why doesn't my application work? in csharp

Debugging a non-working application can be a frustrating experience. However, there are a few steps that can be taken to help identify the cause of the problem.

1. Use exceptions to identify the problem: Whenever an exception is thrown, the program stops and prints a message indicating what went wrong. Exceptions can be caught and handled accordingly to prevent the program from crashing.

main.cs
try 
{
    // code that may throw an exception
}
catch (Exception ex)
{
    Console.WriteLine("Something went wrong: " + ex.Message);
}
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2. Print a stack trace: A stack trace is a report that shows the sequence of functions or methods that were called before the program crashed. This gives an indication of where the problem may be located.

main.cs
try 
{
    // code that may throw an exception
}
catch (Exception ex)
{
    Console.WriteLine("Something went wrong: " + ex.StackTrace);
}
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3. Use breakpoints: A breakpoint is a marker in the code that tells the program to stop executing at a particular point. This allows the developer to inspect variables and see what the program is doing at that specific moment.

main.cs
// set breakpoint on this line
int result = someFunction(someParameter);
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By using exceptions, stack trace, and breakpoints, it should be possible to identify the root cause of the problem and fix it.