It has it's disadvantages I'm definitely looked at as an old fuddy duddy because of my language choices. I'm pretty locked in, so if .net dies I'm gonna screwed while I come up to speed on the next big thing.
But it has its advantages too. I'm able to go deeper on a bunch of different parts of the stack than I would if I were having to jump around more. Web, desktop, services, database, mobile and even vba in Excel. There's no way I could be as proficient across the stack as am if I had to be proficient in different technologies. And it's allowed me to feel pretty confident addresssing any business problems as long as it's on the right stack.
I'm on a bit of an unusual track into software engineering, having started in finance and first teaching myself to code via VBA and SQL. That coding led to me getting a second degree in computer science, which I'll be finishing this year (and I now know way too much about VBA).
All that of that preamble to say that I've had a ton of experience with SQL Server, VBA, Excel in my old life. I think I could be a pretty good candidate to fully immerse myself in the .NET stack. However, my school doesn't touch much on the .NET technologies, focusing more on JavaScript, Python, and C++.
Would it make sense to focus on C# and move on from there? Or there other things I should know well? Do you use much PowerShell? Javascript?
Thanks! Sorry if this was a bit long.
But I'd mainly focus on JavaScript/TypeScript. And if you're about to graduate then focus really heavily on react or angular. Microsoft shops are drowning in .net talent/experience but are starving for good front end devs with deep angular or react experience.
And I wouldn't bother with powershell at all, unless you have wanted to move away from development and towards infrastructure.
Now I primarily use those tools on personal projects, and spend most of my day consulting on HOW to develop a project, and only able to get my hands dirty a couple of hours each week. The rest of the time is spent with management "architecting" solutions.
I think some of it may be that each job I've taken has forced me to change language / platform multiple times. I'm an iOS, android, C++, C, Java, and python developer. All on production level code. Never an expert of any.