A Dataset is a memory-based data representation that can be utilised for a wide range of data-related applications. LINQ to Dataset, as one of the LINQ to ADO.NET technologies, makes it easier to run queries on data in a Dataset and increases productivity.

Conducting a LINQ Query on a dataset is referred to as LINQ to DATASET. Because it is constructed with a disconnected architecture, the dataset is the most extensively used element in ADO.NET, yet it has restricted querying capabilities. The LINQ to Dataset feature allows us to write more complex queries on a dataset based on our needs.

The work of querying has been simplified for developers thanks to LINQ to Dataset. They don't have to write queries in a specific query language; instead, they can use a programming language to do it. LINQ to Dataset can also be used to query data that has been consolidated from many sources. LINQ to SQL and LINQ to XML for collecting information from in-memory collections does not require any LINQ providers.

Dataset Querying using LinQ to Dataset

Before you can use LINQ to Dataset to query a Dataset, you must first load data into it, which you may do with the DataAdapter class or with LINQ to SQL. Query formulation with LINQ to Dataset is similar to query formulation with LINQ, and other LINQ enabled data sources.

We'll provide an example to demonstrate how to utilise LINQ to Dataset. To do so, you'll need to establish a new web app, connect to SQL Server, and use LINQ to write queries on the Dataset object to show the data in a grid view.

First, you will build a new database table called "EmployeeDetails," for which you need to run the best available data and enter some fictitious data to show in the application.

Now you'll establish a new web app by going to File->New->Select Project, as seen below.

When you pick the new project, a new window will appear, instructing us to establish a new software platform by selecting an empty asp.net web application, giving it the name "LINQ to DataSet", and clicking "OK."

Now you'll add a new web page to the project by right-clicking on it, selecting Add-> New Item->Select Web Form->naming it "Default.aspx" and clicking the "OK" button. This will add a page to the application.

Now go to the Default.aspx page and paste the code there.

In the preceding example, you have used the Dataset object and wrote a LINQ query on it to retrieve information from the dataset where EmpName ends in "a." Now start the application.

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