dotnet · BillWagner · Jul 22, 2020 · Jul 20, 2020 · Jul 21, 2020 · Jul 21, 2020
diff --git a/docs/csharp/programming-guide/concepts/linq/functional-construction-linq-to-xml.md b/docs/csharp/programming-guide/concepts/linq/functional-construction-linq-to-xml.md
@@ -1,5 +1,6 @@
 ---
 title: "Functional Construction (LINQ to XML) (C#)"
+description: Learn how the LINQ to XML programming interface enables functional construction, the ability to create an XML tree in a single statement in C#.
 ms.date: 07/20/2015
 ms.assetid: 57a82bcf-de03-4f1c-a0c8-9a76e989d542
 ---

diff --git a/...ramming-guide/concepts/linq/functional-programming-vs-imperative-programming.md b/...ramming-guide/concepts/linq/functional-programming-vs-imperative-programming.md
@@ -1,5 +1,6 @@
 ---
 title: "Functional Programming vs. Imperative Programming (C#)"
+description: This article compares functional programming in C# with the procedural approach. Functional programming enforces immutability through pure functions.
 ms.date: 07/20/2015
 ms.assetid: 5e35c5a0-c949-422a-873b-fca6b2254f57
 ---

diff --git a/docs/csharp/programming-guide/concepts/linq/functional-transformation-of-xml.md b/docs/csharp/programming-guide/concepts/linq/functional-transformation-of-xml.md
@@ -1,5 +1,6 @@
 ---
 title: "Functional Transformation of XML (C#)"
+description: Learn how to modify XML documents using the pure functional transformation approach in C# and how that differs from a procedural approach.
 ms.date: 07/20/2015
 ms.assetid: 0ccb9251-38d7-44e3-9b84-1b5fe25e4b59
 ---

diff --git a/...ramming-guide/concepts/linq/functional-vs-procedural-programming-linq-to-xml.md b/...ramming-guide/concepts/linq/functional-vs-procedural-programming-linq-to-xml.md
@@ -1,5 +1,6 @@
 ---
 title: "Functional vs. Procedural Programming (LINQ to XML) (C#)"
+description: For processing XML, LINQ to XML supports both procedural, in-memory XML tree modification and a functional construction that uses a declarative approach.
 ms.date: 07/20/2015
 ms.assetid: fc64e39c-a487-4882-9169-da4de97917d9
 ---

diff --git a/docs/csharp/programming-guide/concepts/linq/generation-operations.md b/docs/csharp/programming-guide/concepts/linq/generation-operations.md
@@ -1,5 +1,6 @@
 ---
 title: "Generation Operations (C#)"
+description: Generation creates a new sequence of values. Learn about the standard query operator methods in LINQ in C# that perform generation.
 ms.date: 07/20/2015
 ms.assetid: 1c421b3a-5954-448c-bcac-a27798d1858f
 ---

diff --git a/docs/csharp/programming-guide/concepts/linq/grouping-data.md b/docs/csharp/programming-guide/concepts/linq/grouping-data.md
@@ -1,5 +1,6 @@
 ---
 title: "Grouping Data (C#)"
+description: Grouping puts data into groups of elements that share an attribute. Learn about the standard query operator methods in LINQ in C# that group data elements.
 ms.date: 07/20/2015
 ms.assetid: e414e9e4-343a-4e6e-858f-4a30c5e64492
 ---

diff --git a/...p/programming-guide/concepts/linq/how-to-add-custom-methods-for-linq-queries.md b/...p/programming-guide/concepts/linq/how-to-add-custom-methods-for-linq-queries.md
@@ -1,5 +1,6 @@
 ---
 title: "How to add custom methods for LINQ queries (C#)"
+description: Learn how to extend the set of methods that you can use for LINQ queries by adding extension methods to the IEnumerable<T> interface in C#.
 ms.date: 07/20/2015
 ms.assetid: 1a500f60-2e10-49fb-8b2a-d8d08e4817cb
 ---

diff --git a/docs/csharp/programming-guide/concepts/linq/how-to-build-linq-to-xml-examples.md b/docs/csharp/programming-guide/concepts/linq/how-to-build-linq-to-xml-examples.md
@@ -1,5 +1,6 @@
 ---
 title: "How to build LINQ to XML examples (C#)"
+description: Supply the appropriate using directives needed to compile C# to run the provided snippets and examples of LINQ to XML.
 ms.date: 07/20/2015
 ms.assetid: e5d18fa1-2704-48fe-a44b-1564f97c9e9c
 ---

diff --git a/.../csharp/programming-guide/concepts/linq/how-to-calculate-intermediate-values.md b/.../csharp/programming-guide/concepts/linq/how-to-calculate-intermediate-values.md
@@ -1,5 +1,6 @@
 ---
 title: "How to calculate intermediate values (C#)"
+description: This LINQ to XML example in C# shows how to calculate intermediate values that can be used in sorting, filtering, and selecting.
 ms.date: 07/20/2015
 ms.assetid: 7fd3001f-f8f9-4bce-879f-d4c7af8a04fe
 ---

diff --git a/docs/csharp/programming-guide/concepts/linq/how-to-catch-parsing-errors.md b/docs/csharp/programming-guide/concepts/linq/how-to-catch-parsing-errors.md
@@ -1,5 +1,6 @@
 ---
 title: "How to catch parsing errors (C#)"
+description: This LINQ to XML example in C# detects badly formed or invalid XML. LINQ to XML uses XmlReader, which throws an exception for badly formed or invalid XML.
 ms.date: 07/20/2015
 ms.assetid: bfb612d4-5605-48ef-8c93-915cf9d5dcfb
 ---

diff --git a/...p/programming-guide/concepts/linq/how-to-chain-axis-method-calls-linq-to-xml.md b/...p/programming-guide/concepts/linq/how-to-chain-axis-method-calls-linq-to-xml.md
@@ -1,5 +1,6 @@
 ---
 title: "How to chain axis method calls (LINQ to XML) (C#)"
+description: These LINQ to XML examples in C# demonstrate calls to two axes to find all elements of a specified name at a given depth in the tree.
 ms.date: 07/20/2015
 ms.assetid: 067e6da2-ee32-486d-803c-e611b328e39a
 ---

diff --git a/...mming-guide/concepts/linq/how-to-change-the-namespace-for-an-entire-xml-tree.md b/...mming-guide/concepts/linq/how-to-change-the-namespace-for-an-entire-xml-tree.md
@@ -1,5 +1,6 @@
 ---
 title: "How to change the namespace for an entire XML tree (C#)"
+description: Learn how to programmatically change the namespace for an element or an attribute in LINQ to XML in C#.
 ms.date: 07/20/2015
 ms.assetid: 1584ff3b-c77d-4241-ab62-80adfb7bfc1b
 ---

diff --git a/...mming-guide/concepts/linq/how-to-combine-and-compare-string-collections-linq.md b/...mming-guide/concepts/linq/how-to-combine-and-compare-string-collections-linq.md
@@ -1,5 +1,6 @@
 ---
 title: "How to combine and compare string collections (LINQ) (C#)"
+description: This example merges files that contain lines of text. Learn how to do a simple concatenation, a union, and an intersection on the sets of lines in LINQ in C#.
 ms.date: 07/20/2015
 ms.assetid: 25926e5b-fde2-4dc1-86a0-16ead7aa13d2
 ---

diff --git a/...ing-guide/concepts/linq/how-to-combine-linq-queries-with-regular-expressions.md b/...ing-guide/concepts/linq/how-to-combine-linq-queries-with-regular-expressions.md
@@ -1,5 +1,6 @@
 ---
 title: "How to combine LINQ queries with regular expressions (C#)"
+description: This example creates a regular expression for matching in text strings by using the Regex class in C#.
 ms.date: 07/20/2015
 ms.assetid: 6b003b65-20a4-4ca2-929e-2ee3f215aecc
 ---

diff --git a/...gramming-guide/concepts/linq/how-to-compare-the-contents-of-two-folders-linq.md b/...gramming-guide/concepts/linq/how-to-compare-the-contents-of-two-folders-linq.md
@@ -1,5 +1,6 @@
 ---
 title: "How to compare the contents of two folders (LINQ) (C#)"
+description: This example demonstrates three ways to compare file listings by using LINQ queries in C#. Adapt these techniques to compare sequences of objects of any type.
 ms.date: 07/20/2015
 ms.assetid: c7c4870e-c500-4de3-afa4-2c8e07f510e6
 ---

diff --git a/...ing-guide/concepts/linq/how-to-compute-column-values-in-a-csv-text-file-linq.md b/...ing-guide/concepts/linq/how-to-compute-column-values-in-a-csv-text-file-linq.md
@@ -1,5 +1,6 @@
 ---
 title: "How to compute column values in a CSV text file (LINQ) (C#)"
+description: This example shows how to perform aggregate computations using LINQ in C#, such as Sum, Average, Min, and Max, on the columns of a .csv file.
 ms.date: 07/20/2015
 ms.assetid: 4747f37a-a198-4df2-8efe-5b0731e0ea27
 ---

diff --git a/...rogramming-guide/concepts/linq/how-to-control-namespace-prefixes-linq-to-xml.md b/...rogramming-guide/concepts/linq/how-to-control-namespace-prefixes-linq-to-xml.md
@@ -1,5 +1,6 @@
 ---
 title: "How to control namespace prefixes (C#) (LINQ to XML)"
+description: Learn how to control namespace prefixes when serializing an XML tree in LINQ to XML in C#. Some situations require control of namespace prefixes.
 ms.date: 07/20/2015
 ms.assetid: 64de5186-b81a-4ddd-8327-8693df59a01b
 ---

diff --git a/...harp/programming-guide/concepts/linq/how-to-control-the-type-of-a-projection.md b/...harp/programming-guide/concepts/linq/how-to-control-the-type-of-a-projection.md
@@ -1,5 +1,6 @@
 ---
 title: "How to control the type of a projection (C#)"
+description: Learn about how to control the type of a projection in LINQ in C# to create collections of types other than IEnumerable<T> of XElement.
 ms.date: 07/20/2015
 ms.assetid: e4db6b7e-4cc9-4c8f-af85-94acf32aa348
 ---

diff --git a/...ming-guide/concepts/linq/how-to-count-occurrences-of-a-word-in-a-string-linq.md b/...ming-guide/concepts/linq/how-to-count-occurrences-of-a-word-in-a-string-linq.md
@@ -1,5 +1,6 @@
 ---
 title: "How to count occurrences of a word in a string (LINQ) (C#)"
+description: This example uses a LINQ query in C# to count the occurrences of a specified word in a string. It uses the Split method to create an array of words.
 ms.date: 07/20/2015
 ms.assetid: f8e6f546-7c14-4aa1-8a75-e8d09f3b8ccd
 ---

diff --git a/...ing-guide/concepts/linq/how-to-create-a-document-with-namespaces-linq-to-xml.md b/...ing-guide/concepts/linq/how-to-create-a-document-with-namespaces-linq-to-xml.md
@@ -1,5 +1,6 @@
 ---
 title: "How to create a document with namespaces (C#) (LINQ to XML)"
+description: Learn how to create a document with a namespace in LINQ to XML in C# by using an XNamespace object to combine the namespace with the local name.
 ms.date: 07/20/2015
 ms.assetid: 37e63c57-f86d-47ac-88a7-2c2d107def30
 ---