What are benefits of using LINQ in Dataset?

The main motive to use LINQ in a dataset is to retrieve strongly typed queries in a dataset. LINQ is used when we want to combine values from two different datasets, or we want a unique value from the dataset.

You can use SQL queries to populate the dataset, but you cannot use SQL queries to retrieve values. If you want to retrieve particular values, you have to use ADO.NET functionalities. In the case of LINQ, it gives a clearer way of querying the dataset. LINQ also provides additional features as compared with ADO.NET.