.NET - Language-Integrated Query (LINQ)
17.
How can you open the O/R Designer?
You can open the O/R Designer by adding a new LINQ to SQL Classes item to a project.
18.
The standard query operators are themselves a set of extension methods that provide the LINQ query functionality for any type that implements the IEnumerable<T> interface in Visual Basic. Is it True or False?
False, as it implements the IEnumerable(T) interface in Visual Basic and the IEnumerable<T> interface is implemented in C#.
19.
What are lambda expressions in LINQ?
A lambda expression is a function without a name that calculates and returns a single value. All lambda expressions use the lambda operator =>, which read as goes to. The left side of the lambda operator specifies the input parameters and the right side holds the expression or statement block.
20.
Before you query a DataSet object by using LINQ to DataSet, you must first populate the dataset How can you do this?
You can load the data into the dataset by using different methods, such as:
- Using the DataAdapter class
- Using LINQ to SQL
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