diff --git a/20240911/ConsoleApp1/.vs/ConsoleApp1/FileContentIndex/7a2d9f98-1336-4f92-9ee5-6c23efe61eaa.vsidx b/20240911/ConsoleApp1/.vs/ConsoleApp1/FileContentIndex/7a2d9f98-1336-4f92-9ee5-6c23efe61eaa.vsidx
new file mode 100644
index 0000000..4d360af
Binary files /dev/null and b/20240911/ConsoleApp1/.vs/ConsoleApp1/FileContentIndex/7a2d9f98-1336-4f92-9ee5-6c23efe61eaa.vsidx differ
diff --git a/20240911/ConsoleApp1/.vs/ConsoleApp1/v17/.suo b/20240911/ConsoleApp1/.vs/ConsoleApp1/v17/.suo
index 1eaf110..1705d70 100644
Binary files a/20240911/ConsoleApp1/.vs/ConsoleApp1/v17/.suo and b/20240911/ConsoleApp1/.vs/ConsoleApp1/v17/.suo differ
diff --git a/20240911/ConsoleApp1/.vs/ConsoleApp1/v17/DocumentLayout.backup.json b/20240911/ConsoleApp1/.vs/ConsoleApp1/v17/DocumentLayout.backup.json
index 1837451..1ac5830 100644
--- a/20240911/ConsoleApp1/.vs/ConsoleApp1/v17/DocumentLayout.backup.json
+++ b/20240911/ConsoleApp1/.vs/ConsoleApp1/v17/DocumentLayout.backup.json
@@ -1,9 +1,9 @@
 {
   "Version": 1,
-  "WorkspaceRootPath": "C:\\Users\\szabomarton\\Desktop\\C#\\ProgaOra\\20240911\\ConsoleApp1\\",
+  "WorkspaceRootPath": "C:\\Users\\szabomarton\\Desktop\\ProgaOra\\20240911\\ConsoleApp1\\",
   "Documents": [
     {
-      "AbsoluteMoniker": "D:0:0:{739297EA-E8FF-4D27-9F53-10E374FBB642}|ConsoleApp1\\ConsoleApp1.csproj|c:\\users\\szabomarton\\desktop\\c#\\progaora\\20240911\\consoleapp1\\consoleapp1\\program.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}",
+      "AbsoluteMoniker": "D:0:0:{739297EA-E8FF-4D27-9F53-10E374FBB642}|ConsoleApp1\\ConsoleApp1.csproj|c:\\users\\szabomarton\\desktop\\progaora\\20240911\\consoleapp1\\consoleapp1\\program.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}",
       "RelativeMoniker": "D:0:0:{739297EA-E8FF-4D27-9F53-10E374FBB642}|ConsoleApp1\\ConsoleApp1.csproj|solutionrelative:consoleapp1\\program.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}"
     }
   ],
@@ -20,11 +20,11 @@
               "$type": "Document",
               "DocumentIndex": 0,
               "Title": "Program.cs",
-              "DocumentMoniker": "C:\\Users\\szabomarton\\Desktop\\C#\\ProgaOra\\20240911\\ConsoleApp1\\ConsoleApp1\\Program.cs",
+              "DocumentMoniker": "C:\\Users\\szabomarton\\Desktop\\ProgaOra\\20240911\\ConsoleApp1\\ConsoleApp1\\Program.cs",
               "RelativeDocumentMoniker": "ConsoleApp1\\Program.cs",
-              "ToolTip": "C:\\Users\\szabomarton\\Desktop\\C#\\ProgaOra\\20240911\\ConsoleApp1\\ConsoleApp1\\Program.cs",
+              "ToolTip": "C:\\Users\\szabomarton\\Desktop\\ProgaOra\\20240911\\ConsoleApp1\\ConsoleApp1\\Program.cs",
               "RelativeToolTip": "ConsoleApp1\\Program.cs",
-              "ViewState": "AgIAAAMAAAAAAAAAAAAQwBwAAAAoAAAAAAAAAA==",
+              "ViewState": "AgIAACEAAAAAAAAAAAAkwCQAAAAiAAAAAAAAAA==",
               "Icon": "ae27a6b0-e345-4288-96df-5eaf394ee369.000738|",
               "WhenOpened": "2024-09-11T10:02:46.053Z",
               "EditorCaption": ""
diff --git a/20240911/ConsoleApp1/.vs/ConsoleApp1/v17/DocumentLayout.json b/20240911/ConsoleApp1/.vs/ConsoleApp1/v17/DocumentLayout.json
index b88fc17..1ac5830 100644
--- a/20240911/ConsoleApp1/.vs/ConsoleApp1/v17/DocumentLayout.json
+++ b/20240911/ConsoleApp1/.vs/ConsoleApp1/v17/DocumentLayout.json
@@ -1,9 +1,9 @@
 {
   "Version": 1,
-  "WorkspaceRootPath": "C:\\Users\\szabomarton\\Desktop\\C#\\ProgaOra\\20240911\\ConsoleApp1\\",
+  "WorkspaceRootPath": "C:\\Users\\szabomarton\\Desktop\\ProgaOra\\20240911\\ConsoleApp1\\",
   "Documents": [
     {
-      "AbsoluteMoniker": "D:0:0:{739297EA-E8FF-4D27-9F53-10E374FBB642}|ConsoleApp1\\ConsoleApp1.csproj|c:\\users\\szabomarton\\desktop\\c#\\progaora\\20240911\\consoleapp1\\consoleapp1\\program.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}",
+      "AbsoluteMoniker": "D:0:0:{739297EA-E8FF-4D27-9F53-10E374FBB642}|ConsoleApp1\\ConsoleApp1.csproj|c:\\users\\szabomarton\\desktop\\progaora\\20240911\\consoleapp1\\consoleapp1\\program.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}",
       "RelativeMoniker": "D:0:0:{739297EA-E8FF-4D27-9F53-10E374FBB642}|ConsoleApp1\\ConsoleApp1.csproj|solutionrelative:consoleapp1\\program.cs||{A6C744A8-0E4A-4FC6-886A-064283054674}"
     }
   ],
@@ -20,11 +20,11 @@
               "$type": "Document",
               "DocumentIndex": 0,
               "Title": "Program.cs",
-              "DocumentMoniker": "C:\\Users\\szabomarton\\Desktop\\C#\\ProgaOra\\20240911\\ConsoleApp1\\ConsoleApp1\\Program.cs",
+              "DocumentMoniker": "C:\\Users\\szabomarton\\Desktop\\ProgaOra\\20240911\\ConsoleApp1\\ConsoleApp1\\Program.cs",
               "RelativeDocumentMoniker": "ConsoleApp1\\Program.cs",
-              "ToolTip": "C:\\Users\\szabomarton\\Desktop\\C#\\ProgaOra\\20240911\\ConsoleApp1\\ConsoleApp1\\Program.cs",
+              "ToolTip": "C:\\Users\\szabomarton\\Desktop\\ProgaOra\\20240911\\ConsoleApp1\\ConsoleApp1\\Program.cs",
               "RelativeToolTip": "ConsoleApp1\\Program.cs",
-              "ViewState": "AgIAABQAAAAAAAAAAAAgwC4AAAAoAAAAAAAAAA==",
+              "ViewState": "AgIAACEAAAAAAAAAAAAkwCQAAAAiAAAAAAAAAA==",
               "Icon": "ae27a6b0-e345-4288-96df-5eaf394ee369.000738|",
               "WhenOpened": "2024-09-11T10:02:46.053Z",
               "EditorCaption": ""
diff --git a/20240911/ConsoleApp1/ConsoleApp1/Program.cs b/20240911/ConsoleApp1/ConsoleApp1/Program.cs
index a4d3990..845ad00 100644
--- a/20240911/ConsoleApp1/ConsoleApp1/Program.cs
+++ b/20240911/ConsoleApp1/ConsoleApp1/Program.cs
@@ -13,16 +13,42 @@ namespace ConsoleApp1
             public int X { get; set; }
             public int Y { get; set; }
         }
+
+        struct Betuk
+        {
+            public char X { get; set; }
+            public char Y { get; set; }
+        }
         static void Main(string[] args)
         {
             //Pelda1();
-            Pelda2();
+            //Pelda2();
+            Pelda3();
 
             Console.ReadLine();
             
 
         }
 
+        static void Pelda3()
+        {
+            var elemek = new List<Betuk>
+            {
+                new Betuk { X = 'x', Y = 'c' },
+                new Betuk { X = 'b', Y = 'c' },
+                new Betuk { X = 'h', Y = 'c' },
+                new Betuk { X = 'g', Y = 'c' },
+
+            };
+
+            var eredmeny = from elem in elemek orderby elem.X ascending select elem.X;
+
+            foreach (var item in eredmeny)
+            {
+                Console.WriteLine(item);
+            }
+        }
+
         static void Pelda2()
         {
             var elemek = new List<Koordinatak>
diff --git a/20240911/ConsoleApp1/ConsoleApp1/bin/Debug/ConsoleApp1.exe b/20240911/ConsoleApp1/ConsoleApp1/bin/Debug/ConsoleApp1.exe
index f70433c..70f9681 100644
Binary files a/20240911/ConsoleApp1/ConsoleApp1/bin/Debug/ConsoleApp1.exe and b/20240911/ConsoleApp1/ConsoleApp1/bin/Debug/ConsoleApp1.exe differ
diff --git a/20240911/ConsoleApp1/ConsoleApp1/bin/Debug/ConsoleApp1.pdb b/20240911/ConsoleApp1/ConsoleApp1/bin/Debug/ConsoleApp1.pdb
index 1ef0417..4ae0bac 100644
Binary files a/20240911/ConsoleApp1/ConsoleApp1/bin/Debug/ConsoleApp1.pdb and b/20240911/ConsoleApp1/ConsoleApp1/bin/Debug/ConsoleApp1.pdb differ
diff --git a/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.FileListAbsolute.txt b/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.FileListAbsolute.txt
index f610734..a942856 100644
--- a/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.FileListAbsolute.txt
+++ b/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.csproj.FileListAbsolute.txt
@@ -5,3 +5,10 @@ C:\Users\szabomarton\Desktop\C#\ProgaOra\20240911\ConsoleApp1\ConsoleApp1\bin\De
 C:\Users\szabomarton\Desktop\C#\ProgaOra\20240911\ConsoleApp1\ConsoleApp1\bin\Debug\ConsoleApp1.pdb
 C:\Users\szabomarton\Desktop\C#\ProgaOra\20240911\ConsoleApp1\ConsoleApp1\obj\Debug\ConsoleApp1.exe
 C:\Users\szabomarton\Desktop\C#\ProgaOra\20240911\ConsoleApp1\ConsoleApp1\obj\Debug\ConsoleApp1.pdb
+C:\Users\szabomarton\Desktop\ProgaOra\20240911\ConsoleApp1\ConsoleApp1\bin\Debug\ConsoleApp1.exe.config
+C:\Users\szabomarton\Desktop\ProgaOra\20240911\ConsoleApp1\ConsoleApp1\bin\Debug\ConsoleApp1.exe
+C:\Users\szabomarton\Desktop\ProgaOra\20240911\ConsoleApp1\ConsoleApp1\bin\Debug\ConsoleApp1.pdb
+C:\Users\szabomarton\Desktop\ProgaOra\20240911\ConsoleApp1\ConsoleApp1\obj\Debug\ConsoleApp1.csproj.AssemblyReference.cache
+C:\Users\szabomarton\Desktop\ProgaOra\20240911\ConsoleApp1\ConsoleApp1\obj\Debug\ConsoleApp1.csproj.CoreCompileInputs.cache
+C:\Users\szabomarton\Desktop\ProgaOra\20240911\ConsoleApp1\ConsoleApp1\obj\Debug\ConsoleApp1.exe
+C:\Users\szabomarton\Desktop\ProgaOra\20240911\ConsoleApp1\ConsoleApp1\obj\Debug\ConsoleApp1.pdb
diff --git a/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.exe b/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.exe
index f70433c..70f9681 100644
Binary files a/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.exe and b/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.exe differ
diff --git a/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.pdb b/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.pdb
index 1ef0417..4ae0bac 100644
Binary files a/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.pdb and b/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/ConsoleApp1.pdb differ
diff --git a/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache b/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache
index 9bf810b..4ec6070 100644
Binary files a/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache and b/20240911/ConsoleApp1/ConsoleApp1/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache differ
diff --git a/linq_anyag b/linq_anyag
index adc6715..a428da8 100644
--- a/linq_anyag
+++ b/linq_anyag
@@ -10,4 +10,11 @@ A linq szintaxisai:
 				select elem.x;
 
 
+A sql utasítások közül a group by is használható.
+
+Mint látható a rendezést az orderby kulcsszó valósítja meg,
+amit a tulajdonság neve követ, ami alapján rendezni akarunk.
+Ezután vagy az ascending, vagy a descending kulcsszónak kell következnie attól függően, hogy növekvő, vagy csökkenő sorrendben szeretnénk az adatokat kiírni. A lambda szintaxis esetén az OrderBy és az OrderByDescendinget alkalmazzuk.
+
+Csoportosítás (good bye)