Update IIS Website settings Programmatically

Question

Programmatically I created the Website in IIS using the C# programming.

I want to update the created site following information

1. Replace the published files in Virtual directory.

2. IP Address.

3. Port Number.

4. AppPool Name.

5. AppPool Identity User Name.

6. AppPool Identity Password.

7. Runtime Version.

8. ManagedPipline Mode.

Please Help on this its very urgent task for me to complete.