Some calculation is needed in current system we are working on. Thus, I had to implement Regex for few text input. Allowing only numeric and special symbol to be used, restricts all alphabetic and any other symbol . With implementation of Regex, undefined result for calculation can be avoided.
Next, I need to allow calculation result to be 0 based on given example. Therefore, I added a check box within data grid of DetailView, hence, control my calculation result. Then, functionality is altered within DetailViewModel as we are maintaining MVVM implementation. As the check box is checked, it will set the result to 0; it will be actual result otherwise.
There is still some malfunction for state of my refresh button. Other buttons would become disable to be clicked after refresh button is triggered. I shall refactor my code to fix this issue, to ensure smooth user experience. Few unit tests is coded check if refresh button acts as intended.
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