What is the { get; set; } syntax in C#?
It’s a so-called auto property, and is essentially a shorthand for the following (similar code will be generated by the compiler):
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What is a PDB file?
A PDB file contains information for the debugger to work with. There’s less information in a Release build than in a Debug build anyway. But if you want it to not be generated at all, go to your project’s Build properties, select the Release configuration, click on “Advanced…” and under “Debug Info” pick “None”.
What is a NullReferenceException, and how do I fix it?
What is the cause? Bottom Line You are trying to use something that is null (or Nothing in VB.NET). This means you either set it to null, or you never set it to anything at all. Like anything else, null gets passed around. If it is null in method “A”, it could be that method “B” passed a null to method “A”. null can have different meanings: Object variables … Read more
How can I convert String to Int?
Try this: or better yet: Also, since Int32.TryParse returns a bool you can use its return value to make decisions about the results of the parsing attempt: If you are curious, the difference between Parse and TryParse is best summed up like this: The TryParse method is like the Parse method, except the TryParse method does not throw an exception if the conversion … Read more
C# HttpClient An existing connection was forcibly closed by the remote host
I don’t see in your code sample where you are setting the value of _baseUrl, but I’m assuming that is being done somewhere. I’m also assuming that since this related to payments, the URL is HTTPS. If the remote host has disabled TLS 1.0 and your connection is coming in as TLS 1.0, it could … Read more
An existing connection was forcibly closed by the remote host
This generally means that the remote side closed the connection (usually by sending a TCP/IP RST packet). If you’re working with a third-party application, the likely causes are: You are sending malformed data to the application (which could include sending an HTTPS request to an HTTP server) The network link between the client and server … Read more
How do I get a random YouTube video with the YouTube API?
There appears to be no way to do this, however there are ways to approximate what you’re looking for. See here for ideas. The basic ideas from those pages are to use the most recent uploads feed (if you don’t care about when something was uploaded) or simply get a dump of ALL youtube videos … Read more
What is a NullReferenceException, and how do I fix it?
What is the cause? Bottom Line You are trying to use something that is null (or Nothing in VB.NET). This means you either set it to null, or you never set it to anything at all. Like anything else, null gets passed around. If it is null in method “A”, it could be that method “B” passed a null to method “A”. null can have different meanings: Object variables … Read more
Why has the int32 type a maximum value of 2³¹ − 1? [duplicate]
Possible Duplicate:What is “2’s Complement”? I know int32 has a length of 32 bits (4 bytes). I assume it has 2³² values but as half of them must be under zero, I guess it has something to do with this. I would like to know why exactly int32 has max. positive number 2³¹ − 1.
How do I generate a random int number?
The Random class is used to create random numbers. (Pseudo-random that is of course.). Example: If you are going to create more than one random number, you should keep the Random instance and reuse it. If you create new instances too close in time, they will produce the same series of random numbers as the random generator is seeded from … Read more