[josha28]

How can i change the assembly in the code

Code

using (stuff);

[assembly: AssemblyTitle("System Monitor")]

but where can i change it mid code??

[Aristocles]

right click ?

[josha28]

I mean in the code itself when you run the exe the asseblys will change

[HFDone]

at the top of your code
using system;
[assembly: AssemblyTitle("test")]
namespace assembly {
...
https://msdn.microsoft.com/en-us/library/cc543591.aspx

[Cyber Parasite]

I mean in the code itself when you run the exe the asseblys will change

You cant.

[gigajew]

The only way to achieve a runtime name change is to generate the assembly in memory, compiling code on the fly and so on, or possibly recompiling an existing assembly before invoking it

[Vyxn]

I mean in the code itself when you run the exe the asseblys will change

You may search for the assembly called AssemblyChanger. I know some assembly changer used it.

[๖ۣۜDiViN3]

C# File Resource Management Library: ResourceLib
Wiki: Example

[n0$f3ratu$]

How can i change the assembly in the code

Code

using (stuff);

[assembly: AssemblyTitle("System Monitor")]

but where can i change it mid code??

You can do it using CodeDOM.