.net

ConfigureAwait (sometimes) Saves the Day Everytime!

Bob CrowleyLeave a comment

I get in a lot of fights.

Fights about async/await anyway. Despite async/await being over 5 years old (AOTW), there still remains a lot of confusion regarding some basic functionality.

I do not presume to be an in-depth expert. Some of the things I read from Stephen Cleary or Jon Skeet make my eyes go crossed. But for your average, everyday usage, it doesn’t need to be so misunderstood.

I am not going to rehash the excellent articles that explain these things. I am going to share a WPF application that demonstrates some of the commonly misunderstood pitfalls so you can actually observe the things you read about by the experts like Stephen Cleary, Stephen Toub, Jon Skeet.

Introducing “WPFGui”…. This is a simple Windows Presentation Foundation application that will attempt to update the UI on each of the button clicks. Of course I don’t need to update the UI directly with MVVM, but this is a contrived example after all….

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OUTPUT parameters are the most efficient way to retrieve a single row from a Stored Procedure

Bob CrowleyLeave a comment

T-SQL stored procedures that return a single a value (scalar) or a single row can benefit from the use of OUTPUT parameters. This is not appropriate for multiple row result sets, but if you just need one value, or the results of a single row, you can do it most efficiently with OUTPUT parameters as opposed to SELECTing into a DataReader or DataSet. Continue reading →

A Basic Example of CRUD with DataGridView in VB.Net

Bob Crowley8 Comments

Intended for new developers, or at least new to ADO.Net, this post will demonstrate how to Create, Read, Update and Insert data into a MS SQL Server database. We will use a VB.Net winforms project, DataGridView and SqlDataAdapters. You can pull down the complete project from GitHub here.

UPDATE: I have also published a similar example application done with Code First EntityFramework 6.

The finished Form looks like this:
finishedform
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