LINQ Quantifiers Operators

LINQ Quantifiers Operators

In this article, I am going to discuss the LINQ Quantifiers Operators in C# with examples. Please read our previous article before proceeding to this article where we discussed the LINQ Aggregate Method in C# with some examples. As part of this article, we are going to discuss the following pointers in detail.

  1. What are the LINQ Quantifier Operations?
  2. Why and where we should use the Quantifier Operations?
  3. What methods are available in this category?
What are the LINQ Quantifier Operations?

We need to use the LINQ Quantifier Operators on a data source when we want to check if some or all of the elements of that data source satisfy a condition or not. That means, here we have a data source and also we have a condition. Then we need to check whether all or some of the elements of that data source satisfied the condition or not.

All the methods in quantifier operations are always going to return a Boolean value. That means if the all or some of the elements in the data source satisfy the given condition then it is going to return true else it is going to return false.

Note: The condition that we specify may be for some or all of the elements.

Examples:

We need to use the quantifier operations on the below scenarios.

  1. When we want to check whether all the employees are present on a specific day or not
  2. In a specific class of students, we need to check if any of the students having marks more than 90%
  3. When we need to check if any of the employees having the names James is present or not
What methods are available in this category?

The following three methods belong to Quantifier Operations category.

All: This specifies whether all the elements of a data source satisfy a given condition or not.

Any: This specifies whether at least one of the element of a data source satisfies the condition or not.

Contains: This method is used to check whether the data source contains a specified element or not.

Note: All of the above three methods return Boolean true or false depending on whether all or some of the elements in a data source satisfy a condition.

In the next article, I am going to discuss the LINQ All Quantifier Operator with some examples.