So, like any stackoverflow member, I'm trying to get my reputation up, so I can participate in the community more. But people seem to downvote anything I ask, even if I go into extreme detail in my simple questions. What can I do to improve my questions? Example here (-1 votes).
I'm having a hard time seeing how this is an example of "excessive downvoting for no apparent (or explained) reason". You received only one downvote, and the (presumed) downvoter posted a comment making it very clear what the reason was -- and you responded to that comment.
I'm not saying I necessarily agree with the reason. Asad's explanation for why code wasn't necessary may be a valid one. I'm not familiar enough with the subject to have an opinion either way. But whether his reason was right or wrong is beside the point, which is that he did explain the reason. There's a big difference between "no apparent (or explained) reason" and a reason you disagree with.
Sure, the nice thing for him to do would be to retract the downvote now that you've improved the question in response to his comment, but that's at his discretion. Maybe he hasn't come back to the question since commenting and downvoting. Or maybe he feels that the question deserves the downvote anyway, because the correction you made should have been done in the first place.
Personally I think that if the OP either improves the post in response to the criticism, as you did, or provides a valid explanation for why the criticism doesn't apply, as Asad is suggesting, that should earn him a retraction of the downvote. Also, how new the user is should be considered. The argument that something "should have been done in the first place" is more fair to apply to an experienced user, and particularly harsh if applied to someone on his first day. If I were him, I'd retract the downvote, but it's his downvote, so it's his call.
"Excessive downvoting" and "Example here (-1 votes)" contradict each other. One downvote is not "excessive downvoting". If you consider "1 downvote" as "excessive", SO probably isn't the site for you, because you're far too sensitive to survive there. :-)
With that being said, at this time you have posted 10 questions on StackOverflow, with only three showing negative reputation:
The one you linked above, which has a -1 (not excessive downvotes).
Console window showing in a Windows Forms Application, which is a very poor, two sentence question which is vague in content (and which I happened to vote to close, BTW (but did not downvote at that time, although I did later when you failed to improve it). Here's the entire question you asked:
So for some reason the console shows alongside my windows form. How can I close the console window?
No code, no information about your project, nothing else. Just these two sentences. It currently has a total rep of -2 (+1, -3); again, not excessive. (I think you were lucky to only get three downvotes.)
How do I hide the console window in my program?, which was downvoted for poor content and closed as a duplicate (of the question I linked in #2). The entire textual content of the question:
So I wrote a simple C# program in notepad, that only contains a single form. The console window is automatically shown alongside the form. How would I go about hiding the console?
Here is my code so far:
(Followed by 8 lines of code that do nothing to illustrate the problem you're trying to solve.) No information about your application, no clearer explanation of the problem than the one it duplicated (except now it's three short sentences instead of two), no details added by the code posted. No improvement.
When you were informed that you should edit your previous question instead, your reply was that it was closed. I posted a comment explaining what you should do instead, and you argued (and wrongfully accused me of downvoting, which I had not done at that time - again, I did later when you failed to improve the question). Currently, it stands at -5 (+1, -6). Again, not "excessive"; you simply repeated the same thing you did in #2, but openly refused to improve the question when asked to do so.
There is no "excessive downvoting" here, as far as I can see. You may have gotten one downvote on the question you linked that you shouldn't (although that's up to the person who placed that downvote to decide), but the others aren't excessive.
(Just as an aside: Voting at all of the StackExchange sites is anonymous, so there is no requirement to offer an explanation, although a lot of people (including me) usually do so. Excessive downvoting is typically caught if it's done by a single person automatically; you can search here for "serial downvoting" for details regarding how that works. If you're getting lots of downvotes on your questions, and the system isn't catching them as serial downvoting, the problem is the content of your questions.)
It looks like you had no examples of what you had tried to solve the problem initially, therefore you got downvoted. Unfortunately, not everyone comes back to remove their downvote, even if you edit the post.
My advice is to keep up quality posts with examples of what you tried to solve the issue yourself. We want to make sure you're thinking constructively and not just leeching for an answer. Also, make sure you always follow guidelines outlined in the Help Pages to avoid downvotes and closures.
Take your time and perfect your question before posting it. There's no need to rush!