Update F# projects to net10.0 and use raw string literals in C#

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

Author: Copilot

snippets/csharp/System.Collections.Generic/DictionaryTKey,TValue/System.Collections.IDictionary.Contains/source.cs

@@ -25,7 +25,7 @@ public static void Main()
         if (!openWith.Contains("ht"))
         {
             openWith.Add("ht", "hypertrm.exe");
-            Console.WriteLine($"Value added for key = \"ht\": {openWith["ht"]}");
+            Console.WriteLine($"""Value added for key = "ht": {openWith["ht"]}""");
         }
 
         // IDictionary.Contains returns false if the wrong data

snippets/csharp/System.Collections.Generic/DictionaryTKey,TValue/System.Collections.IDictionary.Item/source.cs

@@ -22,12 +22,12 @@ public static void Main()
 
         // The Item property is another name for the indexer, so you
         // can omit its name when accessing elements.
-        Console.WriteLine($"For key = \"rtf\", value = {openWith["rtf"]}.");
+        Console.WriteLine($"""For key = "rtf", value = {openWith["rtf"]}.""");
 
         // The indexer can be used to change the value associated
         // with a key.
         openWith["rtf"] = "winword.exe";
-        Console.WriteLine($"For key = \"rtf\", value = {openWith["rtf"]}.");
+        Console.WriteLine($"""For key = "rtf", value = {openWith["rtf"]}.""");
 
         // If a key does not exist, setting the indexer for that key
         // adds a new key/value pair.
@@ -54,6 +54,6 @@ public static void Main()
         // Unlike the default Item property on the Dictionary class
         // itself, IDictionary.Item does not throw an exception
         // if the requested key is not in the dictionary.
-        Console.WriteLine($"For key = \"tif\", value = {openWith["tif"]}.");
+        Console.WriteLine($"""For key = "tif", value = {openWith["tif"]}.""");
     }
 }

snippets/csharp/System.Collections.Generic/DictionaryTKey,TValue/System.Collections.IDictionary.Remove/source.cs

@@ -22,12 +22,12 @@ public static void Main()
 
         // Use the Remove method to remove a key/value pair. No
         // exception is thrown if the wrong data type is supplied.
-        Console.WriteLine("\nRemove(\"dib\")");
+        Console.WriteLine($"""{"\n"}Remove("dib")""");
         openWith.Remove("dib");
 
         if (!openWith.Contains("dib"))
         {
-            Console.WriteLine("Key \"dib\" is not found.");
+            Console.WriteLine("""Key "dib" is not found.""");
         }
     }
 }

snippets/fsharp/System.Collections.Generic/DictionaryTKey,TValue/System.Collections.IDictionary.Contains/fs.fsproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net10.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>

snippets/fsharp/System.Collections.Generic/DictionaryTKey,TValue/System.Collections.IDictionary.GetEnumerator/fs.fsproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net10.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>

snippets/fsharp/System.Collections.Generic/DictionaryTKey,TValue/System.Collections.IDictionary.Item/fs.fsproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net10.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>

snippets/fsharp/System.Collections.Generic/DictionaryTKey,TValue/System.Collections.IDictionary.Keys/fs.fsproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net10.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>

snippets/fsharp/System.Collections.Generic/DictionaryTKey,TValue/System.Collections.IDictionary.Remove/fs.fsproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net10.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>

snippets/fsharp/System.Collections.Generic/DictionaryTKey,TValue/System.Collections.IDictionary.Values/fs.fsproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net10.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>