How to compare two table contents?
Our database is constantly updated (input data) from another DB, and
sometimes it crashes our ASP.NET applications. My boss told me to write a DB
utility app to check DB and make sure all apps are still running.
The first step of few checks is to compare current DB tables with
yesterday’s tables. I store yesterday’s tables at a XML file (DB is
maintained by another guy, and certainly they don’t want me to make back copy
for few tables in DB everyday).
I thought it’s trivial, and just do loop and compare two XML DOM
(XmlDocument) objects and make a new one. But the algorithm is more complex
than I thought. The new rows can be inserted or deleted based on primary key.
So, my question is: Is there a sample code to compare two tables (either
DataTable in DataSet, or XmlDocument)?
Another question is: Can I set color for individual cell in DataGrid UI,
because I want to use different color to show new, deleted or modified field
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