReader reader = command.ExecuteReader();
Example code
} catch (SqlException ex) { Console.WriteLine("Database error: " + ex.Message); } catch (Exception ex) { Console.WriteLine("General error: " + ex.Message); }
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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