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System.DateTime in Entities - Dammed if you're nullable, Dammed if you're not

Often when designing my entity objects, I've used System.Object instead of System.DateTime for dates that can be nullable. (Sidebar: System.DateTime is a value type, so it can't be null) In Whidbey, this is cake using Nullable types : public Nullable<DateTime> ShippedDate; But for now, I've decided...

Published 02-16-2005 7:23 AM by Brendan Tompkins

Filed under: .NET General
Fix for System.DirectoryServices error "Operation is not valid due to the current state of the object."

If you use the System.DirectoryServices namespace to do Active Directory stuff, you may have run into this error: Operation is not valid due to the current state of the object.at System.DirectoryServices.PropertyValueCollection.OnInsertComplete(Int32 index, Object value) at System.Collections.CollectionBase...

Published 02-10-2005 12:31 PM by Brendan Tompkins

Filed under: .NET General
Indigo Out in the Open

Should start seeing lots of Indigo-related stuff soon (see Indigo - now we can talk... and Today and tomorrow: Will Indigo heal... ? ) as an example, Rockford's blogging about Indigo: the future of asmx/wse/es/msmq/remoting . I'm particularly interested in the Reliable Messaging pieces, since it relates...

Published 02-08-2005 12:58 PM by Brendan Tompkins

Filed under: .NET General
VS Code Templates From Eddie

In a comment to my previous post on collections, Eddie Garmon posted a link to his Visual Studio Templates (with Installer) . It's a good set of templates, and even better, you can modify them to suit your needs, if you know where to do it . I quickly modified his template for a typed collection, to...

Published 02-08-2005 10:45 AM by Brendan Tompkins

Filed under: .NET General
A Collection of Collections Stuff

I'm on a quest to find the “Perfect“ collection template - my goal is to create a ReSharper LiveTemplate once I do, so I can easily add them to my projects. Of course, perfect is relative to the task at hand, but I want a good, simple all purpose collection template that I can use for the...

Published 02-08-2005 8:23 AM by Brendan Tompkins

Filed under: .NET General
It Worked on My Machines...

Once, a group of friends and I were standing in the data center of a large Fortune 500 company, and one of us was bragging about his new server with “hot-swappable” disk drives. Keep in mind, this was new technology back then, so he was really rubbing it in our faces. “You could pull...

Published 02-03-2005 12:35 PM by Brendan Tompkins

Filed under: .NET General
The Problem with Typed DataSets?

OBSOLETE CONTENT The author of this post has determined that this content is obsolete. Use at your own risk! Blog posts are a point-in-time snapshot of the blogger's thinking and should not be assumed to represent this blogger's current opinions. This post was left up for historical purposes. Yesterday...

Published 05-04-2004 8:31 AM by Brendan Tompkins

Filed under: .NET General
Goodbye CodeSmart, Hello CodeRush!

OBSOLETE CONTENT The author of this post has determined that this content is obsolete. Use at your own risk! Blog posts are a point-in-time snapshot of the blogger's thinking and should not be assumed to represent this blogger's current opinions. This post was left up for historical purposes. Wow. Via...

Published 04-22-2004 7:28 AM by Brendan Tompkins

Filed under: .NET General
Getting the most out of System.DateTime

First of all, I have to proclaim my love for the System.DateTime and System.TimeSpan object. I have to say that other than System.Data.DataSet family of objects, they're my favorite. The thing I like most, is that they give you just enough to usefully and easily extend the functionality, without being...

Published 04-20-2004 8:16 AM by Brendan Tompkins

Filed under: .NET General
Multi-Table DataSet with DataRelations from a Single-Table DataSet

Recently, I was tasked with creating a reporting application that did the following: Allow the user to choose Columns in one DataTable in a DataSet to group by. Render a grouped report from the flat table data. So, for example, if the DataTable looked like this: Department EmployeeID Product Count Purchasing...

Published 04-15-2004 7:23 AM by Brendan Tompkins

Filed under: .NET General
DataAdapter for Active Directory/LDAP?

I'm writing a bunch of AD code for adding users, groups, etc. and I got to thinking, “Wouldn't it be cool if there was an AD DataAdapter for managing AD objects using DataSets?” You can, of course, load AD data into DataSets through linked servers , but AFAIK, there's no DataAdapter for automatically...

Published 03-31-2004 1:44 PM by Brendan Tompkins

Filed under: .NET General
Cool Tool: Reflector for .NET

This thing's pretty neat, Lutz Roeder's Reflector for .NET . Reflector is a class browser for .NET components (assemblies). It supports assembly and namespace views, type and member search, C# XML documentation viewer, reference search, IL disassembler, VB and C# decompiler, dependency trees, supertype...

Published 03-31-2004 8:14 AM by Brendan Tompkins

Filed under: .NET General
.NET Custom Config Sections

.NET .config files are a nice but limited way to configure all kinds of .NET applications. They're especially good for configuring stuff that can be boiled down into simple name/value pairs, like database connection strings, directory locations, etc. I've found that when you need to configure an application...

Published 02-23-2004 1:37 PM by Brendan Tompkins

Filed under: .NET General
Who do you think you are, anyway?

Sometimes simply knowing who you are can help a great deal. I just figured out some tricky Active Directory permission issues by tracing out the current WindowsIdentity, like so: string strCurrentID = System.Security.Principal.WindowsIdentity.GetCurrent().Name; System.Diagnostics.Trace.WriteLine("Current...

Published 01-28-2004 12:30 PM by Brendan Tompkins

Filed under: .NET General
Visual Studio Code Templates - Modifying Your Default Templates

I spent last couple of days looking into modifying the default templates that come with VS.NET. It ended up being a strange journey into the guts of the VS.NET template architecture. It's kind of messy down there, which was surprising , but I ended up learning a lot about modifying templates and adding...

Published 01-12-2004 1:28 PM by Brendan Tompkins

Filed under: .NET General, Most Popular

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System.DateTime in Entities - Dammed if you're nullable, Dammed if you're not

Fix for System.DirectoryServices error "Operation is not valid due to the current state of the object."

Indigo Out in the Open

VS Code Templates From Eddie

A Collection of Collections Stuff

It Worked on My Machines...

The Problem with Typed DataSets?

Goodbye CodeSmart, Hello CodeRush!

Getting the most out of System.DateTime

Multi-Table DataSet with DataRelations from a Single-Table DataSet

DataAdapter for Active Directory/LDAP?

Cool Tool: Reflector for .NET

.NET Custom Config Sections

Who do you think you are, anyway?

Visual Studio Code Templates - Modifying Your Default Templates