Quote:
System.ArgumentOutOfRangeException: Year, Month, and Day parameters describe an un-representable DateTime.
The problem is data dependent, we can't know the reason without the data.
I see 2 possibilities to help understand the problem:
1) use a debugger to see the data at faillure.
2) log the data on each call in a file, after crash, the last data is the offending one.
When you don't understand what your code is doing or why it does what it does, the answer is
debugger.
Use the debugger to see what your code is doing. It allow you to execute lines 1 by 1 and to inspect variables as it execute, it is an incredible learning tool.
Debugger - Wikipedia, the free encyclopedia[
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Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[
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The debugger is here to show you what your code is doing and your task is to compare with what it should do.
There is no magic in the debugger, it don't find bugs, it just help you to. When the code don't do what is expected, you are close to a bug.