What is "datatable"

Datatable no . NET

A Datatable is a class . NET that represents a data table in memory. Unlike other programming languages and platforms, the Datatable of . NET is not a GUI control, but rather a representation of an SQL table directly accessible in code and a data source for other controls.

To DataTable may exist as part of a DataSet, that represents a relational data repository in memory. In this context, they can be connected through class instances DataRelation, and restricted by ForeignKeyConstraint or UniqueConstraint.

To DataTable has a set of instances DataColumn, describing your schema. Data is stored in the instances DataRow.

To DataTable can be sorted and filtered without changing the data by attaching it to a DataView. The classified and filtered lines are then accessed as instances of the class DataRowView.