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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘C# 4.0’ Category

How to secure memory? – Medo’s Home Page

Posted by jpluimers on 2017/03/15

Sometime you might want to protect your data in memory – the greatest example is when dealing with anything related to passwords. It is simply not smart to keep that data around in a plain-text. In .NET there are multiple methods you can use for this purpose, starting with SecureString, ProtectedMemory, and my favorite ProtectedData.…

Source: How to secure memory? – Medo’s Home Page

via: Found this via +Ilya S a post from +Josip Medved – Stuff like this should be way built into an OS, and RTL’s should have a secureMalloc()… – Joe C. Hecht – Google+

–jeroen

 

Posted in .NET, .NET 4.0, .NET 4.5, C#, C# 4.0, C# 5.0, C# 6 (Roslyn), Development, Software Development | Leave a Comment »

.NET/C# some links on querying the ActiveDirectory

Posted by jpluimers on 2016/12/15

Without dsquery installable, I had to query an ActiveDirectory spanning two domains.

Here are some links that helped:

–jeroen

Posted in .NET, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, C#, C# 2.0, C# 3.0, C# 4.0, C# 5.0, C# 6 (Roslyn), Development, Software Development | Leave a Comment »

Unity IoC container: tips, tricks and dirty hacks

Posted by jpluimers on 2016/11/03

The #Fellows | Unity IoC container: tips, tricks and dirty hacks post is a very readable and to-the-point introduction to Unity IoC focussing on Dependency Injection. Implementation details of various IoC/DI frameworks differ, so some keywords:

  • Container
  • InjectionConstructor
  • InjectionProperty
  • Inversion of Control
  • Named registration (or keyed registration)
  • PerResolveLifetimeManager
  • Register
  • RegisterType
  • Resolve
  • ResolvedParameter

–jeroen

Posted in .NET, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, C#, C# 3.0, C# 4.0, C# 5.0, C# 6 (Roslyn), Development, Software Development | Leave a Comment »

Yes Dorothy, the .NET System.Array Class can throw you a NotSupportedException

Posted by jpluimers on 2016/09/21

It’s been in the System.Array class forever, but remarkably few people do know that it can throw you a NotSupportedException (for instance when calling Add, Insert, Remove, etc).

It does because it implements IList, but not all methods implemented from IList are valid.

And it also indicates that, as the IList Properties allows for IsFixedSize to return false.

A similar case is there for IsReadOnly: then you cannot even modify the values.

Ever since I started teaching .NET/C# classes almost 15 years ago, I warned:

beware when you use IList as not everybody implements all methods.

–jeroen

via:

Posted in .NET, .NET 1.x, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, C#, C# 1.0, C# 2.0, C# 3.0, C# 4.0, C# 5.0, C# 6 (Roslyn), Development, Software Development | Leave a Comment »

.NET/C#: two ways of creating an empty array

Posted by jpluimers on 2016/08/18

Empty arrays are not used often as arrays usually are about the presence data, not about the absence.

Here are two ways based on the int data type in C# (the original [WayBackexamples [WayBack] are using string, but since string itself is also a kind of array…):

Specify a size of zero:

int[] a = new int[0];

Specify an empty initialisation:

int[] a = new int[] { };

Though many people think arrays are a thing of the past, I think it is one of the first generic types and have their place. For one, enumerating over arrays using foreach is a lot faster in many environments than enumerating over other data types. Another thing is that the fixed nature of arrays can be very beneficial in setting constraints.

That’s why I like the balanced view from Eric Lippert [WayBack] in Arrays considered somewhat harmful – Fabulous Adventures In Coding – Site Home – MSDN Blogs [WayBack]

–jeroen

via:

Posted in .NET, .NET 1.x, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, C#, C# 1.0, C# 2.0, C# 3.0, C# 4.0, C# 5.0, C# 6 (Roslyn), Development, Software Development | Leave a Comment »

 
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