How do I programmatically get the GUID of an application in C# with .NET?

Nathan_6062 0
Viewed 122421

I need to access the assembly of my project in C#.

I can see the GUID in the 'Assembly Information' dialog in under project properties, and at the moment I have just copied it to a const in the code. The GUID will never change, so this is not that bad of a solution, but it would be nice to access it directly. Is there a way to do this?

.net c#
8 Answers

Try the following code. The value you are looking for is stored on a GuidAttribute instance attached to the Assembly

using System.Runtime.InteropServices;

static void Main(string[] args)
{
    var assembly = typeof(Program).Assembly;
    var attribute = (GuidAttribute)assembly.GetCustomAttributes(typeof(GuidAttribute),true)[0];
    var id = attribute.Value;
    Console.WriteLine(id);
}
JaredPar_232830

Or, just as easy:

string assyGuid = Assembly.GetExecutingAssembly().GetCustomAttribute<GuidAttribute>().Value.ToUpper();

It works for me...

Admin1

You should be able to read the GUID attribute of the assembly via reflection. This will get the GUID for the current assembly:

Assembly asm = Assembly.GetExecutingAssembly();
object[] attribs = asm.GetCustomAttributes(typeof(GuidAttribute), true);
var guidAttr = (GuidAttribute) attribs[0];
Console.WriteLine(guidAttr.Value);

You can replace the GuidAttribute with other attributes as well, if you want to read things like AssemblyTitle, AssemblyVersion, etc.

You can also load another assembly (Assembly.LoadFrom and all) instead of getting the current assembly - if you need to read these attributes of external assemblies (for example, when loading a plugin).

user_459560

There wasn't any luck here with the other answers, but I managed to work it out with this nice one-liner:

((GuidAttribute)(AppDomain.CurrentDomain.DomainManager.EntryAssembly).GetCustomAttributes(typeof(GuidAttribute), true)[0]).Value
user_1050280

Use:

 string AssemblyID = Assembly.GetEntryAssembly().GetCustomAttribute<GuidAttribute>().Value;

Or in VB.NET:

  Dim AssemblyID As String = Assembly.GetEntryAssembly.GetCustomAttribute(Of GuidAttribute).Value
user_7631410
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