Conversion example between able and DataSet in ASP. NET

DataSet contains multiple able and constraints between DataTable.
If you do not need to map the relationship between your data, it is more efficient to directly use DataTable. If a relational query such as 1: N or N: M is required, fill in all the corresponding datatables in DataSet, and then use the relational query data.

The DataSet data source can be viewed as a database, and the DataTable is a table in the database.

Add a able to DataSet:

When the DataTable cannot be directly converted to DataSet in the project,

New
You can add new DataSet c first and then fill it in.
DataSet ds = new DataSet ();
DataTable dt = new DataTable ("MERs ");

Ds. Tables. Add (dt );

Read a DataTable in DataSet:

Dt = ds. Tables [0]; // specify 0th Tables

Dt = ds. Tables ["MERs"]; // specify a table named "Customers"