StockAnalyzer: Adding XML Reader to the Program

I've created a separate page for StockReader and StockAnalyzer, with a short summary of the programs. In this blog post, I'll use XML and C# dictionaries to verify that the stock names are correct for the stock records.

When feeding the stock records from the csv files, I need to verify whether the stock name I queried (the first string) matches the actual stock record that I got (the second string).

As I mentioned in my last post, I'll have three lists of valid, invalid and unknown combinations in a XML file. The program will read that file and populate corresponding dictionaries.

When the program reads a stock record, it will look for the stock names in the dictionaries.

• If it is found in the white list, that stock record can be added to the database.
• If it is found in the black list, that stock record is ignored.
• Otherwise, the program will print a recommended xml tag. The user can decide on whether to add that tag to the white or black list.

The user will edit the XML file and move combinations from the gray list to the black or white list manually.

XMLReader vs XMLDocument in C#
XMLReader is a read-only representation of the XMLDocument. The reader requires more code but is less memory consuming. I've decided to use the XML

New Class: NameChecker
The name checking will be handled in a separate class, that is called from fileParser. I'll implement it in the next post.

Mapping the Wanted Stock Name to the fetched Stock Name
In C#, there is no mapping from value to key in dictionaries. Key to value mappings are smooth. Therefore, searching for the key will be time consuming.

I'll use the dictionaries to search for the key (the fetched values). This will give a list of values that represent the wanted values (most of the cases one value).