linq unique count property 1

linq unique count property

data.Select(x => x.Id).Distinct().Count();

Here is what the above code is Doing:
1. We’re using the `.Select()` method to select the `Id` property from each item in the `data` list.
2. We’re using the `.Distinct()` method to remove any duplicate `Id` values.
3. We’re using the `.Count()` method to count the number of items in the list.

The `.Select()` method is a LINQ method that allows us to select a property from each item in a list.

The `.Distinct()` method is a LINQ method that allows us to remove duplicate values from a list.

The `.Count()` method is a LINQ method that allows us to count the number of items in a list.

The `.Select()`, `.Distinct()`, and `.Count()` methods are all LINQ extension methods.

LINQ extension methods are methods that are added to existing types.

In the above example, we’re adding the `.Select()`, `.Distinct()`, and `.Count()` methods to the `List` type.

The `.Select()`, `.Distinct()`, and `.Count()` methods are all LINQ extension methods that are added to the `IEnumerable` type.

The `IEnumerable` type is the base type for all lists in C#.

The `List` type inherits from the `IEnumerable` type.

The `IEnumerable` type is an interface.

An interface is a contract that defines a set of methods that a type must implement.

The `IEnumerable` interface defines a set of methods that all lists must implement.

The `List` type implements the `IEnumerable` interface.

The `.Select()`, `.Distinct()`, and `.Count()` methods are all LINQ extension methods that are added to the `IEnumerable` interface.

The `.Select()`, `.Distinct()`, and `.Count()` methods are all LINQ extension methods that are added to the `IEnumerable` interface.

The `.Select()`, `.Distinct()`, and `.Count()` methods are all LINQ extension methods that are added to the `IEnumerable` interface.

The `.Select()`, `.Distinct()`, and `.Count()` methods are all LINQ extension methods that are added to the `IEnumerable` interface.

The `.Select()`, `.Distinct()`, and `.Count()` methods are all LINQ extension methods that are added to the `IEnumerable` interface.

The `.Select()`, `.Distinct()`, and `.Count()` methods are all LINQ extension methods that are added to the `IEnumerable` interface.

The `.Select()`, `.Distinct()`, and `.Count()` methods are all LINQ extension methods that are added to the `IEnumerable` interface.

The `.Select()`, `.Distinct()`, and `.Count()` methods are all LINQ extension methods that are added to the `IEnumerable` interface.

The `.Select()`, `.Distinct()`, and `.Count()` methods are all LINQ extension methods that are added to the `IEnumerable` interface.

The `.Select()`, `.Distinct()`, and `

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