How to convert C# DateTime.Ticks into Unix timestamp

C# DateTime.Ticks ConverterWith the .NET frameworks DateTime functions you can do a lot of nice things. The handling turns out, in my opinion, very pleasant. The only requirement: You find yourself in a pure .NET environment. When other systems come into play, the trouble begins. But why is it that you can not compare DateTime.Ticks with the PHP mktime()-function?
If you request the “timestamp” from a DateTime-object (DateTime.Ticks), so you get back the number of ticks since 01.01.0001 00:00. A tick in turn is 100 nanoseconds long.
A Unix timestamp, as produced by mktime() for example, is to the contrary, the number of seconds since 01/01/1970. A direct comparison is not possible. So you have to convert between the both units at first. And how to do this, is what I want to show you today, based on a […]

Simple XML serialization in C#

C# XML SerialisierungToday I want to show you how to perform a XML serialization in C#. Serialization itself, means that you convert an object to another, transportable form.
Using XML serialization, it is possible, for example, to store an object of a class in the form of an XML file and restore it later.
This can make sense if you if you want to transfer an object, for example, via HTTP or  restore an object to its state after closing and reopening an application.
For our example, I created the following class “Blog”:

public class Blog
{
public string User { get; set; }
public string Pass { get; set; }
public string Subdomain { get; set; }
public string BaseUrl { get; set; }
}

The method used to serialize is as follows:

public […]

How to change the size of a textbox in C#

I admit, the title sounds almost trivial. But on the second sight, it is not so easy to change the size of a TextBox control in C#, because a TextBox does not have the AutoSize property. For other controls you can set the AutoSize property to false and then change the height (height-property). For the TextBox control this is unfortunately not the case.
Nevertheless you can set the height of a TextBox by using a small workaround. The trick is as follows:

textBoxTest.Multiline = true;
textBoxTest.MinimumSize = new Size(150, 24);
textBoxTest.Size = new Size(150, 24);
textBoxTest.Multiline = false;

First you have to set the multiline property to true. Then you can adjust, according to your mood, the minimum-size and the size property to change the size of the TextBox. When you’re done, you set the Multiline property back to false. The TextBox maintains the set size just yet. It’s that simple
Who still wonders, why you should […]

How to search for users in Active Directory with C#

Last time I wrote about how you can reach the Active Directory search dialog in Windows 7. Today I’ll show you how to search comfortable for users in the Active Directory by using C#. The emphasis is on comfort, because there are quite a few articles on the subject in general, on the internet.
However, most of the shown methods/solutions are build exclusively around System.DirectoryServices.ActiveDirectory and the DirectorySearcher. But ever since .NET 3.5 it is also possible to search in the Active Directory much easier.
But let us come to the point. In the following example, I mostly use methods from the System.DirectoryServices.AccountManagement namespace. And here’s how:

//Create a shortcut to the appropriate Windows domain
PrincipalContext domainContext = new PrincipalContext(ContextType.Domain,
[…]

The best free .NET decompilers – the .NET Reflector alternatives

netreflectorToday I want to briefly highlight a few alternatives to Redgates .NET Reflector. Former I frequently used this tool, but since it costs money and there are good and useful free alternatives, this is no longer between my fingers.
The following parenthesis is for those who don’t know what’s meant by the term .NET Reflector/decompiler. All the other can read on below the following paragraphs.
What is a (. NET) decompiler?
.NET Reflector was the first CLI assembly browser. It can be used to inspect, navigate, search, analyze, and browse the contents of a CLI component such as an assembly and translates the binary information to a human-readable form. By default Reflector allows decompilation of CLI assemblies into C#, Visual Basic .NET, Common Intermediate Language and F# (alpha version). Reflector also includes a “Call Tree” that can be used to drill down into intermediate […]