I want to add a new column to my dataset without affecting the underlying database. That new column will be updated from my WinForm. How to do changes (add column, do updates, etc) on a dataset without affecting the database?
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I want to add a new column to my dataset without affecting the underlying database. That new column will be updated from my WinForm. How to do changes (add column, do updates, etc) on a dataset without affecting the database?
They don’t affect the underlying data source at all. The DataSet is an in-memory representation of the data that you queried from the underlying data source. Any changes to the data in the data set are not persisted back to the database until you pass it to a data adapter to update the data.
The data adapter cannot change the structure given changes to the structure of the dataset (more or less columns, types of columns, etc, etc), so you don’t have to be worried about changes to the structure, unless you are changing the names of columns or the types, in which case, the data adapter might have trouble mapping the data back to the data source.