Justin Cooney

Web Development Tips and Examples

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about

I am a Senior Applications Programmer / Analyst with years of experience developing enterprise solutions using the Microsoft technology stack including C#, VB.NET, ASP.NET, AJAX, IIS and SQL Server. I specialize in Web application development with a focus on building secure systems, integrating applications, and designing robust database structures.

Category: ADO.NET

  • .NET – Write A File to Disk from your Database

    In this example I will review and give examples in C# and VB.NET how to get and save a file stored in an Image datatype in a SQL Server table. Here is a link to a list of other articles I have written about using .NET with SQL Server.

  • ASP.NET – Handling Null Return Values from the Database using IsDBNull

    If you are retrieving or adding values from and to your database then you will know the difficulties that can be caused by NULL values. The notorious InvalidCastException is one example of receiving a NULL value from your database into an ASP.NET object that doesn’t know what to do with database NULL values. Here’s typical example…

  • ASP.NET – Example Connection Returning a Single Value

    By definition, a scalar query will return the first column of the first row of a database query. In plain English this means it will return a single value.  This can come in handy at times. In the next series of articles I will cover the basic data connections including basic examples in C# and…