Which .Net method of the DataTable object is used to filter a table by a condition?

Which .Net method of the DataTable object is used to filter a table by a condition?

• A. Filter
• B. Query
• C. Select
• D. ApplyFilter

Answer: (C)

The method used to filter a DataTable by a condition is the Select method. This method allows users to specify a selection criteria in the form of a string expression, which describes the condition that rows must fulfill to be included in the result set. For example, if you have a DataTable representing a collection of records, you might want to retrieve only those rows where a certain column meets a specific value or condition, such as retrieving all employees in a certain department. The Select method would allow you to create a query that filters the table based on that condition, returning an array of DataRow objects that match the criteria. While other terms provided might sound relevant, they do not specifically apply to the .NET DataTable object as filtering methods. For instance, 'Filter' and 'ApplyFilter' are not valid methods associated with the DataTable class, and 'Query' is too general and does not refer to a specific method within this context. Hence, the Select method is the correct choice for filtering a DataTable based on specified conditions.

The method used to filter a DataTable by a condition is the Select method. This method allows users to specify a selection criteria in the form of a string expression, which describes the condition that rows must fulfill to be included in the result set.

For example, if you have a DataTable representing a collection of records, you might want to retrieve only those rows where a certain column meets a specific value or condition, such as retrieving all employees in a certain department. The Select method would allow you to create a query that filters the table based on that condition, returning an array of DataRow objects that match the criteria.

While other terms provided might sound relevant, they do not specifically apply to the .NET DataTable object as filtering methods. For instance, 'Filter' and 'ApplyFilter' are not valid methods associated with the DataTable class, and 'Query' is too general and does not refer to a specific method within this context. Hence, the Select method is the correct choice for filtering a DataTable based on specified conditions.