DOC-5109 added hash search examples (#414)

* DOC-5109 added hash search examples

* DOC-5109 dotnet format changes

---------

Co-authored-by: atakavci <[email protected]>

Author: andy-stark-redis

tests/Doc/HomeJsonExample.cs

@@ -86,8 +86,6 @@ public void run()
             schema
         );
         // STEP_END
-
-        // Tests for 'make_index' step.
         // REMOVE_START
         Assert.True(indexCreated);
         // REMOVE_END
@@ -98,8 +96,6 @@ public void run()
         bool user2Set = db.JSON().Set("user:2", "$", user2);
         bool user3Set = db.JSON().Set("user:3", "$", user3);
         // STEP_END
-
-        // Tests for 'add_data' step.
         // REMOVE_START
         Assert.True(user1Set);
         Assert.True(user2Set);
@@ -118,8 +114,6 @@ public void run()
         ));
         // >>> {"name":"Paul Zamir","email":"[email protected]", ...
         // STEP_END
-
-        // Tests for 'query1' step.
         // REMOVE_START
         Assert.Equal(
             "{\"name\":\"Paul Zamir\",\"email\":\"[email protected]\",\"age\":35,\"city\":\"Tel Aviv\"}",
@@ -140,8 +134,6 @@ public void run()
         ));
         // >>> London, Tel Aviv
         // STEP_END
-
-        // Tests for 'query2' step.
         // REMOVE_START
         Assert.Equal(
             "London, Tel Aviv",
@@ -166,8 +158,6 @@ public void run()
         // >>> London - 1
         // >>> Tel Aviv - 2
         // STEP_END
-
-        // Tests for 'query3' step.
         // REMOVE_START
         Assert.Equal(2, resultsList.Count);
 
@@ -181,7 +171,70 @@ public void run()
         Assert.Equal(2, testItem["count"]);
         // REMOVE_END
 
+        // STEP_START make_hash_index
+        var hashSchema = new Schema()
+            .AddTextField("name")
+            .AddTagField("city")
+            .AddNumericField("age");
+
+        bool hashIndexCreated = db.FT().Create(
+            "hash-idx:users",
+            new FTCreateParams()
+                .On(IndexDataType.HASH)
+                .Prefix("huser:"),
+            hashSchema
+        );
+        // STEP_END
+        // REMOVE_START
+        Assert.True(hashIndexCreated);
+        // REMOVE_END
 
+        // STEP_START add_hash_data
+        db.HashSet("huser:1", new HashEntry[] {
+            new("name", "Paul John"),
+            new("email", "[email protected]"),
+            new("age", 42),
+            new("city", "London")
+        });
+
+        db.HashSet("huser:2", new HashEntry[] {
+            new("name", "Eden Zamir"),
+            new("email", "[email protected]"),
+            new("age", 29),
+            new("city", "Tel Aviv")
+        });
+
+        db.HashSet("huser:3", new HashEntry[] {
+            new("name", "Paul Zamir"),
+            new("email", "[email protected]"),
+            new("age", 35),
+            new("city", "Tel Aviv")
+        });
+        // STEP_END
+
+        // STEP_START query1_hash
+        SearchResult findPaulHashResult = db.FT().Search(
+            "hash-idx:users",
+            new Query("Paul @age:[30 40]")
+        );
+
+        foreach (Document doc in findPaulHashResult.Documents)
+        {
+            Console.WriteLine(
+                $"Name: {doc["name"]}, email: {doc["email"]}, " +
+                $"age: {doc["age"]}, city:{doc["city"]}"
+            );
+        }
+        // >>> Name: Paul Zamir, email: [email protected], age: 35, ...
+        // STEP_END
+        // REMOVE_START
+        Document d = findPaulHashResult.Documents[0];
+        Assert.Equal(
+            "Name: Paul Zamir, email: [email protected], age: 35, city:Tel Aviv",
+            $"Name: {d["name"]}, email: {d["email"]}, " +
+                $"age: {d["age"]}, city:{d["city"]}"
+        );
+        // REMOVE_END
         // HIDE_START
     }
 }