Tutorials ADO.NET Core Tutorial
Debugging Transactions — Complete Guide
Debugging Transactions — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of ADO.NET Core Tutorial on Toolliyo Academy.
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ADO.NET Core Tutorial · Lesson 77 of 100
Debugging Transactions
Foundations ✓ → SQL & safety ✓ → Production → Projects
Production · 3 — ASP.NET & enterprise · ~10 min · Module 8: Testing and Debugging
What is this?
Debug transactions by logging begin/commit/rollback and verifying connection enlistment.
Why should you care?
ShopNest double-charges often mean commit after partial failure or missing rollback.
See it live — copy this example
Use a .NET console or API project with SQL Server LocalDB. Run dotnet run after pasting.
await using var tx = (SqlTransaction)await conn.BeginTransactionAsync(ct);
try {
_logger.LogDebug("tx begin {Id}", tx.GetHashCode());
// work
await tx.CommitAsync(ct);
} catch {
await tx.RollbackAsync(ct);
throw;
}What happened?
- One connection owns the tx.
- All commands set Transaction.
- Never leave open tx on pool return.
Practice next
- Log begin/commit/rollback.
- Assert cmd.Transaction set.
- Fail midway in lab.
- Nested savepoints demo.
- Timeout mid-tx behavior.
Remember
Log tx lifecycle. Enlist every command. Always rollback on error.
ShopNest payment+order tx
Lab failure rolls both sides back.
Outcome: No orphan payments.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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